[BP] channel loss difference

[Charles Moore <charles.moore@xxxxxxxxxxxxx>]

Title:

guys,

     There was some discussion during the teleconference about the relative
channel losses of various channels provided by me and simulated by joe
and matt.  I looked at several of them ad fit them to Amax per 69A and found:

    channel          loss at Nyquist  fit at Nyquist

AgilentITTC_1016         25.1         25.6dB        
"Agilent TC Measured"    26.4         26.4dB
modITTC23withCoupler.s4p 22.3dB       22.6dB
ITTC_23                  23.1dB       23.0dB

The simulations joe did which i was citing were on "Agilent TC Measured"
and ITTC_23, which differ in fit (smoothed) loss at Nyquist by 3.4dB. 

Note some channels differ from their nominal loss at Nyquist because i picked
channels with an Mtc which would give the correct loss but they have Btc
values which shifts the whole line a bit.  The ISI should still be the same as
expected with the nominal loss.

                                         charles

-- 
|--------------------------------------------------------------------|
|       Charles Moore 
|       Avago Technologies
|       Image Solutions Division
|       charles.moore@avagotech.com
|       (970) 288-4561
|--------------------------------------------------------------------|