Ambit >> signal levels

Ambit >> signal levels
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TX CS Aggie @ 12th Oct 02:53PM:
Ambit >> signal levels

My girlfriend lives on the 3rd floor in a apartment complex and uses the cable and internet company Grande Communications in Austin Tx. Her internet work alright but pages wont load till you hit refresh. It got a good bit better when I moved her over to OpenDNS but it is still not as good as I would like.

Ambit
Model: U10C018

Upstream Modulation : QAM16
Upstream transmit Power Level : 51.5 dBmV

Downstream Modulation : QAM256
Downstream Receive Power Level : -4.3 dBmV
Downstream SNR : 38.2 dB

From my experience her levels are marginal. Am I right?

Is a tech call warranted and is there any thing I could do to help improve things?

Would a different cable modem be better for this application? I have spare Motorola SB5120 and SB5101, Scientific Atlanta DPC-2100 and Linksys BEFCMU10v4 cable modems.
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jimbopalmer @ 12th Oct 03:06PM:
Re: Ambit >> signal levels

Upstream Power level is marginal.

»homepage.ntlworld.com/robin.d.h.···nal.html
--
I tried to remain child-like, all I achieved was childish.
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TX CS Aggie @ 12th Oct 03:57PM:
Re: Ambit >> signal levels

According to the link you posted I fall within acceptable ranges.

Upstream Transmit Power : range +8 to +58 dBmV (perfered below +55 dBmV)

Downstream Received Power: DOCSIS specification requires a range of -15 dBmV to +15 dBmV
Downstream SNR: should be 30 dB or higher:

At first look I thought my Upstream Transmit Power was alittle high and Downstream Received Power was a little low.

what ranges are good and what are marginal?
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jimbopalmer @ 12th Oct 06:22PM:
Re: Ambit >> signal levels

From the web site

Downstream SNR: should be 30 dB or higher: the higher the better.

Downstream Received Power: the DOCSIS specification requires cable modems to function correctly with downstream power levels in the range -15 dBmV to +15 dBmV: power readings at or close to those extremes are likely to be unacceptable.

Upstream Transmit Power: Values in the forties are the most common.
--
I tried to remain child-like, all I achieved was childish.
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TX CS Aggie @ 13th Oct 05:57PM:
Re: Ambit >> signal levels

said by jimbopalmer :

From the web site
Upstream Transmit Power: Values in the forties are the most common.

thank you

said by jimbopalmer :

From the web site

Downstream SNR: should be 30 dB or higher: the higher the better.

Downstream Received Power: the DOCSIS specification requires cable modems to function correctly with downstream power levels in the range -15 dBmV to +15 dBmV: power readings at or close to those extremes are likely to be unacceptable.

Helpful... Cough, cough.
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