06-18-2015 09:05 PM
I was having difficulty tuning SDV channels with my Tivo Roamio plus Motorola tuning adapter combination last night around midnight Central in Richardson, TX, 75082. I called TWC, who was broadcasting a prerecorded message about "missing channels" which usually means some sort of SDV problem.
The system-wide problem was supposedly cleared by morning, but my tuning adapter continues to flash its amber light, which means it is not connecting and I cannot tune any SDV channels.
My video service outage is right at 24 hours now. Phone support says the only option is an onsite tech visit eight days from now, which I find ridiculous since the problem is mostly likely on the system side.
Aren't tuning adapters just simple DOCSIS 2 cable modems? My SB6183 modem shows good signal levels, approximately +0 dbmv downstream and 39 dbmv upstream--don't tuning adapters operate in the same bands? This is probably not a signal issue.
I find it hard to believe that TWC allows devices on its network that have zero capability for remote support.
I have an issue open via the dslreports TWC direct support forum but received zero acknowledgement from @TWC_Help on twitter. Is there any way to get a resolution faster than eight days?
06-18-2015 09:46 PM
Yes, Get another tuning adapter.
but first, copy and paste your modems signal level page and describe where it is splitterwise from the line that feeds the TA
Then in whatever it's connected to, grab an in band channel level and the out of band levels from the TA.
06-18-2015 10:00 PM
I have these devices attached to a three-way splitter:
-3.5 --> sb6183 cable modem
-7.0 --> motorola tuning adapter (RF out terminated)
-7.0 --> Tivo
This confguration has worked for at least five years. The tuning adapter also does not connect if I bypass the splitter entirely and feed the tuning adapter only.
The last time my tuning adapter stopped connecting was March 2015, and a replacement tuning adapter also refused to connect. Then it magically started working the next week. I'm not willing to waste another trip for an ineffective equipment swap.
I can't pull signal levels from the TA becuase its diagnostic menus are not available until after it connects. The signal levels on the cable modem attached to the -3.5 port looks like this:
|Channel||Lock Status||Modulation||Channel ID||Frequency||Power||SNR||Corrected||Uncorrectables|
|1||Locked||QAM256||1||771000000 Hz||0.8 dBmV||40.2 dB||0||0|
|2||Locked||QAM256||2||777000000 Hz||0.8 dBmV||40.2 dB||0||0|
|3||Locked||QAM256||3||783000000 Hz||0.6 dBmV||40.2 dB||0||0|
|4||Locked||QAM256||4||789000000 Hz||0.8 dBmV||40.2 dB||0||0|
|5||Locked||QAM256||5||795000000 Hz||0.1 dBmV||40.2 dB||0||0|
|6||Locked||QAM256||6||801000000 Hz||0.3 dBmV||40.2 dB||0||0|
|7||Locked||QAM256||7||807000000 Hz||0.3 dBmV||40.2 dB||0||0|
|8||Locked||QAM256||8||813000000 Hz||0.2 dBmV||40.2 dB||0||0|
|9||Locked||QAM256||9||819000000 Hz||0.0 dBmV||40.2 dB||0||0|
|10||Locked||QAM256||10||825000000 Hz||-0.1 dBmV||40.0 dB||0||0|
|11||Locked||QAM256||11||831000000 Hz||-0.4 dBmV||40.0 dB||0||0|
|12||Locked||QAM256||12||837000000 Hz||-0.4 dBmV||40.0 dB||0||0|
|13||Locked||QAM256||13||843000000 Hz||-1.0 dBmV||39.4 dB||0||0|
|14||Locked||QAM256||14||849000000 Hz||-0.8 dBmV||39.8 dB||0||0|
|15||Locked||QAM256||15||855000000 Hz||-1.2 dBmV||39.7 dB||0||0|
|16||Locked||QAM256||16||861000000 Hz||-1.7 dBmV||39.5 dB||0||0|
|Channel||Lock Status||US Channel Type||Channel ID||Symbol Rate||Frequency||Power|
|1||Locked||ATDMA||55||5120 Ksym/sec||30600000 Hz||38.5 dBmV|
|2||Locked||TDMA||53||2560 Ksym/sec||19400000 Hz||36.5 dBmV|
|3||Locked||ATDMA||54||5120 Ksym/sec||24200000 Hz||36.8 dBmV|
|4||Locked||ATDMA||56||2560 Ksym/sec||37000000 Hz||40.0 dBmV|
Current System Time: Thu Jun 18 22:45:58 2015
07-20-2015 08:01 AM
What you should try is a 2 way splitter with the modem on one port, the tuning adapter on the otjher with the Tivo on the TA's output port instead of the load resistor.
That will provide 3.5 dB better signal to the TA