HP 70000 series, User Manual

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Fiber-Optic Cable and Connector Summary
The performance of a ber-optic connector varies depending on the following:
The specic connector used.
Whether the connector is a physically contacting or a physically noncontacting connector .
Whether the connection is dry or wet.
Use the following guidelines to achieve the best possible performance when making
measurements on your ber-optic system:
Ensure the connector interfaces are clean before taking any measurements .
Use care in handling all ber-optic connectors .
A void using index-matching compounds if possible .
If an extremely good match is a concern, characterize the connector interfaces under both
dry and wet conditions . The results will show you the level of return loss performance you
can expect from the connectors , dry and wet.
Use the cleaning methods described in this section for dry and for wet connections .
When physical contact is not made at the ber interface , use a reliable or recommended
index-matching compound to achieve the best possible return loss , the lowest optical
reection and the lowest insertion loss .
Keep connectors covered when not in use .
Fiber-Optic Connections C-5