EXFO LFD-200 Live Fiber Detector - Manual (Page 14)

Operating the Live Fiber Detector 9
8. If you have the LFD-202 or LFD-202P Live Fiber Detector model, look at the
relative core power of the fiber on the display.
LFD-202 LFD-202P
Displays the relative core power with a
negative dB value between –6 and
–40 dBm.
If the core power is greater than 0 dBm,

The unit displays HI.

Traffic LED indicators are valid.
If the core power is below –40 dB,

The unit displays LO.

Traffic LED indicators are no longer
valid.
Displays the relative core power with a
dB value between +4 and –19 dBm.
If the core power is greater than
+ 15 dBm,

The unit displays HI.

Traffic LED indicators are valid.
If the core power is below –19 dB,

The unit displays LO.

Traffic LED indicators are no longer
valid.