EXFO IQS-12004B DWDM Passive Component Test System for IQS-500 - Manual (Page 62)

Setting Up the DWDM Passive Component Test System
50 IQS-12004B
Preparing the Test Setup
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The scan resolution (in pm): This parameter determines the
approximate scan resolution. The application will set the appropriate
source sweep speed and power meter sampling rate.
The application allows you to indicate the test selection:
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PDL: calculations, based on the Mueller Matrix four-state method, take
into account the optical retardation of the polarization state adjuster
(IQS-5150).
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Simplified PDL: faster than standard PDL (calculations do not take into
account the optical retardation of the polarization state adjuster), but
adds an uncertainty of about 5 % of the DUT PDL.
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ORL.
You can specify the IL analysis parameters, the PDL analysis parameters
and whether the system must perform a continuous scan or not.
The DWDM Passive Component Test System performs PDL measurements
as function of wavelength. It can also keep intermediate traces for export
purposes.
The result table will be adjusted according to the options specified in the
PDL Analysis group box.
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In addition to standard IL results (DUT IL average values), you may
need to get IL results obtained at the four states of polarization.
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You may also need to get traces from the PDW analysis. The PDW
analysis is made using proprietary algorithms (patent pending) and is
based on calculations using the Mueller Matrix coefficients. Using data
from the four scans performed for the PDL measurement, the DWDM
Passive Component Test System analysis software internally calculates
the transmission response for many states of polarization and
generates the insertion loss curves for the extreme values.
Note: The test setup step is only available when you have already created a test.