Connection
6.4 Optical channels
Optical link module
48 Operating Instructions, 01/2020, C79000-G8976-C270-06
6.4 Optical channels
Information on optical channels
● You can measure the receive level of the two optical channels CH2 and CH3 using a
normal commercially available voltmeter attached to measurement sockets.
● The voltmeter can be connected and disconnected while the device is operating.
● The OLM is protected against a short circuit at the measurement sockets; data
transmission is not influenced.
● You can also read in the receive level of the two optical channels via floating, high
resistance analog inputs on a PLC.
● This allows you to do the following:
– To document the incoming optical power, for example for later measurements (aging,
damage)
– To run a good/bad check (limit value).
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