EXFO IQS-12004B DWDM Passive Component Test System for IQS-500 - Manual (Page 185)

Automating or Remotely Controlling the System
DWDM Passive Component Test System 173
Referencing the System
Referencing the System
³
If you are working with the standard DWDM Passive Component Test
System, each time the system is turned on, a reference measurement
has to be performed.
This reference measurement takes into account any power fluctuation
that occurred since the system was last used (e.g., connection and
reconnection of rigid and semi-rigid patch cords, power optimization).
³
If you are working with the multipath option, you do not have to
perform a reference measurement each time the system is turned on.
The reference measurement takes into account any power fluctuation
that occurred since certain operations were performed on the system
(e.g., connection and reconnection of rigid and semi-rigid patch cords,
power optimization).
Note: To obtain good results, EXFO recommends that you to regularly perform
reference measurements. EXFO also recommends to perform a reference
measurement when the test system is used non-stop during a long period
of time or when there are important variations in environmental
conditions.
For more information on referencing of the standard IQS-12004B DWDM
Passive Component Test System, see Performing Reference Measurements
on page 82.