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-   -   60M : Power levels? (https://www.cableforum.uk/board/showthread.php?t=33698246)

Snshll 16-07-2014 18:44

Power levels?
 
Past few weeks the connection randomly stops working for a certain time, sometimes 5 minutes sometimes 30 and its incredibly annoying. I'm guessing it has something to do with downstream and upstream so was hoping someone would have a look and tell me if I need an engineer? Thanks

Downstream
DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8
Frequency (Hz) 266750000 N/A N/A N/A N/A N/A N/A N/A
Lock Status(QAM Lock/FEC Sync/MPEG Lock) Locked Unlocked Unlocked Unlocked Unlocked Unlocked Unlocked Unlocked
Channel ID 73 N/A N/A N/A N/A N/A N/A N/A
Modulation 256QAM Unknown Unknown Unknown Unknown Unknown Unknown Unknown
Symbol Rate (Msym/sec) 6.952000 N/A N/A N/A N/A N/A N/A N/A
Interleave Depth I=12
J=17 N/A N/A N/A N/A N/A N/A N/A
Power Level (dBmV) 2.88 N/A N/A N/A N/A N/A N/A N/A
RxMER (dB) 38.26 N/A N/A N/A N/A N/A N/A N/A
Pre RS Errors 340 N/A N/A N/A N/A N/A N/A N/A
Post RS Errors 284 N/A N/A N/A N/A N/A N/A N/A

Upstream
US-1 US-2 US-3 US-4
Channel Type 2.0 N/A N/A N/A
Channel ID 2 N/A N/A N/A
Frequency (Hz) 39400000 N/A N/A N/A
Ranging Status Aborted N/A N/A N/A
Modulation 64QAM N/A N/A N/A
Symbol Rate (Sym/sec) 5120000 N/A N/A N/A
Mini-Slot Size 4 N/A N/A N/A
Power Level (dBmV) 53.75 N/A N/A N/A
T1 Timeouts 0 0 0 0
T2 Timeouts 0 0 0 0
T3 Timeouts 3 0 0 0
T4 Timeouts 0 0 0 0

Upstream Burst
Req
(1) Init Maint
(3) Per Maint
(4) Adv Short
(9) Adv Long
(10) Adv UGS
(11)
Modulation Type 16QAM 16QAM 16QAM 64QAM 64QAM 64QAM
Differential Encoding OFF OFF OFF OFF OFF OFF
Preamble Length 36 384 384 64 64 64
Preamble Value Offset 396 6 6 396 396 396
FEC Error Correction (T) 0 5 5 6 10 9
FEC Codeword Information Bytes (K) 16 34 34 76 231 236
Maximum Burst Size 0 0 0 3 0 18
Guard Time Size 22 48 48 22 22 22
Last Codeword Length Fixed Fixed Fixed Shortened Shortened Shortened
Scrambler On/Off ON ON ON ON ON ON

RobboEdin 16-07-2014 18:53

Re: Power levels?
 
You have a more fundamental problem as you have only one downstream channel. I would make a fault call to Virgin Media.

jb66 16-07-2014 21:48

Re: Power levels?
 
your upstream is too high causing the hub to only lock onto 1 downstream


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