10-05-2012, 19:20
|
#1
|
|
cf.geek
Join Date: Mar 2007
Posts: 671
|
Power Levels
Got a superhub today and gone onto VIP collection - is this setup right or is there something wrong as I can't seem to get to 100meg on a some speedtest sites. Upload is maxing out at 4 and download seems to be maxing out at 60
Downstream Channels
All QAM256 - Max Raw Bit rate 55616000 kbits/sec - Hybrid DOCSIS
Channel ID 25 Power 15.1 dBmV SNR 43.1db
Channel ID 26 Power 14.9 dBmV SNR 43.2db
Channel ID 27 Power 14.2 dBmV SNR 43.0db
Channel ID 28 Power 13.4 dBmV SNR 42.5db
Channel ID 29 Power 14.4 dBmV SNR 42.5db
Channel ID 30 Power 14.0 dBmV SNR 42.6db
Channel ID 31 Power 13.9 dBmV SNR 42.5db
Channel ID 32 Power 13.2 dBmV SNR 42.2db
Upstream
Locked
ATDMA Channel 9 -20480 Kbits/sec
Frequency 45800000 Hz
Power 26.3 dBmV
Primary Downstream Service Flow
Max Traffic Rate 111000000 bps
Max Traffic Burst 10000 bytes
Primary Upstream Service Flow
Max Traffic Rate 5120000 bps
Max Traffic Burst 16320 bytes
Thanks for any help
---------- Post added at 20:20 ---------- Previous post was at 20:09 ----------
Just to add - exNTL
Last edited by chris9991; 10-05-2012 at 19:18.
|
|
|
|
10-05-2012, 19:33
|
#2
|
|
cf.geek
Join Date: Jun 2009
Services: Services:
100Mbit on Superhub,
2x Tivo 1TB,
1x SA V+,
CISCO V HD,
TV XL with Sky Premium HD
Posts: 623
|
Try restarting superhub
|
|
|
|
|
10-05-2012, 19:52
|
#3
|
|
cf.mega poster
Join Date: Dec 2009
Location: Crawley
Age: 23
Posts: 8,872
|
Re: Power Levels
as above, also try the pinhole reset. down levels are high. up level is low.
|
|
|
|
10-05-2012, 20:40
|
#4
|
|
cf.geek
Join Date: Mar 2007
Posts: 671
|
Re: Power Levels
Nothing really changed - I'll put a message on the VM support forums later. Cheers for the help.
|
|
|
|
|
10-05-2012, 22:46
|
#5
|
|
cf.geek
Join Date: Jun 2009
Services: Services:
100Mbit on Superhub,
2x Tivo 1TB,
1x SA V+,
CISCO V HD,
TV XL with Sky Premium HD
Posts: 623
|
It will need an engineer then to lower the levels
The maximum optimal is 7, yours is well outside of this so either needs moving onto a higher attenuated tap in the cabinet or the installation of an attenuator.
|
|
|
|
|
11-05-2012, 00:42
|
#6
|
|
Temporarily Suspended
Join Date: Nov 2010
Location: Liverpool/Birmingham/St Helens/Stafford
Services: Sky Fibre Pro 80/20
Posts: 3,725
|
Re: Power Levels
upstream power is also way below spec
|
|
|
|
|
11-05-2012, 01:02
|
#7
|
|
cf.mega poster
Join Date: Aug 2009
Posts: 3,688
|
Re: Power Levels
Lower tap will sort that
__________________
"The postings on this site are my own and don't necessarily represent Virgin Media's positions, strategies or opinions."
|
|
|
|
|
11-05-2012, 22:33
|
#8
|
|
Simples
Join Date: Jul 2009
Location: RG41 (far from carlwaring)
Services: VM XXL 120;SH MM; Airport Extreme. BT Infinity2; Tivo; XL Phone; Devolo 200AV
Posts: 3,557
|
Re: Power Levels
JB's right. You must be living right close to the street box. A forward path attenuator would bring down the downstream levels but would not increase the upstream poer. Actually the upstream power doesn't need to be high because you're so close to the cabinet but any noise getting in could sort of "overcome" that low power level. So moving in the cabinet to a tap point with c. + 12 dB (greater) attenuation would do the trick.
__________________
Seph.
My advice is at your risk.
|
|
|
|
|
14-05-2012, 07:54
|
#9
|
|
cf.geek
Join Date: Mar 2007
Posts: 671
|
Re: Power Levels
The box is not too far away - about a stone's throw.
The other week we lost the internet (plus on demand) and apparently an engineer had put something on our line at the cabinet which was then removed.
I seem to recall many years ago having an attenuator on the modem but that was on the modem before the previous one.
|
|
|
|
|
14-05-2012, 08:38
|
#10
|
|
cf.mega poster
Join Date: Aug 2009
Posts: 3,688
|
Re: Power Levels
Probably a splitter!
__________________
"The postings on this site are my own and don't necessarily represent Virgin Media's positions, strategies or opinions."
|
|
|
|
|
14-05-2012, 09:38
|
#11
|
|
cf.geek
Join Date: Mar 2007
Posts: 671
|
Re: Power Levels
Apparently it was something to stop people listening in or something like that. I never spoke to the engineer so I can't confirm that it was that but you're probably right
|
|
|
|
|
14-05-2012, 10:07
|
#12
|
|
cf.mega poster
Join Date: Aug 2009
Posts: 3,688
|
Re: Power Levels
Ahh, a noise blocker, those get put on if you have loose connectors or poor cabling in your house. It's to stop noise getting onto the network
__________________
"The postings on this site are my own and don't necessarily represent Virgin Media's positions, strategies or opinions."
|
|
|
|
|
14-05-2012, 10:15
|
#13
|
|
cf.geek
Join Date: Mar 2007
Posts: 671
|
Re: Power Levels
Oh - learn something new every day. Cheers
|
|
|
|
|
15-05-2012, 17:43
|
#14
|
|
cf.geek
Join Date: Mar 2007
Posts: 671
|
Re: Power Levels
OK - we have had an engineer out and Downstream channels are between, currently, 5.7dBmV and 7.1dBmV. There's a 3dB forward path attenuator on the shub. The first speed test I ran gave about 10 m/bit.
Upstream power level is 31.8 dBmV.
Are these figures now within parameters?
|
|
|
|
|
15-05-2012, 17:46
|
#15
|
|
cf.mega poster
Join Date: Dec 2009
Location: Crawley
Age: 23
Posts: 8,872
|
Re: Power Levels
upstreams better still not the best. he could have tested a 10dB. not even a 6dB!
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT. The time now is 18:19.
|
Join CF
You are here: 
Snake
