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View Full Version : 100M Hub Connection setting

setch
23-03-2012, 19:35
Can anybody tell me if the below settings are, good or bad.

Thanks
Setch

Downstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power SNR Docsis/EuroDocsis locked
Locked QAM256 83 55616000 Kbits/sec 299000000 Hz 8.6 dBmV 40.9 dB Hybrid
Locked QAM256 81 55616000 Kbits/sec 283000000 Hz 9.5 dBmV 39.8 dB Hybrid
Locked QAM256 82 55616000 Kbits/sec 291000000 Hz 9.1 dBmV 40.9 dB Hybrid
Locked QAM256 85 55616000 Kbits/sec 307000000 Hz 7.4 dBmV 40.1 dB Hybrid
Locked QAM256 86 55616000 Kbits/sec 315000000 Hz 8.2 dBmV 40.3 dB Hybrid
Locked QAM256 87 55616000 Kbits/sec 323000000 Hz 7.9 dBmV 39.9 dB Hybrid
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV 0.0 dB Unknown


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Upstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power
Locked ATDMA 2 20480 Kbits/sec 35800000 Hz 48.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Harryn9000
23-03-2012, 19:38
power levels are bit low should be between +3 and -7
setch
23-03-2012, 20:06
Thanks Harryn9000. What sort of impact would I expect to see with levels like this?
Kymmy
23-03-2012, 20:08
power levels are bit low should be between +3 and -7

Don't you mean -3 and +7.. They're at +9 atm, not optimal but should still work OK, SNR and also upstream power is OK
General Maximus
24-03-2012, 08:46
i would still want a -5 attenuator put on it though.
jb66
24-03-2012, 09:12
i would still want a -5 attenuator put on it though.

no such thing
Kymmy
24-03-2012, 10:07
Oh stop being pedantic :p:
qasdfdsaq
24-03-2012, 14:02
I'd put a -6 on it personally.
Harryn9000
24-03-2012, 19:46
kymmy i meant those firgures fella my was higher than that and i got loss of speed was main issue i had engineer round yesterday and -7 is what virgin look for it to be at and i'm getting full speed now after taking atunenator off if it going through a splitter that can add +5 onto your reading.
cookdn
24-03-2012, 21:30
Don't you mean -3 and +7.. They're at +9 atm, not optimal but should still work OK, SNR and also upstream power is OK

The superhub seems quite tolerant of high downstream power levels so I doubt the OP will have a problem.

Despite specifically asking the installation technician whether he should check the power levels when our VM internet was installed (the existing connection to the VM network had not been used since 2007) all he was interested in was getting sync (to my surprise the house was still connected at the cabinet). The downstream power levels vary from > +12 dBmV to < +14 dBmV which is a lot higher than optimal, but the connection is stable and operates without problem.

Best regards
David

Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power SNR Docsis/EuroDocsis locked
Locked QAM256 57 55616000 Kbits/sec 299000000 Hz 13.9 dBmV 38.2 dB Hybrid
Locked QAM256 58 55616000 Kbits/sec 307000000 Hz 13.3 dBmV 38.0 dB Hybrid
Locked QAM256 59 55616000 Kbits/sec 315000000 Hz 13.2 dBmV 37.9 dB Hybrid
Locked QAM256 60 55616000 Kbits/sec 323000000 Hz 13.0 dBmV 37.9 dB Hybrid