VXI VT1422A - Manual (Page 267)

VT1422A Command Reference 265 Chapter 7
CALibration
Command
Sequence
CAL:CONF:VOLTAGE .0625, ZERO
connect voltage reference to Calibration
Bus
*OPC? or SYST:ERR?
must wait for CAL:CONF:VOLT to
complete
(now measure voltage with external DMM)
CAL:VAL:VOLT <measured value>
Send measured value to module
repeat above sequence for full-scale
repeat zero and full-scale for remaining ranges (0.25, 1, 4, 16)
CAL:STORE ADC
Store cal constants in non-volatile
memory (used only at end of complete
cal sequence)
CALibration:REMote?
CALibration:REMote? (@<ch_list>) calibrates one or more entire Remote Signal
Conditioning Units like the VT1529A/B. Only a single channel per RSCU unit need
be specified in <ch_list> and all channels on that RSC Unit will be calibrated.
<ch_list> can contain multiple channels that specify multiple RSC Units.
CAL:REM? returns a value when all RSC Units specified in <ch_list> have been
calibrated (see comments below).
Note that the scope of the *CAL? and CAL:SETup commands is limited to the
VT1422A and the SCPs it contains. They do not calibrate Remote Signal
Conditioning Units like the VT1529A/B. CAL:REMote must be used in addition to
*CAL?/CAL:SETup for RSCUs.
Parameters
Comments •
Individual channels in <ch_list> must be for RSCUs, although channel ranges
may span non-RSCU channels. If <ch_list> specifies a channel not connected
through a VT1539A SCP, a 3007 "Invalid signal conditioning plug-on" error is
generated.
•
Returned Value:
The data type for this returned value is int16.
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
ch_list channel list (string) 10000 - 15731 none
Value Meaning Further Action
0 Cal OK None
1 Error during
remote calibration
Error information in FIFO buffer.
See failure codes below.
-1 Couldn’t start
remote calibration
Query the Error Queue (SYST:ERR?)
See error messages starting on page 453.