Checking The Measurement Conditions; Checking The Stability Of The Setup; Repeating The Pdl Measurement - Agilent Technologies HP E5574A User Manual

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Taking Polarization Dependent Measurements
Measuring Polarization Dependent Loss

Checking the Measurement Conditions

1 If not already done, check the general instrument settings by
pressing P .
RESET
For highest resolution, the "Number of Digits" should read
0.1234 and "Low PDL" should be set. The "Mode" will affect
the measuring method (see section 1.6 "Getting Started" on
page 31). Press P
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2 Check the "Head" parameter on the display. If it does not show
the head to which you connected the DUT, press
H B respectively.
EAD
Before you record the first PDL value on your test protocol, it is
important to check the stability of your setup.

Checking the Stability of the Setup

1 Press M .
ORE
2 Press S .
TABILITY
3 Check the stability value. Refer to page 31 in section 1.6
"Getting Started" for information on the stability value.
4 Press P to return to the previous page and read the PDL.
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Repeating the PDL Measurement

If the display is not updated continuously, because you are in
average mode, you must restart the PDL measurement manually.
1 Press R .
ESTART
43
to return to PDL.
H A or
EAD