[c-nsp] Cisco 7609, LR Transceiver for Short Distance Connection

[Mikael Abrahamsson]

On Thu, 9 Sep 2010, Danijel wrote:

> He should actually be ok even with ER and no attenuators as minimum 
> transmit power is -4.7 dBm and max receive power is -1 dBm (per cisco 
> site). Just check optical power levels and see if they are in limits.

Well, the maximum allowable transmit power is +4 dBm so that's definitely 
blinding on a -1 dBm maximum receiver.

So unless one always checks each individual unit before trying it (think 
future spare replacements etc) it's better to go with worst combination of 
min/max values and then a 5 dB attenuator is a must.

-- 
Mikael Abrahamsson    email: swmike at swm.pp.se