Does Connection Look Fine?
 

Connection seems a wee bit off, since Tech visit on Monday.
Just wondering what your opinion regarding my stats are?

Downstream
DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8
Frequency (Hz) 307000000 Hz 283000000 Hz 291000000 Hz 299000000 Hz 315000000 Hz 323000000 Hz N/A N/A
Lock Status(QAM Lock/FEC Sync/MPEG Lock) Locked Locked Locked Locked Locked Locked N/A N/A
Channel ID 88 85 86 87 89 90 N/A N/A
Modulation QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 N/A N/A
Symbol Rate (Msym/sec) 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 N/A N/A
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 N/A N/A
Power Level (dBmV) -2.7 dBmV -4.0 dBmV -5.5 dBmV -3.5 dBmV -1.6 dBmV -1.5 dBmV N/A N/A
RxMER (dB) 37.5 dB 36.2 dB 36.2 dB 37.1 dB 37.1 dB 37.0 dB N/A N/A

Upstream
US-1 US-2 US-3 US-4
Channel Type 2.0 2.0 N/A N/A
Channel ID 41 42 N/A N/A
Frequency (Hz) 23600000 Hz 30200000 Hz N/A N/A
Ranging Status Success Success N/A N/A
Modulation QAM16 QAM16 N/A N/A
Symbol Rate (Sym/sec) 5120000 5120000 N/A N/A
Mini-Slot Size 128 128 N/A N/A
Power Level (dBmV) 44.3 dBmV 45.0 dBmV N/A N/A
T1 Timeouts 0 0 N/A N/A
T2 Timeouts 0 0 N/A N/A
T3 Timeouts 0 0 N/A N/A
T4 Timeouts 0 0 N/A N/A

Upstream Burst
Req
(1) Init Maint
(3) Per Maint
(4) Adv Short
(9) Adv Long
(10) Adv UGS
(11)
Modulation Type QPSK QPSK QPSK 16QAM 16QAM 16QAM
Differential Encoding Off Off Off Off Off Off
Preamble Length 56 384 384 96 104 104
Preamble Value Offset 396 6 6 1028 1028 1028
FEC Error Correction (T) 0 0 0 6 8 8
FEC Codeword Information Bytes (K) 16 34 34 150 236 236
Maximum Burst Size 0 0 0 3 0 0
Guard Time Size 8 48 48 8 8 8
Last Codeword Length Fixed Fixed Fixed Short Short Short
Scrambler On/Off On On On On On On

Network Log
First Time Last Time Priority Error Number Description
04/02/2014 08:39:39 04/02/2014 08:39:39 Critical (3) 2436694078 TOD established
03/02/2014 08:29:33 03/02/2014 08:29:33 Warning (5) 84020300 MDD message timeout;CM-;CMTS-;CM-QOS=1.1;CM-VER=3.0;
03/02/2014 08:29:45 03/02/2014 08:29:45 Critical (3) 84000100 SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-;CMTS-;CM-QOS=1.1;CM-VER=3.0;

Re: Does Connection Look Fine?
 

The levels are OK.

The Network Log doesn't say much. 3-Mar : was that a reboot? Or turning the SH1 on? Likewise 04-Mar?

Re: Does Connection Look Fine?
 

Tech Visit was on Monday added White VM Branded Boxes behind Broadband & TV...
Not sure about the 04/02/2014 entry...

Re: Does Connection Look Fine?
 

He added isolators, basically did not find an issue

Re: Does Connection Look Fine?
 

What would be the reason he installed them?
The Tech visit was to swap a Set Top box due to hard-drive failure, which he changed but upon looking round the property mentioned that he needed to fit the isolaters which you mentioned behind Broadband & Television - Also checked we had one in the main room of the house.

Re: Does Connection Look Fine?
 

Every install should/must have them to both provide surge protection (some measure of lightning arrest) and de-couple any DC/AC which can be optionally supplied (48-60v?) down amp cascade on shield of coax to power line extenders (although it shouldn't bypass tap boards anyway).

Similar principle if you check in your NTE5 Master BT socket?

You might consider that works both ways as it protects the VM tech's eye's lighting up and hair curling when his head is in the street cab if you somehow managed to place mains on the internal drop cable? ;)

That said you can see a few cowboy installs without isolators. :(

Re: Does Connection Look Fine?
 

Ah i see, so the engineer was just doing something which should of got done.
When it was first installed...

Re: Does Connection Look Fine?
 

Possibly or if it visually looks old he might have just renewed it?
You need to speak to JB66 or someone that has REAL hands on knowledge and not an armchair theorist! ;)