All posts by Arun
Below are all of Arun's postings, with the most recent are at the bottom of the page.
Hi Brian, appreciate the quick response.
I was studying the effects on an STB when a re-tune is not done after a MAJOR NCD change.
However, I could not find enough technical information, especially about the the possible changes (and the current) DVB Identifiers across the UK, anywhere online.
I was not sure about the TSIDs' behaviour, but thanks a lot for providing me with the information.
| link to this comment |
Hi Brian. Yes.
The DBook indicates that the TSID of a multiplexer can or need not change, and in any case an invariant tsid can be included in the NCN descriptor.
My concern regarding these recent changes across the UK was that, while in theory, since the services are the same, and it's the same transmitter that is now broadcasting on a new frequency (no regional variants, indicating no change in TSID), a re-tune can be done to acquire the new frequencies.
However, I have no concrete data to indicate the same, i.e., the change is just an RF channel / frequency change.
| link to this comment |
Hi Brian,
Thanks so much for the information.
You have been extremely helpful and very informative.
The last comment clears my doubts regarding the service configuration changes.
Based on the NCND change type and the information above, I assume a re-tune would be pretty much necessary to acquire the new (relocated) frequencies (and basically to be able to play them).
Since the PSI information would be cross-carried in the other (static) mux, I think I can go forward with my study.
Your help is much appreciated.
| link to this comment |
Hi Brian,
I see that there has been some transmitter engineering on the Divis transmitter on the 12th of June.
Some of my equipment recorded a momentary loss of signal on one of the multiplexes (COM6), at approximately 11:00 AM on the 12th June.
Would it be possible that the transmission was interrupted due to the engineering works ?
Thanks,
Arun
| link to this comment |
Thanks Brian, for the information.
Explains why it was just a momentary loss, and not a loss for an extended time or a low signal condition.
| link to this comment |
Hi Brian,
I'm on the Divis Mux and I'm seeing some abnormal activity in the PAT table on RF Channel 21 (PSB2 - UTV mux). The PAT seems to be refreshing constantly even though there is no apparent change in the transmitted information. (& the version numbers seem to be toggling between 01 & 0F). Any idea why this is occurring ? Thanks.
| link to this comment |
Monday 3 June 2013 2:53PM
Stoke-on-trent
Hi,
I see that this transmitter is scheduled for an engineering period on June 5th, where "D3&4 moves from ch61 to ch49", as part of the c60/c61 clearance. I was wondering, would it be just a change of the channel/frequency or would the TSIDs (and other DVB identifiers) of the those channels change as well ? Could you please let me know as this peice of technical information would be quite useful for something i'm working on.