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Old 20-03-2009, 22:49   #3
xxnoelziexx
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Join Date: Aug 2008
Posts: 19
xxnoelziexx is an unknown quantity at this point
Re: 50mb Problem Engineer Booked next Thursday

I have attached a pic of du meter running. I have connected to Giganews 20 connections as you can see spikes up and down.

Please could someone check below for any problems.

Cable Modem Status
Item Status Comments
Acquired Downstream Channel 315.000122 MHz Primary Downstream Locked
Ranged Upstream Channel 25.808001 MHz Success
Provisioning State OK Operational
Ethernet Link Status Up 100 Mbps/Full duplex


Cable Modem Downstream
DS-1 DS-2 DS-3 DS-4
Frequency 315000000 299000000 307000000 N/A
Lock Status
(QAM Lock/FEC Sync/MPEG Lock) Y/Y/Y Y/Y/Y Y/Y/Y N/N/N
Channel Id 38 36 37 N/A
Modulation 256QAM 256QAM 256QAM N/A
Symbol Rate
(Msym/sec) 6.952 6.952 6.952 N/A
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 N/A
Power Level
(dBmV) 1.74 1.43 1.57 N/A
RxMER
(dB) 38.26 37.94 37.94 N/A
Correctable
Codewords 7685 7510 9347 N/A
Uncorrectable
Codewords 319 295 316 N/A

Cable Modem Upstream
US-1 US-2 US-3 US-4
Channel Type 1.0 N/A N/A N/A
Channel ID 1 N/A N/A N/A
Frequency
(Hz) 25808000 N/A N/A N/A
Ranging Status Success N/A N/A N/A
Modulation 16QAM N/A N/A N/A
Symbol Rate
(KSym/sec) 2560 N/A N/A N/A
Mini-Slot Size 2 N/A N/A N/A
Power Level
(dBmV) 53.75 N/A N/A N/A
T1 Timeouts 0
T2 Timeouts 0 0 0 0
T3 Timeouts 3 0 0 0
T4 Timeouts 0 0 0 0

Cable Modem Upstream Burst
US-1
Req
Init Maint
Per Maint
Short Data
Long Data

(1)
(3)
(4)
(5)
(6)



Modulation Type QPSK QPSK QPSK 16QAM 16QAM

Differential Encoding OFF OFF OFF OFF OFF
Preamble Length 36 100 100 128 128
Preamble Value Offset 244 6 6 504 504
FEC Error Correction (T) 0 5 5 4 9
FEC Codeword Information Bytes (k) 16 34 34 76 232
Maximum Burst Size 0 0 0 7 0
Guard Time Size 22 48 48 22 22
Last Codeword Length FIX FIX FIX SHORT SHORT
Scrambler on/off ON ON ON ON ON
Attached Images
File Type: jpg Spikes.jpg (293.9 KB, 52 views)
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