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TECHNICAL REFERENCE MANUAL 

DS-16xLVDTr 

 

5.1. Sync input to LVDT-EXC transfer function 

 

 
Table of Transfer Coefficients:

 

Parameter 

Output @4kHz (Vrms)  Output @4.8kHz (Vrms)  Output @10kHz (Vrms) 

Transfer-K 

1.76 

1.76 

1.7 

 

Sensor LVDT-EXC Output equation: 

V DT

XC

 

Output

 (

V rms

)

T ransfer

 

Sync

 

Input

 (

V rms

)  

L

E

=  

K

*  

 

 
 

 

Influence on Noise floor  
Noise floor may differ with Sync Input Voltage level. Adjust  if required. 

 
 
 
 

 
 
 
 
 
 

 

 

 

V1.0 

13 / 27 

Summary of Contents for DS-16xLVDTr

Page 1: ...DS 16xLVDTr TECHNICAL REFERENCE MANUAL V1 0 1...

Page 2: ...Pinout 15 6 2 Typical Full Bridge sensor connection 16 6 3 Typical Half Bridge sensor connection 17 7 Adapter outputs 19 7 1 Pinout 20 7 2 Typical connection to DEWESoft ampli er w DSUB 9 connector 2...

Page 3: ...nformation about a subject Please read carefully Hint Gives you a hint or provides additional information about a subject Example Gives you an example to a speci c subject Safety symbols in the manual...

Page 4: ...16xLVDTr technical reference manual 1 2 2 DEWESoft tutorials The DEWESoft tutorials document provides basics and additional information and examples for working with DEWESoft and certain parts of the...

Page 5: ...S 16xLVDTr 2 System Overview DS 16xLVDTr Combines 16 channels of LVDT signal conditioners in a 19 rack housing with 1U height LVDT Strain Stress Full Bridge Half Bridge DSI Compatible TEDS Compatible...

Page 6: ...l provided from external function generator to a BNC front connector IN connector When using multiple DS LVDTr devices the EXC signal can be daisy chained from the BNC OUT connector to the BNC IN conn...

Page 7: ...CR 55ppm K of Full Scale Sensor supported type Full Bridge Half Bridge LVDT impedance min 120R SYNC Input Voltage 500mVrms typical recommended 1700mVrms max recommended Sensor Exc voltage 3Vrms max 15...

Page 8: ...TECHNICAL REFERENCE MANUAL DS 16xLVDTr 3 2 Output bandwidth Magnitude and Phase response Typical magnitude response for 4kHz EXC Typical phase response for 4kHz EXC V1 0 8 27...

Page 9: ...TECHNICAL REFERENCE MANUAL DS 16xLVDTr Typical magnitude response for 10kHz EXC Typical phase response for 10kHz EXC V1 0 9 27...

Page 10: ...ts of this new circuit are minimal adjustments are required temperature stability is improved and transducer interchangeability is improved Functional block diagram of a single shannel of DS 16xLVDTr...

Page 11: ...sor Two examples are shown for sensor with sensitivity 0 5 Output signal level is of the Exc Signal Sensor output phase lag is 45 LVDT adapter output is 0 35 1Vexc sensitivity 0 70 When phase compensa...

Page 12: ...ut connectors 2 x BNC Parallel Not isolated Coupling AC High pass 3dB 16Hz 1st order Input impedance 1MR Overvoltage Protection ESD 36V Bidirectional TVS Overcurrent Protection 2 4mA typical Resettabl...

Page 13: ...ansfer Coef cients Parameter Output 4kHz Vrms Output 4 8kHz Vrms Output 10kHz Vrms Transfer K 1 76 1 76 1 7 Sensor LVDT EXC Output equation V DT XC Output V rms Transfer Sync Input V rms L E K In uenc...

Page 14: ...VDTr 6 Sensor inputs LVDT sensor inputs are located on the back side Parameter Description Comment Connectors 16 x DSUB 9 female Not isolated Sensor Probe type Half Bridge Full Bridge Optional Interna...

Page 15: ...or supply excitation 2 Sensor Output 3 Sense 4 Ground 5 Not Connected 6 Sense 7 Sensor Output 1 8 Sensor supply excitation 9 Reserved Important Optional internal HB completion Do not connect Sensor Ou...

Page 16: ...CHNICAL REFERENCE MANUAL DS 16xLVDTr 6 2 Typical Full Bridge sensor connection Note 6 wire connection only shown 4 wire also possible connect Sns and Exc signals on adapter side of connector V1 0 16 2...

Page 17: ...idge completion Important Input pin7 shall be connected to half bridge completion resistor divider assembled with discrete resistors with the following recommended speci cations Resistance 1k Toleranc...

Page 18: ...TECHNICAL REFERENCE MANUAL DS 16xLVDTr External Half Bridge completion DSUB9 solder side view Example Example sensor pinout V1 0 18 27...

Page 19: ...outputs DS 16LVDTr adapter outputs are located on the front side Channels Phase adjustment positions on front side Parameter Description Comment Connectors 16 x DSUB 9 male Not isolated Phase adjustme...

Page 20: ...CHNICAL REFERENCE MANUAL DS 16xLVDTr 7 1 Pinout Pin Assignment DSUB9 male 1 Power supply 2 Output 3 Power supply sns 4 Ground 5 Not Connected 6 Power supply sns 7 Ground 8 Power supply 9 TEDS V1 0 20...

Page 21: ...EFERENCE MANUAL DS 16xLVDTr 7 2 Typical connection to DEWESoft ampli er w DSUB 9 connector Use shielded DSUB9 male to DSUB9 female extension cable Pin Assignment DSUB9 female Pin Assignment DSUB9 male...

Page 22: ...ndling Observe the following guidelines when recycling a Dewesoft system System and Components Recycling Production of these components required the extraction and use of natural resources The substan...

Page 23: ...shocks Before connecting the system please read the corresponding speci cations in the product manual carefully The inputs must not unless otherwise noted CATx identi cation be connected to the mains...

Page 24: ...ronmental conditions Avoid operation in the immediate vicinity of high magnetic or electromagnetic elds transmitting antennas or high frequency generators for exact values please refer to the enclosed...

Page 25: ...https dewesoft com support distributers 9 2 Calibration Every instrument needs to be calibrated at regular intervals We recommend annual calibration Before your Dewesoft data acquisition system is del...

Page 26: ...red trademarks are acknowledged to be the property of their owners 9 8 Trademarks We take pride in our products and we take care that all key products and technologies are registered as trademarks all...

Page 27: ...TECHNICAL REFERENCE MANUAL DS 16xLVDTr 9 9 Documentation version Doc Version Date dd mm yyyy Notes 1 0 0 06 12 2019 Initial version V1 0 27 27...

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