EXFO IQS-12004B DWDM Passive Component Test System for IQS-500 - Manual (Page 359)

COM Objects Reference
DWDM Passive Component Test System 347
Analysis Interface—Methods
Analysis Interface—Methods
Analysis AddRefExtTrace
Description This method lets you add a trace that will be used in the
calculation of an offset that can be applied to acquired traces
for periodic testing.
Syntax object.AddRefExtTrace (Trace)
Parameters Trace: Required. A Variant value containing a two-dimensional
array representing pairs of X,Y coordinates of the trace to set.
Response None
Note This method allows you to add a trace to define an offset that
can be applied to acquired traces during periodic test. This
trace should be the acquisition result of an external reference
patchcord used as a reference device. There should be as many
traces as there are external reference patchcords connected to
the setup.
This offset may be used to compensate intrinsic deviation of the
system, mainly caused by the repeatability of the switch.
Use this method in conjunction with the following methods:
AddRefExtZeroTrace, GetDriftTrace, GetCorrectedIlTrace.