Agilent Technologies 11896A, User'S And Service Manual

Page: 128 / 140

Measurement Considerations
Insertion loss variation with paddle position
When the paddles of the Agilent 11896A are rotated, ber bend losses and
polarization dependent losses may result in small changes in insertion loss .
On the Agilent 11896A standard and Option 010, the insertion variation
is determined almost entirely by the polarization dependent loss (PDL) of
the ber optic connector interface . The insertion loss variation with paddle
position of the Agilent 11896A versions having connectors will measure
approximately 60.02 dB when using clean, undamaged FC/PC connectors .
N O T E
Even minor damage or contamination to the connector faces will result in a signicant increase
in insertion loss, therefore insertion loss is listed in T able 1-1 as a characteristic , non-warranted
performance parameter .
Optical return loss
On the Agilent 11896A standard and Option 010, the optical return loss is
limited by the return loss of the ber optic connectors . The return loss of the
Agilent 11896A versions having connectors will measure approximately 35 dB
when using clean, undamaged FC/PC connectors .
B-3