Cable modem signal values!!!

[TheAfu]

I was reading through threads at dslr and someone said if your cable modem upstream and downstream values aren't right you might have problems. So I have posted them in this thread hoping someone can explain will what this means.

Downstream Value
Frequency 585000000 Hz Locked
Signal to Noise Ratio 35 dB
QAM 64
Network Access Control Object ON
Power Level 4 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 5
Frequency 33008000 Hz Ranged
Ranging Service ID 7888
Symbol Rate 2.560 Msym/s
Power Level 39 dBmV

If you have any idea on wether or not this is good or bad let me know!

[mnosteele52]

Acceptable Ranges:
Downstream/Receive: -15dbmV to +15dbmV
Upstream/Transmit: 30dbmV to 55dbmV
Signal-to-Noise/Carrier-to-Noise Ratio: 30dB or greater

You might check the modems manufacturers site for ranges or even your ISPs site.

:D ;)

[UOD]

Signal strength...measured in dB, that is either too weak or too strong will result in loss of block sync and you will have no connection.

Signal-To-Noise ratio's that are out of range will result in packet loss and a lousy connection.

Knowing the difference between the two can help you get the right tech support if the need should arise.

A little trick for ya....with the proliferation of digital cable.....you can accurately assess the situation ie, loss of connection or packet loss. If you lose your digital cable signal...chances are you have lost your cable modem signal as well. But if you experience what is commonly called "macro-blocking" on your TV, then you will be experiencing packet loss to some degree on your modem.

The causes are many. Your digital cable box has some useful diagnostic tools which can help you figure out what is going on with your cable line...keep in mind that all 3 or 4 signals (analog,digital,data,hdtv) are delivered over the same old cable line to your home. They are just separated by the use of channels/frequency ranges.

[TheAfu]

I've seen the block plenty of times when I do watch the digital cable from time to time. Hell I just got done watch the sopranos for 3 straight hours and during the course of the 2nd episode the blocks were off and on for about 20 mins.

[robbster]

What piece of software are you using to get these values? I'm looking for some software that will give me these values so I can monitor downstream values on multiple modems at multiple locations.

TIA,

robbster