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100M upgrade - power levels?
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Old 30-04-2012, 16:26   #1
Bluestraw
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100M upgrade - power levels?

I just had my 50M upgraded to 100M today, and a new superhub fitted. Before the engineer left, I asked if my downstream power was a bit high but was told that 'below 12 is fine'. I has previously read that 7 was the recommended limit - do these look ok, as I have a high SNR? Appreciate the view of the experts!

Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power SNR Docsis/EuroDocsis locked
Locked QAM256 73 55616000 Kbits/sec 299000000 Hz 7.4 dBmV 41.9 dB Hybrid
Locked QAM256 74 55616000 Kbits/sec 307000000 Hz 7.3 dBmV 42.4 dB Hybrid
Locked QAM256 75 55616000 Kbits/sec 315000000 Hz 7.3 dBmV 41.9 dB Hybrid
Locked QAM256 76 55616000 Kbits/sec 323000000 Hz 7.0 dBmV 41.1 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
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
Upstream Channels
Lock Status Modulation Channel ID Max Raw Bit Rate Frequency Power
Locked ATDMA 4 20480 Kbits/sec 45800000 Hz 34.5 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
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Old 30-04-2012, 18:50   #2
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Re: 100M upgrade - power levels?

7 is fine. The official spec defines +15 as the limit but various different people (and indeed different parts of Virgin Media) use different numbers that define a smaller "optimal" range.
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Old 30-04-2012, 21:56   #3
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Re: 100M upgrade - power levels?

Quote:
Originally Posted by qasdfdsaq View Post
7 is fine. The official spec defines +15 as the limit but various different people (and indeed different parts of Virgin Media) use different numbers that define a smaller "optimal" range.
Thank you - appreciate it.
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