Optical Power Measurement - SEFRAM 7849B User Manual

18.3

Optical power measurement

To access the Measurement of Optical Power, press the key "Optical power measurement".
Warning: The appliance can measure only one wavelength at a time. If there are several wave-
lengths, measurements will be wrong.
Plug the optical fiber at the output of your equipment on to the optical FC APC socket of the appliance.
Measurement of the losses at insertion:
Make a first measurement at the LNB of your installation: press the reference of the desired wavelength.
The appliance will keep this measure as a reference and automatically switches to dB.
Make measurements everywhere on your installation to check losses of the optical signal.
Selection of the displayed wavelength: 1310, 1490 or 1550nm
Selection of the displayed
unit: dBm, mW or dB for the
measures of losses
Measurement of optical
power for the selected
wavelengths
Display of the optical power of
the wavelengths
Purple: 1310nm
Yellow: 1490nm
Blue: 1550nm
7849B – 7859B – 7817B
Graphics of measure vs. time
Purple: 1310nm
Yellow: 1490nm
Blue: 1550nm
p.
81
Reference for the
active wavelength
of the measures
of losses
Selection of the
recording duration:
10mn
60mn
8h
24h