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Programming Commands
CALCulate3 Subsystem
DRIFt[:STATe]
Turns on and off the drift measurement calculation.
Syntax
:CALCulate3:DRIFt[:STATe]{?| {ON | OFF | 1 | 0}}
Attribute
Summary
Preset State: off
*RST State: off
SCPI Compliance: instrument specific
Description When the drift mode is first turned on, the current list of laser lines is
placed into the reference. All subsequent measurements take the new
data, subtract the reference data, and display the differences in wave-
lengths and powers.
The CALC3:DATA? query returns the power and frequency of the cur-
rent measurement minus the power and frequency of the reference.
Note
Only one STATe command can be turned on at any one time. Attempting to turn
more than one state on at a time results in a “–221 Settings Conflict” error. Refer
to “Measure delta, drift, and signal-to-noise” on page 3-14 for additional informa-
tion on selecting measurements.