EXFO FVA-3150 Variable Attenuator - Manual (Page 88)

Remote Control Commands
82 FVA-3150
Specific commands-Quick Reference Command Tree
Parameters The parameter can be

“MIN” (to set the FVA-3150 to the minimum setting for the
current wavelength)

“MAX” (to set the FVA-3150 to the maximum setting for the
current wavelength)

a valid attenuation value followed by the units [DB]. Note
that, depending on the current measurement mode, the
parameter takes different values.
In Absolute mode:
In Reference mode:
In Offset mode:
Therefore, when in Reference or Offset mode, the range of
the accepted values for the parameter will change
according to the current reference or offset value.
Example ATT –15.350 DB
Note This command cannot be issued while a program is running.
The ATT command is equivalent to the INP:ATT command.
Both give the same result.
value actual attenuation =
value actual attenuation reference value (INP:OFFS?) – =
value actual attenuation wavelength-specific offset + =