Fluke Versiv, Руководство пользователя

Страница: 117 / 260

Chapter 6: Certify Fiber Cabling
Requirements for Reliable Fiber Test Results
103

For multimode fiber, make sure you use the encircled flux test
reference cords (EF-TRCs) or standard mandrels correctly. See
“About the EF-TRC (Encircled-Flux Test Reference Cords)” on
page 106 and “TRCs Necessary for Links with APC Connectors”
on page 109.
 Keep the tester’s software current. The latest software is
available on the Fluke Networks website. See “Update the
Software” on page 233.

Make sure you select the correct fiber type and test limit for
the job, and the index of refraction for the fiber is correct. See
Table 6 on page 111.
 Make sure the battery is fully charged.

Send the modules to a Fluke Networks service center every 12
months for factory calibration.
About the Reference for Fiber Tests
The reference procedure for fiber cable sets a baseline power
level for loss measurements. If the power level that enters the
fiber from the source changes, the reference and your loss
measurements will be incorrect. The power level can change, for
example, when the temperature at the job site increases or
decreases or when you disconnect then reconnect a test reference
cord at the tester’s output port. So, it is important to set the
reference frequently.
When to Set the Reference
Note
At the job site, turn on the testers and let them sit
for a minimum of 5 minutes before you set the
reference. Let them sit longer if they are above or
below ambient temperature.