TT-3020B Installation Manual - Polaris-as.dk

TT-3020B 

Maritime 

Capsat Transceiver 

for the 

Inmarsat-C Network 

Installation Manual 

© Copyright Thrane & Thrane A/S. May 1995 

Tobaksvejen 23, DK-2860 Soeborg. Denmark 

Version 2.20

Information in this document is subject to change without notice and does not represent 

a commitment on the part of Thrane & Thrane A/S. 

© 1995 Thrane & Thrane A/S. All right reserved. Printed in Denmark. 

Document Number TT-99-102829-220. Release Date: 30MAY95.

Safety Summary 

The following general safety precautions must be observed 

during all phases of operation, service and repair of this 

equipment. Failure to comply with these precautions or with 

specific warnings elsewhere in this manual violates safety 

standards of design, manufacture and intended use of the 

equipment. Thrane & Thrane A/S assumes no liability for the 

customers failure to comply with these requirements. 

GROUND THE EQUIPMENT 

To minimize shock hazard, the equipment chassis and cabinet 

must be connected to an electrical ground. For this purpose 

the equipment is equipped with a power connector including a 

ground terminal. 

DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE 

Do not operate the equipment in the presence of flammable 

gases or fumes. Operation of any electrical equipment in such 

an environment constitutes a definite safety hazard. 

KEEP AWAY FROM LIVE CIRCUITS 

Operating personnel must not remove equipment covers. 

Component replacement and internal adjustment must be 

made by qualified maintenance personnel. Do not replace 

components with the power cable connected. Under certain 

conditions, dangerous voltages may exist even with the power 

cable removed. To avoid injuries, always disconnect power 

and discharge circuits before touching them. 

DO NOT SERVICE OR ADJUST ALONE 

Do not attempt internal service or adjustments unless another 

person, capable of rendering first aid resuscitation, is present. 

DO NOT SUBSTITUTE PARTS OR MODIFY 

EQUIPMENT 

Because of the danger of introducing additional hazards, do not 

substitute parts or perform any unauthorized modification to the 

equipment.

Table of Contents 

1. Introduction 1 

2. Equipment installation 2 

2.1 Introduction 2 

2.1.1 Initial inspection 2 

2.1.2 Packing list 3 

2.1.3 Storage 4 

2.1.4 Repacking for shipment 4 

2.2 Technical specifications 5 

2.3 Power requirements 7 

2.3.1 AC mains operation 7 

2.3.1.1 Integrated Capsat System 7 

2.3.1.2 Power connector 8 

2.3.2 Fuses 9 

2.3.3 Grounding 9 

Thrane & Thrane 




2.4 TT-3001 Antennas 11 

2.4.1 Antenna types 11 

2.4.1.1 TT-3001B Option 001 Maritime Antenna 11 

2.4.2 Mounting bracket 12 

2.4.3 Antenna connector 12 

2.4.4 Antenna cable 12 

2.4.5 Mounting considerations 13 

2.4.5.1 TT-3001B-opt. 001 Maritime Antenna 13 

2.4.6 Safety Distance for Antenna Units 15 

2.5 TT-3020B Capsat Transceiver 16 

2.5.1 Mounting bracket 16 

2.5.2 Communication port 16 

2.5.2.1 Baudrate and protocol settings 16 

2.5.2.2 X4 Connector interface 17 

2.5.2.3 Interfacing to peripherals 17 

2.5.2.3.1 TT-3606A Message Terminal 18 

2.5.2.3.2 IBM Compatible PC (Personal Computer) 18 

2.5.2.3.3 Computerized equipment 18 

2.5.2.3.4 Flow control 19 

2.5.3 T-Bus Connector 19 

2.5.3.1 Changing port X5 to input NMEA 0183 data 20 

2.5.3.2 Changing port X5 to output NMEA 0183 data 20 

2.5.3.3 Changing port X5 to T-Bus communication 20 

2.5.4 Switch settings 21 

2.5.5 Jumper configurations 22 

2.5.5.1 Default configuration 22 

2.5.6 Clock battery back-up 22 

2.5.7 NMEA 0183 Navigational Interface 23 

2.5.7.1 NMEA 0183 Reception 23 

2.5.7.2 NMEA 0183 Transmission 24 

30MAY95 Page i





2.6 TT-3606A Message Terminal (optional) 26 

2.6.1 Communication port 26 

2.6.2 Printer port 26 

2.6.3 VDU Interface 27 

2.6.3.1 TT-3602D SVGA Monitor 27 

2.6.3.2 TT-3680M DC to DC Converter (70Watt) 28 

2.6.4 TT-3601A keyboard 28 

2.7 TT-3680A/B Power Supply (optional) 29 

2.7.1 TT-3680A Power Supply (80 Watt) 29 

2.7.2 TT-3680B Power Supply (200 Watt) 29 

2.8 TT-3608A Hard Copy Printer 30 

2.8.1 Mounting plate 30 

2.9 TT-3042B Remote Alarm 32 

2.10 Built-in GPS (optional) 32 

2.11 General interconnect information 34 

3. System Generation 35 


3.2 Terminal preparation 36 

3.2.1 TT-3606A Message Terminal 36 

3.2.2 IBM Compatible PC 36 

3.2.3 Computerized equipment/handheld terminals 36 

3.3 Entering the System Generation 37 

3.4 The system generation menu 37 

3.4.1 Entering your mobile type and number 38 

3.4.1.1 Fast access to the Mobile Type 38 

3.5 Leaving the system generation 40 

4. Commissioning of the equipment 41 


4.2 The first login (commissioning) 42 

4.3 Overview of a Link Test 42 

4.4 Details of a Link Test 43 

4.5 Commissioned status 44 

4.6 Uncommissioned status 44 

Page ii 30MAY95

1. Introduction 





This manual provides instructions for installing, configuring and testing of a TT-3000 

Integrated Capsat System that includes a model TT-3020B Capsat Transceiver. 

The various Capsat Systems available from Thrane & Thrane are decribed in the manual 

Integrated Capsat Systems. Please consult this manual if your uncertain what kind of 

system you will be installing. 

A wide variety of options and accessories may be linked together with the Capsat 

Transceiver, and the specific installation and configuring of these are to be found in 

their respective Reference Manuals. 

The relevant cabinet drawings and mounting information illustrations are found in the 

back of this manual. 

30MAY95 Page 1





2. Equipment installation 

2.1 Introduction 

This chapter provides specific information enabling you to install the Model TT-3020B 

Capsat Transceiver into your own system, with minimal effort. The default, or factory 

configuration is described, together with procedures for altering this configuration. 

2.1.1 Initial inspection 

WARNING 

To avoid hazardous electrical shock, do not perform electrical 

tests if there is any sign of shipping damage to any portion of 

the front or rear panel or the outer cover. Read the safety 

summary at the front of this manual before installing or 

operating the TT-3020B Transceiver. 

Inspect the shipping carton immediately upon receipt for evidence of mishandling 

during the transit. If the shipping carton is severely damaged or waterstained request 

that the carrier's agent be present when opening the carton. Save the carton packing 

material for future use. 

Contents of the shipment should be as listed in the packing list below. If the contents 

are incomplete, if there is mechanical damage or defect, or if the TT-3020B Capsat 

Transceiver does not work properly, notify your dealer. 

After you unpack the TT-3020B Capsat Transceiver , inspect it thoroughly for hidden 

damage and loose components or fittings. 

� Inspect the cable harness for stress, loose or broken wires, or broken cable tires. 

� Examine all the components for loose or missing hardware. Tighten all loose 

hardware. 

� Remove loose debris from the cabinet interior. 

Page 2 30MAY95

2.1.2 Packing list 

Your Transceiver unit comes in a box with the following parts: 





Part number Item 

s 

Part Name Use 

403022-001 1 TT-3020B Capsat Transceiver 

52-200145-048 12 HCF 1876 screw, pozi, Fitting the angle or distance 

mushroom, 4x8mm 

mountings 

33-200192-120 2 Fuse, 12A mT Spare 

31-200098-009 1 Connector, D 9-pin male Spare 

31-200100-009 1 House, D 9-pin Spare 

31-200472-058 1 Connector, BNC Solder, 

Male 

Spare 

37-101098 1 Battery Cable, 2m, 1.5mm2 Connecting Transceiver to 

Power Supply 

61-100823 1 PC Cable 9-9 Pin, 2m Connecting Transceiver to PC 

or Message Terminal 

37-201237-925 1 PC-Adaptor 9/25 pin Connecting Transceiver to PC 

41-100742 2 Distance, Mounting Fitting Message Terminal to 

Transceiver 

41-100562 2 Angle, Mounting Fiiting Transceiver or 

Message Terminal to desk or 

console 

40-10202-002 1 Diskette, 3½": TT-10202B 

Capsat Program 

For PC 

98-403020-002 1 TT-3000 Capsat System 

Reference Manual including 

the following: 

Integrated Capsat Systems 

Operators Guide 

This manual 

1 Transceiver Test Sheet 

1 Inmarsat-C Commissioning 

Application Form 

30MAY95 Page 3





The Antenna is shipped in a separate box. 

69-102881 1 TT-3001B Antenna Unit 

51-200833-003 1 Unbraco Key, Steel N3 For antenna mounting 

51-200834-006 1 Unbraco Key, Steel N6 For antenna mounting 

1 Self-bonding tape, 30cm For sealing the antenna 

connector 

1 Description for fitting selfbonding 

tape 

403020-941 1 Antenna cable, 5m 

Table 1: Packing list. 

2.1.3 Storage 

The TT-3020B may be stored or shipped in temperatures within the limits -40° C to +80° 

C. It is advisable to protect the TT-3020B from extreme temperature variation which can 

cause excessive condensation. It is recommended that the TT-3020B is unpacked 

immediately on delivery. 

2.1.4 Repacking for shipment 

The shipping carton for the TT-3020B has been carefully designed to protect the 

transceiver and its accessories during shipment. This carton and its associated packing 

material should be used if repacking for shipment. Attach a tag indicating the type of 

service required, a failure description, return address, model number and full serial 

number. Mark the carton FRAGILE to ensure careful handling. 

If the original shipping carton is not available, the following general instructions should 

be used for repacking with commercially available material. 

1. Wrap the TT-3020B in heavy paper or plastic. Attach a tag indicating the type of 

service required, return address, model number and full serial number. 

2. Use a strong shipping container, e.g. a double walled carton of 160 kg test material. 

3. Protect the front- and rear panel with cardboard and insert a 7 cm to 10 cm layer of 

shock absorbing material between all surfaces of the equipment and the sides of the 

container. 

4. Seal the shipping container securely. 

5. Mark the shipping container FRAGILE to ensure careful handling. 

Page 4 30MAY95

2.2 Technical specifications 





Model TT-3020B 

General Specifications Meets or exceeds all INMARSAT 

specifications for the Inmarsat-C 

Network and GMDSS requirements. 

Transmit Frequency 1626.5 to 1646.5 MHz. 

Receive Frequency 1530.0 to 1545.0 MHz. 

Channel Spacing 5 kHz. 

Modulation 1200 symbols/sec BPSK. 

Ambiquity Resolution Unique word. 

Coding R 1/2 K=7 convolutional code, 

(interleaved code symbols RX). 

DataRate 600 bit/sec. 

RX Frame Length 8.64 seconds. 

TX Signalling Access Mode Slotted ALOHA. 

TX Message Channel TDMA & FDMA,interleaved code 

symbol. 

Antenna Interface Standard 50 Ohm female N-connnector, 

max 100 meter cable. 

GPS Interface 50 dB antenna amplification, 50 Ohm 

female SMA-connector output for GPS 

antenna 

Terminal Interface CCITT Rec.V.24/28, 100-9600 Baud IA-5 

code, DB-9F connector. 

Printer Interface Standard parallel Centronics, DB-25F 

connector. 

Navigator and Alarm Interface CCITT Rec. V.10 Special with NMEA- 

0183 interface and multidrop 

addressing, female BNC-connector, 

max.100 meter cable. 

System Setup EEPROM programming from operator 

terminal 

DC Power Source 10.5 to 32 V floating DC 

RX: 9.5 W 

TX: 80 W 

Ambient Temperature -25°C to 55°C operating 

-40°C to 80°C storage. 

Electronic Unit Mounting Flange mounting with optional 19" rack 

bracket. 

Dimensions H x W x D 62mm x 214mm x 279mm. 

Weight 3.2 Kg 

30MAY95 Page 5





Maritime Antenna 

TT-3001B Opt. 001 

Inmarsat-C/GPS omnidirectional 

antenna, RHC polarized. 

G/T: -23 dB/K 

EIRP: 14 dBW ± 2dB at 5° elevation. 

Temperature: -35°C to55°C operating, 

-40°C to 80°C storage. 

Dimensions (H x G): 237 mm x 150 mm 

conical ex. mounting. 

Weight 2.2 Kg. 

Solar Radiation Infra-red radiation 500W/m2 (EME). 

Relative Humidity 95% non-condensing at 40°C. 

Precipitation Up to 50 mm/hour, droplet size 0.5 to 

4.5 mm (EME). 

Ice Up to 25 mm (EME). 

Wind Up to 200 km/hour (maritime antenna). 

Vibration Operational Random 5-20 Hz: 0.02 g 2 /Hz 

20-150 Hz: -3dB/oct. (1.0g RMS). 

Vibration Survival Random 5-20 Hz: 0.05 g 2 /Hz 

20-150 Hz: -3dB/oct. (1.7g RMS). 

Shock Half sine 20g/11ms 

Antenna Mounting (Maritime) Standard 1.5" tube mounting. 

Other Antennas Please refer to dedicated brochures. 

Inmarsat-C Protocol support Message transmission and reception 

with IA-5, ITA-2 and binary transfer 

to/from the following destinations: 

Telex 

PSTN (telephone modems and fax 

modems) 

PSDN (X.25 network) 

EGC message reception with 

automatical geographical area selection 

Polling and datareporting with 

automatic transmission of position 

reports down to 1 per minute. 

Special Access Codes 

Basic X.400 

DNID Messaging 

Program Unreserved Datareporting 

Pre-assigned Datareporting 

GMDSS facilities. 

Transmit message size: Max 32Kbyte 

Receive storage: 128 Kbyte 

Table 2: Technical specifications. 

As our products are under continuous research and development, any information may 

change without prior notice. 

Page 6 30MAY95

2.3 Power requirements 





Depending on your particular TT-3000 System you will need AC supply or a DC supply. 

A TT-3000 Integrated Capsat System operates on either 115 VAC, 220 VAC or floating 

DC in the range from 10.5-32 Volt. The total power consumption varies with the 

particular system in question. 

As a guide-line, please note the power consumption of the following equipment: 

TT-1542B Call Alarm 0.6 W 

TT-3022A Capsat Transceiver incl. antenna 9.5W RX 80W TX 

TT-3602D SVGA Monitor 60 W 

TT-3606A Message Terminal, incl keyboard. 8W 

TT-3608A Printer 33W 

TT-3042B Remote Alarm 2.5W 7W Print 

Option 005 Built-in GPS 2W 

Table 3: Capsat System component power requirements. 

2.3.1 AC mains operation 

As the TT-3020B Capsat Transceiver is designed to work on floating DC ranging from 

10.5 - 32 Volt, an AC/DC converter is needed in case the Transceiver is subject to work 

in AC environments. 

2.3.1.1 Integrated Capsat System 

For a TT-3000 Integrated Capsat System with an IBM compatible PC we recommend the 

TT-3680A Power Supply. 

The TT-3680A Power Supply operates on either 115 VAC or 230 VAC. (internally 

selectable) and supplies 24 VDC/96 Watt as a maximum. 

The TT-3680A will adjust the DC output level (10.5 - 32 Volt) according to the total load. 

The TT-3680A Power Supply may be connected to the emergency batteries offering 

automatic switch-over to DC in case of a mains line drop-out. 

For a TT-3000 Integrated Capsat System with a TT-3608A Message Terminal we 

recommend the TT-3680B Power Supply. 

30MAY95 Page 7





The TT-3680B Power Supply operates on either 115 VAC or 230 VAC. (internally 

selectable) and supplies 24 VDC/200 Watt as a maximum. 

The TT-3680B will adjust the DC output level (10.5 - 32 Volt) according to the total load. 

The TT-3680B Power Supply may be connected to the emergency batteries offering 


2.3.1.2 Power connector 

The battery connector matches the Thrane & Thrane standards for battery connectors. 

Regardless whether the unit is designed to work on floating DC or modified to match 

your DC requirements the pin assignment of the DC/Battery power connector looks like 

this: 

Pin Name Signal Description 

1 SGND Safety Ground 

2 SUP+ Supply Voltage, positive terminal 

3 SUP- Supply Voltage, negative terminal 

4 ON/OFF Remote ON/OFF Switch 

Table 4: TT-3020B Capsat Transceiver DC Power Connector pin assignment 

Pin 4 is a unique feature for the TT-3020B Capsat Transceiver. 

When this pin is left floating the Transceiver is turned off, but if pin 4 is shorted to the 

negative terminal of the battery or DC-supply the Transceiver will switch on. This 

makes it possible for other equipment to perform remote power control of the TT-3020B. 

The remote power control can be triggered by an external relay or solid state switch. 

The battery connection is floating, i.e. there is no galvanic connection from any of the 

battery poles to the cabinet frame. 

Page 8 30MAY95

2.3.2 Fuses 





In case you experience that a fuse needs replacement, please check that the equipment 

has not been exposed to physical damage before fuse replacement takes place. 

WARNING 

To avoid hazardous electrical shock, do not perform electrical 

tests if there is any sign of shipping damage to any portion of 

the front or rear panel or the outer cover. Read the safety 

summary at the front of this manual before installing or 

operating the TT-3020B Transceiver. 

As a guide-line, please note the fuse location of the following equipment: 

Equipment Location Fuse size 

TT-1542B Call Alarm No fuse available. 

TT-3020B Capsat 

Externally accessed, 12A mT. 

Transceiver incl. antenna located on the rear panel. 

TT-3602D SVGA Monitor External accessed, 

located on the rear panel 

3.15A mT. 

TT-3680M DC to DC External accessed, Input 10A mT. 

converter 

located on the front and 

the rear panel 

Output 1A mT. 

TT-3606A Message Externally accessed, 3.15A mT. 

Terminal, incl keyboard. located on the rear panel. 

TT-3608A Printer Internally accessed, 

remove topcover. 

1.5A mT. 

TT-3680A Power Supply Internally accessed, 1A mT. 

(80 Watt) 


TT-3680B Power Supply Internally accessed, 3.15A mT. 

(200 Watt) 


TT-3042B Remote Alarm Externally accessed, 

located on the rear panel. 

1A mT. 

Table 5: Capsat System fuses 

The TT-3680A/B Power Supply may blow an internal fuse in case you power up the 

entire Integrated System with all DC units turned on. It is therefore recommended to 

power up the DC units one by one. 

2.3.3 Grounding 

RF-grounding of an Integrated Capsat System requires special attention. 

30MAY95 Page 9





Each unit shall have its own individual low-inductance earth connection. The use of a 

common busbar for grounding is not recommended as this can lead to unwanted 

common-mode coupling effects. 

The ground should be connected to the cabinets metal frame to provide a return path 

for fault currents due to equipment malfunction or external faults such as lightning faults. 

Interconnecting cables must be well screened. 

Page 10 30MAY95

2.4 TT-3001 Antennas 

2.4.1 Antenna types 

Figure 1: Maritime antenna. 





Your Integrated Capsat System has been delivered with a TT-3001B Option 001 

Maritime Antenna. The antenna is compatible electrically with the earlier TT-3001A 

antenna with or without Option 003 (GPS signal filter). 

2.4.1.1 TT-3001B Option 001 Maritime Antenna 

This is an omni-directional antenna with built-in 

� High Power Amplifier, HPA, TT part no. 60-102195 

� Low Noise Amplifier, LNA, TT part no. 60-101805 

� Combiner, TT part no. 60-102193 

� Diplexer, TT part no. 69-101916 

� Maritime Antenna element, TT part no. 69-102192 

The antenna is very compact and is designed to operate in a corrosive environment and 

in extreme weather conditions without any service. It has a modular construction that 

allows easy exchange of antenna elements. The antenna housing is sealed with tamperresistant 

TORX screws, so that it can only be disassembled by Thrane & Thrane 

approved technicians. 

The antenna is fully compatible with the Inmarsat-C GMDSS specifications, and can also 

receive GPS signals while not transmitting. 

30MAY95 Page 11





2.4.2 Mounting bracket 

The omnidirectional maintenance free antenna unit must be mounted in a high location 

with direct line-of-sight to the satellites. 

Illustration of the 1½" Adaptor for mouting on a pole is enclosed in the back of this 

manual. 

The Adaptor may be removed by loosening the three Allan screws fitting the bracket to 

the antenna. 

2.4.3 Antenna connector 

"N" type connectors are available from manufacturers like: 

Suhner, Radial, Omnispectra, Kings, etc. 

2.4.4 Antenna cable 

Your Integrated Capsat System, has been delivered with a 5m coaxial cable, preterminated 

with a standard connector of "N" type. 

The specifications requires that the total maximal attenuation at 1.65 GHz must be less 

than 16 dB, and the maximal total (short-circuited in one end) DC resistance must not 

exceed 0.8 Ohms. 

In case the antenna cable is to be produced on site, the cable type should match the 

below listed guide-lines: 

Range (m) Cable type no. Connector type no. 

(Suhners) 

1 - 5 RG-223U, 5.5 mm (Cable enclosed) 

6 - 40 RG-214U, 10.8 mm 11N-50-7-44 

41 - 80 SA7272, 10.0 mm 11N-50-7-35 

81 - 100 SA12272, 15.0 mm 11N-50-12-35C 

Table 6: TT-3020B Capsat Transceiver Antenna Cable types 

All antenna cables types are double shielded. 

The antenna cable may run together with radar or navigator cables. Separate cable 

ditch is not required. 

Page 12 30MAY95





If you install your system in a permanent location, we recommend that you, after the 

installation of the antenna, wrap the connector with the enclosed self-bonding tape, 

disabling water from penetrating the connection. 

2.4.5 Mounting considerations 

2.4.5.1 TT-3001B-opt. 001 Maritime Antenna 

When installing the Maritime Antenna you should find a location on the vessel that is as 

free from obstructions as possible. Also you should maintain a certain distance to other 

antennas, especially radar installations. Normally the best place for the antenna would 

be above radar scanning antennas. The following safe distances should be maintained: 

Distance to HF antennas > 5 m 

Distance to VHF antennas > 4 m 

Distance to magnet compass > 3 m 

The antenna is designed to provide satellite coverage even when the vessel has pitch 

and roll movements up to 15°. To maintain this coverage the antenna should be free 

from obstructions in the area down to 15° below the horizon. Since this may not be 

possible in the fore and aft directions of the vessel, the clear area can be reduced to 5° 

below the horizon in the fore and aft directions and 15° below the horizon in the port 

and starboard directions. Any compromise in this recommendation will degrade 

performance. 

Horizon 

15° 

30MAY95 Page 13 

Zenith 

Capsat 

Obstructions should be below these lines 

Horizon 

Figure 2: TT-3001B Option 001 Maritime Antenna mounting. 

15°





If an obstruction such as a pole or a funnel is unavoidable, the following guidelines 

apply: 

The distance to the obstruction should large enough, so that the obstruction only covers 

3 degrees. This means that the safe distance is: 

Example: 

Safe distance = 20 * Diameter of obstruction 

Obstruction is a 4" pole. Diameter = 0.1 m. Safe distance is 20 * 0.1 m = 2 m 

Max. obstruction angle 3 degrees Capsat 

Figure 3: TT-3001B Option 001 Maritime Antenna mounting near pole or funnel. 

Page 14 30MAY95

2.4.6 Safety Distance for Antenna Units 





The safety levels for the Thrane & Thrane INMARSAT-C Antenna Units are based on the 

ANSI standard C95.1-1982 "American National Standard Safety Levels With Respect to 

Human Exposure to Radio Frequency Electromagnetic Fields, 300 kHz to 100 GHz" 

This standard recommends the maximum power density at 1.6 GHz exposed to human 

beings not to exceed 5 mW/cm². 

At the maximum radiated output power from the INMARSAT-C Antenna (16 dBW EIRP) 

this corresponds to a minimum safety distance on 30 cm. 

To be sure that this distance is respected the Thrane & Thrane INMARSAT-C Antenna 

Units are provided with a label declaring a minimum safety distance on 2 feet (61 cm). 

In the future standards from the European Telecommunication Standard Institute (ETSI) 

concerning 1.5/1.6 GHz Satellite Earth Stations the recommendation will be maximum 

8W/m² (0.8 mW/cm²). This tighter recommendations correspond to a minimum safety 

distance on 60 cm at 16 dBW, so these future European recommendations are also 

covered within the declared minimum safety distance on 2 feet (62 cm). 

30MAY95 Page 15





2.5 TT-3020B Capsat Transceiver 

2.5.1 Mounting bracket 

Figure 4: TT-3020B Capsat Transceiver 

The TT-3020B Capsat Transceiver is supplied with an universal mounting bracket (41- 

100562) which allows "over" or "under" mounting to e.g. a table or ceiling. 

It is recommended that the Transceiver is mounted in an open air location allowing the 

operator full access to the front panel in a distress situation. 

When the Transceiver is used with other Thrane & Thrane equipment such as the 

TT-3606A Message Terminal or the TT-3210A Radiotelex Modem, stacked mounting may 

be achieved using mounting bracket 41-100742. 

It is strongly recommended not to stack mount the TT-3020B Capsat Transceiver with 

the TT-3680A Power Supply because of the heat generation from this unit. 

2.5.2 Communication port 

The TT-3020B Capsat Transceiver communicates with a controller device via the 

standard EIA RS-232D ports, located on the rear panel at X4. 

2.5.2.1 Baudrate and protocol settings 

The TT-3020B accepts the following: 

Page 16 30MAY95





Baud rates Protocol settings Handshake 

110 Baud 7/8 databits Hardware 

150 Baud No/Even/Odd parity Using DTR and CTS 

300 Baud 

600 Baud 

1200 Baud 

2400 Baud 

4800 Baud 

9600 Baud 

1/2 stopbits 

Table 7: Automatic baudrate settings. 

The serial port communication parameters are factory programmed to: 

4800 Baud, 8 databits, no parity, 1 stopbit 

Please refer to chapter section 3.3 to alter the baudrate and the protocol settings by 

means of Automatic Baud Rate Recognition. 

Alternatively these settings may be customer defined. 

2.5.2.2 X4 Connector interface 

The TT-3020B uses the the following signals (marked with a � in the Used column): 

Name Signal description 9-Pin Used Levels Direction 

DCD Data Carrier Detect 1 RS-232/423 �� 

RxD Received Data 2 � RS-232/423 �� 

TxD Transmitted Data 3 � RS-232 �� 

DTR Data Terminal Ready 4 � RS-232 �� 

GND Ground 5 � 

DSR Data Set Ready 6 � RS-232/423 �� 

RTS Request To Send 7 RS-232 �� 

CTS Clear To Send 8 � RS-232/423 �� 

RI Ring Indicator 9 � RS-232/423 �� 

Table 8: TT-3020B X4 pin assignment. 

The �� symbol means that the signal is generated by the Transceiver. 

For full operating specifications for the serial interface, you are kindly requested to 

refer to the CCITT Rec. V24, the EIA RS-423C or EIA RS-232D. 

2.5.2.3 Interfacing to peripherals 

The transceiver may be used in numerous configurations for operation with equipment 

like: 

30MAY95 Page 17





� TT-3606A Message Terminal. 

� IBM Compatible PC with a TT-10202A/B Message Terminal emulating software. 

� Computerized equipment. 

� Handheld terminals, etc. 

2.5.2.3.1 TT-3606A Message Terminal 

To Interface the TT-3020B to a TT-3606A Message Terminal, simply use the 30cm 

communication cable enclosed in the delivery (part no TT-61 100921). 

An extended serial communication cable should not exceed 100 meters as the TT-3606A 

works on 4800 Baud using the RS-423 standard. 

2.5.2.3.2 IBM Compatible PC (Personal Computer) 

Interfacing the TT-3020B to a IBM Compatible PC, simply use the communication cable 

enclosed in the delivery: Either 9-9 pin (part no TT-61 100823) or 9-25 pin (part no 

TT-61 101034). 

An extended communication cable should not exceed 8 meters as the TT-10202A 

Message Terminal emulating software works on 4800 Baud using the RS-232C standard. 

As the PC hardware normally does not conform to the RS-423 standard the maximum 

length of the connection cable is less than for the TT-3606A solution. 

As the TT-3020B rely on the CTS and DTR hardware handshake signals it is very 

important that the PC you use is IBM hardware compatible with respect to the serial 

communications interface. 

2.5.2.3.3 Computerized equipment 

Before connecting the TT-3020B to any computerized equipment you are recommended 

to consult the computer installation manual to check the pin assignment of the serial 

communication port. 

Your TT-3020B is configured as Data Communications Equipment (DCE). 

Most computers are configured as Data Terminal Equipment (DTE). 

If this is the case for the particular computer, you will probably be able to provide the 

necessary connections with a multi-wire cable, as shown in the tables below: 

Page 18 30MAY95

9 Pin Connector 

Transceiver Computer 

2 2 

3 3 

4 4 

5 5 

6 6 

8 8 

9 9 

25 Pin Connector 

Transceiver Computer 

2 3 

3 2 

4 20 

5 7 

6 6 

8 5 

9 22 

Figure 5: TT-3020B connection to computer 





Signal Name 

30MAY95 Page 19 

RxD 

TxD 

DTR 

Ground 

If your computer is configured as DCE you will have to cross the wires running from pin 

2 and pin 3 of your TT-3020B to the computer. Pin 5 from the TT-3020B will still connect 

as shown. 

2.5.2.3.4 Flow control 

DSR 

The TT-3020B optionally uses either hardware or software flow control. 

2.5.2.3.4.1 Hardware flow control 

Hardware flow control is accomplished by using the DTR and CTS signals. 

2.5.2.3.4.2 Software flow control 

Software flow control is accomplished by connecting the DTR and CTS, allowing both 

TT-3020B and the peripheral to control data flow by means XON XOFF. 

ENQ/ACK cannot be used. 

2.5.3 T-Bus Connector 

The T-Bus port X5 on the back panel of the TT-3020B Transceiver can be used for either 

� Thrane & Thrane T-Bus communication 

when connecting to the TT-3042B Remote Alarm or other T-Bus devices 

� The International NMEA 0183 communication standard input and output when 

connecting to a commercial available navigator device or using the built-in GPS is 

installed and in navigation mode. 

The factory default is T-Bus communication. 

CTS 

RI





The T-BUS connector, a standard BNC-type, is located on the rear panel of the 

transceiver and is marked X5. The inner conductor carries the data signals and the 

outer is the shield. 

2.5.3.1 Changing port X5 to input NMEA 0183 data 

If the TT-3020B will be used with a navigator using the NMEA standard, you must follow 

the below instructions to ensure proper operation: 

1. Turn off the TT-3020B . 

2. Place the TT-3020B upside-down, remove all 9 screws so that the bottom cover 

can be removed. 

3. Locate the switch array in the corner of the TT-3020B CPU board, and set switch 1 

and 3 in the OFF position. This selects NMEA input operation. Please refer to 

figure 7 on page 21. 

2.5.3.2 Changing port X5 to output NMEA 0183 data 

If the TT-3020B will be used with an external device using the NMEA standard, you must 

follow the below instructions to ensure proper operation: 

1. Turn off the TT-3020B . 




in the OFF position and switch 3 in the ON position. This selects NMEA output 

operation. Please refer to figure 7 on page 21. 

2.5.3.3 Changing port X5 to T-Bus communication 

If the TT-3020B will be used with a TT-3042B Remote Alarm using the T-Bus standard, 

you must follow the below instructions to ensure proper operation: 

1. Turn off the TT-3020B. 




in the ON position. This selects T-Bus operation. Please refer to figure 7 on page 

21. 

Page 20 30MAY95

2.5.4 Switch settings 





For location of the DIP (Dual-in-line) Switch Array see the following figure. 

Figure 6: The DIP switches. Please refer to figure 7 on page 21. 

Speaker 

U6 EEPROM 

U12 EPROM 

DIP Switches 

Power 

Printer T-Bus Console 

CPU 

Alarm 

Button 

GPS Module 

Set 

Button 

Power 

Button 

SW.1 T-Bus Mode 

SW.2 RPU Mode 

SW.3 NMEA 0183 Output 

SW.6 Service Mode 

DS.1 T-Bus Activity: Flickers 

DS.2 Frame Decode: Toggles every 16s 

DS.3 CPU Activity: Flickers 

DS.4 TX data 

TP.2 128 Hz Clock Adjustment 

U18 Viterbi EPROM 

Figure 7: TT-3020B CPU Board, No. TT 37-102819, 

showing the DIP Switch array. 

Most of the DIP switches inside the TT-3020B Capsat Transceiver are reserved for future 

use. 

30MAY95 Page 21





2.5.5 Jumper configurations 

Much of the flexibility of your TT-3020B Capsat Transceiver is due to the extensive use 

of operator programmable configuration parameters, enabling the user to adjust the 

TT-3020B to his specific application needs. 

Most of the configuration parameters are contained in a single integrated circuit, a nonvolatile 

EEPROM. 

However, some parameters must be programmed by means of hardware jumpers or 

straps on the main CPU board. 

These jumper settings may easily be altered from their factory configuration to match 

your particular application. 

2.5.5.1 Default configuration 

The figure below summarize the jumper configurations and their use. 

Jumper Default Function 

W3 

Enable 12V or 5V supply to external GPS antenna. 

Pos 1-2 

12V 

Pos 2-3 

5V 

Table 9: List of jumpers. You must not insert a jumper in any of the listed positions if you 

use an built-in GPS (option 005).. 

Warning: 

Do not attempt to change jumper settings unless you have thorough 

understanding of their meaning. 

2.5.6 Clock battery back-up 

The clock in the transceiver is permanently backed-up by an internal non-chargeable 3 

Volt lithium battery. The service life of this battery exceeds 5 years. 

If you turn off the TT-3020B Capsat Transceiver for a prolonged period this could drain 

your battery. If your status screen indicates "Error in CMOS clock" in the first line, you 

may need to change the battery. 

If the battery wears out it must be replaced by qualified service personnel. 

Please remember to logout of the Inmarsat-C system if you turn off the TT-3020B Capsat 

Transceiver for a prolonged period. 

Page 22 30MAY95

2.5.7 NMEA 0183 Navigational Interface 





The following Navigators will provide suitable NMEA 0183 strings to the Capsat 

Transceiver. 

AP Navigator Professional APN5 GPS 

AP Navigator MK6 

Raytheon Raystar 920 

Furuno GP500 GPS 



Navstar XR4 GPS 

Digital Northstar 800 Loran 

Micrologic Explorer GPS 

Trimble Navtrac XL 

Shipmate RS 5300 GPS 

Shipmate RS 4000 CC Decca 

Sperry 501 TR/GPS SatNav + Øverland interface unit UPL 2000 

Koden KGP 900 GPS 

Koden KGP 930 GPS 

Koden LR 771 Loran C 

2.5.7.1 NMEA 0183 Reception 

The NMEA 0183 Standard uses the ASCII alphabet to send strings with navigational data. 

This data can be read by the Transceiver via the T-Bus interface. 

The following is a list of the NMEA codes that the Transceiver will recognize. 

If the NMEA 0183 GLL string received by the Transceiver has an empty field the position 

information will not be updated at all. 

GLL 

VTG 

VHW 

HDT 

HSC 

Geographic position, latitude and longitude 

If the NMEA 0183 GLL string received by the Transceiver has an empty field the 

position information will not be updated. 

Heading (track) and speed information 

Heading and speed information 

Heading information 

Heading information 

30MAY95 Page 23





2.5.7.2 NMEA 0183 Transmission 

When you have a built-in GPS it is possible configure the Transceiver to send out NMEA 

0183 navigational data so that devices connected to the Transceiver via the T-Bus 

connector will benefit from the GPS information. 

To use NMEA output you must set: 

SWITCH 1 OFF and SWITCH 3 ON 

The following four strings: 

VTG 

GLL 

GGA 

ZDA 

Heading and speed information 

Geographic position, latitude and longitude 

Global Positioning System fix data (includes time of position) 

Time and date 

are sent out when the Transceiver has a built-in GPS and it is in navigation mode. The 

time in the position strings and the Time-and-date string are always the same. 

The spacing between each block of data is 2 seconds and 0.5 seconds between GLL, 

GGA and ZDA strings when they are present. 

An example is: 

$GPVTG,000.,T,000.,M,00.0,N,00.0,K 

$GPGLL,5544.44,N,01228.64,E,121003,A 

$GPGGA,121003,5544.44,N,01228.64,E,1,04,1,37,M,,M,, 

$GPZDA,121003,19,02,1993,, 

The following three strings: VTG, GLL and GGA are sent out when the Transceiver has a 

built-in GPS but it is in aquisition mode and the currently stored position is less than 24 

hours old. The time indicates that of the last known position. The course and speed are 

8 second mean values. 


$GPVTG,180.,T,180.,M,01.0,N,00.0,K 

$GPGLL,5544.45,N,01228.67,E,121059, 

$GPGGA,121059,5544.45,N,01228.67,E,0,00,1,23,M,,M,, 

The following three strings: VTG, GLL and GGA are sent out when the Transceiver has a 

built-in GPS but it is in aquisition mode and the currently stored position is more than 24 

hours old. The time field is empty. The course and speed are 8 second mean values. 


Page 24 30MAY95

$GPVTG,139.,T,139.,M,02.0,N,00.0,K 

$GPGLL,5544.45,N,01228.68,E,, 

$GPGGA,,5544.45,N,01228.68,E,0,00,1,0,M,,M,, 





An empty GLL string is sent out when there is no built-in GPS or before the GPS module 

has been started by the Transceiver. 

$GPGLL,,,,,, 

$GPGLL,,,,,, 

$GPGLL,,,,,, 

30MAY95 Page 25





2.6 TT-3606A Message Terminal (optional) 

Please be advised that a special Reference Manual for the TT-3606A Message Terminal 

is available. 

2.6.1 Communication port 

The TT-3606A Message Terminal communicates with The TT-3020B Capsat Transceiver 

via one of the two standard RS-423 ports, located on the rear panel. 

The communication parameters are factory programmed to: 

COM1, speed 4800 Baud, 8 databits, no parity, 1 stopbit 

Alternatively these settings may be customer defined. 

The CTS and DTR hardware handshake signals are used as default. 

The pin assignment for the two communication ports are identical. 

Name Signal description 9-Pin 25- 

Page 26 30MAY95 

Pin 

Used Level Output 

Signal 

DCD Data Carrier Detect 1 8 RS-232/423 

RxD Received Data 2 3 � RS-232/423 

TxD Transmitted Data 3 2 � RS-232 � 

DTR Data Terminal Ready 4 20 � RS-232 � 

GND Ground 5 7 � 

DSR Data Set Ready 6 6 � RS-232/423 

RTS Request To Send 7 4 RS-232 � 

CTS Clear To Send 8 5 � RS-232/423 

RI Ring Indicator 9 22 � RS-232/423 

2.6.2 Printer port 

Table 10: TT-3606A COM1/COM2 pin assignment (X4/X3). 

The TT-3608A Hard Copy Printer may optionally be connected to the TT-3606A Message 

Terminal. 

Please note: note The printer must be connected to the Transceiver in case the installation 

needs to be GMDSS approved. 

The printer port connector is located on the rear panel.





This parallel interface conforms to the standard Centronics interface used e.g. on IBM 

compatible PC's. 

The enclosed standard cable allows the printer to be located up to 1.5 meters from the 

TT-3020B (or TT-3606A). 

A special low-impedance cable is available for printer locations up to 20 meters from 

TT-3020B (or TT-3606A) 

Thrane & Thrane recommends that you always install the printer so that it is connected 

to the Transceivers printer port. 

2.6.3 VDU Interface 

Please be aware that your TT-3606A Message Terminal is delivered with a Video 

Monitor Adapter offering connection to colour Video Monitors. 

The adapter offers both analog and TTL video signals. 

The video signals are available on X6 (TTL) and X7 (analog). 

Regardless of the type of Video Monitor supplied with your Integrated Capsat System, it 

plugs into the Analog Video port, X7. 

2.6.3.1 TT-3602D SVGA Monitor 

The TT-3602D SVGA Monitor is connected to the Analog Video port, X7 on the TT-3606A 

Message Terminal. 

Figure 8: TT-3602D SVGA Video Monitor 

Power: 

The TT-3602D SVGA Monitor can be supplied from either 180-280 Vac or by the 

TT-3680M DC to DC Converter. 

Grounding: 

The TT-3602D SVGA does normally not require any separate grounding. 

30MAY95 Page 27





2.6.3.2 TT-3680M DC to DC Converter (70Watt) 

TT-3680M is a small DC to DC converter, operating in a wide input voltage range from 

10 to 32 Volts DC, generating a mains level DC output of 305 Volts, and capable of 

powering 70 Watts. The TT-3680M is designed for use with mains equipment where the 

input is first rectified to produce a 305 Volts DC rail and then converted by a switch 

mode technique. 

Due to the heat TT-3680M develops during operation it is recommended that this unit is 

mounted separately. 

A separate installation manual for TT-3680M is available. 

2.6.4 TT-3601A keyboard 

Figure 9: TT-3680M DC to DC Converter 

The TT-3601A Keyboard plugs into the X5 connector. You can use any Personal 

Computer AT standard keyboard, but please be aware that if you choose a national 

keyboard, that you may not be able to enter or transmit all of your national characters. 

Power: 

The keyboard is powered from TT-3606A Message Terminal. 

Grounding: 

TT-3601A Keyboard does normally not require any separate grounding. 

Page 28 30MAY95





2.7 TT-3680A/B Power Supply (optional) 

The TT-3680A/B Power Supply operates on either 115 VAC or 230 Vac. (internally 

selectable). 

The TT-3680A/B Power Supply may be connected to the emergency batteries offering 


2.7.1 TT-3680A Power Supply (80 Watt) 

The TT-3680A Power Supply supplies 24 Vdc/80 Watt as a maximum. 

Due to the heat TT-3680A develops during operation it is recommended that this unit is 

mounted separately using the enclosed mounting bracket. 

A separate installation manual for TT-3680A, is available. 

Figure 10: 80W power supply. 

2.7.2 TT-3680B Power Supply (200 Watt) 

The TT-3680B Power Supply supplies 20 Vdc/200 Watt as a maximum. 

Due to the heat TT-3680B develops during operation it is recommended that this unit is 

mounted separately. 

A separate installation manual for TT-3680B, is available. 

Figure 11: 200W power supply. 

30MAY95 Page 29





2.8 TT-3608A Hard Copy Printer 

2.8.1 Mounting plate 

The TT-3608A Hard Copy Printer is supplied with a mounting frame, offering 

horizontally oriented secured mounting. 

Figure 12: Printer. 

The TT-3608A Hard Copy Printer should normally be connected to the TT-3020B Capsat 

Transceiver, but the Integrated Capsat System is designed to allow the operator to 

guide incoming messages to the TT-3608A Hard Copy Printer and/or to the TT-3606A 

Message Terminal for Microfloppy Disk Hard Copy. 

Connecting the TT-3608A to the Transceiver offers the highest security of hard copy of 

incoming messages even if the TT-3606A (or PC) is turned off. 

In case both TT-3608A and TT-3606A are turned off, the Transceiver will hold the 

incoming message in the internal memory for at least 48 hours for later Hard Copy. 

The enclosed standard cable allows the printer to be located up to 1.5 meters from the 

Transceiver. 

The printer connector is located on the rear panel. The interface conforms to a standard 

Centronics type interface found on most personal computers today. 

Page 30 30MAY95

Pin Name Signal Description Printer Input 

1 STRB Strobe � 

2 DAT0 Data Bit 0 � 








10 ACKN Acknowledge 

11 BUSY Printer Busy 

12 PE Paper End (out of paper) 

13 SEL Printer Selected 

14 ALFD Auto Line Feed � 

15 ERR Printer Error 

16 INIT Initialize Printer � 

17 SLCT Select Printer � 

18 GND Ground 

19 GND Ground 

20 GND Ground 

21 GND Ground 

22 GND Ground 

23 GND Ground 

24 GND Ground 

25 GND Ground 





Table 11: Printer port (X3) pin assignment. All signals use TTL voltage levels. 

30MAY95 Page 31





2.9 TT-3042B Remote Alarm 

The TT-3042B Remote Alarm is connected to the TT-3020B by means of the Transceivers 

X5 T-Bus connector. Please refer to section 2.5.3. 

Figure 13: Remote Alarm with printer. 

The TT-3042B Remote Alarm is intended for GMDSS installations. 

The TT-3042B can all the same be used to print out SafetyNet EGC messages, via the 

built-in thermal printer and indicate reception of EGC messages in general. 

The TT-3020B Transceiver can accomodate up to 8 Remote Alarms at the same time, but 

each alarm must have it's own unique T-Bus address in the range 0-7. 

If more than one TT-3042B Remote Alarm is connected, the printer of the Remote Alarm 

with the lowest address (first in the list of Remote Alarms seen with the ru -l command) 

will be used as the default printer, whereas the other printers will be back-up printers 

in case the first printer runs out of paper or has a malfunction. 

If you do not connect a printer at the Transceiver, it will use the Remote Alarm printer 

instead, but it is also possible to configure the Transceiver to use the Remote Alarm 

printer always even if a Transceiver printer is available. Further you can select different 

types of messages to go to either (or both) of the two printer types. 

The Remote Alarm address is selected with a DIP Switch array inside Paper Bay of the 

TT-3042B. Please refer to the TT-3042B Remote Alarm Reference Manual for detailed 

information. The address selected for a Remote Alarm must not conflict with any other 

Remote Alarm connected to the same TT-3020B Capsat Transceiver. 

If you enter the Capsat Program's Terminal mode and type the command ru -l you will 

see a list of the currently attached remote units and their addresses. In this way you will 

be able to select unique addresses for all devices to be connected. 

2.10 Built-in GPS (optional) 

GPS means Global Positioning System. 

Page 32 30MAY95





The GPS module is installed from the factory and you need not perform any installtion to 

use it. 

If you have ordered your Capsat Transceiver without a built-in GPS and you later need 

to install a GPS module, then you should contact your dealer to obtain the Technical 

Reference Manual for instuctions on how to accomplish this. 

30MAY95 Page 33





2.11 General interconnect information 

Below is an example of the TT-3000C Capsat System for maritime use. 

You can find the other Integrated Capsat System available from Thrane & Thrane in the 

Integrated Capsat Systems manual. 

An Integrated Capsat System is delivered with all necessary interconnecting cables. 

TT-3001B 

Opt.001 

Antenna 

TT-3000C Capsat System Cabling 

37-101128, 2m 

AC 


Remote Alarm 


Power Supply 

403020-941, 5m X1 

X2 

37-101436, 0.2m X5 

37-101128, 2m 

37-103480, 3m 


Transceiver 

37-102282, 0.25m 

X2 X3 88-360400-002, 2m 

TT-3608A 

Printer 


Message Term. 

Option 002 

61-100921, 0.25m 


Keyboard 

TT-3602D 

SVGA Monitor 

Page 34 30MAY95 

X1 

X4 

X4 

TT-3680M 

DC to DC Conv. 

Figure 14: Interconnection diagram for integrated TT-3000C System. 

Cable diagrams are enclosed in the back of this manual, in case extension cables needs 

to be prepared. 

For applications where cables will be handmade by the dealer or the customer it is 

important to note that the cable screen should be soldered to the connector frame to 

prevent static electric shocks. 

A complete set of connectors are delivered together with an Integrated Capsat System. 

Extra connector kits may be purchased separately. 

X1 

X5 

X7 

X2





3. System Generation 


The System Generation is a special mode that the TT-3020B Capsat Transceiver can 

enter when powered ON. This mode allows you to change the general operation of the 

equipment before you start using it for communications. 

The TT-3020B Capsat Transceiver has an enhanced level of System Parameter security. 

The Transceiver will normally access and change System Parameters that are stored in 

the non-volatile memory of the EEPROM chip, without any user intervention. 

In the case that some of the special System Parameters needs to be changed, you will 

have to permit the Transceiver to store these in the Protected part of the EEPROM. This 

part of the EEPROM memory can only changed if you press the Set button on the 

frontpanel of the Transceiver. 

This allows you to completely control when this information should be updated. 

The information stored in the protected part of the EEPROM is: 

The Thrane & Thrane serial number. 

The main Network Coordinating Station Table. 

The Mobile Type (Landmobile or Maritime). 

The X4 connector serial communications settings. 

For now you should only enter your Mobile Number and your Mobile Type. 

The Mobile Type of your Transciver is Maritime, and this may already have been 

entered for you by the person that installed your system. 

In this case you only need to enter your Mobile Number. 

30MAY95 Page 35





3.2 Terminal preparation 

Alteration of the TT-3020B Capsat Transceiver parameters may be accomplished by 

means of: 

� TT-3606A Message Terminal. 

� IBM compatible PC running DOS version 2.00 or later, with a communication 

software or the 

Message Terminal emulating software TT-10202A/B. 

� Computerized equipment. 

� Handheld terminals, etc. 

Please follow the below listed guide lines to set up the connected equipment in a direct 

terminal emulating manner. 

3.2.1 TT-3606A Message Terminal 

Enter the terminal emulation mode by selecting: 

OPTIONS - CONFIGURATION - TERMINAL 

3.2.2 IBM Compatible PC 

Enter the terminal emulation mode in the TT-10202A/B software by selecting: 

OPTIONS - CONFIGURATION - TERMINAL 

3.2.3 Computerized equipment/handheld terminals 

Your computer/terminal should display the ASCII characters as they appear being send 

from the TT-3020B Capsat Transceiver. 

No alphabet or protocol conversion should take place. 

Page 36 30MAY95

3.3 Entering the System Generation 

The procedure is as follows: 





1. Turn on your Transceiver while you press the Set button. You must hold down the 

button for at least 10 seconds or at least until you can hear the connected printer 

being initialized. 

2. Now hit the ENTER key and watch the TT-3020B System Generation menu appear 

on your screen. If this does not happen, repeat steps 1 and 2. 

3.4 The system generation menu 

Having followed the instructions in the previous section you should now see the menu 

on your screen: 

Thrane & Thrane system generation menu: Capsat Transceiver 

0 Quit 

1 Init system parameters 

2 EGC settings 

3 Filerouting 

4 Reporting service 

5 NCS Table 

6 Preferred ocean 

7 Console settings 

8 Mobile Number 

Enter number > 

To perform an action on the list you just type in the appropriate number. If you want to 

see the menu again just type CTRL+C (Hold the CTRL key down while typing a C). 

The CTRL+C combination also acts as a Cancel facility. It will always bring you back to 

the menu without changing any parameters. 

Note: 

Do not hit the ESC key if you use the Thrane & Thrane Message Handling 

Program. If you hit the ESC key you will go back to the menu of the Message 

Handling Program and an error will occur as the Transceiver will not repond to 

the normal commands while in the System Generation. 

If you do hit ESC, then turn off both units and proceed as in section 3.3 on page 

37. 

30MAY95 Page 37





3.4.1 Entering your mobile type and number 

For ease of operation and general information when you operate your Capsat system, 

you should consider to enter the mobile number. 

Just type in the Inmarsat-C 9 digit number that you have received from your PTT 

authorities. 

An Inmarsat-C mobile number is always in the range: 

400000000 to 499999999 

If you type a number outside this range the Transceiver will ignore it. 

You should not attempt to use your equipment before you have received a mobile 

number, because the Mobile Number means that you have been registred in the 

database for the Inmarsat-C Network. 

The Transceiver only uses the mobile number when sending Message Position Reports 

(see the Message Handling Software Operators Guide), to indicate which Transceiver 

originated the position message. 

3.4.1.1 Fast access to the Mobile Type 

You can get an easy first time installation, as the Transceiver will automatically 

recognize if the mobile number has never been entered before, and automatically bring 

you to the Change Mobile Type menu. 

In this situation the Mobile Number will display as 

Mobile number : (unknown) 

You can only change the Mobile Type the first time you enter the System Generation 

and the status of the Mobile Type reads (unknown). If you see a Mobile Number here, 

then you may skip this step as it has been performed by your dealer. 

The procedure of changing the Transceiver to Maritime is shown below: 

Page 38 30MAY95

Mobile number : (unknown) 

Mobile type : Illegal 

Select Mobile Type: 

0 Illegal 

1 Landmobile 

2 Maritime 

Enter number > 2 

Please use the Set function on the Capsat Transceiver 

OK 





Note that this can only be done once, as you cannot set the Mobile Number back to the 

unknown state. If you need to change the Mobile Type in this case, you need to contact 

your dealer. 

30MAY95 Page 39





3.5 Leaving the system generation 

The following procedure will bring the Transceiver back to it's normal mode of 

operation. 

1. Select menu entry 0 (zero) Quit, to leave the System Generation. The TT-3020B 

will ask you to use the Set function and hit the ENTER key. 

2. The TT-3020B Capsat Transceiver will perform a self test and start its program 

showing you the software version and the stand-by prompt " : ". 

3. If you use a Thrane & Thrane Message Handling Software you may now hit the ESC 

key to get back to the window menu. 

Page 40 30MAY95





4. Commissioning of the 

equipment 


Before the TT-3020B Capsat Transceiver is allowed to participate in the Inmarsat-C 

System, a commissioning procedure is required. 

The commissioning procedure is just a the very first Link Test (or Performance 

Verification Test in Inmarsat terminology) that the Transceiver performs. 

The Link Test automatically verifies that the TT-3020B Capsat Transceiver is capable of 

both receiving and transmitting information according to Inmarsat-C specifications. No 

other tests are required. 

The Inmarsat Mobile Number is needed to run the Link Test. 

When a new unit is being installed, it is the responsibility of the service technician to 

verify that the unit is functioning properly, and that the unit is commissioned and logged 

into the Inmarsat-C System, at the end of installation. 

When you power on the Transceiver for the very first time, it will automatically perform 

a login. When the Inmarsat-C System sees this login, it will start a Link Test (or 

commissioning procedure) after a short period of time. 

Keep your equipment turned on and wait until the Link Test is finished before using the 

equipment for communications. 

You should not attempt to start a Link Test yourself as you have only three 

commissioning attempts, and these will be used up if you are not cautious. 

30MAY95 Page 41





4.2 The first login (commissioning) 

The first login attempt from the unit (which is automatically performed by the 

Transceiver) will be recognized by the Network Coordinating Station (NCS) and served 

normally, (downloading a Land Earth Station (LES) network table into the Transceiver) 

and inform the Network Database the new unit is present and being commissioned. 

After the NCS has logged the unit into the Inmarsat-C Network, it instructs an 

predefined LES to start a Link Test with the unit. The LES ID is stored in Inmarsat's 

database of mobile units. 

When the Link Test is done, the TT-3020B Capsat Transceiver is logged in and 

commissioned. 

4.3 Overview of a Link Test 

The Link Test consist of three parts: 

� Message Reception Test 

� Message Transmission Test and 

� Distress Test. 

The TT-3020B will ask you to perform a manual Distress Test but if you ignore the 

request the Transceiver will automatically send the Distress Test after 2 minutes. 

In the end of the test the Transceiver will receive the link test results. 

Page 42 30MAY95

4.4 Details of a Link Test 





As the first login performed by the Transceiver will cause the Commissioning (Link 

Test) to take place. You should not try to start the link test yourself or try to send any 

messages. If you do so, the NCS may find that your Transceiver does not respond to the 

commissioning announcement, and will consequently change the status of your unit to 

Barred, and you will no longer be permitted to use the system. 

After a while you will see a message on your screen and on your printer saying: 

Link Test started 

and when the MAIL indicator on the TT-3020B frontpanel starts flashing, the receive test 

has commenced. 

A test message is then received from the LES by the Transceiver. 

After the MAIL indicator has turned OFF, the transmission test begins. 

The SEND indicator starts flashing and after a while it will light continuously (the data is 

being transmitted) and then starts flashing again. 

The SEND indicator will turn OFF when the protocol has finished. 

The Transceiver will request you to perform a distress test. If you ignore this request 

the Transceiver will automatically send the Distress Test for you after 2 minutes, and the 

ALARM indicator on the frontpanel will start blinking. When the distress has been 

acknowledged by the LES the indicator will be on permanently. 

If your Transceiver has been configured as Maritime, you will be prompted to send a 

distress and you must do so before the message disappears from the screen of the 

Message Handling Program (if you do not use a Thrane & Thrane Message Handling 

Program, you must send the distress alert within 2 minutes after you receive the 

prompt). If you send a Distress yourself you will see the message "Distress issued and 

put in queue". You can ignore this. 

The printer will give an acknowledgement that the distress has been sent. 

After a successful distress transmission the printer will report this 

The Transceiver now will wait for the test results to arrive from the LES, and 

acknowledge the reception of these by a short transmission (burst). 

When receiving the results the screen will display: 

- Link Test finished 

and the results will be printed out. 

The results of the test can also be viewed with: 

- OPTION - LINK TEST 

30MAY95 Page 43





To reset the red ALARM indicator, press the ALARM button only on the Transceiver 

frontpanel for 5 seconds. 

4.5 Commissioned status 

When the commisioning procedure has been completed, the Transceiver will store this 

status in it's non-volatile EEPROM memory. 

A special feature of the Transceiver is that when it is commissioned it will check its 

current login status when powered on. 

If it is logged out, it will automatically issue a login to the last used NCS TDM. 

4.6 Uncommissioned status 

Though your TT-3020B Transceiver is not commissioned, it is fully capable of receiving 

messages. 

You are not denied permission to transmit messages by means of the TT-3020B Capsat 

Transceiver when your equipment is uncommissioned, but the LES will not forward your 

messages to their destinations, and a non-delivery notification is returned to you. You 

may also see the message "Your Transceiver is not commissioned" on the printer or 

screen. 

Any distress alerts will not be barred or rejected by the system. 

Page 44 30MAY95

Index 

—A— 

AC mains operation, 7 

antenna connector, 12 

attenuation, 12 

—B— 

BNC-type connector, 20 

—C— 

Clock battery back-up, 22 

commissioning, 41 

—D— 

DC resistance, 12 

DC to DC converter, TT-3680M, 28 

DIP switch array, 21 

DTR and CTS signals, 19 

—E— 

EGC back-up printer, 32 

ETSI, 15 

fuses, 9 

—F— 

—H— 

hardware handshake signals, 18 

—J— 

jumper configurations, 22 

keyboard, 28 

—K— 

—M— 

making a serial cable, 18 

mobile number, 38 

mounting bracket, 16 





—N— 

navigator, 20 

NMEA 0183 communication, 19 

—O— 

omnidirectional antenna unit, 12 

—P— 

power connector, 8 

power requirements, 7 

printer port, 31 

Protected EEPROM, 35 

—R— 

radar or navigator cables, 12 

remote power control, 8 

RF grounding, 10 

RS-423 ports, 26 

—S— 

safety distance, 15 

SafetyNet EGC messages, 32 

self-bonding tape, 12 

serial communication cable length, 

18 

serial port communication, 17 

shipping carton, 2 

storage temperature, 4 

SVGA, 27 

System Generation, 35 

system generation menu, 37 

—T— 

T Bus communication, 19 

TT 3022A COM port, 17 

TT 3042B Remote Alarm, 32 

TT 3606A COM port, 26 

TT-3601A Keyboard, 28 

TT-3602D SVGA Monitor, 27 

TT-3606A Message Terminal, 26 

TT-3608A Hard Copy Printer, 30 

TT-3680M DC to DC converter, 28 

TTL video signal, 27 

30MAY95 Page 45

TT-3020B Installation Manual - Polaris-as.dk

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