Tempo OPM510 Mode D'emploi page 19

OPM510 • OPM520 • SLS520 • SLS525 • SLS530 • SLS535 • SLS536
Two Test Jumper Method: Link Loss (cont'd)
1. If a complete test set (light source and optical power meter) is
available at each end, it is advisable to test the output power of
the sources and the condition of the test jumpers before
commencing measurement of the link.
Connect each source and optical power meter with a test jumper,
as shown above. The sources should be set to continuous wave
(CW) output mode. The power meters should be set to the correct
wavelength and to dBm measurement units. Note the P1 and P2
dBm readings. For example, a SLS520 1310 NM laser source
should read approximately -1dBm on the optical power meter.
A
Test
jumper 1
Source
FORWARD LOSS (dB) = P1 – P3
Cable
plant
Test
jumper 2
P3
Power meter
B
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