02-12-2007, 12:19
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#1
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Join Date: Feb 2005
Location: Stoke on Trent
Services: XL BB, XL PHONE, XL TV, V+
Posts: 50
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Power levels wrong?
Around 3 weeks ago we had an outage in Stoke and i had no connection for 4 days. Ever since that my modem has been going mad, by this i mean the sync light will flash for hours and hours meaning no connection.
When my connection finally comes back the speeds i get are atrocious,on usenet i have to have 20 connections just to get 1.4mb/s.
Sun, 02 Dec 2007 12:15:04 GMT
Test 1: 1024K took 1722 ms = 594.7 KB/sec, approx 4900 Kbps, 4.79 Mbps
Test 2: 1024K took 1141 ms = 897.5 KB/sec, approx 7395 Kbps, 7.22 Mbps
Test 3: 1024K took 1127 ms = 908.6 KB/sec, approx 7487 Kbps, 7.31 Mbps
Test 4: 2048K took 4033 ms = 507.8 KB/sec, approx 4184 Kbps, 4.09 Mbps
I check my power levels on the modem and they are:
Downstream Receive Power Level : -20.0 dBmV
Downstream SNR : 27.2 dB
Upstream transmit Power Level : 60.3 dBmV
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02-12-2007, 13:29
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#2
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Power Level Helper
Join Date: Jun 2007
Location: Shottingham
Age: 17
Services: Virgin BB 2mb
Freeview
Posts: 473
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Re: Power levels wrong?
Your upstream is at its limit, your down stream power level is way too low. SNR is fine though. 
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02-12-2007, 13:34
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#3
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cf.geek
Join Date: Mar 2005
Location: here
Age: 39
Services: Sky,Sky max 16mb ADSL, BT/Sky Phone.
Posts: 707
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Re: Power levels wrong?
Quote:
Originally Posted by Stokerockscene
Around 3 weeks ago we had an outage in Stoke and i had no connection for 4 days. Ever since that my modem has been going mad, by this i mean the sync light will flash for hours and hours meaning no connection.
When my connection finally comes back the speeds i get are atrocious,on usenet i have to have 20 connections just to get 1.4mb/s.
Sun, 02 Dec 2007 12:15:04 GMT
Test 1: 1024K took 1722 ms = 594.7 KB/sec, approx 4900 Kbps, 4.79 Mbps
Test 2: 1024K took 1141 ms = 897.5 KB/sec, approx 7395 Kbps, 7.22 Mbps
Test 3: 1024K took 1127 ms = 908.6 KB/sec, approx 7487 Kbps, 7.31 Mbps
Test 4: 2048K took 4033 ms = 507.8 KB/sec, approx 4184 Kbps, 4.09 Mbps
I check my power levels on the modem and they are:
Downstream Receive Power Level : -20.0 dBmV
Downstream SNR : 27.2 dB
Upstream transmit Power Level : 60.3 dBmV
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Nope you'vr got serious problems there, upstream and downstream levels are way out of spec, and the SNR IS a problem as well, that should be about 33-35dB.
Check all your internal wiring, the connectors are tight, no damage to any cabling. If you don't find any issues then you need to call and get someone out.
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02-12-2007, 14:38
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#4
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Join Date: Feb 2005
Location: Stoke on Trent
Services: XL BB, XL PHONE, XL TV, V+
Posts: 50
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Re: Power levels wrong?
no cable problems that i can see, will try and get an engineer out asap.
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