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Conrad – if each of the curves is indeed a mixture of different cables, what is the method of for determining a single point? If it is an average, that seems to make no sense, if it is a max hold, I can see a utility, but it is still indicative
of ILD. In a max hold, it would likely represent MORE ILD, because the minima (greatest RL) across a short frequency span would still be the reflection on the worst cable at a frequency (with all other cables having LOWER values, or more deviation),
and the maximum peak (least RL across a frequency span) would be the most mismatched cable. That means that the most mismatched cable, the one determining your peaks and hence the envelope of your RL mask would have to have quite pronounced oscillation, being
at the peaks, and at or below the minima at each frequency point. The BEST case (least ILD) it would seem, is where the curve is matched and determined by a single cable. George Zimmerman, Ph.D. President & Principal CME Consulting, Inc. Experts in Advanced PHYsical Communications 310-920-3860 From: Conrad Zerna <conrad@xxxxxxxxxxxxxx>
Hi George, The 3 curves on slide 10 are for a mixture of cables, one curve for each topologies shown on the same slide. Thanks, Conrad From: George Zimmerman <george@xxxxxxxxxxxxxxxxxxxx>
CAUTION: This email is from an external origin! Due to time constraints, I did not follow up, but the data shown on slide 10 indicated 3 cables, each of which had 0.3m segments, and a close view shows the oscillation of the return loss curve at approximately a frequency of 300 MHz, which
would be indicative of insertion-loss deviation (ILD), so, while I would welcome more data, I do not believe there was a mixture of cables as Conrad’s answer suggested. Due to time, I did not repeat my question, which remained unanswered:
George Zimmerman, Ph.D. President & Principal CME Consulting, Inc. Experts in Advanced PHYsical Communications 310-920-3860 This email has been scanned for spam and viruses by Proofpoint Essentials. Click
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