Anyone know...

[obob]

what kind of recieve power level I should be expecting on my cable modem?
Just wondering if anyone knows...

[_kill__bill]

What type of cable is it?

I'm at

Downstream
    Freq/Power:    585.000 MHz    -18 dBmV    
    Signal to Noise Ratio:     28 dB    
    Modulation:   QAM256   
Upstream
    Freq/Power:   30.992 MHz    28 dBmV    
     Channel Type:    DOCSIS 1.x (TDMA)   
     Symbol Rate:    2560 kSym/sec   
     Modulation:    QAM16

but it could be different elsewhere.

[obob]

I don't get anything nearly that detailed, but I can get the following out of it:

Transmit Power Level: 37.5 dBmV
Receive Power Level: 1.0 dBmV

assuming recieve is similar to your downstream, either you have godzilla for an ISP, or something probably isn't right

[Refalm]

I'm at

Downstream
    Freq/Power:   514.750 MHz 3 dBmV
    Signal to Noise Ratio: 35 dB
    Modulation:   QAM256

Upstream
    Freq/Power:   38.608 MHz    43 dBmV
    Channel Type: DOCSIS 1.x (TDMA)
    Symbol Rate: 2560 kSym/sec
    Modulation:   QAM16

I don't get anything nearly that detailed

I went to the IP address of my cable modem. Try 192.168.100.1

[obob]

yeah, 192.168.100.1 gives me what i posted back

it's very, simple...

[Orethrius]

I just ran a quick Google convert on mine, here are my numbers.

Downstream
Freq/Power: 723 MHz -5.4 dBmV
Signal to Noise Ratio: 33 dB

Upstream
Freq/Power: 24.8 MHz 46.5 dBmV

[Lead Head]

Frequency  747000000 Hz  Locked  
Signal to Noise Ratio 34 dB  
Power Level -16 dBmV    
The Downstream Power Level reading is a snapshot taken at the time this page was requested.  Please Reload/Refresh this Page for a new reading

Upload
Channel ID 1  
Frequency   26208000 Hz  
Ranged    Power Level 53 dBmV

[obob]

well, thanks for the replies, guessing it's normal if two of you can have - values for downstream and still be online...

[Orethrius]

well, thanks for the replies, guessing it's normal if two of you can have - values for downstream and still be online...

 IIRC, that has something to do with "Node Distance Compensation" or something on those lines.  Basically, a higher-powered (neighborhood) node needs the modem to down-compensate the power levels to keep a steady conn, whereas a weaker node needs the modem to up-compensate the power levels.  I'm sure you can find something more clear about the whole process on Wikipedia or Google.

Now were the frequency to be negative, then I might show some concern.

[obob]

idk, i haven't studied much into the workings of cable internet, one of the few things I can't find a ton of literature on, I know it was showing very low negatives before line amplification, and would lose signals, and now with line amplifcation, it's showing low positives...so I was wondering if the amplifier sucked, but then forgot that it can work with negatives...whatever, i'm not going to question it as long as it keeps working...

[Orethrius]

idk, i haven't studied much into the workings of cable internet, one of the few things I can't find a ton of literature on, I know it was showing very low negatives before line amplification, and would lose signals, and now with line amplifcation, it's showing low positives...so I was wondering if the amplifier sucked, but then forgot that it can work with negatives...whatever, i'm not going to question it as long as it keeps working...

 On the contrary: if you never question, you never learn.  We've offered what insight we have on the matter, but it might be best to pursue it elsewhere for a more detailed explanation.  Google is your friend, but if you know somebody that works for a major player they might have more of an idea regarding the subject.  

[obob]

true, true however i think i've got a bit much on my plate regarding stuff to read up on...

some day...

[bedouin]

http://www.dslreports.com/faq/optonline/2.+Setting+up+and+Testing+your+Modem#1084

Q: What should my modem levels be? (#1084)   
A: Receive: -15dbmV to +15dbmV
Transmit: 30dbmV to 55dbmV
Carrier/Noise Ratio: >30dB

The closer to the center of the spec, the better (for receive and transmit).

As you get closer to the edge of the spec, you might start to see some connectivity problems.

Note: signal strength does not really affect speed. So as long as you aren't getting disconnects/pauses/packet loss, you probably are ok, even if you are nearer the edge of the spec.

A lot of ISPs lock you out of the diagnostics specifically so you can't read the signal strengths and complain.  If you're ever in a situation like that and you call a 'tech' and they do a remote reading telling you, "everything looks good" ask, "No, but what are the exact readings?"  Good to them can mean one or two degrees above or below failing.

[pofnlice]

Frequency   331000000 Hz
Signal To Noise Ratio   38.4 dB
Power Level   -3.9 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream    Value
Channel ID   3
Frequency   29000000 Hz
Power   54.0 dBmV

[obob]

http://www.dslreports.com/faq/optonline/2.+Setting+up+and+Testing+your+Modem#1084



A lot of ISPs lock you out of the diagnostics specifically so you can't read the signal strengths and complain.  If you're ever in a situation like that and you call a 'tech' and they do a remote reading telling you, "everything looks good" ask, "No, but what are the exact readings?"  Good to them can mean one or two degrees above or below failing.

lol, "tech" doesn't do crap, i've been put on hold for them to check a schedule to answer a question  :nothappy: WHAT?!

but their service people always end up not failing me, lol