EXFO IQS-12004B DWDM Passive Component Test System for IQS-500 - Manual (Page 182)

Automating or Remotely Controlling the System
170 IQS-12004B
Nulling Electrical Offsets
Nulling Electrical Offsets
To obtain the best possible results, it is recommended to perform a nulling
of the power meters and wavelength reference module. During this
operation, no light should reach the detectors. For more information, see
Nulling Electrical Offsets on page 124 and Nulling Electrical Offsets on
page 75.
The COM method associated with this step is Nulling (see page 287).
The SCPI command associated with this step is CALibrationNULLing (see
page 245).
Optimizing the Power
This step is required to ensure that we have the maximum dynamic range
when the IQS-5150 module is present. If this step is not performed, power
may not come out of the IQS-5150 module and, therefore, the system will
not be able to calibrate properly and provide any valid measurements.
The COM method associated with this step is OptimizePower
(see page 288).
The SCPI command associated with this step is
PolarizationStateAdjuster:MAXimum (see page 263).