Agilent Technologies HP E5574A User Manual page 211

Optical loss analyzer
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Appendix D. Performance Test
Test VI. Repeatability PDL/PDG
3 Zero the OLA:
a Mount the protection cap on the head in order to keep the
light out.
b Press
M
.
ORE
c
Press
Z
and wait while zeroing.
ERO
d Unmount the protection cap and connect the equipment as
shown in Figure D-8.
4 PDL Measurement:
a Press
R
.
ESET
b Note the first stable value after the window full marker (|—|)
is shown at the display in the test record.
5 Repeat step 4 twenty times.
6 Calculate the Repeatability as described in the test record.
209

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