EXFO FVA-3150 Variable Attenuator - Manual (Page 90)

Remote Control Commands
84 FVA-3150
Specific commands-Quick Reference Command Tree
CAL
Description This command stores an offset value that will be applied to all
wavelengths in Absolute, Reference, and Offset modes. This
offset value will be included in the measurement returned by
ATT? but will not be taken into account on the FVA-3150 display.
This offset value is deleted when the FVA-3150 is turned off.
Syntax CAL<wsp><value>[<wsp><DB>]
Parameters The <value> parameter must be a valid attenuation value in
the format “±99.999”. The units (DB) are optional.
Example CAL 99.999 DB
CAL?
Description This query returns the offset value that is applied to all
wavelengths in Absolute, Reference, and Offset modes.
Syntax CAL?
Response The offset value that is applied to all wavelengths in Absolute,
Reference, and Offset modes in the format “±99.999”. The units
are dB.
Note This offset value is included in the measurement returned by
ATT? but is not taken into account on the FVA-3150 display.
Example CAL?