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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 wavelengths and powers.
The CALC3:DATA? query returns the power and frequency of the current
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 4-14 for additional information on selecting
measurements.