VXI VT1422A - Manual (Page 371)

VT1422A Command Reference 369 Chapter 7
[SENSe]
[SENSe:]STRain:UNSTrained
[SENSe:]STRain:UNSTrained <unstrained_v>,(@<ch_list>) specifies the
unstrained voltage value to be used to convert strain bridge readings for the channels
specified by <ch_list>. The VT1529A/B can use the MEAS:VOLT:UNSTrained
command which automatically measures the unstrained bridge values and sends each
value to the channels’ EU conversion. This command does not control the output
voltage of any source.
Parameters
Comments •
Use a voltage measurement of the unstrained strain bridge sense channel to
determine the correct value for <unstrained_v>.
•
The <ch_list> parameter must specify the channel used to sense the bridge
voltage, not the channel position on a Bridge Completion SCP.
•
Related Commands: SENSE:STRAIN:UNST?, SENSE:FUNC:STRAIN
…,
MEAS:VOLT:UNSTRained
•
Power-on Condition: Unstrained voltage is zero
•
*RST Condition: unaffected by *RST
•
Send with VXIplug&play Function: hpe1422_cmd(...)
Usage STRAIN:UNST .024,(@100)
set unstrained voltage for channel 0
[SENSe:]STRain:UNSTrained?
[SENSe:]STRain:UNSTrained? (@<channel>) returns the unstrained voltage
value currently used for EU conversion for the sense channel specified by <channel>.
This command does not make a measurement.
Parameters
Comments •
Returned Value: Numeric value of unstrained voltage. The data type is float32.
•
The <channel> parameter must specify a single channel only.
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
unstrained_v numeric (float32) -16 through +16 volts
ch_list channel list (string) 100 - 15731 none
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
channel channel list (string) 100 - 15731 none