DEWE-50-USB2-8_broch.. - Dewetron America

Automotive 

Energy & power Analysis 

Aerospace & Defense 

Transportation 

General Test & Measurement 

DEWE-50-USB2-8 

Modular USB data acquisition system for isolated signal conditioners 

When connected to the high speed USB 2.0 interface of 

any computer the DEWE-50-USB2-8 becomes a powerful 

measurement instrument for analog, digital, counter 

and CAn-bus data capture. Simply connect a webcam 

to your computer and add video information to your 

recorded data. 

Eight simultaneous analog inputs sample data at up 

to 204.8 kS/s and in combination with DAQp-series 

isolated signal conditioners almost any sensor can be 

connected. 

popular measurands are: 

voltage Strain 

Current Acceleration 

Force Torque 

pressure Sound 

position RpM 

Frequency velocity 

Resistance And more 

The included DEWESoft application software adds 

powerful measurement and analysis capability, turning 

the DEWE-50-USB2-8 into a dedicated recorder, scope, 

data logger or FFT analyzer. 

The isolated signal conditioners make this unit almost 

indestructible and a safe investment for many years. 

Key Features 

Connects to any computer via USB interface 

8 slots for isolated DAQp-series signal 

conditioners 

24 bit resolution, 204.8 kS/s per channel 

Simultaneous sampling, separate ADC per channel 

2 counters or 6 digital inputs 

2 high speed CAn interfaces 

EpAD2 expansion for slow signals 

DEWESoft instrument software included 

The DEWE-50-USB2-8 is the perfect fit for 

Mobile applications 

e.g. mobile shock and vibration tests 

Field service 

e.g. bringing into service tasks 

Maintenance 

e.g. order tracking 

in-vehicle tests 

e.g. trouble shooting, OBDii data recording 

industrial applications 

e.g. balancing 

www.dewetron.com 

AUTOMOTivE 

pORTABLE inSTRUMEnTS DEWE-50-USB2-8 

1


2 

Connectivity 

USB and SYnC interfaces 

The USB connection to a host computer is secured with 

a unique mini-USB connector which actually screws into 

the backside of the DEWE-50-USB2-8, locking it in place, 

and guarding against accidental disconnection. 

For channel expansion up to 16 analog inputs a second 

DEWE-50-USB2-8 can directly be attached to the unit, 

USB and SYnC interfaces are prepared. 

EpAD 

Analog input 

There are eight slots for DAQp series isolated signal 

conditioners. The internal A/D system offers eight analog 

inputs, each has its own sigma-delta A/D converter and is 

sampled at up to 204.8 kS/s at 24 bit resolution. Anti-aliasing 

filters are included for each channel. 

DEWETROn offers a wide range of DAQp modules, see pages 

6 and 7 for an overview. 

To enable signal conditioning for additional slow signals an EpAD interface is prepared. DEWETROn EpAD2 series 

modules to acquire quasi-static thermocouple, RTD, voltage or current signals can be connected to this interface by 

a single cable. The sampling rate of an EpAD2 input channel is approx. 10 Hz / amount of modules. 

CAn 

There are two high speed CAn interfaces which are able to acquire data from vehicle CAn – or vehicle OBDii 

interface – as well as from any sensor outputting CAn data. 

Additionally DEWETROn CpAD2 modules can be connected to a CAn interface. These modules have the same 

features as EpAD2 but the sampling rate does not depend on the amount of attached modules, so it can be 10 Hz 

in any case. 

Option 50-8-OUT-5 

Optional eight BnC sockets can be installed to provide access to the conditioned ±5 v signal of each DAQp 

module. 

www.dewetron.com

Counter input features 

DEWETROn has advanced the state-of-the-art in 

counter/encoder inputs in our data acquisition 

systems. 

The key advancement is that our counters 

are pHASE SYnCHROniZED. Referring to the 

diagram, you can see that a standard counter 

is always a sample behind. With software 

interpolation you can get closer, but only with 

DEWETROn’s advanced time shifting technology 

are both the phase and amplitude fully 

corrected! 

RPM-Measurement 

Length-measurement 

Event Counting 

Waveform Timing 

Encoder 

Tacho 

Gearthooth, CDM 

ADC-clock 

Counter input 

ideal counting 

ORION-counter 

Software interpolation 

Standard counter 

Gearthooth, TRG, CDM and TRG 

Gearthooth with missing teeth 

Gearthooth with double teeth 

Linear encoder 

Linear pulse sensor 

Basic counting 

Gated counting 

Up/down counting 

period frequency 

Two pulse edge separation 

period, pulse width, 

frequency, duty cycle 

PORTaBLE INSTRUMENTS • DEWE-50-USB2-8 


3


4 

DEWESoft 

Our award-winning data acquisition package is second to none when it comes to both pure recording power and 

ease of use. normally it is a difficult balancing act to provide lots of capability and performance, without making the 

user interface cumbersome and hard to learn. But with careful and innovative design, we have done exactly that! 

DEWESoft is the solution to acquire signals synchronous from different sources, display and store them together 

and perform quick analyses. 

File browser in analyze mode 

Typical DEWESoft report 

Typical DEWESoft online display 

Key Features 

perfect sync of analog, digital, counter, CAn, GpS, 

video, ARinC, 1553 data … and even more 

Fast and easy setup of all kinds of input channels 

Failsafe and simple sensor setup by TEDS or 

sensor database 

powerful online data processing, MATH functions, 

filters, statistics, reference curves 

Attractive online display of all kind of data, 

creation of displays is a matter of seconds 

various storing strategies, stream data to hard 

disk (up to 100 MB/s), triggered storing or 

database storing 

Analog, digital or CAn data output, powerful 

function generator, alarms, CAn messages 

Build test procedures in a form of workflow 

diagram by means of our sequencer 

Fast data analysis, reload GB files in seconds 

post processing, a data file can be postprocessed 

on any computer 

Ready to us applications, power calculations, 

Combustion analysis, Torsional vibration, Order 

tracking, Sound analysis, Frequency response 

function, Human vibrations, Balancing ... and even 

more 

www.dewetron.com

SPECIFICaTIONS DEWE-50-USB2-8 

aNaLOG INPUT 

number of channels 8 (simultaneously sampled) 

Measured values According installed DAQp modules 

INTERNaL a/D SySTEM 

Resolution 24 bit 

Type of ADC Sigma-Delta 

Sampling rate 204.8 kS/s 

-3 dB bandwidth 76 kHz @ 204.8 kS/s 

(consider possible limit of DAQp module) 

Accuracy ±0.1 % of range, ±0.5 mv 

DyNaMIC CHaRaCTERISTICS 

Signal to noise @ fs


6 

Selection guide 

DAQ series modules 

Single channel 

High bandwidth - for dynamic signals 

isolation (most models) 

Analog signal output (±5 v) 

Single channel modularity 

Module Input type Ranges TEDS 

Universal measurement 

Bandwidth (BW), 

Filters (LP = lowpass, 

HP = highpass) 

Isolation (ISO), 

Overvoltage 

protection (OP) 

DAQP-STG Strain gauge, bridge sensors ±0.1 to ±1000 mV/V (@ 5 VDCexc) ■ BW: 300 kHz ISO: 350 VDC 

Piezoresistive bridge ±0.5 to 10000 mV/mA (@ 1 mAexc) LP: 10 Hz to 300 kHz OP: ±50 VDC 

Voltage 

Resistance 

±500 µV to ±10 V 

25 mΩ to 100 kΩ 

Pt100, Pt200, Pt500, Pt1000, 

Pt2000 

-200° C to 850° C 

IEPE ® V 

via MSI-BR-ACC 

±2.5 to ±10000 mV 

MSI MSI MSI 

Thermocouple via MSI-BR-TH-x full range of TC type 

Charge via MSI-BR-CH-50 up to 50000 pC 

Voltage via MSI-BR-V-200 up to ±200 V 

High voltage measurement 

DAQP-HV High voltage ±20 to ±1400 V - BW: 300 kHz ISO: 1.8 kVRMS 

LP: 10 Hz to 300 kHz 

V 

DAQP-HV-S3 High voltage ±20 to ±1400 V - BW: 700 kHz ISO: 1.8 kVRMS 


V 

DAQP-DMM High voltage ±10 to ±1000 V - BW: 20/30 kHz ISO: 1.5 kVRMS 


V 

Voltage & current measurement 

DAQP-LV Voltage ±10 mV to ±50 V ■ BW: 300 kHz ISO: up to 1 kVRMS 

Current with external shunt 20 mA / 5 A LP: 10 Hz to 300 kHz OP: 350 VDC 

IEPE ® via MSI-V-ACC 

±10 mV to 10 V 

V 

MSI MSI 

Pt100, Pt200, Pt500, Pt1000, -200° C to 1000° C and 

Pt2000 and resistance via 0 to 6.5 kOhm 

MSI-V-RTD 

Charge via MSI-V-CH-50 up to 50000 pC 

DAQP-V Voltage 10 mV to 50 V - BW: 50 kHz ISO: up to 1 kVRMS 

Current with external shunt 20 mA / 5 A LP: 10 Hz to 50 kHz OP: ±500 VDC 

V 

DAQN-AIN Voltage ±10 V (1:1 input) - - OP: < ±500 V 

(jumper 

selectable) 

V 

Current measurement 

MSI 

DAQP-LA-SC Current 0.1 A to 30 A peak - BW: 300 kHz ISO: 1.4 kVRMS 

Note: 5 ARMS continuous max. 5 ARMS contin. current LP: 10 Hz to 300 kHz 

DAQP-LA-B Current 2 mA to 600 mA - BW: 300 kHz ISO: 1.4 kVRMS 

Note: typ. 20 mA application LP: 10 Hz to 300 kHz 


■ = standard

Module Input type Ranges TEDS 

Bridge / strain gauge and carrier frequency amplifier 

OUT 

Bandwidth (BW), 

Filters (LP = lowpass, 

HP = highpass) 

Isolation (ISO), 

Overvoltage 

protection (OP) 

DAQP-CFB AC bridge, strain gauge Bridge: 0.1 to 1000 mV/V - BW: DC to 2.3 kHz OP: ±10 VDC 

Note : 5 kHz sine wave excitation LP: 10 Hz to 1 kHz 

Inductive sensors, LVDT Inductive: 5 to 1000 mV/V 

DAQP-BRIDGE-A Strain gauge, bridge sensors ±1 to ±50 mV/V (@ 5 VDC) - BW: 20 kHz ISO: 350 VDC 

LP: 10 Hz to 20 kHz OP: ±10 VDC 

Potentiometric sensors 200 Ω to 10 kΩ 

DAQP-BRIDGE-B Strain gauge, bridge sensors ±0.1 to ±100 mV/V (@ 5 VDC) ■ 1) BW: 200 kHz OP: ±10 VDC 


Charge / IEPE ® measurement 

Potentiometric sensors 200 Ω to 10 kΩ 

DAQP-ACC-A IEPE ® sensors ±50 mV to ±5 V - BW: 0.5 Hz to 300 kHz - 

LP: 1 to 300 kHz 

HP: 0.5 Hz and 5 Hz 

DAQP-CHARGE-A Charge sensors Charge: 5 to 50000 pC - BW: 0.1 Hz to 50 kHz - 

IEPE ® sensors IEPE ® : ±5 mV to 5 V LP: 100 Hz to 50 kHz 

Note: selectable integration and 

double integration 

HP: 0.1 Hz to 10 Hz 

DAQP-CHARGE-B Charge sensors ±100 to ±1 000 000 pC - BW: DC to 100 kHz ISO: 350 VDC 

Temperature measurement 


Note: selectable time constant HP: DC, 0.001 Hz to 0.5 Hz 

for static sensors 

DAQN-THERM-x Thermocouple K and J type (others on request) - BW: 4 Hz ISO: 1 kVRMS 

DAQN-THERM-1 K: -30 to 170 °C 

Note: internal CJC DAQN-THERM-2 K: -30 to 370 °C 

DAQN-THERM-3 K: 0 to 1000 °C 

DAQN-THERM-4 K: -100 to 1350 °C 

DAQN-THERM-5 J: -100 to 760 °C 

DAQN-RTD-x Thermoresistors Pt100 - BW: 10 Hz - 

DAQN-RTD-1: -30 to 170 °C 

DAQN-RTD-2: -100 to 200 °C 

DAQN-RTD-3: -50 to 600 °C 

Frequency measurement 

DAQP-FREQ-A Frequency 100 Hz to 200 kHz - BW: according to range 

Output response: 

1.5 ms 

30 ms 

500 ms 

ISO: 350 VDC 

Voltage output module 

DAQN-V-OUT Voltage output 1:1 output module with isolation - BW: 400 Hz ISO: 240 VDC 

Input voltage: ±10 V 

Output voltage: ±10 V 

1) TEDS support for DAQP-BRIDGE-B revision 2 only ■ = standard 

ADAp-D9M-BnCF: 

DSUB to BnC adapter 

for DAQp-v series and 

DAQp-FREQ modules 

BnC to Microdot adapter 

(included as a standard with 

DAQp-CHARGE-A modules) 

COnn-DSUB-9: 

Screw terminal adapter 

for all modules with 9-pin 

DSUB connector 

BnC to banana and 

banana to BnC adaptors 

isolated high-voltage amplifier: 

DAQp-Hv 

PORTaBLE INSTRUMENTS • DEWE-50-USB2-8 


7


8 

applications 

Recorder 

Synchronous recording of different signals 

voltage Acceleration 

pressure Force 

Temperature Sound 

position RpM 

Torque Frequency 

velocity And more 

Torsional and Rotational vibration 

Time domain measurement 

Angle based view 

Additional to all other functions (analog, CAn, GpS, video, ...) 

Configurable display 

Direct sensor connection 

80 MHz time base 

High resolution ±0.03rpm ±2 mdeg@12000 rpm 

The shown applications are only a few examples, many more can be covered using 

the DEWE-50-USB2-8 instrument. 

DEWETRON Ges.m.b.H. • Parkring 4 • A-8074 Graz-Grambach 

Tel (0043) 316 3070 0 • Fax (0043) 316 3070 90 • sales@dewetron.com 

Order Tracking 

Dedicated re-sampling method for sharp order separation 

Measurement in time domain to keep all benefits 

2D, 3D waterfall in order or frequency domain 

Amplitude, phase extraction 

Recalculation in post processing 

phase synchronous RpM input with 12.5 ns resolution 

EASY TO SETUp 

Balancing 

User interface which guides through all steps 

Order tracking based balancing method 

Single or dual plane 

Multiple balancing for two directions saves time 

2D graph for plane view 

RpM channel with color indicator (RpM range) 

Alarm output if velocity exceeds predefined value 

Displays tacho probe time signal to set trigger 

vector polar plots of 1st order of all runs 

(initial, trail, ...) 

Weight splitting 

Acceleration, velocity, displacement in recorder 

Time domain measurement 


DE-D100301E • All trademarks are acknowledged to be the property of their owners. Specification subject to change without notice. © DEWETRON Ges.m.b.H. 04/2010

DEWE-50-USB2-8_broch.. - Dewetron America

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