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264 VT1422A Command Reference Chapter 7
CALibration
Comments • Related Commands: CAL:VAL:RES, CAL:STOR ADC
• When Accepted: Not while INITiated
• Send with VXIplug&play Function: hpe1422_cmd(...)
Command
Sequence
CAL:CONF:RES
connect reference resistor to Calibration
Bus
*OPC? or SYST:ERR?
must wait for CAL:CONF:RES to
complete
(now measure ref resistor with external DMM)
CAL:VAL:RES <measured value>
Send measured value to module
CAL:STORE ADC
Store cal constants in non-volatile
memory (used only at end of complete
cal sequence)
CALibration:CONFigure:VOLTage
CALibration:CONFigure:VOLTage <range>,<zero_fs> connects the on-board
voltage reference to the Calibration Bus. A measurement of the source voltage can
be made with an external multimeter connected to the H Cal and L Cal terminals on
the Terminal Module or the VH, VL, Ω H, and Ω L terminals on the Cal Bus
connector when not using a terminal module. The <range> parameter controls the
voltage level available when the <zero_fs> parameter is set to FSCale (full scale).
Parameters
Comments • The <range> parameter must be within ±5% of one of the five following values:
0.0625 V dc, 0.25 V dc, 1 V dc, 4 V dc, 16 V dc. This parameter may be
specified in millivolts (mv).
• The expected FSCALE output voltage of the calibration source will be
approximately 90% of the nominal value for each range, except the 16 V range
where the output is 10 V.
• When Accepted: Not while INITiated
• Related Commands: CAL:VAL:VOLT, STOR ADC
• Send with VXIplug&play Function: hpe1422_cmd(...)
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
range numeric (float32) see comments volts
zero_fs discrete (string) ZERO | FSCale none