[c-nsp] Where do you put the optical attenuators?

[John Souvestre]

Hi Tassos.

I would think that putting them on the receiver side would be best.  This way
they will attenuate the noise along with the signal.

John

    John Souvestre - Southern Star & Integrated Data Systems - www.sstar.com


 > -----Original Message-----
 > From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
 > bounces at puck.nether.net] On Behalf Of Tassos Chatzithomaoglou
 > Sent: Friday, October 26, 2007 8:31 AM
 > To: cisco-nsp
 > Subject: [c-nsp] Where do you put the optical attenuators?
 > 
 > Does anyone know if in-line optical attenuator have to be connected on the
 > receiver side only?
 > 
 > For example in the following link
 > 
 > 
 >     A---------------------C
 > SW1                      SW2
 >     B---------------------D
 > 
 > SW1 is transmitting through A and receiving through B
 > SW2 is transmitting through D and receiving through C
 > 
 > Where is the best place to put the attenuators? B & C?
 > Can i put them on A & B?
 > 
 > I did some tests putting them on every possible side (as long as there is one
 > on each fiber strand) and all of them worked, but i
 > was wondering if there is a best practice about them.
 > 
 > --
 > Tassos
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