EXFO IQS-12004B DWDM Passive Component Test System for IQS-500 - Manual (Page 90)

Calibrating the DWDM Passive Component Test System
78 IQS-12004B
Calibrating the System
Wavelength Response Calibration
The wavelength response calibration is a full-range sweep with a launch
jumper connected in sequence to each of the external power meters. It is a
series of measurements starting with the first channel of the first power
meter and ending at the last channel of the last power meter. This series of
measurements allows the system software to correct any variations in
sensitivity and response of the different power meters.
The calibration data is saved to a file and is associated with the module
serial numbers. If a new module is added to the system, it will be
automatically detected and you will be forced to perform a new
calibration.
A wavelength response calibration must be done in the following cases:
³
Power meter(s) is replaced.
³
Power meters are added to the system.
³
The Source or WRM or PSA is replaced.
³
A PSA is added to the system.