Cable Forum

Cable Forum (https://www.cableforum.uk/board/index.php)
-   Virgin Media Internet Service (https://www.cableforum.uk/board/forumdisplay.php?f=12)
-   -   20Mb power levels/config (https://www.cableforum.uk/board/showthread.php?t=33656937)

godz 19-10-2009 17:35

20Mb power levels/config
 
Please can somebody check my modem config/levels etc, have been having slow speeds/resyncing issues recently?

Bit worried about the operation config data rates all being 0 also, seems a bit strange to me.

Any help would be much appreciated

Cheers in advance.

Cable Modem : Euro-DOCSIS 1.0/1.1/2.0 Compliant
Boot Code Version : 1.1.2c
Software Version : 2.111.1001
Hardware Version : 1.9

Downstream Lock : Locked
Downstream Channel Id : 61
Downstream Frequency : 307000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : 7.4 dBmV
Downstream SNR : 39.1 dB


Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 25800000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 40.0 dBmV
Upstream Mini-Slot Size : 2

Req
Init Maint
Per Maint
Short Data
Long Data
(1)
(3)
(4)
(5)
(6)
Modulation Type QPSK QPSK QPSK 16QAM 16QAM
Differential Encoding Off Off Off Off Off
Preamble Length 36 100 100 128 128
Preamble Value Offset 244 6 6 504 504
FEC Error Correction (T) 0 5 5 4 9
FEC Codeword Information Bytes (k) 16 34 34 76 232
Scrambler Seed 338 338 338 338 338
Maximum Burst Size 0 0 0 7 0
Guard Time Size 22 48 48 22 22
Last Codeword Length Fixed Fixed Fixed Short Short
Scrambler on/off On On On On On


Network Access : Allowed
Maximum Downstream Data Rate : 0
Maximum Upstream Data Rate : 0
Maximum Upstream Channel Burst : 0
Maximum Number of CPEs : 1
Modem Capability : Concatenation Enabled, Fragametation Enabled, PHS Enabled

Sephiroth 19-10-2009 18:19

Re: 20Mb power levels/config
 
If that's the constant Operation Config picture (or often picture) then it's a call to VM that's needed after you've checked that your coax cables are properly seated & tightened.

adzii_nufc 19-10-2009 19:07

Re: 20Mb power levels/config
 
Yeah Unscrew em all and re-attach them

Then Download TCP optimizer and Run it, Make sure It aint set to anything below 20000, if its not set to 20000 then set it and Take a speedtest.net test at London Server and Post the Speedtest Results :)

AbyssUnderground 19-10-2009 22:03

Re: 20Mb power levels/config
 
Downstream Receive Power Level : 7.4 dBmV

Too high, you need a tech to reduce the levels. The downstream should be +/- 5dBmV to guarantee stability.


All times are GMT. The time now is 18:10.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
All Posts and Content are © Cable Forum