Black Box Fiber Meter Manual page 56

Length measurement accuracy may be affected by
excessive cable attenuation. If measured loss fails the
selected cable's standard loss limit, the length/propagation
delay measurements will be incorrectly high. We
recommend that you correct excessive loss and retest the
cable to achieve accurate length/propagation delay values.
If the Main Unit displays the message "REMOTE
SEARCH Remote Not Found,"make sure that the Main
Unit and Remote Unit are properly connected to test
jumpers and to the cable under test. To do that, check
the following:
• Verify that the RX port on the Main Unit is
connected through the cable to the TX port on
the Remote Unit.
• Verify that the TX port on the Main Unit is
connected through the second cable to the RX
port on the Remote Unit.
If connections to Fiber Meter are correct, then there is a
break or substantial loss in one of the two cables. To
isolate the problem cable, the Fiber Meter handsets can
be used as a manual optical source and power meter.
See Chapter 6 for details. Identify and correct the
problem cable, then repeat the Autotest connections
and test.
CAUTION
CHAPTER 5: Autotest
53