System Commands
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MISCELLANEOUS
*CAL.’?
Query
DESCRIPTION
QUERY SYNTAX
Response Format
The *CAL? query performs a complete internal calibration. This
calibration sequence is the same as that which occurs at power-up.
At the end of the calibration, the response indicates how the cali-
bration terminated. When the calibration is finished, the
instrument returns to the state it was in prior to the query.
Hardware failures are identified by a unique binary code in the
returned <status> number (see Table 1 ). A "0" response indicates
that no failures occurred.
Note: This query is only accepted in remote mode.
*CAL?
*CAL <diagnostics>
<diagnostics> := 0 calibration successful
BIT
BIT VALUE
DESCRIPTION
0
1 CH1 failure
1
2
CH2 failure
2
4 CH3 failure¢
3
8 CH4 failure¢
4
16 TDC failure
5
32
Trigger circuit failure
Failures
Table 1
EXAMPLE (GPIB)
The following instruction forces a self-calibration.
CMD$="*CAL?": CALL IBWRT(SCOPE%,CMD$)
CALL IBRD(SCOPE%,RD$): PRINT RD$
Response message (if no failure)
*CAL 0
RELATED COMMANDS AUTO_CALIBRATE
:1: 4-channel oscilloscopes only, reserved In the 2-channel oscilloscopes
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