VXi VT1422A 사용자 설명서

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VT1422A Command Reference   399
IEEE-488.2 Common Command Reference
IEEE-488.2 Common Command Reference
*CAL? 
*CAL? 
Calibration command. The calibration command causes the Channel 
Calibration function to be performed for every module channel. The Channel 
Calibration function includes calibration of A/D Offset and Gain and Offset for all 
64 channels. This calibration is accomplished using internal calibration references. 
The *CAL? command causes the module to calibrate A/D offset and gain and all 
channel offsets. This may take many minutes to complete. The actual time it will take 
the VT1422A to complete *CAL? depends on the mix of SCPs installed. 
*CAL performs literally hundreds of measurements of the internal calibration sources 
for each channel and must allow seventeen time constants of settling wait each time 
a filtered channel's calibrations source value is changed. The *CAL procedure is 
internally very sophisticated and results in an extremely well calibrated module.
To perform Channel Calibration on multiple VT1422As, use 
CAL:SETup/CAL:SETup?.
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 RSC units.
Returned Value: 
The data type for this returned value is int16.
When Accepted: Not while INITiated
Related Commands: CALibration:SETup, CALibration:SETup?, 
CALibration:STORe ADC
CAL:STOR ADC stores the calibration constants for *CAL? and CAL:SETup 
into non-volatile memory.
Executing this command does not alter the module's programmed state 
(function, range, etc.). It does however clear STAT:QUES:COND? register bit 13.
Send with VXIplug&play Function: hpe1422_cmdInt16_Q(...)
Value
Meaning
Further Action
0
Cal OK
None
-1
Cal Error
Query the Error Queue (SYST:ERR?)