185
Performance Tests
Performance Test
IV. Return Loss Test
Options 100, 101, and 121
1. Make sure that all connectors are carefully cleaned.
2. Connect the source to the HP 81534A Input. Attach the high
return loss connector of the patchcord to the Output (the high
return loss connector on these cables is the connector with the
orange sleeve). Using tape, fix the cables to the table.
Figure D-7 Return Loss Test Setup 1, Options 100, 101, 121
3. Make sure that the instrument has warmed up.
4. Disable the source, cover the end of the patchcord (for instance,
using the blue cap supplied with the fiber) and press Z
ERO to
remove offsets in the power meter.
5. Press PARAM to select the T parameter. Set the averaging time
to 1s.
Specifications Agilent 8156A
Return Loss Option 100 >35dB
Option 101 >45dB
Option 121 >45dB
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