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VT1422A Command Reference 269Chapter 7
CALibration
• Related Commands: SYST:ERR?, CAL:SETup, *CAL?
• Send with VXIplug&play Function: hpe1422_cmdInt16_Q(...)
Usage See CAL:SETup.
CALibration:STORe
CALibration:STORe <type> stores the VT1422A’s most recently measured
calibration constants into Flash Memory (Electrically Erasable Programmable Read
Only Memory). When <type>=ADC, the module stores its A/D calibration constants
as well as constants generated from *CAL?/CAL:SETup into Flash Memory.
When <type>=TARE, the module stores the most recently measured CAL:TARE
channel offsets into Flash Memory.
Note The VT1422A's Flash Memory has a finite lifetime of approximately 10,000 write
cycles (unlimited read cycles). While executing CAL:STOR once every day would
not exceed the lifetime of the Flash Memory for approximately 27 years, an
application that stored constants many times each day would unnecessarily shorten
the Flash Memory's lifetime. See Comments below.
Parameters
Comments • The Flash Memory Protect jumper (JM2201) must be set to the enable position
before executing this command (See “Disabling Flash Memory Access
(Optional)” on page 29).
• Channel offsets are compensated by the CAL:TARE command even when not
stored in the Flash Memory. There is no need to use the CAL:STORE TARE
command for channels which are re-calibrated frequently.
• When Accepted: Not while INITiated
• Related Commands: CAL:VAL:RES, CAL:VAL:VOLT
• *RST Condition: Stored calibration constants are unchanged
• Send with VXIplug&play Function: hpe1422_cmd(...)
Usage CAL:STORE ADC
Store cal constants in non-volatile
memory after A/D calibration
CAL:STORE TARE
Store channel offsets in non-volatile
memory after channel tare
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
type discrete (string) ADC | TARE none