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IndyGamer

join:2012-09-26

1 edit

[Signals] How does this look?

Click for full size
Does this look OK?

New to this multi channel modem world.

I seem to get 2.8MB/s or 22.4 Mbps sustained.
So within the 80% for 25/4.

IndyGamer

join:2012-09-26

Anyone?



owlyn
Premium,MVM
join:2004-06-05
Newtown, PA

Looks good. No worries, but keep an eye on the upstream when the weather gets warm. You really want the levels to be in the 40s, though up to 53 is okay.



JigglyWiggly

join:2009-07-12
Pleasanton, CA

looks good to me



EG
The wings of love
Premium
join:2006-11-18
Union, NJ
kudos:9
reply to owlyn

said by owlyn:

though up to 53 is okay.

Blanket statement ???

andyross
Premium,MVM
join:2003-05-04
Schaumburg, IL
reply to owlyn

said by owlyn:

Looks good. No worries, but keep an eye on the upstream when the weather gets warm. You really want the levels to be in the 40s, though up to 53 is okay.

With 3(or more)-channel bonded upstream, 51dB is the max for 32QAM and 64QAM, 52dB for 16QAM. I'm guessing the Zoom says ATDMA for 32 and 64QAM, and TDMA for 16QAM.


flwpwr

@comcast.net

pretty sure atdma is just that the cmta equalization on that carrier went from 8 taps [tmda] to 24 taps [not cable taps, EQ chart points for guesstimating locations of problems] but generally atma is going to be limited to a legacy 16 qam carrier for pre docsis 2.0 modems, not that it can only be used for those but that's usually the reason it exists since they do not support atdma.

The symbol rate is the key you could have a atdma 16 qam carrier, not sure why you would but you could.