NCR RealScan 7892 Bi-Modal Presentation Scanner

NCR RealScan 7892 

Bi-Modal Presentation Scanner 

User Guide 

18266 

B005-0000-1182 

Issue F

The product described in this book is a licensed product of NCR Corporation. 

NCR is a registered trademark of NCR Corporation. 

NCR RealScan is a trademark of the NCR Corporation. 

It is the policy of NCR Corporation (NCR) to improve products as new technology, components, software, 

and firmware become available. NCR, therefore, reserves the right to change specifications without prior 

notice. 

All features, functions, and operations described herein may not be marketed by NCR in all parts of the 

world. In some instances, photographs are of equipment prototypes. Therefore, before using this document, 

consult with your NCR representative or NCR office for information that is applicable and current. 

To maintain the quality of our publications, we need your comments on the accuracy, clarity, organization, 

and value of this book. 

Address correspondence to: 

Manager, Information Products 

NCR Corporation 

2651 Satellite Blvd. 

Duluth, GA 30096 

Copyright © 2001, 2002, 2003 

By NCR Corporation 

Dayton, Ohio U.S.A. 

All Rights Reserved

i 

Preface 

Safety Warnings 

This book is for the various people who unpack, install, program, 

operate, and troubleshoot the NCR RealScan 7892 Bi-Modal 

Presentation Scanner. It contains step-by-step instructions for each of 

these functions. Since the daily operation of the scanner is very simple, 

frequent references to this book are not required while using the 

scanner. However, this book is essential each time you perform the less 

frequently used functions such as installing and programming. 

Notice: This document is NCR proprietary information and is not to 

be disclosed or reproduced without consent. 

Safety Extra Low Voltage 

This device should only be powered by a Safety Extra Low Voltage 

(SELV) power supply source with an available current level of 5 

amperes or less, suitable for the country of installation. The power 

source must be certified by the appropriate safety agency for the 

country of installation. 

Le matériel doit être reliés electriquement au circuit å Très Basse 

Tension de Sécurité (TBTS) ayant une limite de 5 ampères 

correspondant de facon satisfaisante et acceptable dans le pays où le 

matériel doit être installé. Le source d’alimentation doit être approuvée 

par une agence de normalisation appropriée et acceptable dans le pays 

où le matériel doit être installé.

ii 

References 

• NCR RealScan 7892 Bi-Modal Presentation Scanner Installation/Owner 

Guide 

(497-0003071) 

• NCR Scanner/Scale Interface Programmer’s Guide 

(BD20-1074-A) 

• NCR RealScan 7892 Bi-Modal Presentation Scanner Parts Identification 

Manual 

(B005-0000-1184) 

• NCR Scanner Programming Tags 

(BST0-2121-74) 

• International Technical Specification – Symbology Identifiers 

(AIM International ITS, 02-2002 

http://www.aimglobal.org/aimstore/ordfrm.doc)

iii 

Table of Contents 

Chapter 1: Introduction 

Using Your Scanner ............................................... 1-2 

Laser Scanning........................................................ 1-3 

Chapter 2: Understanding the RealScan 7892 

Physical Considerations......................................... 2-1 

Environmental Considerations ............................. 2-2 

Power Considerations............................................ 2-3 

Chapter 3: Installation 

Preparing for Installation............................................. 3-1 

Unpack the Unit ..................................................... 3-1 

Inspect the Unit for Damage ................................. 3-1 

Verify you the have Correct Cables ...................... 3-2 

RealScan 7892-0100 Standard Interface 

Cables.................................................................. 3-2 

RealScan 7892-0100 USB Cables........................ 3-3 

RealScan 7892-0200 Interface Cable.................. 3-3 

Determine Scanner Location ................................. 3-4 

Helpful Information ..................................................... 3-5 

Identifying Available Kits...................................... 3-5 

Determining the Communication Protocol.......... 3-6 

Default Setting........................................................ 3-7 

Installing the RealScan 7892-0100/0300...................... 3-8 

Standard Interface Connection.............................. 3-8 

USB Interface Connection...................................... 3-9 

Installing the RealScan 7892-0200 (Wedge) .............. 3-11 

Connecting Power ...................................................... 3-13

iv 

Modifying the Scanner Program ............................... 3-14 

Chapter 4: Operating Your Scanner 

Scanner Components.................................................... 4-1 

Presentation Scanning.................................................. 4-2 

Pick-Up Scanning ......................................................... 4-4 

Label Orientation.......................................................... 4-5 

Scan Pattern Location............................................. 4-5 

PACESETTER......................................................... 4-5 

Single Line Scanning.............................................. 4-6 

Single Line Scanning Programmable Options ..... 4-7 

Single Action Switch Setting ............................. 4-7 

70% Line Width Option..................................... 4-7 

Label Rotation......................................................... 4-8 

Distance from Scanner ........................................... 4-9 

Read Indicators........................................................... 4-10 

Status Indicator..................................................... 4-10 

Audible Indicator ................................................. 4-10 

Indicator Functions .............................................. 4-11 

Bar Code Quality ........................................................ 4-12 

Reduced Space Symbology........................................ 4-13 

RSS-14.................................................................... 4-13 

RSS-14 Stacked...................................................... 4-13 

RSS Expanded....................................................... 4-14 

RSS Expanded Stacked ........................................ 4-14 

Taking Care of Your Scanner..................................... 4-15 

Scanner Operation Summary .................................... 4-16 

Scan the Bar Code Label ...................................... 4-16 

Presentation Scanning...................................... 4-16 

Pick-up Scanning.............................................. 4-16 

Single Line Scanning........................................ 4-16

v 

Observe the Read Indication ............................... 4-17 

Good Read Indication...................................... 4-17 

No Read Indication.......................................... 4-17 

Chapter 5: Programming 

On-Site Offering ..................................................... 5-1 

Depot Offering........................................................ 5-2 

Preparing for Your Program ................................. 5-2 

Completing the Worksheets .................................. 5-3 

Entering Your Program.......................................... 5-4 

Requirements.......................................................... 5-4 

Help......................................................................... 5-4 

Suggestion............................................................... 5-4 

Programming Considerations ..................................... 5-5 

Programming Tags................................................. 5-5 

Programming Mode............................................... 5-7 

Entering Your Program................................................ 5-8 

Default Settings............................................................. 5-9 

Communications Protocol (7892-0100 only)............. 5-10 

Good Read Tone......................................................... 5-11 

Tone On/Off......................................................... 5-11 

Tone Length.......................................................... 5-11 

Tone Volume ........................................................ 5-11 

Parameter Shortcuts............................................. 5-12 

Timers.......................................................................... 5-13 

Lockout Time........................................................ 5-13 

Restart Lockout Timer ......................................... 5-13 

Active Time........................................................... 5-14 


Bar Codes - 1 ............................................................... 5-15 

UPC/EAN............................................................. 5-15

vi 

Extend UPC-A to EAN-13 ............................... 5-15 

Periodical Codes............................................... 5-16 

Periodical Code Extension............................... 5-16 

Send Data.......................................................... 5-16 


Bar Codes - 2 ............................................................... 5-18 

Code 39.................................................................. 5-18 

Minimum Characters Allowed ....................... 5-18 

Full ASCII ......................................................... 5-18 

Check Digit Present.......................................... 5-19 

Transmit Check Digit....................................... 5-19 

Allow Single Character Tags........................... 5-19 


Bar Codes - 3 ............................................................... 5-20 

Interleaved 2 of 5.................................................. 5-20 

Bar Code Length............................................... 5-20 

Value 1 and Value 2 ......................................... 5-21 

Check Digit Present.......................................... 5-21 

Transmit Check Digit....................................... 5-21 


Bar Codes - 4 ............................................................... 5-22 

Code 128................................................................ 5-22 

Minimum Data Characters Allowed................... 5-22 

UCC 128 ................................................................ 5-22 


Bar Codes - 5 ............................................................... 5-24 

Enable RSS ............................................................ 5-24 

Scans Required on RSS 14.................................... 5-24 

Scans Required on RSS 14 E ................................ 5-24 

USS-128 Emulation Mode.................................... 5-25 

Parameter Shortcuts............................................. 5-25

vii 

Label Identifiers.......................................................... 5-26 

Identifier Type...................................................... 5-26 

Default Prefix and Default Suffix.................... 5-27 

None.................................................................. 5-27 

Unique Prefix and Unique Suffix.................... 5-27 

AIM Identifiers................................................. 5-29 

Common Byte 1 and Common Byte 2................. 5-30 

Bar Code Type...................................................... 5-30 

Common Byte....................................................... 5-31 

Unique Identifier.................................................. 5-31 


Additional Bar Code Options.................................... 5-33 

UPC Number System Character ......................... 5-33 

ISBN Format ......................................................... 5-33 

RS-232 Parameters - 1................................................. 5-34 

Baud Rate.............................................................. 5-34 

Parity ..................................................................... 5-34 

Stop Bits And Character Length ......................... 5-34 

Handshake............................................................ 5-35 


RS-232 Parameters - 2................................................. 5-36 

BCC Option........................................................... 5-36 

Interface Control................................................... 5-36 

Check Digit ........................................................... 5-37 

Retransmit On ACK Timer Expiration ............... 5-37 


RS-232 Prefix Byte....................................................... 5-38 

Prefix Byte............................................................. 5-38 

ASCII Code........................................................... 5-38 


RS-232 Terminator Byte ............................................. 5-39

viii 

Terminator Byte.................................................... 5-39 

ASCII Code........................................................... 5-39 

Second Terminator Byte....................................... 5-39 


Communications Options.......................................... 5-41 

Send IBM Tags in Hex or ASCII.......................... 5-41 

Maintain or Drop OCIA Message Data/Retries 

on IBM................................................................... 5-41 

RS-232 Mode: Normal or Eavesdrop .................. 5-42 

RS-232 Delay......................................................... 5-42 

OCIA NCR Short Soft Reset ................................ 5-43 

Single Line Scanning (option).................................... 5-44 

Switch Activation ................................................. 5-44 

Line Width............................................................ 5-44 

Parameter Version Number....................................... 5-45 

Wedge Options........................................................... 5-46 

Country Code ....................................................... 5-46 

Caps Lock.............................................................. 5-46 

Number Lock and Keypad.................................. 5-46 

Intercharacter Delay............................................. 5-47 


Scanner Programming Summary.............................. 5-48 

Creating the Program........................................... 5-48 

Entering the Program........................................... 5-48 

Saving the Program.............................................. 5-49 

USB Programming...................................................... 5-50 

RS-232 Communications...................................... 5-50 

IBM Communications.......................................... 5-51 

Chapter 6: Troubleshooting 

Repairing Your RealScan 7892..................................... 6-4 

Fuse (old cable only)..................................................... 6-5

ix 

Chapter 7: Program Defaults/Worksheets 

Identifying Program Defaults ............................... 7-1 

Using the Programming Worksheets.................... 7-3 

Programming Worksheets..................................... 7-4 

ASCII Code Chart ............................................ 7-22 

Index

x 

Revision Record 

Issue Date 

Remarks 

A November 2000 First issue 

B June 2001 Corrections: Page 2, LED Indicator colors. 

Worksheet 30 and 10. 

C October 2001 Wedge Option added 

D November 2001 Added USB Connection 

E September 2002 Added AIM Label Identifier 

F April 2003 Added Reduced Space Symbology (RSS) 

support

xi 

Radio Frequency Interference Statements 

Federal Communications Commission (FCC) 

Information to User 

This equipment has been tested and found to comply with the limits for a Class A 

digital device, pursuant to Part 15 of FCC Rules. These limits are designed to provide 

reasonable protection against harmful interference when the equipment is operated in 

a commercial environment. This equipment generates, uses, and can radiate radio 

frequency energy and, if not installed and used in accordance with the instruction 

manual, may cause harmful interference to radio communications. Operation of this 

equipment in a residential area is likely to cause interference in which case the user 

will be required to correct the interference at his own expense. 

NCR is not responsible for any radio or television interference caused by unauthorized 

modification of this equipment or the substitution or attachment of connecting cables 

and equipment other than those specified by NCR. The correction of interference 

caused by such unauthorized modification, substitution or attachment will be the 

responsibility of the user. The user is cautioned that changes or modifications not 

expressly approved by NCR may void the user’s authority to operate the equipment. 

Canadian Department of Communications 

This digital apparatus does not exceed the Class A limits for radio noise emissions 

from digital apparatus set out in the Radio Interference Regulations of the Canadian 

Department of Communications. 

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les 

limites applicables aux appareils numériques de la classe A prescrites dans le 

Règlement sur le brouillage radioélectriques édicté par le ministrère des 

Communications du Canada. 

Voluntary Control Council For Interference (VCCI)

xii 

International Radio Frequency Interference Statement 

Warning: This is a Class A product. In a domestic environment this 

product may cause radio interference, in which case the user may be 

required to take adequate measures.

xiii 

Laser Safety 

Laser Safety Label 

The NCR RealScan 7892 Bi-Modal Presentation Scanner comes from the 

factory with the Laser Safety label attached. The following figure 

shows the Laser Safety label and its location. 

Made in Ireland 

Made in Ireland 

17780 

IEC Class 1 Laser Identification 

The NCR RealScan 7892 Bi-Modal Presentation Scanner comes from the 

factory with the Laser Safety Warning and the Class Identification 

molded in the case. 

Class II a Laser 

Product. Avoid 

Long-Term Viewing 

of direct Laser Light 

Clase II a Producto 

Laser. Trate de no ver 

directamente el Rayo 

Laser por mucho tiempo 

Apparell a laser de 

classe II a. eviter toute 

exposition prolongee 

de la vue a la lumiere 

laser directe. 

IEC CLASS 1 

LASER PRODUCT 

Class II a Laser 

Product. Avoid 

Long-Term Viewing 

of direct Laser Light 

Clase II a Producto 

Laser. Trate de no ver 

directamente el Rayo 

Laser por mucho tiempo 

Apparell a laser de 

classe II a. eviter toute 

exposition prolongee 

de la vue a la lumiere 

laser directe. 

IEC CLASS 1 

LASER PRODUCT 

17781 

The NCR RealScan 7892 Bi-Modal Presentation Scanner is a Class 1 

Laser Product.

xiv 

Laser Power 

The NCR RealScan 7892 Bi-Modal Presentation Scanner meets the 

following laser/LED power requirements. 

• Class IIa CDRH (Center for Devices and Radiological Health) 

• “Class IIa Laser Product—Avoid Long-Term Viewing of Direct 

Laser Light.” 

• Class 1 EN60-825 (Europäische Norm) 

Following is the radiant energy of the laser/LED light as applied to 

each of the specified requirements. 

Caution: The NCR RealScan 7892 Bi-Modal Presentation Scanner is 

not intended for long-term viewing of the direct laser light. However, 

the unit is safe if used as intended. 

Accessible Emission Limit (CDRH Calculation) 

Accessible Emission Limit EN60 825-1:1994+AII:1996 

0.66 Milliwatts 

0.63 Milliwatts 

Caution: Use of controls or adjustments or performance of procedures 

other than specified herein may result in hazardous radiation 

exposure.

xv 

Declaration of Conformity 

We, NCR Corporation, Retail Solutions Division Atlanta, 2651 Satellite 

Boulevard, Duluth, Georgia, 30096-5810, USA, declare under our sole 

responsibility that the product Class RealScan 7892 Bar Code Bi-Modal 

Presentation Scanner to which this declaration relates is in conformity 

with the following standard or other normative document(s) following 

the provisions of the noted Directives. 

EU Directive 

Harmonized Standard(s) 

89/336/EEC (EMC) EN 55022: 1994 + A1 (1995) + A2 (1997) 

EN 50082-1, Part 1 (1992) 

IEC 801-2: 1984, Severity Level 3 

IEC 801-3: 1984, Severity Level 2 

IEC 801-4: 1988. Severity Level 2 

72/23/EEC (Low Voltage) EN 60950: 1992 A1, A2, A3, A4, and A11 

EN 60825-1 

European Contact 

NCR Corporation 

EU Patent Attorney 

RSG – Atlanta 

NCR Limited 

2651 Satellite Boulevard 206 Marylebone Road 

Duluth, GA 30096-5810 

London NW1 6LY 

U.S.A 

England

Chapter 1: Introduction 

Your new RealScan 7892 Bi-Modal Presentation Scanner represents the 

latest technology in laser scanning. It is a small, compact unit that 

weighs about 9.6 ounces. Being a presentation scanner, it permits you 

to present the bar code label to the scanner. This eliminates the need to 

move the label past the scan window, reducing the amount of operator 

activity. The RealScan 7892 also has good pass-by-scanning capability, 

for those to whom pass-by motion seems more natural. 

The RealScan 7892 is available in two models: 7892-0100 and 7892-0200. 

The 7892-0100 offers IBM, RS-232, and OCIA communication, and 

permits you to change among these three programming types. It can be 

connected to the host terminal through a standard interface connection 

or through a USB connection. 

Power for the RealScan 7892 is provided through a wall adapter Power 

Module or directly from the host terminal. In either case, the input 

voltage to the NCR 7892 must be +12Vdc. 

The RealScan 7892-0200 offers PC Keyboard Wedge communication 

only. This model is designed to address the needs of retailers whose 

point-of-sale application does not accept scan data through a 

communication port.

1-2 Chapter 1: Introduction 

Using Your Scanner 

Because your RealScan 7892 is a hands-free presentation type scanner, 

it is much easier to use in the retail environment. The scanner sits on 

the counter and you present the bar code label to the scanner. 

Although the RealScan 7892 is a presentation scanner, there may be 

times when the merchandise is too large to be presented to the scanner. 

In these cases, you can pick up the scanner and move it to the 

merchandise. Because the scanner is very light, you can maneuver it 

easily in these circumstances. 

Single Line Scanning is an optional feature of the RealScan 7892- 

0100/0200. This feature permits you to scan a specific bar code in a 

group of bar codes. 

The design of your scanner permits it to sit on a counter top. Your 

RealScan 7892 does not have an On/Off switch. To minimize the 

amount of time the laser is on, the laser is pulsed during idle. If you 

present a label to the scanner when it is idle, it detects the label and 

turns on. This occurs with minimal delay in reading the label. After 

several minutes of not detecting a valid bar code, the laser 

(programmable 5-30 minutes) shuts off.

Chapter 1: Introduction 1-3 

Laser Scanning 

Although the RealScan 7892 is very simple to use, it is quite a complex 

electronic device. It contains a laser module that generates a low-level 

laser light. The laser light passes through a series of mirrors to generate 

a scan pattern. Reflected light from the bar code is collected and 

decoded to determine the bar code data. The scanner then sends the 

information to the host terminal or personal computer (PC). 

The RealScan 7892 produces an omnidirectional scan pattern that 

makes scanning easier. The pattern looks like several lines are scanning 

simultaneously, but is actually just a single beam reflected through 

several mirrors. It is this pattern that enables the scanner to read bar 

codes from most orientations. 

After reading the information contained in the bar code, the RealScan 

7892 sends the information to the host terminal or PC. Interfaces 

available with the RealScan 7892-0100 for transmitting information are 

OCIA NCR Short, OCIA NCR Long, OCIA Non-NCR, RS-232, IBM 

468x/469x, IBM-USB or NCR/RS-232 USB using a USB Dongle. The 

RealScan 7892-0200 supports Keyboard Wedge, although using 

different cables. The RealScan 7892 contains all the necessary 

electronics and firmware for each of these interfaces. When installing 

the scanner, you can change the interface selection, if needed. Refer to 

Chapter 5, Programming and Chapter 6, Troubleshooting.

Chapter 2: Understanding the RealScan 7892 

Your RealScan 7892 is designed to operate within a wide 

environmental range. Being a small peripheral unit, it does not require 

any special wiring or mounting. Normally, its requirements are within 

those of the host terminal or PC. 

Physical Considerations 

The RealScan 7892 is a small, lightweight unit. Weighing 9.6 ounces, it 

is remarkably easy to pick up when necessary. The RealScan 7892 

requires minimal counter space as shown below: 

140 mm 

(5.5 in.) 

140 mm 

(5.5 in.) 

89 mm 

(3.5 in.) 

89 mm 

(3.5 in.) 

17598

2-2 Chapter 2: Understanding the RealScan 7892 

Environmental Considerations 

Your RealScan 7892 operates in all standard-working environments. 

Temperature and humidity ranges permitted are greater when the 

RealScan 7892 is in storage or transit. The following table gives the 

various environmental requirements. 

Working Range 

Storage Range 

Temperature 50°F to 104°F 

10°C to 40°C 

-40°F to 140°F 

-40°C to 60°C 

Temperature Change 18°F per hour 

10°C per hour 

36°F per hour 

20°C per hour 

Humidity 

20% to 80% RH Non-5% to 95% RH Non- 

Condensing Condensing 

Humidity Change 10% per hour 

Barometric Pressure 105 x 10 3 Pa 

to 69 x 10 3 Pa 

Ambient Light 300 Foot-candles on Not Applicable 

tag, scanner not 

pointed at light 

source 

Acoustical Noise 50 dBa or less Not Applicable 

measured at 12 in. 

(30.48 cm) from any 

surface 

Vibration and Shock Can withstand multiple 6 ft. (183 cm) drops onto 

a tiled concrete floor

Chapter 2: Understanding the RealScan 7892 2-3 

Power Considerations 

Your RealScan 7892 operates on only 9 Vdc. It receives current through 

the Scanner Module Cable from a power module that plugs into an 

electrical outlet. One of five power modules comes with your scanner, 

depending on the requirements you specify. It is critical that you have 

the proper power module for your electrical circuit. The following 

power modules are available: 

• 104 Vac to 127 Vac, 60 Hz, USA/Canada 

• 220 Vac to 240 Vac, 50 Hz, European 

• 220 Vac to 240 Vac, 50 Hz, Australia 

• 90 Vac to 104 Vac, 50/60 Hz, Japan 

• 220 Vac to 240 Vac, 50 Hz, United Kingdom

Chapter 3: Installation 

Preparing for Installation 

Unpack the Unit 

There are several things you should do when preparing to install a 

RealScan 7892. Each of these is discussed in the following sections. 

Unpack the unit according to the instructions printed on the box. After 

everything is out of the box, take inventory to ensure that you have 

received all components. The following list identifies the package 

contents. 

• RealScan 7892 scanner 

• Power Module (if ordered) 

• Scanner Module Cable 

• Interface Cable (if ordered) 

• Documentation 

Inspect the Unit for Damage 

Inspect the unit for physical damage: broken or scratched scan 

window, broken or scratched cabinet, and so forth. If your scanner has 

been damaged due to shipping, notify the shipping carrier and your 

NCR representative. If you find other damage, notify NCR or the other 

supplier if not purchased directly from NCR.

3-2 Chapter 3: Installation 

Verify you the have Correct Cables 

Identify the communication protocol required by the host terminal and 

compare this with the cables shipped with the scanner. The RealScan 

7892 comes from the factory programmed for RS-232 unless specified 

otherwise when ordered. 

RealScan 7892-0100 Standard Interface Cables 

The following table identifies the most common interface cables 

required for the different host connections that can be made with the 

RealScan 7892-0100. See your NCR representative for additional 

RealScan 7892-0100 cables. 

Interface Cable 

Host Connection 

Interface Corporate ID No. 

DynaKey Wedge RS-232 1416-C686-0030 

9-Pin I/F Cable RS-232 1416-C546-0030 

IBM 468 x – 9B RS-485 1416-C547-0030 

9 Pin Power/Interface Combo RS-232 1416-C643-0030 

Note: You can also interface your RealScan 7892 to other host terminals 

not shown in the previous list. You normally do this by using RS-232 

communications through a keyboard wedge. Your application may also 

require a software wedge.

Chapter 3: Installation 3-3 

RealScan 7892-0100 USB Cables 

The following table identifies the USB cables required for connecting 

the RealScan 7892-0100 to a USB port on the host terminal. Note that a 

Scanner Cable is required to connect the scanner to the USB Adapter 

Cable. 

Cable Type Corporate ID No. 

Dongle USB Adapter Powered, Latching 1416-C731-0004 

Cable 

Dongle USB Adapter 

Cable 

Unpowered, Nonlatching 

1416-C732-0004 

When using 1416-C731-0004, the RealScan 7892 receives power from 

the host terminal. Do not connect a Power Module to the Interface Box 

on the end of the Dongle Adapter Cable. 

RealScan 7892-0200 Interface Cable 

The following table identifies the most common interface cable 

required for the RealScan 7892-0200 (Wedge) scanner. See your NCR 

representative for additional RealScan 7892-0200 cables. 


Host Connection 

Interface Corporate ID No. 

PC/AT Keyboard Wedge Wedge 1416-C636-0030


Determine Scanner Location 

When identifying a location for your RealScan 7892 scanner, consider 

the length of the connecting cables. The electrical outlet used for the 

Power Module can be approximately 74 in. (188 cm) from the host 

terminal. Depending on the Scanner Module Cable, the scanner can be 

approximately 9 ft. (274 cm) from the host terminal or PC. These 

distances are normally shorter depending on how you route the 

connecting cables. Be sure that the Scanner Module Cable is long 

enough to permit the scanner to be picked up when required for large 

packages. 

Like any electronic device, your RealScan 7892 should not be located in 

direct sunlight. Temperatures above 104 degrees Fahrenheit (40 

degrees Celsius) can occur when sunlight falls on objects through 

windows or on an outdoor checkstand.


Helpful Information 

Because the RealScan 7892 is so versatile, additional information is 

provided to help have a successful installation. Although this 

information is not needed for most installations, it is needed in certain 

instances. 

Identifying Available Kits 

A Power Module for the electrical requirements you specified comes 

with the RealScan 7892. However, replacement Power Modules are 

available. 

The following table identifies the kit number for all available kits. 

Kit Description 

Kit Number 

Power Module, 104-127 Vac, 60 Hz, North American 7892-K011-V002 

& Japanese 

Power Module, 104-127 Vac, 60 Hz, North American 7892-K012-V001 

Power Module, 220-240 Vac, 50 Hz, European 

Power Module, 220-240 Vac, 50 Hz, Australia 

Power Module, 240 Vac, 50 Hz, United Kingdom 

Auxiliary Power Cable 

(7450 Only Model 0XXX, 1XXX)) 


(7450 Only Model 24xx) 


(7452 only) 

Kit- Auxiliary Power, IBM 468-9B (Remote Power) 

7892-K014-V001 






7892-K054-V001


Determining the Communication Protocol 

Before connecting your RealScan 7892 to a host terminal or PC, you 

must verify the communication protocol being used. The RealScan 7892 

comes from the factory pre-programmed per order requirements. An 

optional sheet is included with the unit that explains how the unit is 

programmed when it is shipped. However, the communications 

protocol is easily changed. Refer to Chapter 5, Programming and 

Chapter 6, Troubleshooting. Also, be sure that the application program 

running on your host terminal or PC can communicate with the 

RealScan 7892. Use the following procedure if you need to determine 

the communications protocol programmed in your RealScan 7892. 

1. Apply power to the RealScan 7892. 

2. Scan the Diagnostics tag. (Must be the first tag scanned after 

applying power.) 

3. Scan the Hex 3 tag. The good read tone for this tag sounds (three 

beeps). 

The Status Indicator flashes green and the tone beeps, identifying the 

communications protocol. The following table identifies the number of 

beeps that sound for each communication protocol. 

Tone 

Communication Protocol 

1 short, OCIA NCR Short 

1 Beep OCIA NCR Long 

2 Beeps OCIA Non-NCR 

3 Beeps IBM 468x - Addr 4A 

4 Beeps IBM 468x - Addr 4B (1520 Bar Code Reader) 

5 Beeps RS-232 

6 Beeps IBM 468x - Addr 4B (Hand Held Bar Code Reader) 

7 Beeps Wedge 

4. Remove power from the RealScan 7892.


Default Setting 

Your scanner is shipped in one of eight default modes depending on 

the cable interface included with the unit. To determine the interface 

you have and set the default: 

• Scan the Default tag. 

• The scanner gives one long beep and then beeps the same number 

of times as the protocol options explained above. 

Note: Seven of the default and protocol modes are applicable to the 

RealScan 7892-0100. Only one mode, Wedge, is applicable to the 

RealScan 7892-0200.


Installing the RealScan 7892-0100/0300 

The RealScan 7892 can be connected to the host terminal through a 

standard interface connection or through a USB connection. Power for 

the RealScan 7892 is provided through a wall adapter Power Module 

or directly from the host terminal 

Standard Interface Connection 

In most configurations the Scanner Cable connects the RealScan 7892 to 

your host terminal. Refer to the terminal documentation for 

information about connecting this cable. Some terminals require a 

trained technician to perform this function. If a Power Module is 

required, it connects to a connector on the Scanner Cable. 

Some less common configurations require two cables: a Scanner Cable 

and an Interface Cable. If a Power Module is required for this 

configuration, it connects to the box on the end of the Scanner Cable. 

Host Terminal 

Scanner 

Cable 

Host Terminal 

Interface 

Cable 

7892 

Power 

Module 

7892 Power 

Module 

Scanner Cable 

Most Common Configuration 

Uses 7892 Scanner Cable 


Less Common Configuration 

Uses 7890 Scanner Cable 

Uses 7890 Interface Cable 

20582 

Note: The Power Module is not used if the RealScan 7892 receives 

power from the host terminal.


USB Interface Connection 

Connecting a RealScan 7892 to a USB port on a host terminal requires 

two special cables. One end of the Dongle Adapter Cable connects to 

the host terminal. The other end has an Interface Box that contains a 

printed circuit board with all the necessary circuitry. A Scanner Cable 

connects the RealScan 7892 to this box. 

Note: The Power Module is not used. The RealScan 7892 receives 

power from the host terminal. 

Host Terminal NCR 7892 

Interface Box 


Dongle Adapter Cable 

20581 

J3 in the Interface Box on the end of the Dongle Adapter Cable contains 

a shunt that must be correctly installed for the host terminal. The cable 

is shipped from the factory with the shunt on pins 3 and 4. The 

following positions are available. 

• Pins 1 & 2 – Not used 

• Pins 3 & 4 – IBM 

• Pins 5 & 6 – NCR/RS-232 

• Pins 7 & 8 – Not used


The cover on the Interface Box latches together along one side. 

Carefully pry open the latched edge to open the Interface Box. Check 

the shunt position on J3 and change as needed. Close the Interface Box 

cover. 

J3 

W I R H 

1 

2 

7 

8 

C1 

R4 

R5 

J3 

J2 

U1 

R6 

R7 

U6 

U4 

C6 

C5 

C4 

J5 

U2 

C3 

C2 

U5 

U7 

J1 

R3 

R2 

R1 

Y1 

U3 

C7 

J4 

C8 

19573


Installing the RealScan 7892-0200 (Wedge) 

The RealScan 7982-0200 (Wedge) option permits the RealScan 7892 to 

be connected to the host terminal through a keyboard connector. Scan 

data is input into the keyboard port. When connected in this 

configuration the RealScan 7892 cannot receive commands from the 

host terminal. 

Note: Unlike the RealScan 7892-0100 there is only a single transmit 

message buffer in the RealScan 7892-0200wedge use. The transmission 

of the data is significantly longer than other communication protocols 

and can be quite slow if a long intercharacter delay is required. 

Note: The Keyboard Wedge cable connects both the scanner and the 

keyboard to the host terminal through the keyboard port. This cable 

has two PS/2 connectors. If the Host terminal system has an AT 

keyboard connector, two adapters are required: an AT to PS/2 and a 

PS/2 to AT. These adapters are available locally at most computer 

stores. 

• Belkin F2N017 – AT to PS/2 

• Belkin F2N018 – PS/2 to AT


Keyboard Wedge Cable 

1416-C636-0030(7892-0200) 

Host Terminal 

Keyboard 


Power Cable 

7892 Scanner 

Power 

Module 

19183a


Connecting Power 

1. Verify that you have the correct Power Module for your electrical 

outlet. 

2. Connect the power connector to the Interface Cable. Depending on 

the installation, this may be a connector on the cable or a box on the 

end of the cable. 

3. Plug the Power Module into an electrical outlet. When the RealScan 

7892 receives power, the diagnostics checks various hardware 

components. If the scanner passes the diagnostic tests, it gives a 

"ready" indication (four flashes of the Status Indicator). A green 

flash followed by a red flash is normal and indicates the scanner 

serial number is stored in the scanner’s EPROM. 

Note: If the RealScan 7892 is receiving power from the host terminal, 

do not connect the Power Module. 

Warning: When the host terminal powers the RealScan 7892, do not 

plug the unit in live. This can cause the Power Supply in the 

terminal to shut down and may also blow an internal fuse in the 

terminal. Be sure to turn off the power to the host terminal before 

connecting the RealScan 7892.


Modifying the Scanner Program 

Your RealScan 7892 comes from the factory with all programming 

parameters set to default values. To change any values that do not 

match your system requirements, refer to Chapter 5, Programming and 

Chapter 7, Program Defaults/Worksheets. 

Note: When using USB cables to connect the RealScan 7892 to a host 

terminal, some of the RS-232 parameters must be set in a specific way. 

Refer to the “USB Programming” section in Chapter 5, Programming.

Chapter 4: Operating Your Scanner 

Scanner Components 

Before using your RealScan 7892, you need to be familiar with some of 

its components. The figure below shows the scanner and identifies 

some of the parts and features. 

Status Indicator 

Scanner Module Cable 

Scan Window 

Single Line Button 

Speaker 

18276a

4-2 Chapter 4: Operating Your Scanner 

Presentation Scanning 

Presentation scanning is much different from that used at checkout 

stands, such as in grocery stores. In the checkout stand environment, 

normally large quantities of items must be scanned in a short amount 

time. Therefore, you pass the items over the scanner, moving them 

from one side of the checkstand to another. The scanner reads the label 

while the items are moving by. 

With presentation scanning, you simply present the label to the 

scanner and then remove it. Do not move the label past the scanner, but 

to the scanner. Presentation scanning is particularly useful in a retail 

environment where the number of items associated with each 

transaction is normally small. There are three simple steps to 

presentation scanning. 

1. Move the bar code label to the scanner as shown. 

Scan Window 

17682

Chapter 4: Operating Your Scanner 4-3 

2. Position the bar code label completely within the red Laser Scan 

Pattern as indicated below. Normally the bar code should be three 

to four inches from the scanner. When the label is read the Status 

Indicator turns green, then returns to red. If enabled, a Good Read 

Tone also sounds. 

Status 

Indicator 

Laser Scan 

Pattern 

17684 

3. Move the bar code label away from the scanner as shown. The 

scanner is now ready to read another bar code label. To read 

another bar code, simply perform these three steps again. 

17685


Pick-Up Scanning 

Occasionally you have merchandise that cannot be picked-up and 

presented to the scanner. The package may be too heavy or too 

awkward to hold while trying to position the bar code label. In these 

circumstances you can pick up the scanner and take it to the 

merchandise. The RealScan 7892 is designed so that you can easily pick 

the scanner up and hold it. Being light-weight, you can present the 

scanner to the merchandise with little effort. 

Careful 

17269


Label Orientation 

Scan Pattern Location 

Because your RealScan 7892 produces a dense, omnidirectional scan 

pattern, labels can be read from many different angles. 

In order for the scanner to read a label, the center 90% of one scan line 

must cross the bar code. To successfully read Code 39 and Interleaved 

2 of 5 labels, the scan line must cross the entire label, not missing any of 

the bars or spaces. UPC and Code 128 labels can be read by piecing 

together two reads of slightly more than half of each side of the bar 

code. Therefore, these labels are much easier to read and do not require 

as much accuracy when presenting the label to the scanner. 

Because of the large scan pattern, you do not have to be very precise 

when you position the label. However, the concentration of scan lines 

is greater in the center of the scan pattern. Because of this, fewer rejects 

occur if you try to position the merchandise so that the label is 

presented toward the center of the scan pattern. 

PACESETTER 

Vendors and printers occasionally supply products to the market with 

bar codes overprinted, underprinted or truncated. Some bar codes 

have missing margins. Others may be printed around the corners of the 

packages or on media that wrinkles when picked up. PACESETTER 

technology is a standard feature that helps read previously difficult-toread 

bar code labels.


PACESETTER Plus trailer provides for symbol quality data being 

applied at the end of UPC and EAN bar codes. This capability can be 

either programmed using the programming tags or on command when 

using RS-232 communication program. 

3 1 2 3 On Enable Trailer 

3 1 3 1 Off Disable Trailer 

Note: Commands are presented in NCR Scanner/Scale Interface 

Programmer’s Guide (BD20-1074-A). 

Single Line Scanning 

Some bar code labels are difficult to read in a presentation mode, 

particularly small labels or labels which are in close proximity to other 

labels. To solve this problem, the RealScan 7892-0100/0200 has a 

Single Line Scanning mode option which permits you to scan a specific 

bar code in a group of bar codes. 

There is a two position switch on the side of the RealScan 7892 to use 

for Single Line Scanning. Pick up the scanner, press the single line 

button to the first position and hold it there. This action turns off all 

but the bottom horizontal line, and turns off the decode as well. After 

targeting the desired bar code with the single line, press the button to 

the second position to decode the bar code. Releasing the button back 

to the first position puts the scanner back in the non-decoding, single 

line mode, ready to read another bar code when the button is again 

pressed to the second potion. Releasing the button all the way returns 

the scanner to the omni-directional mode. 

Use the steps below and the illustration that follows to help you with 

Single Line Scanning. 

1. Press the switch to the first position. The Status Indicator LED 

turns from red to amber and a single red line is visible across the 

bar code. 

2. Align the bar code to be scanned with the scanner.


3. Press the button to the second position and the Status Indicator 

turns from amber to green and the unit beeps, indicating a good 

read. 

Single Line Switch 

18281 

Single Line Scanning Programmable Options 

Single Action Switch Setting 

Scanner decodes at the first position and projected line turns off upon a 

good read. 

70% Line Width Option 

Width of line is reduced by 30% to facilitate reading closely spaced bar 

codes.


Label Rotation 

Your RealScan 7892 can read labels that are presented in many 

different positions. You can present labels that are rotated left or right 

30 degrees from center, up or down 30 degrees from center, and 360 

degrees around center. 

30 

30 

30 

30 

360 

17268


Distance from Scanner 

For optimum reading, the distance you must place the label from the 

RealScan 7892 depends on the density and height of the bar code. You 

can relate this to focusing a camera, where you change the focus setting 

based on how far away the object is. 

Depending on the label, reading can range from zero to six inches. 

Therefore, when you use your scanner, move the label toward the 

scanner to a comfortable distance in front of the scan window 

(approximately three to four inches) and hold the item momentarily. 

Normally the "Good Read" indication occurs within one fourth of a 

second. If this does not happen, try moving the label a little closer to 

the scanner.


Read Indicators 

Status Indicator 

Audible Indicator 

Your RealScan 7892 provides two methods of indicating valid reads: 

Status Indicator (visual) and Audible Tone. The Status Indicator is 

always enabled; however, you can disable the audible tone. 

The Status Indicator light is located on the top of the scanner. When the 

RealScan 7892 detects bar code data, the laser turns on and the Status 

Indicator turns red. When an accurate read of a valid bar code occurs, 

the Status Indicator turns red until the bar code is removed; it then 

turns green again. 

When using IBM 468x communications, the Status Indicator flashes red 

(group of nine flashes repeated at 3-second intervals) when the 

RealScan 7892 is offline. This can be caused if the IBM host terminal 

has not established communications with the RealScan 7892, the host 

terminal is not turned on, or the interface cable is not connected. 

You can program a "Good Read" tone that indicates the scanner's 

ability to accurately read bar codes. This permits you to identify good 

reads without having to observe the Status Indicator. No tone is 

generated if the scanner does not detect a valid bar code.


Indicator Functions 

• Three beeps for the Omni unit 

You can enable or disable the Good Read Tone. If the Good Read Tone 

is enabled, you can also specify its volume and duration. Details for 

programming the Good Read Tone are in Chapter 5, Programming. 

Your 7892 scanner comes with the Good Read Tone enabled. 

As you move the bar code label into the scan pattern, the scanner tells 

you if it is able to read the label. The following chart identifies the 

meaning of each read indicator. 

Indication Meaning Action To Take 

Successful Power Up 

Scanner Scanner is ready to use. 

• Status Indicator flashes twice 

successfully 

passed Level 0 

• Four beeps for the single line 

unit 

Diagnostics. 

Good Read 

• Status Indicator goes green, 

then returns to red 

• Good Read tone sounds if 

enabled 

No Indication 

• Status Indicator stays red 

Scanner accurately 

read the bar code 

label. 

Scanner has not 

detected a bar 

code. 

Continue to next item. 

Verify that label appears good. 

Straighten label if folded, ensure 

that bar code is not covered, and 

try to read again. Be sure bar code 

is within the scan pattern and 

close to the scan window. If 

scanner still cannot read label, key 

in merchandise information on 

terminal.


Bar Code Quality 

The ability of your RealScan 7892 to read bar code labels depends 

greatly on the quality of the label. Although the RealScan 7892 can 

often read bar codes that appear to be bad, it cannot read bar codes that 

are obstructed, defective, or damaged. If the scanner cannot read the 

bar code, you must key in the merchandise information at the terminal 

and go on to the next item. Be sure to tell your supervisor if many bar 

code labels are defective. The figure below shows some examples of 

bad bar codes. These are only examples and are not all-inclusive. 

0 01 2 3 4 5 6 7 8 9 6 

0 0 1 2 3 4 5 6 7 8 9 6 

0 01234 56789 

6 

Bar Code Scratched Bar Code Folded Bar Code Truncated 

0 0 1 2 3 4 5 6 7 8 9 6 0 0 1 2 3 4 5 6 7 8 9 6 0 0 1 2 3 4 5 6 7 8 9 6 

Bar Code Torn Poor Color Contrast Red Bar Code On 

Red Background 

R0026 

The readability of a label depends on variables such as sizing, 

placement, color, paper type, ink viscosity, and package coatings. The 

middle of a printing run can yield erroneous labels due to the many 

variants involved. In particular, poor color contrast and marginal print 

quality can make a label hard to read. 

A label should be considered readable if it meets or exceeds the 

requirements set forth in the EAN UCC General Specification 1/2000.


Reduced Space Symbology 

Reduced Space Symbology (RSS) permits more data to be recorded in a 

smaller physical space. This is accomplished by encoding the data in 

large symbol characters rather than encoding each data character 

separately. Also, no quiet zone is required around the symbols. The 

RealScan 7892 with RSS can read four types of RSS bar codes. Refer to 

Chapter 5, Programming for information about enabling RSS. 

RSS-14 

RSS-14 is a linear symbology that encodes 14 UCC/EAN digits. This 

structure provides four segments that can be decoded separately, then 

reconstructed. The total symbol contains 96 modules combined into 46 

elements (bars and spaces). 

0100012345678905 

19254 

RSS-14 Stacked 

RSS-14 Stacked is a 2-row format. The bottom row is higher that the 

top row and the two are separated with a separator pattern. The 

stacked format is used when not enough linear space is available. An 

example use is marking produce in a grocery store. 

0100991234567899 

19255


RSS Expanded 

RSS Expanded is a variable length linear symbology. It can encode 74 

numeric or 41 alpha characters. RSS Expanded can be scanned and 

decoded in up to 22 segments and then reconstructed. 

9987 6543 2101 2345 6789 8888 

19256 

RSS Expanded Stacked 

RSS Expanded Stacked is similar too RSS-14 Stacked except it uses the 

RSS Expanded format for creating the symbol. 

0192 1234 5698 7457 3202 0000 9939 0200 296 

19257


Taking Care of Your Scanner 

Although your RealScan 7892 is rugged, remember to treat it carefully. 

Keeping the Scan Window clean helps keep the read rate exceptionally 

high. Follow these simple instructions to keep your scanner clean and 

well-maintained. 

• Clean the scanner body with a soft cloth dampened by lukewarm 

water and a mild soap. 

• When the Scan Window is dirty, clean it with a cloth dampened 

with lukewarm water. 

Your RealScan 7892 is designed to provide you with long, trouble-free 

service. However, it is up to you to care for your scanner. The 

following list identifies things you should consider in taking care of 

your scanner. 

• Handle the scanner with care. 

• Keep the Scan Window clean. 

• Replace the Scan Window if excessively scratched. 

• Do not pick up the scanner by the cable. 

• Do not submerge the scanner or let it get wet.


Scanner Operation Summary 

Scan the Bar Code Label 

Use this summary after you have read this entire chapter and have 

scanned a few bar code labels. 

Presentation Scanning 

Move the merchandise toward the scanner so the bar code label moves 

toward the center of the Scan window. To minimize scratching, try not 

to contact the Scan Window. 

Pick-up Scanning 

Carefully pick up the scanner and move it toward the merchandise so 

the center of the Scan Window moves toward the bar code label. To 

minimize scratching, try not to contact the merchandise. 

Single Line Scanning 

Single Line Scanning permits you to scan a specific bar code in a group 

of bar codes. The RealScan 7892-0100/0200 has a two-position button 

located on the side of the unit. 

1. Press the button to the first position. The Status Indicator LED 

turns from red to amber and a single red line is visible across the 

bar code. 

2. Align the bar code to be scanned with the scanner. 

3. Press the button to the second position. The Status Indicator turns 

from amber to green and the unit beeps, indicating a good read.


Observe the Read Indication 

The scanner gives either a Good Read indication or no indication. A 

Good Read is indicated by the Status Indicator light going from red to 

green and then back to red. If the Good Read tone is enabled, the 

RealScan 7892 also beeps. 

Good Read Indication 

Put the merchandise on the counter top and go to the next item entry. 

No Read Indication 

Examine the bar code label. If it appears to be good, remove any folds 

or obstructions and try to read it again. Be sure you position the label 

within the scan pattern and close to the scanner. If the bar code still 

does not read, key in the merchandise information on the terminal.

Chapter 5: Programming 

On-Site Offering 

This overview of programming your RealScan 7892 is intended to 

acquaint you with the overall programming procedure. The “Scanner 

Programming Summary” section at the end of this chapter is most 

useful after you have performed the programming function. 

Customers who sign-up for NCR's On-Site Offering should do the 

following: 

• Update your Installation and Owner Guide to include those 

programming parameters you change (if any) by circling those 

areas/sections/parameters you change and then writing in the new 

values you program into your RealScan 7892 unit. Refer to the chart 

in Chapter 7 that identifies the RealScan 7892 factory Default 

values. 

• Keep your Installation Guide where it is accessible to the person(s) 

responsible for interfacing with the NCR Customer Engineer who 

repairs your RealScan 7892 unit(s). 

• Prior to having the NCR Customer Engineer begin the repair of 

your failed RealScan 7892 unit, provide him with a copy of the 

pages that include the changes you have made. 

Note: In those cases where the NCR Customer Engineer does not 

receive documents to the contrary, they assume that no changes 

have been made to the RealScan 7892 Factory Default Values and 

program your repaired/replaced RealScan 7892 unit accordingly. 

If changes have been made and the NCR Customer Engineer has 

not been made aware of these changes, then the repair time is 

greatly increased as the NCR Customer Engineer tries to identify 

the correct programming parameters.

5-2 Chapter 5: Programming 

Depot Offering 

Customers who sign-up for NCR's Depot Offering should do the 

following: 

• Update your Installation and Owner Guide to include those 

programming parameters you change (if any) by circling those 

areas/sections/parameters you change and then writing in the new 

values you program into your RealScan 7892 unit. 

Note: Reference the chart in Chapter 7 which contains the Default 

values that have been programmed into the RealScan 7892 at the 

factory. 

• Keep your Installation and Owner Guide where it is accessible to 

the person(s) responsible for mailing in your RealScan 7892 units 

for repair. 

• Prior to mailing your failed RealScan 7892 unit in for repair, copy 

the pages that include the changes you have made and put a copy 

of these documents inside the box containing your defective 

RealScan 7892 unit. 

Note: In those cases where the NCR Depot does not find documents 

to the contrary, they (NCR Depot) assume no changes have been made 

to the RealScan 7892 Factory Default Values and program your 

repaired/replaced RealScan 7892 unit accordingly. 

Preparing for Your Program 

Determine the requirements for your program, such as 

communications protocol, use of good read tone, timeouts, bar code 

types, label identifiers, RS-232 requirements (if using this protocol) and 

defaults. You may need to read your system application 

documentation.

Chapter 5: Programming 5-3 

Completing the Worksheets 

Programming parameters are contained in the Programming 

Worksheets. Before using the worksheets, read the “Using the 

Programming Worksheets” section at the beginning of Chapter 7. 

You need to know the communication protocol that your host terminal 

is using so that you can program your RealScan 7892 to the same 

protocol. If you are unsure of the setting in your scanner, scan the 

Default tag. The unit should make one long beep followed by the 

number of beeps corresponding to the communication protocol. (See 

Chapter 3 in this manual.) If this is not the desired default, program 

the communication protocol first, and then program any additional 

parameters using the programming tags and worksheets. 

The Programming Worksheets identify the default values that are 

determined at the factory. You only need to use the worksheets that 

need changing for your particular requirements. Enter your program at 

the bottom of each worksheet. Be sure to read the sections later in this 

chapter that relate to the worksheets you are using.


Entering Your Program 

Enter your program by performing three basic steps: 

1. Enter the Base Programming state by scanning the Programming 

Mode tag first after applying power to the RealScan 7892 scanner. 

2. Select a Programming Worksheet and enter its parameter data by 

scanning the Hex tags identified in Your Program at the bottom of 

the Programming Worksheet. Repeat this for each worksheet used 

if the default is changed. 

3. Save your program by scanning the Save and Reset tag. 

Requirements 

Help 

Suggestion 

• Programming Worksheets - Chapter 7 

• Programming Tags - BST0-2121-74 

• Refer to the “Programming Tags Chart” later in this chapter. 

• Refer to the step-by-step procedure described in “Entering Your 

Program” (above). 

• Refer to the “Scanner Programming Summary” at the end of this 

chapter. 

• Refer to “Using the Programming Worksheets” in Chapter 7. 

If you do not know how your scanner is programmed, you can scan the 

Default programming tag to set the scanner to all default values, then 

make the necessary changes. Scanning the Default tag forces the 

defaults selected in Worksheet 30. 

Note: The Default setting is shown on Worksheet 30 in Chapter 7.


Programming Considerations 

Programming Tags 

Your RealScan 7892 is fully programmable to meet your system 

requirements. 

When you receive your RealScan 7892, it is already programmed with 

default values set at the factory. However, if you need to make 

programming changes, the procedure is very simple. First complete a 

series of programming worksheets, then enter the information using 

special Programming Tags (BST0-2121-74). 

There are 5 unique tags and 16 hexadecimal (Hex) character tags. The 

following chart identifies each Programming Tag, its function, and the 

associated indicators. 

Tag Function Indication 

Default This tag causes the RealScan 7892 to One long beep 

use the program defaults. It must be 

Series of beeps indicating 

the first tag scanned after applying 

default communications 

power to the scanner. 

protocol 

Tone – Power up tone 

sequence 

Programming 

Mode 

End 

This tag puts the RealScan 7892 in 

the Base Programming state. It must 

be the first tag scanned after 

applying power to the scanner, or 

after scanning the Default tag. 

Short beep - good read 

In Base Programming state 

Long and short beep 

Status Indicator - off 

This tag ends certain input Short beep - good read 

sequences. Since the programming 

Status Indicator - flash green 

mode can determine the end of most 

once 

input sequences, this tag is not used 

very often.


Tag Function Indication 

Save and Reset This tag causes the RealScan 7892 to 

save, and start using the 

programming data. It is used in the 

Base Programming state. 

Abort 

If this tag is scanned in the Base 

Programming state, programming is 

terminated and no previously 

entered parameters are saved, and 

unit initiates a power-up. 

If this tag is scanned in a specific 

programming mode, all parameters 

entered are maintained in RAM and 

the scanner goes to the Base 

Programming state. 


Status Indicator - flash red 

twice 

Tone – Power up tone 

sequence 


Status Indicator - flash red 

twice 

Tone - Four quick beeps from 

low to high frequency 


Status Indicator - flash green 

once 

Hex 0 – Hex F 

These 16 tags enter the selections for Hex 0; Status Indicator green 

each of the parameters in the specific and short, high frequency 

programming modes. They also beep. 

select the programming mode. 

Hex 1-Hex F; Beeps tag value. 

Multiples of 4 are short beeps 

grouped together. Others are 

longer. Example: Hex D is 3 

sets of 4 short beeps followed 

by 1 longer beep.


Programming Mode 

To program your RealScan 7892, it must be in the Programming Mode. 

Enter this mode by scanning the Programming Mode tag immediately 

after applying power to the scanner; it must be the first tag scanned. 

This puts the scanner in the Base Programming state. When entering 

the Base Programming state, the scanner produces a long then short 

beep; the Status Indicator stays off. 

From the Base Programming state, select specific programming modes 

by scanning the proper two hexadecimal tags. The program parameters 

that you enter in a specific programming mode are identified on the 

associated Programming Worksheet. 

In each specific programming mode, enter all the information 

contained on the worksheet by scanning all the proper tags in sequence 

as shown on the worksheet. In addition, use parameter shortcuts to 

enter a specific parameter. Program entry goes directly to a specific 

parameter when you scan the proper Hex tag. 

If you do not know how your RealScan 7892 is programmed, you can 

set it to all defaults, then enter any required changes to match your 

program. Do this by scanning the Default tag as the first tag after 

applying power to the scanner. This sets the defaults for the 

programmed default setting in the scanner. Next, scan the 

Programming Mode tag to enter the Programming Mode. 

The scanner accepts programming tags only in the Programming 

Mode. If you scan a programming tag during normal operation, 

nothing happens.


Entering Your Program 

Entering your program consists of putting the RealScan 7892 in the 

Base Programming State, entering the parameter data provided on the 

Programming Worksheets, and saving the program. Use the following 

procedure to enter your program. 

1. Apply power to the RealScan 7892. 

2. Scan the Programming Mode tag. 

3. Scan the two Hex tags corresponding to a worksheet number. 

Example: To program the 7892 Timers using Worksheet 12, scan 

Hex 1 followed by Hex 2. 

4. Scan the appropriate Hex tags to enter the parameters. 

Example: Scan Hex 3 for lockout time of 900 milliseconds; Hex 0 for 

do not restart lockout timer; and Hex 2 for active time of 15 

minutes. 

After entering the last parameter, programming returns to the Base 

Programming State.


Default Settings 

The Default Settings Programming mode sets the scanner’s default 

Communications Protocol. This determines the default that is set when 

you scan the Default Programming tag. The default is indicated by a 

long beep followed by a series of short beeps to indicate the setting. 

For IBM settings, the Default Setting sets the default state for the data 

format (ASCII or HEX) as well. For Wedge, the UPC-E check digit is 

also set. 

The first seven options (0-6) are applicable to the RealScan 7892-0100. 

All model RealScan 7892-0200 scanners are configured as Wedge 

(option 7) at the factory. Additional settings for communication 

options are noted within the selection. Refer to the Default Settings 

Worksheet (30) in Chapter 7. 

Note: For the Default Settings Programming mode, you must enter 30 

B, followed by your selection number (0-7).


Communications Protocol (7892-0100 only) 

The Communications Protocol Programming mode selects the protocol 

that the RealScan 7892-0100 uses to communicate with the host 

terminal or PC. Refer to the Communications Protocol Worksheet (10) in 

Chapter 7. 

The Protocol parameter contains seven selections: 

• OCIA NCR Short (0) 

• OCIA NCR Long (1) 

• OCIA Non-NCR (2) 

• IBM 468x Select Address 4A (3) 

• IBM 468x Select Address 4B for 1520BCR (4) 

• RS-232 (5) 

• IBM 468X Select Address 4B for HHBCR (6).


Good Read Tone 

The Good Read Tone Programming mode selects the parameters for 

sounding a tone each time the RealScan 7892 successfully reads a bar 

code. If you choose to enable the Good Read Tone, you can also 

program the tone volume and tone length. Refer to the Good Read Tone 


Tone On/Off 

Tone Length 

Tone Volume 

The Tone On/Off parameter contains two selections: On and Off. The 

Hex 0 tag turns off the Good Read Tone and the Hex 1 tag turns on the 

Good Read Tone. The default is to turn on the Good Read Tone. 

The Tone Length parameter permits you to select the length of the 

Good Read Tone. The parameter contains 10 different lengths ranging 

from 25 milliseconds to 250 milliseconds. Select these times using the 

Hex 0 through Hex 9 tags. The default length is 100 milliseconds for 

the RealScan 7892. 

Most people cannot identify short time lengths such as those available 

for Good Read Tones. To aid in determining your tone length you can 

increment the tone length by scanning the Hex A tag. Each time you 

scan the Hex A tag, the tone length increments 25 milliseconds. After 

reaching 250 milliseconds, the procedures starts over, beginning with 

25 milliseconds. You normally end this mode by scanning the END 

tag. However, you can also end it by scanning another valid Hex tag. 

The tone volume has two settings, Low and High. Scan the Hex 0 tag 

for low volume and the Hex 1 tag for high volume. The default is High 

volume.


Parameter Shortcuts 

The Good Read Tone Programming mode contains three shortcuts: A, 

B, and C. After entering this programming mode you can go directly to 

a specific parameter by scanning the appropriate shortcut Hex tag (Hex 

A, Hex B, or Hex C). This eliminates the need to enter all parameters 

when only one needs changing.


Timers 

The Timers Programming mode controls the two RealScan 7892 timers: 

Lockout Time and Active Time. Refer to the Timers Worksheet (12) in 

Chapter 7. 

Lockout Time 

Lockout Time prevents the scanner from repeatedly reading the same 

bar code. After reading a bar code, it must be removed from the scan 

pattern and the time programmed in Lockout Time must elapse before 

the scanner can read the same bar code again. The Lockout Time 

parameter selects the lockout time. 

There are 8 different times ranging from 450 milliseconds to 1500 

milliseconds. Select these times using the Hex 0 through Hex 7 tags. 

The default time is 450 milliseconds. 

Restart Lockout Timer 

The Restart Lockout Timer parameter controls restarting Lockout Time 

each time the scanner reads the same bar code. Turning on the Restart 

Lockout Timer option has the following effect. After reading a bar 

code, if the barcode moves out of the scan pattern and then back into 

the scan pattern before Lockout Time times out, the Lockout Time 

restarts. The Hex 0 tag turns off this option and the Hex 1 tag turns it 

on. The default is On.


Active Time 

You can program specific lengths of time that your RealScan 7892 stays 

on after the last good read. 

There are six options in the Active Time parameter. Standard values 

range from 5 minutes to 30 minutes in increments of 5 minutes. The 

default time is 5 minutes. 


The Timers Programming mode has three shortcuts: A, B and C. After 

entering this programming mode you can go directly to a specific 

parameter by scanning the appropriate shortcut Hex tag (Hex A, Hex 

B, and Hex C). This eliminates the need to enter all parameters when 

only one needs changing.


Bar Codes - 1 

The Bar Codes - 1 Programming mode contains programming 

parameters for Code 128 and UPC/EAN bar codes. Refer to the Bar 

Codes - 1 Worksheet (13) in Chapter 7. 

UPC/EAN 

The UPC/EAN parameter controls reading UPC/EAN bar codes. 

Disable reading UPC/EAN bar codes by scanning the Hex 0 tag and 

enable reading by scanning the Hex 1 tag. The default is to Enable 

reading. 

If you choose to disable reading UPC/EAN bar codes, there are no 

other entries permitted for this parameter. However, if you enable 

reading UPC/EAN bar codes, you can program the following 

parameters. 

Extend UPC-A to EAN-13 

The Extend UPC-A To EAN-13 parameter option determines whether 

to pad the tag data, changing 12-digit UPC-E tags to 13-Character EAN 

tags. The program does this by putting a 0 at the front of the tag data. 

Scan the Hex 0 tag to disable this option or the Hex 1 tag to enable it. 

The default is Disable. Scanning a valid Hex tag ends the input for this 

parameter option. 

Extend UPC-E to UPC-A 

The Extend UPC-E To UPC-A parameter option determines whether to 

pad the tag data, changing 6-digit, truncated UPC tags to 12-Character 

UPC-A tags. Scan the Hex 0 tag to disable this option or the Hex 1 tag 

to enable it. The default is Disable. Scanning a valid Hex tag ends the 

input for this parameter option.


Periodical Codes 

The Periodical Codes parameter option controls the processing of 

Periodical Codes. You disable Periodical Codes by scanning the Hex 0 

tag and enable them by scanning the Hex 1 tag. The default is to 

Disable Periodical Codes. 

If you choose to disable Periodical Codes, there are no other entries 

allowed for this parameter. Scanning the Hex 0 tag also causes the 

scanner to go back to the Base Programming state. However, if you 

enable Periodical Codes, you must program the following parameters. 

Periodical Code Extension 

The Periodical Code Extension parameter option has three selections: 

2-digit extension only; 5-digit extension only; or either 2- or 5-digit 

extensions. Scan the Hex 0 tag for 2-digit extension only; the Hex 1 tag 

for 5-digit extension only; or the Hex 2 tag for both 2- and 5-digit 

extension. The default is 2- and 5-digit extensions. Scanning a valid 

Hex tag causes the program to go the next parameter option. 

Send Data 

The Send Data parameter option has three selections: Data As 

Decoded; Periodical Code Data Only; and 7F Hex If Periodical Data 

Not Decoded. If you scan a Hex 0 tag, the data is sent as decoded, 

whether or not there are extension digits. If you scan a Hex 1 tag, only 

valid periodical codes are sent. If you scan a Hex 2 tag, a hexadecimal 

7F is sent as the extension if the scanner could not read a 2- or 5-digit 

code. The extension is sent after the main tag data. The default is Data 

As Decoded. Scanning a valid Hex tag causes the program to go the 

Base Programming state.



The Bar Codes - 1 Programming mode contains six shortcuts: A 

through F. After entering this programming mode you can go directly 

to a specific parameter by scanning the appropriate shortcut Hex tag 

(Hex A through Hex F). This eliminates the need to enter all 

parameters when only one needs changing.


Bar Codes - 2 


parameters for Code 39. Refer to the Bar Codes - 2 Worksheet (14) in 

Chapter 7. 

Code 39 

The Code 39 parameter controls reading Code 39 bar codes. Disable 

reading Code 39 bar codes by scanning the Hex 0 tag and enable 

reading by scanning the Hex 1 tag. The default is to Disable reading. 

If you choose to disable reading Code 39 bar codes, there are no other 

entries allowed for this parameter. However, if you enable reading 

Code 39 bar codes, you can program the following parameters. 

Minimum Characters Allowed 

The Minimum Characters Allowed parameter option defines how 

many characters in a bar code must be read the same by two separate 

scans before determining a valid read has occurred. Set this option to 

the number of characters in a typical tag. This ensures that the scanner 

reads typical tags with at least two complete good scans before sending 

the tag data to the host terminal or PC. 

There are fifteen selections for this parameter option. Scan the proper 

Hex tag (Hex 2 through Hex F) to enter your selection. The default is 4 

characters. 

Full ASCII 

Code 39 permits full ASCII capability by encoding the additional 

characters. Disable this function by scanning the Hex 0 tag; scan the 

Hex 1 tag to enable the function. Disable is the default.



Check Digit Present 

The Check Digit Present parameter option permits you to determine if 

the bar code must contain a correct check digit to be identified as valid. 

If enabled, the bar code is ignored if a check digit is not present. If 

disabled, a check digit within a bar code is considered part of the data 

and is transmitted to the host. Scan the Hex 0 tag to disable this option, 

or the Hex 1 tag to enable it. Disable is the default. 

Transmit Check Digit 

The Transmit Check Digit parameter option selects whether to send the 

check digit to the host terminal or PC. Scan the Hex 0 tag to disable this 

option, or the Hex 1 tag to enable it. Disable is the default. 

Allow Single Character Tags 

This is a direct entry programming parameter. When enabled, the 

parameter permits single character Code 39 labels. Disable is the 

default. 

The Bar Codes - 2 Programming mode contains five shortcuts: A 

through E. After entering this programming mode you can go directly 


(Hex A through Hex F). This eliminates the need to enter all 



Bar Codes - 3 

Interleaved 2 of 5 


parameters for Interleaved 2 of 5. Refer to the Bar Codes - 3 Worksheet 

(15) in Chapter 7. 

The Interleaved 2 of 5 parameter controls reading Interleaved 2 of 5 bar 

codes. Disable reading Interleaved 2 of 5 bar codes by scanning the 

Hex 0 tag and enable reading by scanning the Hex 1 tag. The default is 

to Disable reading. 

If you choose to disable reading Interleaved 2 of 5 bar codes, there are 

no other entries permitted for this parameter. However, if you enable 

reading Interleaved 2 of 5 bar codes, you can program the following 

parameters. 

Bar Code Length 

The Bar Code Length parameter option selects the method for 

determining if an Interleaved 2 of 5 bar code is a valid length. The 

Range Check method identifies a length range by specifying the 

minimum and maximum number of characters. The Specific Check 

method identifies two specific bar code lengths by specifying the 

number of characters in each. With this option, the number of 

characters in all Interleaved 2 of 5 bar codes must be one of the two 

numbers. Scan the Hex 0 tag to use the Range Check method, scan the 

Hex 1 tag to use the Specific Check method. The default is the Range 

Check method.



Value 1 and Value 2 

The Value 1 and Value 2 parameter options specify the valid 

Interleaved 2 of 5 bar code lengths. Use this option with the Bar Code 

Length parameter option described in the previous section. If you 

select the Range Check method, Value 1 specifies the minimum 

number of characters in a valid Interleaved 2 of 5 bar code and Value 2 

specifies the maximum number of characters. If you select the Specific 

Check method, Value 1 contains one specific number of characters and 

Value 2 contains another. 

Accepted values for Value 1 and Value 2 are 4 to 38 readable 

characters. The number of readable characters must be an even 

number; if you specify an odd number, it is rounded up one. Each 

value is input using two Hex tags. The first can be Hex 0 through Hex 3 

and the second Hex 0 through Hex 9. The default for Value 1 is 08. The 

default for Value 2 is 16. 


The Check Digit Present parameter determines if the bar code must 

contain a correct check digit to be identified as valid. If enabled, the bar 

code is ignored if a check digit is not present. Scan the Hex 0 tag to 

disable this option, or the Hex 1 tag to enable it. Disable is the default. 


The Transmit Check Digit parameter option selects whether to send the 

check digit to the host terminal or PC. Scan the Hex 0 tag to disable this 

option, or the Hex 1 tag to enable it. The default is to Disable sending 

the check digit. 

The Bar Codes - 3 Programming mode contains 4 shortcuts: A through 

D. After entering this programming mode you can go directly to a 

specific parameter by scanning the appropriate shortcut Hex tag (Hex 

A through Hex D). This eliminates the need to enter all parameters 



Bar Codes - 4 


parameters for Code 128 bar codes. Refer to the Bar Codes - 4 


Code 128 

The Code 128 parameter contains two selections: Disable and Enable. 

Disable reading Code 128 bar codes by scanning the Hex 0 tag and 

enable reading by scanning the Hex 1 tag. The default is to Disable 

reading Code 128 bar codes. 

Minimum Data Characters Allowed 

The Minimum Data Characters Allowed refers to the number of Code 

128 characters for numeric-only Code 128 symbol. For example, given a 

numeric-only Code 128 symbol of "12 34 56 78", the Minimum Data 

Characters Allowed would be 4. Each Code 128 character is composed 

of two numeric data characters and alphanumeric is one for one. Enter 

your selection by scanning the appropriate hex tag (Hex 1 through Hex 

5). The default is three. 

UCC 128 

The UCC 128 option refers to the Uniform Code Council Code 128 Data 

Formatter Start Code. Scan the Hex 0 tag to disable this function, or the 

Hex 1 tag to enable it. The default is Disable. 

Note: When enabling UCC-128 the AIM label identifier “] C1” is sent 

in RS-232 and OCIA long format uniquely identifying a UCC-128 tag.



The Bar Codes - 4 Programming mode contains 3 parameter shortcuts. 

After entering this programming mode you can go directly to a specific 

parameter by scanning the appropriate shortcut Hex tag (Hex A, 

Hex B, or Hex C). This eliminates the need to enter all parameters 



Bar Codes - 5 


parameters for Reduced Space Symbology (RSS) bar codes. Refer to the 

Bar Codes - 5 Worksheet (18) in Chapter 7. 

Enable RSS 

RSS permits more data to be recorded in a smaller space. The RealScan 

7892 can be programmed to read RSS tags. When programming the 

RSS feature, the programming tags must be the first tags scanned after 

applying power to the RealScan 7892. Four selections are available: 

Disable (Hex 0), Enable RSS 14 (Hex 1), Enable RS14E (expanded) only 

(Hex 2), and Enable RSS 14 and RSS 14E (Hex 3). When one of the RSS 

enabled options is used, additional parameters are required as 

described below. The default is to Disable reading RSS bar codes. 

Scans Required on RSS 14 

Scans Required on RSS 14 E 

This parameter sets the number of scans required to read a RSS 14 bar 

code. Increasing the number of scans can improve reading nominal bar 

codes. There are four settings: 1 scan, 2 scans, 3 scans, and 4 scans. The 

default is 1 scan. Set this parameter by scanning the appropriate 

programming tag, Hex 1 through Hex 4. 

This parameter sets the number of scans required to read a RSS 14E bar 

code. Increasing the number of scans can improve reading nominal bar 

codes. There are four settings: 1 scan, 2 scans, 3 scans, and 4 scans. The 

default is 1 scan. Set this parameter by scanning the appropriate 

programming tag, Hex 1 through Hex 4.


USS-128 Emulation Mode 


The UCC-128 Emulation Mode refers to the Uniform Code Council 

Code 128 Data Formatter Start Code. Two choices are available for this 

parameter. Scan the Hex 0 programming tag for Normal Mode or the 

Hex 1 programming tag to enable UCC-128 Emulation. The default is 

Normal Mode. 

The Bar Codes - 5 Programming mode contains 4 parameter shortcuts. 

After entering this programming mode you can go directly to a specific 

parameter by scanning the appropriate shortcut Hex tag (Hex A, 

Hex B, Hex C, or Hex D). This eliminates the need to enter all 

parameters when only one needs changing..


Label Identifiers 

The Label Identifiers Programming mode selects the parameters for 

adding label identifiers to RS-232 and OCIA NCR Long 

communication messages. OCIA NCR Short, OCIA Non NCR, and 

IBM 468x communication messages have a fixed format and do not use 

this programming mode. Refer to the Label Identifiers Worksheet (16) in 

Chapter 7. 

If you do not change the Unique Identifier, the program uses the last 

one programmed. 

Identifier Type 

The Identifier Type parameter defines the type and placement of label 

identifiers. You can select default identifiers that prefix the message 

data, default identifiers that suffix the message data, unique prefix 

identifiers, unique suffix identifiers, or no identifiers. 

Select the Identifier Type by scanning the appropriate Hex 0 through 

Hex 5 tag. If you select default identifiers, you do not need to enter any 

other parameter in this programming mode. The factory set default is 

Default Prefix.


Default Prefix and Default Suffix 

Scan the Hex 0 tag to use the default prefix and the Hex 1 tag to use the 

default suffix. The default label identifiers vary depending on the type 

of bar code read. The following chart gives the default identifiers for 

each bar code type. 

Bar Code Type Default Prefix Identifiers Default Suffix Identifiers 

UPC-A 41H 41H 

UPC-E 45H 45H 

EAN-8 46H 46H 46H 

EAN-13 46H 46H 

Code 39 42H 31H 42H 31H 

Interleaved 2 of 5 42H 32H 

42H 32H 

Code 128 42H 33H 42H 33H 

RSS 14 *5DH 65H 31H 48H 

RSSE *5DH 65H 31H 49H 

* AIM Label Identifier 

None 

Scan the Hex 2 tag for the None selection. No label identifiers are 

added to the message data. 

Unique Prefix and Unique Suffix 

Scan the Hex 3 tag to use a unique prefix or the Hex 4 tag to use a 

unique suffix. A Unique Identifier is associated with each bar code 

type. Also, you may use one, two, or no Common Bytes. The following 

illustration shows the possible message formats when using a Unique 

Prefix or a Unique Suffix. The formats show only the tag data portion 

of the message.


Unique Label Identifiers 

Unique Prefix - All Bar Codes Unique Identifier Bar Code Data 

Common Byte 1 Unique Identifier 


Bar Code Data 

Bar Code Data 

Common Byte 1 Common Byte 2 Unique Identifier 

Bar Code Data 

Unique Suffix - All Bar Codes 

Bar Code Data 

Bar Code Data 

Bar Code Data 

Bar Code Data 

Unique Identifier 



Common Byte 1 Common Byte 2 Unique Identifier 

18031


AIM Identifiers 

Scan the Hex 5 tag to use label identifiers specified by AIM. This 

format has a close bracket (5DH) as the first character. The second 

character is unique for the type of tag. The third byte is a modifier byte 

whose value depends on the tag. AIM uses the Common Byte 1, 5DH, 

so it can not be changed. Below are the unique bytes for each of the 

symbologies. Note that UPC-E and UPC-A are sent as EAN-13 tags. 

AIM Identifiers are supported starting with Firmware release 

497-0424514. 

Note: AIM identifiers for UPC/EAN codes require additional changes 

to the programmed parameters - UPC-E is expanded to UPC-A and 

UPC-A is expanded to EAN-13. This is done automatically when 

selecting AIM as the default, Hex 5. In addition, because all UPC/EAN 

numbers are treated as a single symbology you cannot select AIM (Hex 

4) when selecting a common byte for any of the UPC/EAN tags. 

Bar Code Type 

UPC-A, UPC-E EAN-8, EAN-13 

Code 39 

Interleaved 2 of 5 

Code 128 

Default AIM Identifiers 

45H 

41H 

49H 

43H


Common Byte 1 and Common Byte 2 

The Common Byte 1 and Common Byte 2 parameters permit you to 

specify the data sent to the host terminal or PC in the Common Byte 

fields. Input this information as two Hex characters for each Common 

Byte. Refer to the ASCII Code Chart in Chapter 7. Values of 20 to 7E are 

recommended. Do not use the same characters as the Terminator Byte 

or the message may terminate too soon. Also, a Common Byte cannot 

be 00. If you are not going to use a Common Byte, scan any Hex tag 

twice except Hex 0 or the Terminator Byte value. The following table 

gives the default values. 

Common Byte Hex ASCII 

Common Byte 1 5D ] 

Common Byte 2 42 B 

Note: You must scan four tags to go to the next parameter, even if you 

are using Common Byte 1 only, Common Byte 2 only or no Common 

Byte. Any four valid programming tags work. 

Bar Code Type 

The Bar Code Type parameter selects the bar code type for entering its 

associated label identifier information. After entering a Bar Code Type, 

enter the label identifier information as described in the following 

sections. This procedure repeats until you have changed all the label 

identifiers for each bar code type desired. Scan the Hex 0 through Hex 

6 tag to enter the appropriate Bar Code Type. Since you must select 

each of these individually for your application, there is no default for 

this parameter.


Common Byte 

The Common Byte parameter selects which common bytes, if any, to 

add to the bar code data message. Each entry is unique to the 

previously specified Bar Code Type. Scan the Hex 0 tag for no 

Common Bytes, the Hex 1 tag for Common Byte 1, the Hex 2 tag for 

Common Byte 2, the Hex 3 tag for both Common Bytes or Hex 4 for 

AIM Identifier. The default for this parameter uses Common Byte 2 as 

a suffix for Code 39, Code 128, and Interleaved 2 of 5 bar code data. 

UPC and EAN bar codes do not use Common Bytes. AIM uses 

Common Byte 1. AIM Identifiers are supported starting with Firmware 

release 497-0424514. When selecting AIM, no further entries are 

required for that label since they are defined by the AIM standard. 


The Unique Identifier parameter permits you to specify the data sent to 

the host terminal or PC in the Unique Identifier field. Each entry is 

unique to the previously specified Bar Code Type. Input this data as 

two Hex characters. Refer to the ASCII Code Chart in Chapter 7. Values 

of 20 to 7E are recommended. Using the same characters as the 

Terminator Byte causes the message to terminate too soon. The 

following table gives the default values 

Hex Tag Bar Code Type Hex ASCII 

0 UPC-A 41 A 

2 UPC-E 45 E 

3 EAN-8 46 F 

4 EAN-13 47 G 

5 Code 39 31 1 

6 Code 128 33 3 

7 Interleaved 2 of 5 32 2 

8 RSS 14 48 H 

9 RSSE 49 I



The Label Identifiers Programming mode contains 5 shortcuts: A 

through E. After entering this programming mode you can go directly 


(Hex A through Hex E). This eliminates the need to enter all 



Additional Bar Code Options 

The Additional Bar Code Options Programming mode contains two 

programming options. One parameter for sending Number System 

Character UPC data with all communication protocols except IBM. 

From this programming mode you can select whether or not to send 

the UPC Number System Character. The other permits output of ISBN 

EAN-13 tags in ISBN format or EAN-13 format. Refer to the Additional 

Bar Code Options Worksheet (19) in Chapter 7. 

Note: Only one selector may be made. 

UPC Number System Character 

This parameter determines whether the RealScan 7892 should include 

the UPC Number System Character with the UPC data. This applies to 

all communication protocols except IBM. If Hex 1 is selected, the UPC 

Number System Character (the first character on the UPC bar code) is 

included in the bar code data message. 

Hex 0 Disables Number UPC system character. 

Hex 1 Enables Number UPC system character (Default). 

ISBN Format 

An EAN-13 label which starts with 978 implies that the ISBN follows 

with an EAN-13 check digit. The ISBN consists of 9 digits and a check 

digit. When enabled, the 978 digits are dropped and the check digit for 

ISBN is calculated. Since the ISBN check digit is mod 11, an 'X' is sent 

when the value is 10. Note that only RS-232 and OCIA Long support 

this option. OCIA short formats do not allow full ASCII characters and 

IBM uses ASCII characters as an option so it is not implemented in 

these protocols. 

Hex 2 EAN-13 format used for ISBN tags (Default). 

Hex 3 Enables ISBN format translated from EAN-13 tag.


RS-232 Parameters - 1 

The RS-232 Parameters - 1 Programming mode contains four of the 

parameters required for RS-232 communications. From this 

programming mode you can select the Baud Rate, Parity, Stop Bits And 

Character Length, and Handshake Options. Refer to the RS-232 

Parameters - 1 Worksheet (20) in Chapter 7. 

Baud Rate 

Parity 

The Baud Rate parameter contains seven selections: 300 Baud, 600 

Baud, 1200 Baud, 2400 Baud, 4800 Baud, 9600 Baud, and 19200 Baud. 

Scan the appropriate Hex 0 through Hex 6 tag to set the desired Baud 

rate. The default is 9600 Baud. 

The Parity parameter contains five selections: Odd, Even, Mark, Space, 

and None. For 7-bit characters, bit 8 is the parity bit; for 8-bit 

characters, bit 9 is the parity bit. Choosing no parity and 7-bit character 

length causes the scanner to send two stop bits; the scanner must also 

receive two stop bits. Scan the appropriate Hex 0 through Hex 4 tag to 

select the desired Parity. The default is Odd. 

Stop Bits And Character Length 

The Stop Bits And Character Length parameter contains four 

selections: 1 Stop Bit and 7-Bit Character length (0), 1 Stop bit and 8-Bit 

Character length (1), 2 Stop Bits and 7-Bit Character length (2), and 2 

Stop Bits and 8-Bit Character length (3). Choosing no parity and 7-Bit 

Character length causes the scanner to send two stop bits; the scanner 

must also receive two stop bits. If you select 8-Bit Character length and 

parity, only one stop bit is sent. Scan the appropriate Hex 0 through 

Hex 3 tag to set the Stop Bits And Character Length. The default is 1 

Stop Bit and 7-Bit Character length.


Handshake 

The Handshake parameter contains six selections. When considering 

these, note that the scanner controls only RTS. It can monitor CTS. The 

following list identifies each Handshake option. 

• RTS is always low, CTS is ignored (Hex 0 tag). 

• RTS is always high, CTS is ignored (Hex 1 tag). 

• Scanner raises RTS and waits for CTS to go high before 

transmitting (Hex 2 tag). 

• Scanner raises RTS before transmitting and ignores the state of CTS 

(Hex 3 tag). 

• RTS is always low and scanner waits for CTS to go high before 


• RTS is always high and scanner waits for CTS to go high before 


Scan the appropriate Hex 0 through Hex 5 tag to set the Handshake 

option. The default is RTS High Wait For CTS. 


The RS-232 Parameters - 1 Programming mode contains four shortcuts: 

A, B, C, and D. After entering this programming mode you can go 

directly to a specific parameter by scanning the appropriate shortcut 

Hex tag (Hex A through Hex D). This eliminates the need to enter all 




The RS-232 Parameters - 2 Programming mode contains some of the 

parameters required for RS-232 communications. From this mode you 

can select BCC Options, Interface Control, Check Digit, and Retransmit 

On ACK Timer Expiration. Refer to the RS-232 Parameters - 2 


BCC Option 

The BCC Option parameters permit you to enable or disable using 

BCC. When enabled, the BCC is the last character sent. The BCC is the 

Exclusive OR of each byte sent prior to the BCC, except the prefix byte. 

Scan the Hex 0 tag to disable the BCC option, or scan the Hex 1 tag to 

enable it. The default is disabled. 

Interface Control 

The Interface Control parameter permits you to select how to control 

the transfer of data between the scanner and the host terminal or PC. 

The options are None, enable ACK/NAK, enable XOn/XOff, and 

enable both ACK/NAK and XOn/XOff. 

If you enable ACK/NAK, only tag messages sent to the host terminal 

or PC must be acknowledged before sending the next tag. NAK is sent 

and the scanner sends the tag message again. The scanner does not 

acknowledge messages from the terminal or host. 

An XOff message does not permit the transmission of data until the 

scanner receives an XOn message. An XOff message can be received 

any time. If the scanner is sending a message when it receives an XOff, 

data transmission stops after sending the current byte. When the 

scanner receives an XOn message it sends the remainder of the 

message. The scanner does not acknowledge XOff and XOn messages 

with ACK or NAK messages. 

Select the interface by scanning the appropriate Hex 0 through Hex 3 

tag. The default is None.


Check Digit 

The Check Digit parameter permits you to control the transmission of 

UPC-A, UPC-E, EAN-8, and EAN-13 check digits. Scan the appropriate 

Hex 0 through Hex 3 tags to enable or disable UPC-A, UPC-E, EAN-8, 

and EAN-13 check digits. The default is Enable UPC-A, EAN-8, and 

EAN-13 and Disable UPC-E. This option also affects OCIA Long on 

later versions of the firmware (497-0301339 and higher). 

Retransmit On ACK Timer Expiration 


This parameter is used with the Interface Control ACK/NAK 

parameter to cause the 7892 scanner to automatically resend the 

message to the host terminal or PC when the ACK Timer has expired. 

Scan the Hex 0 tag to disable the Retransmit On ACK Timer Expiration 

option, or scan the Hex 1 tag to enable it. The default is enabled. 

The RS-232 Parameters - 2 Programming mode contains four shortcuts: 

A, B, C, and D. After entering this programming mode you can go 

directly to a specific parameter by scanning the appropriate shortcut 

Hex tag (Hex A through Hex D). This eliminates the need to enter all 



RS-232 Prefix Byte 

RS-232 Prefix Byte Programming mode controls the use of prefix bytes. 

If you use an RS-232 Prefix Byte, it is the leading character in each 

message sent to the host terminal or PC. Following it is the message 

data. Refer to the RS-232 Prefix Byte Worksheet (22) in Chapter 7. 

Prefix Byte 

ASCII Code 

The Prefix Byte parameter contains two selections: Disable and Enable. 

Scan the Hex 0 tag to disable the Prefix Byte, or the Hex 1 tag to enable 

it. The default is Disable. 

The ASCII Code parameter permits you to specify what ASCII code to 

use for the Prefix Byte. Enter your selection by scanning the 

appropriate two Hex tags. Refer to the ASCII Code Chart in Chapter 7. 

You can select any value from 01 through 0F. Start Of Text (STX) 

ASCII Code 02 Hex is recommended. Scan the two appropriate Hex 

tags (Hex 0 through Hex 7 for the first character and Hex 0 through 

Hex F for the second). The default for this parameter is 02. 


The RS-232 Prefix Byte Programming mode contains 2 shortcuts: A and 

B. After entering this programming mode you can go directly to a 

specific parameter by scanning the appropriate shortcut Hex tag 

(Hex A or Hex B). This eliminates the need to enter all parameters 



RS-232 Terminator Byte 

Terminator Byte 

The RS-232 Terminator Byte Programming mode controls the use of 

terminator bytes. If you use an RS-232 Terminator Byte, it goes at the 

end of the message sent to the host terminal or PC. If you included a 

BCC (RS-232 Parameters - 2 Programming mode), it follows the 

Terminator Byte and includes the Terminator Byte in the calculation. 

Refer to the RS-232 Terminator Byte Worksheet (23) in Chapter 7. 

The Terminator Byte parameter contains two selections: Disable and 

Enable. Scan the Hex 0 tag to disable the Terminator Byte, or the Hex 1 

tag to enable it. The default is Enable. 

ASCII Code 

The ASCII Code parameter permits you to specify what ASCII code to 

use for the Terminator Byte. Enter your selection by scanning the 

appropriate two Hex tags. Refer to the ASCII Code Chart in Chapter 7. 

You can select any value from 01 through 0F. The End Text (ETX) 

ASCII Code 03 Hex or a Carriage Return (CR) 0D Hex is 

recommended. Scan the two appropriate Hex tags (Hex 0 through 

Hex 7 for the first character and Hex 0 through Hex F for the second). 

The default for this parameter is 03. 

Second Terminator Byte 

This program is direct entry only. This option sends scan data with two 

terminating bytes: 

2 3 C 0 Disable (Default) 

2 3 C 1 Enable (must enter ASCII Code parameter as noted above)



The RS-232 Terminator Byte Programming mode contains 3 shortcuts: 

A, B and C. After entering this programming mode you can go directly 


(Hex A, Hex B, or Hex C). This eliminates the need to enter all 



Communications Options 

The Communications Options Programming mode controls parameters 

associated with the RealScan 7892 communications. Options in this 

mode were added in July of 1993 and January of 1994. If your scanner 

does not respond to any of these options, they are not in your 

firmware. 

For these options the scanner firmware is programmed to accept only 

one parameter at a time. It then returns to the base programming state. 

Therefore, each of the parameters must be programmed separately. 

Refer to the Communications Options Worksheet (24) in Chapter 7. 

Send IBM Tags in Hex or ASCII 

Some IBM systems send/receive the IBM tags as hex data, and others 

use ASCII. ASCII data format is often required with the Hand Held Bar 

Code Reader (option 10-6 under Communications Protocol). Scan the 

Hex 0 tag to send/receive the tags as hex data. Scan the Hex 1 tag to 

send/receive them as ASCII data. Sending hex data is the default (for 

the IBM data protocol #3 and for ASCII protocol #4 and #6). 

Maintain or Drop OCIA Message Data/Retries on IBM 

Some systems want the scanner to hold OCIA tag data until the 

terminal clocks it, and some systems prefer to have the scanner just 

drop the data after one to two seconds. If you scan the Hex 4 tag, the 

RealScan 7892 holds or maintains the OCIA tag data. If you scan the 

Hex 5 tag, the scanner drops the data after one to two seconds. Holding 

the tag data is the Default.


When you use an IBM terminal and the scanner detects a bad message 

from the terminal, this parameter controls how the original message 

gets transmitted again. If you scan the Hex 4 tag, the scanner transmits 

the original message forever. If you scan the Hex 5 tag, the scanner 

only retransmits the original message three times. After failing three 

times, the scanner reinitiates communications and attempts to transmit 

the tag data again. (Do not use this selection unless advised to do so by 

NCR to solve a problem.) Retrying forever is the Default. 

RS-232 Mode: Normal or Eavesdrop 

The Eavesdrop Mode is a method of physical connection between the 

RealScan 7892 and its host (PC) that places a “dumb CRT” between the 

host and the scanner. This mode permits the RealScan 7892 to accept 

input from the “dumb CRT” and then transmit the data on its own 

transmit line to the host. (If the scanner receives data while it is 

transmitting, the data is lost.) When using this mode, a special 

Eavesdrop Mode cable is required. Data transmitted by the terminal is 

sent to the RealScan 7892 and re-transmitted to the host. Data from the 

host is sent to the "dumb CRT". The scanner sends its data to the host. 

In Normal Mode, the RealScan 7892 transmits and receives directly 

with the host. If you scan the Hex 6 tag, the scanner receives and 

transmits to match the Normal RS-232 connection. If you scan the Hex 

7 tag, the scanner receives and transmits to match the Eavesdrop 

connection. Normal RS-232 connection is the Default. 

RS-232 Delay 

You can select three different delays between messages when using RS- 

232 communications. If you do not want any delay, scan the Hex 8 tag. 

Scan the Hex 9 tag for a 10-millisecond delay or the Hex A tag for a 50- 

millisecond delay. Selecting the proper delay can ensure that all tag 

data is received by the host. When using Handshaking, at least a 10 ms 

delay should be used to ensure that the host has sufficient time to 

exercise refusal of the next message. The default is 10 ms for the 

RealScan 7892.


OCIA NCR Short Soft Reset 

This program parameter permits the RealScan 7892 to receive a soft 

reset command in OCIA Short format without parity information from 

the terminal. The default is set to receive an OCIA Short soft reset 

command with parity. A soft reset causes the scanner to do a scanner 

enable.


Single Line Scanning (option) 

Switch Activation 

Single Line Scanning (RealScan 7892-0100/0200) may be disabled. 

Under Single Line Scanning two additional options are programmable. 

The Default with Single Line Scanning is Enable. Refer to the Single 

Line Options Worksheet (25) in Chapter 7. 

The scanner switch has two positions. The default (Hex 1) sets the 

switch to work as a double position switch; the first position shows the 

scan line and the second position permits decoding of the data. The 

other option (Hex 0) sets the switch as a single position switch, where 

the first position both shows the scan line and reads the bar code. 

Line Width 

You may set the scanner for either Narrow Line or Wide Line. Wide 

Line is the normal line width, and is set with Hex 1. Narrow Line 

reduces the line width approximately 30%, and is set with Hex 0. Wide 

Line is the default.


Parameter Version Number 

You can keep track of the current version of the parameter settings by 

assigning a Parameter Version Number. The version number is a two 

byte entry, which means four Hex tags must be scanned. Each hex tag 

value can range from 0 - F. Refer to the Parameter Version Number 

Worksheet (27) in Chapter 7.


Wedge Options 

The Wedge Options Programming mode controls parameters 

associated with the RealScan 7892-0200/0300. Refer to the Wedge 

Options Worksheet (28) in Chapter 7. 

Country Code 

Caps Lock 

The two options for Country Code are United States and International. 

Scan the Hex 0 tag for United States. Scan Hex 1 for International. 

United States is the default. 

This option permits you to select the state of the Caps Lock Key when 

using Code 128 or Code 39 labels. The scanner assumes a fixed state 

for the Caps Lock Key; it does not track the state of the Caps Lock Key. 

The Shift Key is used by the scanner to output the appropriate upper or 

lower case character depending on the data in the bar code. Scan the 

Hex 0 tag for Caps Lock OFF or the Hex 1 tag for Caps Lock ON. Caps 

Lock ON is the default. 

Number Lock and Keypad 

Normally the number keys above the letters on a keyboard are used to 

output numbers. However, some applications may use the numeric 

keypad. When the numeric keypad is used, the state of the Num Lock 

Key may be ON or OFF. 

Scan the Hex 0 tag for Keypad not Used; the Hex 1 tag for Keypad 

Used Num Lock OFF; or the Hex 2 tag for Keypad Used Num Lock 

ON.


Intercharacter Delay 


Intercharacter Delay permits additional delay between the 

transmission of each keycode character. Most terminals today can use 

the Default value of every 4 milliseconds. The times are based on 

motor speed (not on a clock) and are approximate. Scan the 

appropriate Hex tag (Hex 0 – Hex 4) for the desired delay. 

Intercharacter Delay options are Every 4 ms, Every 12 ms, Every 24 ms, 

Every 48 ms, or Every 96 ms. 

The Wedge Options Programming mode contains 4 shortcuts: A, B, C 

and D. After entering this programming mode you can go directly to a 

specific parameter by scanning the appropriate shortcut Hex tag 

(Hex A, Hex B, Hex C or Hex D). This eliminates the need to enter all 



Scanner Programming Summary 

Creating the Program 

Entering the Program 

The following is a summary of how to program your RealScan 7892. 

Use this summary along with the information contained in this 

chapter. 

1. Identify your requirements 

Determine the requirements of your program. This includes 

information about the communication protocol, information about 

the types of bar codes you scan, the use of good read tones, and 

scanner timeouts. 

2. Complete the Programming Worksheets 

Using the descriptions contained in this chapter, complete each 

Programming Worksheet. Write your program in the space 

provided. 

1. Prepare the RealScan 7892 

Apply power to the RealScan 7892, then scan the Programming 

Mode tag. This puts the scanner in the Base Programming state. 

2. Determine the Default 

Decide on the Default if it is different from the way the unit was 

received. Make all other parameter selections after selecting the 

Default. 

3. Select the specific Programming Worksheet 

Scan the two Hex tags for a specific programming mode, then enter 

all the parameter data for it. After entering all the parameter 

information, the scanner returns to the Base Programming state. 

Note: To exit a specific programming mode without entering all 

the parameters, scan the Abort tag. All parameters entered are 

saved and the scanner returns to the Base Programming state.


Saving the Program 

4. Select the next specific Programming Worksheet 

Repeat step 3 for each Programming Mode. You do not need to 

enter a specific programming mode if its associated programming 

does not need to be changed. 

1. Scan the Save and Reset tag 

When you scan the Save and Reset Tag, the scanner saves all the 

programming parameters you entered. This becomes the new 

scanner program. The scanner goes through initial start-up and 

operates using the new program. 

Note: To exit the Base Programming state without saving any 

parameters, scan the Abort tag. The scanner goes through initial 

start-up and operates using the old program. 

2. Save your programming worksheets 

Be sure to save your Programming Worksheets that contain the 

scanner program. It is much easier to reenter the program, or 

change some of it, if you have a written record of the existing 

program. The worksheets are also used after repair or replacement 

of the unit.


USB Programming 

The RealScan 7892 must be properly programmed when using the USB 

Dongle connection to the host terminal. This programming depends on 

the type of host terminal being used. 

Note: Some host terminals can corrupt your program if they are 

running and are connected to the RealScan 7892 while you are entering 

the program. Turn the host terminal off or disconnect all interface 

cables to the RealScan 7892 before entering your program. 

RS-232 Communications 

The RealScan 7892 must be programmed for RS-232 communications 

protocol and some of the RS-232 parameters must be set to specific 

values. Other parameters may be set as required by the host terminal. 

Set the required program parameters by scanning the following 

sequence of programming tags. These must be the first tags scanned 

after supplying power to the unit. 

1. Programming Mode tag – puts scanner in base programming state. 

2. Hex 3, Hex 0, Hex B, Hex 5 – sets the required RS-232 

programming parameters. 

• RS-232 communications protocol 

• 9600 baud 

• Odd parity 

• 1 stop bit, 7-bit character 

3. Save and Reset – saves the program just entered and resets the 

RealScan 7892. 

The host terminal software may now be configured to use the 

communication port assigned by the IO Network driver when the 

Dongle Adapter Cable was plugged into the USB port.


IBM Communications 

The host terminal should assign the port and associate the scanner with 

the application when the USB connection is made. When programming 

a RealScan 7892 for IBM USB communications, all parameters are set to 

the standard default values, and the communications protocol is set to 

IBM USB. This is accomplished by scanning the following sequence of 

programming tags. These must be the first tags scanned after 

supplying power to the unit. This option is currrently only available in 

firmware 497-0426893. 

1. Programming Mode tag – puts scanner in base programming state. 

2. Hex 3, Hex 0, Hex E, Hex 1 – sets all parameters to standard default 

values and sets the communication protocol to IBM USB. 

3. Change any other parameters as required by the host terminal. 

4. Save and Reset – saves the program just entered and resets the 

RealScan 7892.

Chapter 6: Troubleshooting 

Your RealScan 7892 RealScan uses tones and the Status Indicator light 

to identify problems. It performs diagnostics that check various 

scanner functions at different times. Diagnostic checks are made each 

time power is applied to the scanner and while the scanner is 

operating. 

If your RealScan 7892 does not work properly, you might be able to 

determine the problem and correct it without having to send the 

scanner in for repair. Use the following steps to help isolate the 

problem. 

1. Identify exactly what the scanner is doing, or not doing. Pay 

particular attention to the Status Indicator light and the tone. 

2. Verify that you are operating the scanner according to the 

procedures described in Chapter 4, Operating Your Scanner. 

3. Refer to the following table to see if your scanner condition is 

identified. If your specific problem is not identified, follow your 

normal repair procedures. This may include sending your RealScan 

7892 in for repair.

6-2 Chapter 6: Troubleshooting 

Problem 

Scanner does not 

operate. 

• Laser light off 

• Motors off 

• Interface Cable 

Connector Box 

light off 

Status 

Indicator 

Tone Possible Cause Corrective Action 

Off Off No power to the 

unit. 

• Check the electrical 

outlet for proper 

power. 

• Check all cables for 

being connected 

properly. 

• Check fuse in 


Connector Box. 

• Check power cable 

connection. 


operate. 

Off Off Internal failure Send in for repair. 

• Laser light off 

• Motors off 


operate 

• Cannot read bar 

codes 

Flashes 

Red 

Series of 

beeps at 

3-second 

intervals 

Internal failure 

Have scanner repaired. 

• Problem still 

exists after 

removing power 

and then 

supplying power 

again 

Laser light does 

not go off. 

Red, 

Green, or 

none 

On or Off Internal failure 

Remove power 

IMMEDIATELY and 

have scanner repaired.

Chapter 6: Troubleshooting 6-3 

Problem 

Scanner reads only 

two tags. 

Status 

Indicator 

Normal 

Tone Possible Cause Corrective Action 

Normal Communication 

failure 

• Check the host 

terminal or PC for 

proper operation. 


read labels. All 

other indications 

normal and unit 

programmed 

properly 


communicate to 

host terminal when 

using IBM 468x 

communications. 


operate when 

using IBM 468x 

communications. 

Red Off Internal failure 

Series of 9 

Red 

flashes at 

3-second 

intervals 

Red 

Rapidly 

flashes 

Red 

Off 

None 

Bar code tag 

may not be able 

to be read for a 

specified 

communication 

protocol. 

Host terminal is 

not turned on. 

Cables 

disconnected 

between 

RealScan 7892 

and host 

terminal. 

Host terminal 

has not 

established 

communications 

with the 

RealScan 7892. 

Host terminal 

has sent the 

RealScan 7892 a 

command to 

prevent it from 

reading bar 

codes. 

• Check the protocol 

programmed 

Have scanner repaired. 

Turn on host terminal 

Check Scanner Module 

cable and Interface 

cable for proper 

connection. 

Refer to host terminal 

and application 

documentation. Check 

programmed options 

(103 vs 104 vs 106). 

Terminal should 

enable the 7892 later in 

the transaction.

6-4 Chapter 6: Troubleshooting 

Repairing Your RealScan 7892 

If you have determined that you cannot correct a problem with your 

scanner, you can return it to the factory for repair or make 

arrangements for repair at your location. Contact your NCR 

Representative for information about the cost and any specific 

instructions. 

When returning your RealScan 7892 to the factory, pack it in the 

shipping carton that you saved when you received your scanner. The 

illustration on the top flap of the box shows how to pack your scanner 

in the box. Send only the RealScan 7892. Do not include the Power 

Module, Scanner Module Cable, and Interface Cable. Also, include a 

description of the problem; be as specific and complete as possible. Be 

sure to include your name and address. 

If you did not save your shipping carton, use another box suitable for 

shipping. Be sure to pack your scanner with enough packing material 

to prevent damage during shipment.

Chapter 6: Troubleshooting 6-5 

Fuse (old cable only) 

Your RealScan 7892 does not contain a fuse inside the cabinet. 

However, there is a fuse in the connector box on the end of the 

Interface Cable. The green light on the connector box should be on if 

the Power Module is plugged into the proper electrical outlet and is 

connected to the scanner. If the light is off, you may need to replace 

the fuse inside the connector box. The fuse has the following values. 

• 1.5 Amp 

• Slo/blo 

• 125 Volts

Chapter 7: Program Defaults/Worksheets 

Identifying Program Defaults 

The following are the default values that are set when you scan the 

Default programming tag unless otherwise specified. 

Programming Mode Program Parameters Default Setting 

Communications Protocol Protocol Depends on Default selected on 

Worksheet 30 

Good Read Tone 

Volume 

Timers 

Bar Codes - 1 

Tone On/Off 

Tone Frequency (7892) 

Tone Length (7892) 

Lockout Time 

Restart Lockout Timer 

Active Time 

Multiplier 

UPC/EAN 

Extend UPC-A to EAN-13 

Extend UPC-E to UPC-A 

Periodical Codes * 

Periodical Code Extension * 

Send Data * 

Bar Codes - 2 Code 39 

Minimum Characters Allowed 

Full ASCII 



Allow Single Character Tags 

Bar Codes - 3 Interleaved 2 of 5 

Bar Code Length 

Value 1 

Value 2 



Bar Codes - 4 Code 128 

Minimum Data Characters 

UCC 128 

Bar Codes - 5 

RSS Enable 

Scans Required for RSS 14 

Scans Required for RSS 14E 

UCC 128 Emulation Mode 

On 

High 

75 Milliseconds (high) 

450 Milliseconds 

On 

5 Minutes 

Disable 

Enable 

Disable 

Disable 

Disable 

2-Digit & 5-Digit 

Data As Decoded 

Disable 

4 

Disable 

Disable 

Disable 

Disable 

Disable 

Range Check 

08 

16 

Disable 

Disable 

Disable 

3 

Disable 

Disable 

1 

1 

Normal

7-2 Chapter 7: Program Defaults/Worksheets 

Programming Mode Program Parameters Default Setting 

Label Identifiers 


Common Byte 1 

Common Byte 2 

Bar Code Type 

Common Byte 


Version Number (UPC-D) 

Default Prefix 

5D 

42 

Not Applicable 



Do Not Include 

Additional Bar Code Options UPC Number System Character 

ISBN 

Send 

Disable ISBN 



Baud Rate 

Parity 

Stop Bits And Character Length 

Handshake 

BCC Options 

Interface Control 

Check Digit 

Retransmit On ACK/NAK Timer 

Expiration 

RS-232 Prefix Byte 

Prefix Byte 

Disable 

ASCII Code 

02 

RS-232 Terminator Byte Terminator Byte 

Enable 

ASCII Code 

03 

Second terminator Byte 

Disable 

Version # 0000 

Single line 

Enable/Disable 

Single/Dual 

Switch Action 

Line width 

Wide 

Communications Options 

Wedge Options 

Send IBM Tags in Hex or 

ASCII 

Maintain or Drop OCIA 

Tag Message Data or 

Retries on IBM Message 

RS-232 Mode 

RS-232 Delay (7892) 

OCIA NCR Short Soft Reset 

Country Code 

Caps Lock 

Number Lock & Keypad 

Inter Character Delay 

9600 

Odd 

1 Stop Bit, 7-Bit Character 

RTS High, Wait For CTS 

Disable 

None 

Enable UPC-A 

Enable EAN-8 

Enable EAN-13 

Disable UPC-E (Enable 0200 only) 

Enable 

Enable with S.L. feature 

Dual 

Hex 

Maintain 

Unlimited 

Normal 


Parity 

United States 

Caps Lock ON 

Keypad not Used 

Every 4ms

Chapter 7: Program Defaults/Worksheets 7-3 

Using the Programming Worksheets 

The Programming Worksheets provide a convenient method of 

defining your RealScan 7892 program before loading it into the 

scanner. Each worksheet relates to a specific programming mode. Enter 

your selections and changes on the Worksheets. Save this information 

for future use should it be necessary to re-enter this program. 

Most of the programming options have defaults that are determined at 

the factory. A bolded box around an entry selection specifies it as the 

default value. Scanning the Default tag as the first tag after applying 

power to the RealScan 7892 sets the parameters to these values. The 

scanner also indicates via beeps the Default setting. 

Enter the program into your scanner by scanning the proper sequence 

of programming tags found in the NCR Scanner Programming Tags book 

(BST0-2121-74). Following are the three major steps to programming 

your scanner. 

1. Enter the Base Programming state by scanning the Programming 

Mode tag as the first tag after applying power to your 7892 

scanner. 

2. Select a Programming Worksheet and enter its parameter data by 

scanning the Hex tags identified in Your Program at the bottom of 

the Programming Worksheet. Repeat this for each worksheet. 

3. Save your program by scanning the Save and Reset Tag. 

Caution: Some host terminals can corrupt your program if they are 

running and are connected to the RealScan 7892 while you are entering 

a program. Either turn off the host terminal or disconnect the interface 

cable from the host terminal before entering your program. 

Note: In most instances the factory determined defaults are the correct 

parameter settings. Normally you only need to change a few of these 

parameters and do not need to enter all the Programming Worksheets. 

When programming your scanner, it is recommended that you first set 

all the parameters to default values by scanning the Default tag, then 

make any necessary changes to the appropriate parameters.


Programming Worksheets 

3 0 Default Settings 

B 

Protocol 

0 

1 

2 

3 

OCIA 

NCR Short 

OCIA 

NCR Long 

OCIA 

Non-NCR Short 

IBM 468x 

Select 

Address 4A 

Slot Scanner 

Hex Data 

4 

5 

6 

7 

IBM 468x 

Select 

Address 4B 

(1520 BCR) 

ASCII Data 

RS-232 

7892-0100 


IBM 468x 

Select 

Address 4B 

(HHBCR) 

ASCII Data 

Wedge 



Your Program 

B 

3 0 

Default 

Settings 

Protocol 

19341


1 0 Communications Protocol 

Protocol 

0 

1 

2 

3 

4 

OCIA 

NCR Short 

OCIA 

NCR Long 

OCIA 

Non-NCR Short 

IBM 468x 

Select 

Address 4A 

Slot Scanner 

Hex Data 

IBM 468x 

Select 

Address 4B 

(1520 BCR) 

ASCII Data 

5 

6 

RS-232 



IBM 468x 

Select 

Address 4B 

(HHBCR) 

ASCII Data 

Your Program 

1 0 

Communications 

Protocol 

Protocol 

19321


1 1 Good Read Tone 

A 

Tone On/Off 

0 

1 

Off 

On 

B 

Tone Length 

(Milliseconds) 

0 

25 

1 

50 

2 

75 

3 

100 

4 

125 

5 

6 

7 

8 

9 

150 

175 

220 

225 

250 

C 

Tone Volume 

0 

1 

Low 

High 

Your Program 

A 

B 

C 

1 1 

Good 

Read Tone 

Tone 

On/Off 

Tone 

Length 

Tone 

Volume 

19322


1 2 Timers 

A 

Lockout Time 

(Milliseconds) 

0 

450 

1 

600 

2 

750 

3 

900 

4 

1050 

5 

6 

7 

1200 

1350 

1500 

B 

Restart 

Lockout Timer 

0 

1 

On 

Off 

C 

Active Time 

(Minutes) 

0 

1 

2 

3 

4 

5 

5 

10 

15 

20 

25 

30 

Your Program 

A 

B 

C 

1 2 

0 

Timers 

Lockout 

Time 

Restart 

Lockout 

Timer 

Active 

Time 

Note:The last Hex 0 is only required in 

firmware below 497-0419687. 

19323


1 3 Bar Codes – 1 

A 

UPC/EAN 

0 

1 

Disable 

Enable 

B 

Extend UPC-A 

To EAN-13 

0 

Disable 

1 

Enable 

C 

Extend UPC-E 

UPC-A 

0 

Disable 

1 

Enable 

D 

Periodical 

Codes 

0 

Disable 

1 

Enable 

Periodical 

Code 

Extension 

0 

2-Digit 

Only 

1 

5-Digit 

Only 

2 

2-Digit & 

5-Digit 

Send Data 

0 

1 

2 

Data As 

Decoded 

Periodical Code 

Data Only 

7F Hex If 

Periodical Data 

Not Decoded 

Your Program 

A 

B 

C 

C 

1 3 

Bar Codes - 1 

UPC/EAN 

Extend 

UPC-A To 

EAN-13 

Extend 

UPC-E To 

UPC-A 

Periodical 

Codes 

Periodical 

Code 

Extension 

Send 

Data 

19324



A 

Code 39 

0 

1 

Disable 

Enable 

B 

Minimum 

Characters 

Allowed 

2 - F 

Disable 

Default 

4 

C 

Full ASCII 

0 

1 

Disable 

Enable 

D 

Check Digit 

Present 

0 

Disable 

1 

Enable 

E 

Transmit 

Check Digit 

0 

1 

Disable 

Enable 

F 

Allow Single 

Character 

Tags 

0 

Disable 

1 

Enable 

Your Program 

A 

B 

C 

D 

E 

F 

1 4 

Bar Codes - 2 

Code 39 

Minimum 

Characters 

Allowed 

Full ASCII 

Check 

Digit 

Present 

Transmit 

Check 

Digit 

Allow 

Single 

Character 

Tags 

19325



A 

Interleaved 

2 of 5 

0 

1 

Disable 

Enable 

B 

Bar Code 

Length 

0 

1 

Range 

Check 

Specific 

Check 

Value 1 

Character 

Minimum 

0 - 5 

0 - 9 

Character 1 

Character 2 

Default 0 8 

Value 2 

Character 

Minimum 

0 - 5 

0 - 9 

Character 1 

Character 2 

C 

Check Digit 

Present 

0 

1 

Default 1 6 

Disable 

Enable 

D 

Transmit 

Check Digit 

0 

1 

Disable 

Enable 

Your Program 

A 

B 

C 

D 

1 5 

Bar Codes - 3 

Interleaved 

2 of 5 

Bar Code 

Length 

Value 1 Value 2 

Check 

Digit 

Present 

Transmit 

Check 

Digit 

19326



A 

Code 128 

0 

1 

Disable 

Enable 

B 

Minimum Data 

Characters 

Allowed 

1 2 3 4 5 

C 

UCC 128 

0 

1 

Disable 

Enable 

Your Program 

A 

B 

C 

1 7 

Bar Codes - 4 

Code 128 

Minimum Data 

Characters 

Allowed 

UCC 128 

19328



A 

RSS Enable 

0 

1 

2 

3 

Disable 

Enable 

RSS 14 Only 

Enable 

RSS14E Only 

Enable 

RSS 14 & 

RSS 14E 

B 

Scans Required 

On RSS 14 

1 

1 Scan 

2 

2 Scans 

3 

3 Scans 

4 

4 Scans 

C 


On RSS 14E 

1 

1 Scan 

2 

2 Scans 

3 

3 Scans 

4 

4 Scans 

D 

UCC-128 

Emulation 

Mode 

0 

Normal Mode 

1 

UCC-128 

Emulation Mode 

Your Program 

A 

B 

C 

D 

1 8 

Bar Codes - 5 

RSS Enable 


On RSS 14 


On RSS 14E 

UCC-128 

Emulation Mode 

20583


1 6 Label Identifiers 

A 


0 1 

Default 

Prefix 

Default 

Suffix 

2 3 4 5 

None 

Unique 

Prefix 

Unique 

Suffix 

AIM 

B Common Byte 1 0 - 7 0 - F Default: 5 D 

Hex Character Hex Character 

C Common Byte 2 0 - 7 

0 - F Default: 4 2 

Hex Character Hex Character 

D Bar Code Type 0 1 2 3 4 5 6 7 8 

UPC-A UPC-E EAN-8 EAN-13 Code Code Interleaved RSS RSSE 

39 128 2 of 5 14 

Common Byte 0 1 

2 3 

4 

None Common Common 

Both 

AIM 

Byte 1 

Byte 2 Common Bytes 


0 - 7 0 - F 

Hex Character 

Hex Character 

Default: Varies according 

to Bar Code Type 

Your Program 

A 

B 

C 

D 

E 

1 6 

0 

Label Identifier 

Identifier 

Type 

Common 

Byte 1 

Common 

Byte 2 

Bar Code 

Type 

Common 

Byte 

Unique 

Identifier 

1 2 

3 

4 

5 

6 

7 8 

19327


1 9 Additional Bar Code Options 

UPC Number 

System Character 

ISBN Option 

0 1 

Do Not Send Send 

2 3 

Disable ISBN Enable ISBN 

Note: ISBN option is not available 

with IBM protocols. 

Your Program 

1 9 

Additional Bar 

Code Options 

UPC Number 

System Character 

ISBN 

Option 

19332


2 0 RS-232 Parameters – 1 

A 

Baud Rate 

0 

1 

2 

3 

4 

5 

6 

300 

600 

1200 

2400 

4800 

9600 

19200 

B 

Parity 

0 

1 

2 

3 

4 

Odd 

Even 

Mark 

Space 

None 

C 

Stop Bits 

And 

Character 

Length 

0 

1 Stop Bit 

7-Bit Character 

1 



2 



3 



D 

Handshake 

0 

1 

2 

RTS Low 

CTS Ignored 

3 

Raise RTS 

Ignore CTS 

RTS High 

CTS Ignored 

4 

RTS Low 

Wait For CTS 

Raise RTS 

Wait For CTS 

5 

RTS High 

Wait For CTS 

Your Program 

A 

B 

C 

D 

2 0 

RS-232 

Parameters - 1 

Baud Rate 

Parity 

Stop Bits 

And 

Character 

Length 

Handshake 

19333


2 1 RS-232 Parameters – 2 

A 

BCC Option 

0 

Disable 

1 

Enable 

B 

Interface 

Control 

0 

1 2 3 

None ACK/NAK XOn/XOff ACK/NAK & XOn/XOff 

C 

Check Digit 

0 1 

2 * 3 

Disable UPC-A 

Disable EAN-8 

Disable EAN-13 

Disable UPC-E 

Enable UPC-A 

Enable EAN-8 

Enable EAN-13 

Disable UPC-E 

Disable UPC-A 

Disable EAN-8 

Disable EAN-13 

Enable UPC-E 

Enable UPC-A 

Enable EAN-8 

Enable EAN-13 

Enable UPC-E 

D 

Retransmit On 

ACK/NAK 

Timer 

Expiration 

0 

Disable 

1 

Enable 

*Default for 0200 

Your Program 

A 

B 

C 

D 

2 1 

RS-232 

Parameters - 2 

BCC 

Options 

Interface 

Control 

Check 

Digit 

Retransmit On 

ACK/NAK Timer 

Expiration 

19334


2 2 RS-232 Prefix Byte 

A 

Prefix Byte 

0 

1 

Disable 

Enable 

B 

ASCII Code 

0 - 7 

0 - F 

Default 

0 2 

Hex Character 

(ASCII Code Chart) 

Hex Character 


Your Program 

A 

B 

2 2 

RS-232 

Prefix Byte 

Prefix Byte 

ASCII Code 

19335


2 3 RS-232 Terminator Byte 

A 

Terminator 

Byte 

0 

Disable 

1 

Enable 

B 

ASCII Code 

0 - 7 

0 - F 

0 3 

Default 

Hex Character 


Hex Character 


0 0 

Not Allowed 

C 

Second 

Terminator 

Byte 

0 

Disable 

1 

Enable 

Note: Second Terminator Byte 

is a direct entry only. 

D 

ASCII Code 

0 - 7 

0 - F 

0 0 

Not Allowed 

Hex Character 


Hex Character 


Your Program 

A 

B 

C 

D 

2 3 

RS-232 

Terminator Byte 

Terminator 

Byte 

ASCII Code 

Second 

Terminator 

Byte 

ASCII Code 

19336


2 4 Communications Options 

Send IBM Tags 

In Hex Or ASCII 

0 

In Hex 

1 

In ASCII 

Default 

0 if Worksheet 30 = B3 

1 if Worksheet 30 = B4 or B6 

Maintain Or Drop 

OCIA Message 

Data Retries On 

IBM Messages 

4 

Unlimited 

5 

Three Times 

RS-232 Mode 

6 

7 

Normal 

Eavesdrop 

RS-232 Delay 

8 

9 

A 




OCIA NCR Short 

Soft Reset 

B 

C 

No Parity 

Parity 

Your Program 

2 4 

Communication 

Options 

Send IBM 

Tags In Hex 

Or ASCII 

Maintain Or 

Drop OCIA 

Message Data 

Retries On IBM 

Message 

RS-232 

Mode 

RS-232 

Delay 

OCIA NCR 

Short 

Soft Reset 

19337


2 5 Single Line Options 

A 

Single Line 

0 

1 

Disable 

Enable 

B 

Switch 

Activation 

0 

Single 

Position 

Activation 

1 

Double 

Position 

Activation 

C 

Line Width 

0 

1 

Narrow Line 

Wide Line 

Your Program 

A 

B 

C 

2 5 

Single Line 

Options 

Single Line 

Switch 

Activation 

Line Width 

19338 

2 7 Parameter Version Number 

Parameter 

Version 

Number 

0 - F 0 - F 0 - F 0 - F 

Default 

0 0 0 0 

Your Program 

2 7 

Parameter 

Version 

Number 

Parameter 

Version 

Number 

19339


2 8 Wedge Options 

A 

Country Code 

Option 

0 

United States 

1 

International 

B 

Caps Lock 

Option 

0 

Off 

1 

On 

C 

Number Lock & 

Keypad Option 

0 

Keypad Not 

Used 

1 

Keypad Used 

Num Lock Off 

2 

Keypad Used 

Num Lock On 

D 

Inter Character 

Delay 

(Milliseconds - 

Approximate) 

0 

4 

1 

12 

2 

24 

3 

48 

4 

96 

Your Program 

A 

B 

C 

D 

2 8 

Wedge 

Parameter 

Options 

Country Code 

Option 

Caps Lock 

Option 

Number Lock & 

Keypad Option 

Inter Character 

Delay (Milliseconds - 

Approximate) 

19340


ASCII Code Chart 

R0040 

70 

71 

72 

73 

74 

75 

76 

77 

78 

79 

7A 

7B 

7C 

7D 

7E 

7F 

p 

q 

r 

s 

t 

u 

v 

w 

x 

y 

z 

{ 

| 

} 

DEL 

60 

61 

62 

63 

64 

65 

66 

67 

68 

69 

6A 

6B 

6C 

6D 

6E 

6F 

a 

b 

c 

d 

e 

f 

g 

h 

i 

j 

k 

l 

m 

n 

o 

50 

51 

52 

53 

54 

55 

56 

57 

58 

59 

5A 

5B 

5C 

5D 

5E 

5F 

P 

Q 

R 

S 

T 

U 

V 

W 

X 

Y 

Z 

[ 

\ 

] 

^ 

_ 

40 

41 

42 

43 

44 

45 

46 

47 

48 

49 

4A 

4B 

4C 

4D 

4E 

4F 

@ 

A 

B 

C 

D 

E 

F 

G 

H 

I 

J 

K 

L 

M 

N 

O 

30 

31 

32 

33 

34 

35 

36 

37 

38 

39 

3A 

3B 

3C 

3D 

3E 

3F 

0 

1 

2 

3 

4 

6 

5 

7 

8 

9 

: 

; 

< 

= 

> 

 

20 

21 

22 

23 

24 

25 

26 

27 

28 

29 

2A 

2B 

2C 

2D 

2E 

2F 

SP 

! 

" 

# 

$ 

% 

& 

' 

( 

) 

* 

+ 

, 

- 

. 

/ 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

1A 

1B 

1C 

1D 

1E 

1F 

DLE 

DC1 

DC2 

DC3 

DC4 

NAK 

SYN 

ETB 

CAN 

EM 

SUB 

ESC 

FS 

GS 

RS 

US 

00 

01 

02 

03 

04 

05 

06 

07 

08 

09 

0A 

0B 

0C 

0D 

0E 

0F 

NULL 

SOH 

STX 

ETX 

EOT 

ENQ 

ACK 

BEL 

BS 

HT 

LF 

VT 

FF 

CR 

S0 

S1 

ASCII Code Chart 

~

Index 

—A— 

Additional Bar Code Options, 5-33 

Audible Indicator, 4-10 

—B— 

Bar Code Quality, 4-12 

Bar Codes - 1, 5-15 





—C— 

Communications Options, 5-41 

Communications Protocol, 5-10 

—D— 

Default Settings, 5-9 

Determining the Communication 

Protocol, 3-6 

—G— 

Good Read Tone, 5-11 

—I— 

Identifying Available Kits, 3-5 

Identifying Program Defaults, 7-1 

IEC Class 1 Laser Identification, xiii 

Indicator Functions, 4-11 

Installing the 7892-0200 (Wedge), 3-11 

Installing the Scanner, 3-8 

—L— 

Label Identifiers, 5-26 

Label Orientation, 4-5 

Label Rotation, 4-8 

Laser Power, xiv 

Laser Safety, xiii 

Laser Safety Label, xiii 

Laser Scanning, 1-3 

—M— 

Modifying the Scanner Program, 3-14 

—P— 

Parameter Version Number, 5-45 

Physical Considerations, 2-1 

Pick-Up Scanning, 4-4 

Power Considerations, 2-3 

Presentation Scanning, 4-2 

—R— 

Read Indicators, 4-10 

Reduced Space Symbology (RSS), 4-13 

Reduced Space Symbology (RSS) bar 

codes, 5-24 

Reporting a Damaged Scanner, 3-1 

RS-232 Parameters - 1, 5-34

Index-2 

RS-232 Parameters - 2, 5-36 

RS-232 Prefix Byte, 5-38 

RS-232 Terminator Byte, 5-39 

—S— 

Scan Pattern location, 4-5 

Scanner Components, 4-1 

Scanner Location, 3-4 

Single Line Scanning, 5-44 

Status Indicator, 4-10 

—T— 

Taking Care of Your Scanner, 4-15 

Timers, 5-13 

—U— 

USB Cables, 3-3 

USB Interface Connection, 3-9 

USB Programming, 5-50 

Using the Programming Worksheets, 7-3 

Using Your Scanner, 1-2 

—W— 

Wedge Installation, 3-11 

Wedge Interface Cable, 3-3 

Wedge Options, 5-46 

What is in the Box, 3-1

B005-0000-1182 April 2003 

Printed on recycled paper

NCR RealScan 7892 Bi-Modal Presentation Scanner

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