Steve Windle, Trilithic Product Manager, wrote the Open Mic column for the May, 2010 issue of CED. The column, Upstream Spectrum Troubleshooting, is on page 16.
"Always a challenge, the upstream band in HFC networks is getting closer and closer to full utilization. Until now, it’s been a common practice to look at adjacent, unoccupied spectrum to evaluate noise/distortion performance. This technique assumes that what’s happening in adjacent spectrum is also happening in the active channel, and we all know what happens when we ass-u-me."
