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Based on 1st Ad-hoc meeting this week we are looking for the following data:
We currently use 66 miliohm/meter cable (CAT6A) as our lowest resistance channel in our worst case data base.
The questions are:
1. Should we expect to lower resistance cable? If Yes, which CATEGORIES above CAT6A? what wire gauge?
2. In a typical channel, if we exclude the horizontal cable (90m max), what will be the expected minimum resistance per meter of the cables from the equipment to the horizontal cable? I assume we are talking about total of 5m each side? (My initial working channel model is 2m+3m+90m+3m+2m=100m 4 connectors).
3. What is the minimum channel length allowed if there is such definitions in any spec. TIA/EIA or IEEE?
4. What may be considered practical, minimum channel length or cable length that will present minimum TBD resistance within this length? I preference a data in the form of resistance per meter and cable length.
IEEE802.3bt Task Force, Channel Pair To Pair Resistance Imbalance Ad Hoc Chair.
Power over HDBaseT Subcommittee
Chief R&D Engineer
Analog Mixed Signal Group
1 Hanagar St., P.O. Box 7220