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Televes
Televes
Televes
Televes

0482-2013

Measurement of optical attenuation without a light generator

Description: 

Sometimes the installer does not have the necessary tools to do a certain measurement.

The same way you could use a broadband amplifier without input signal as an all-band noise source to be able to obtain the frequency

 

response of a network, in optical networks an optical transmitter could be used as a light source for the measurement of optical attenuation.
Obviously it would be a stopgap because the transmitter only transmits in one of the windows (1310nm) and we recommend you to make this measurement in the different windows.
The optical transmitters generate a determined optical power which is almost the same with or without an RF input. Being an amplitude modulation, in which the "carrier" is the light, the signal power is hardly influenced by the "modulation signal".

 

The +3dBm delivered by an optical transmitter of Televes (ref. 8674) can be used as a reference value in the H45 meter equipped with optical interface.
Through the menu shown in the figure, you would choose the option "set ref.." Once is done, the optical signal measurement will be made in dB relative to the referenced power.

Televes
Televes Televes