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scjohnson
join:2010-07-21
Chicago, IL
Motorola MB8600
Ubiquiti EdgeRouter X
Apple AirPort Extreme (2013)

scjohnson

Member

[Signals] What the heck? Extremely high downstream receive

Click for full size
Yes, my connection is still working.

Is the modem reading levels incorrectly, or is something seriously wrong?

pclover
join:2008-08-02
Santa Cruz, CA

1 edit

pclover

Member

If those are truly the signal levels i'm surprised your connection is still working. I'd figure downstream channels that high would fry the tuner in equipment.

I would lead on something is wrong with the way the modem is reading the signal. Does a reboot change things?

B4Knight
Premium Member
join:2014-03-20
Colon, MI

B4Knight to scjohnson

Premium Member

to scjohnson
Holy Hot Signal Batman!!!

I'm surprised your modem and service are even still working??? Do you have any splitters before the modem or amplifiers?

scjohnson
join:2010-07-21
Chicago, IL

scjohnson

Member

My levels were much more reasonable a month ago: »[Signals] Significant number of uncorrectables on 711 MHz

train_wreck
slow this bird down
join:2013-10-04
Antioch, TN

train_wreck to scjohnson

Member

to scjohnson
almost looks like a decimal point got misplaced. so the first 3 power reading should be "3.6dbmv", "3.57dbmv", "3.73dbmv", etc.

telcodad
MVM
join:2011-09-16
Lincroft, NJ

telcodad to scjohnson

MVM

to scjohnson
Like pclover , I think your Zoom modem's downstream power reading mechanism/calculation has suffered a glitch of some kind. A reboot should hopefully straighten it out.

I remember my old SB6121 modem getting into a strange state once where it was also showing weird signal or SNR readings.

scjohnson
join:2010-07-21
Chicago, IL
Motorola MB8600
Ubiquiti EdgeRouter X
Apple AirPort Extreme (2013)

scjohnson

Member

Click for full size
Looks like that's all it was, things are definitely improved after a reboot.

Johkal
Cool Cat
MVM
join:2002-11-13
Pennsyltucky

Johkal

MVM

I hope the decimal point is still off. Those Downstream levels if correct are not stellar.

scjohnson
join:2010-07-21
Chicago, IL
Motorola MB8600
Ubiquiti EdgeRouter X
Apple AirPort Extreme (2013)

scjohnson

Member

said by Johkal:

I hope the decimal point is still off. Those Downstream levels if correct are not stellar.

Yeah, still looking quite high, much more so than a month ago.

Kasoah
join:2013-08-20
Merced, CA

Kasoah to Johkal

Member

to Johkal
said by Johkal:

I hope the decimal point is still off. Those Downstream levels if correct are not stellar.

It's not that bad, one of the channels at my parents house reaches +17dbmv on the sb6141 but there hasn't been any issues. No ping jitter or anything like that either.

Johkal
Cool Cat
MVM
join:2002-11-13
Pennsyltucky

Johkal

MVM

The Downstream levels are not proportional to the Upstream levels. Not balanced.