GLC-LH-SM Min Distance SM Cable

[deepak.manghani]

Hi,

Just need a clarification, what is the minimum cable distance of OFC SM cable, (existing Cable )

My segments are working in either

150 mts

or

250 mts distance

Do I need any attenuators ? if yes how do i calculate the value

Thanks

Deepak

[Tom Randstrom]

The GLC-LH-SM SFP can operate with short SMF cable.  The Receiver will accept a maximum optical signal power level of -3dBm.  The maximum output power of the Transmitter for this SFP is -3dBm; so these SFPs over a short SMF fiber link do not require an attenuator.

This is different with the longer reach SFPs (such as GLC-ZX-SM; max Recv = -3dBm, max Transmit = +5dBm), where a 10dB attenuator should be added to short fiber spans.

Hope this helps.

[deepak.manghani]

Yes Thanks