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chambohambo
30-10-2009, 16:35
Signal
This page provides important information about the status and quality of the communications between your cable modem and the cable modem network.

Downstream Channel
The data shown in the table below provides information about the signal coming from the network to your cable modem.

Downstream Status
Operational

Channel ID
5

Downstream Frequency
331000000 Hz

Modulation
256QAM

Bit Rate
10240000 bits/sec

Power Level
5.1 dBmV

Signal to Noise Ratio
41.4 dB

Upstream Channel
The data shown in the table below provides information about the signal being transmitted to the network from your cable modem.

Upstream Status
Operational

Channel ID
2

Upstream Frequency
25800000 Hz

Modulation
16QAM

Bit Rate
512000 bits/sec

Power Level
29.0 dBmV
--------------------------------------------------------------------------
Signal
This page provides important information about the status and quality of the communications between your cable modem and the cable modem network.

Downstream Channel
The data shown in the table below provides information about the signal coming from the network to your cable modem.

Downstream Status
Operational

Channel ID
5

Downstream Frequency
331000000 Hz

Modulation
256QAM

Bit Rate
10240000 bits/sec

Power Level
-1.2 dBmV

Signal to Noise Ratio
41.1 dB

Upstream Channel
The data shown in the table below provides information about the signal being transmitted to the network from your cable modem.

Upstream Status
Operational

Channel ID
3

Upstream Frequency
29200000 Hz

Modulation
16QAM

Bit Rate
512000 bits/sec

Power Level
35.5 dBmV
broadbandking
30-10-2009, 18:35
If I am correct the second lot the upstream power level is too low.

Are you having connection issues?
Peter_
30-10-2009, 18:58
Power Level
29.0 dBmV
--------------------------------------------------------------------------


Power Level
35.5 dBmV
Actually the first one is to low.
broadbandking
31-10-2009, 06:41
Dammit I meant the first one but 35 isn't brilliant tho
Peter_
31-10-2009, 07:33
Dammit I meant the first one but 35 isn't brilliant tho

It is within spec check the sticky:D
chambohambo
31-10-2009, 15:26
Thank you all for replying back, also can I ask what type of problems can a low upstream power level cause?
vinh1000
31-10-2009, 20:37
sticky :D
http://www.cableforum.co.uk/board/12/26006-cable-modem-signal-levels.html
i think your connection would be lost then
Sephiroth
31-10-2009, 21:16
Thank you all for replying back, also can I ask what type of problems can a low upstream power level cause?

Have a read of the attached PDF.
Peter_
31-10-2009, 21:33
Thank you all for replying back, also can I ask what type of problems can a low upstream power level cause?
Loss of connection.

---------- Post added at 21:33 ---------- Previous post was at 21:31 ----------

Have a read of the attached PDF.
What country and network does that actually apply to as Virgin has the Knowsley platform and the Langley/Bromley platform with different QAM's and power levels as shown in the stickies.
Sephiroth
31-10-2009, 22:10
Loss of connection.

---------- Post added at 21:33 ---------- Previous post was at 21:31 ----------


What country and network does that actually apply to as Virgin has the Knowsley platform and the Langley/Bromley platform with different QAM's and power levels as shown in the stickies.

Fair point except that the OP wanted to know the "type of problems" that could be expected with a low upstream power level.
Peter_
31-10-2009, 22:21
Fair point except that the OP wanted to know the "type of problems" that could be expected with a low upstream power level.
No I wanted to know what country so we could compare them.

As for information a nice find.
Sephiroth
31-10-2009, 22:59
@Moldova

The site is Chinese so far as I can tell. Which doesn't help you.

To my mind, since the document refers to DOCSIS 1/2 behaviours, it is country independent.

Would you agree?
Ignitionnet
01-11-2009, 00:25
I would recommend highly http://bradyvolpe.com/ for those who want to swot on cable networks a bit. It does assume some knowledge so be aware.