From: Phil (ciscostudent1@yahoo.com.br)
Date: Thu Jan 16 2003 - 19:17:07 GMT-3
Please check:
http://www.cisco.com/en/US/products/hw/switches/ps679/products_installation_and_configuration_guide09186a00800d9eec.html#45012
Phil <ciscostudent1@yahoo.com.br> wrote:
Curtis,
The minimum distance for SX and LX is 2 meters.
For the ZX (because the transmit output is between 4.77 and 0 dBm) and the maximum receiver input is -3 dBm) you can burn the receiver if you use them in a distance less than enough to attenuate the gain to be less than -3dBm in the receiver side.
The way to overcome this is to use attenuators (www.fiberdyne.com). Yuo may need if the distance between the 2 switches is such that using a LX is not enough but using a ZX will burn the receiver. We use 5dBm and 10 dBm attenuators.
Phil
cphillips@suscom.net wrote: Hello all,
Does anyone have definitive information on the minimum distance that LX
GBICS should be allowed to operate over Single Mode fiber cables?
I have heard there is an issue with laser burning if the distance is too
short or something to that effect.
Can anyone verify and point to a definitve reference?
Thanks,
Curtis
.
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