Power Scan Question - what is "+D" ?

[Salukian]

On the Lifetime Ultra, when starting a scan, the selectable scan modes are:

FTA
FTA + D
ALL
ALL + D

What does the "+D " mean?

User Manual does not explain.

[pmb1010]

Originally Posted by Salukian

On the Lifetime Ultra, when starting a scan, the selectable scan modes are:

FTA
FTA + D
ALL
ALL + D

What does the "+D " mean?

User Manual does not explain.

My guess is I think it stands for "data", but not sure why "ALL" would not encompass what is says... I would suspect this data to be channels like Directway.
But this is speculation on my part.

[wejones]

Originally Posted by pmb1010

My guess is I think it stands for "data", but not sure why "ALL" would not encompass what is says... I would suspect this data to be channels like Directway.
But this is speculation on my part.

I've long wondered about this too. I agree that "data" is the only thing that comes to mind, however I can't imagine why a receiver that can't do anything with a data stream would have such an option.
Ie the various options here seem to be to control whether the receiver saves a "program" after it has come up with all the PIDs on the transponder, such as whether to save a channel that's encrypted even though you can't watch it. However data streams usually aren't on the mpeg streams as "programs", so the receiver can't save that as a program anyway, so I'm at a loss for what it would do differently.
It is weird that the manual doesn't even seem to comment on this, saying that FTA and ALL are the only options. Makes me wonder if it has nothing to do with "data" or type of signal, but perhaps something to do with how the found signals are stored? Like are duplicates allowed? Are old ones deleted? Maybe a trip through the "D" section of a dictionary would come up with some other "D" words.
PS, to original poster, spent 7 years at SIU.

[Salukian]

Originally Posted by wejones

PS, to original poster, spent 7 years at SIU.

hehehe which 7 years?

I scanned once using ALL + D, then again using " ALL " and it appears the
data channels program in as "TV 20500" (example) using ALL + D and
are ignored with "ALL".

Wierd.

<snip>

[wejones]

Originally Posted by Salukian

hehehe which 7 years?

I scanned once using ALL + D, then again using " ALL " and it appears the
data channels program in as "TV 20500" (example) using ALL + D and
are ignored with "ALL".

Wierd.

<snip>

65-72

As a test, I did a scan on one sat (T6 I think), and with the ALL setting, it picked up 14 transponders and something like 29 or 30 channels (on one polarity), but with the ALL+D setting it found one more transponder and one or two more channels. I tried to figure out which transponder was missing, which wasn't easy, because that sat is constantly changing due to news feeds coming on and off, however I found one transponder that had a video channel (which I think was encrypted), which was not picked up with the ALL setting. I looked at this transponder with TSREADER, and it showed that it had 4 IP/DVB data streams.
So for some reason, in the ALL setting it must ignore transponders that have data streams. I didn't get the TV 2050 thing you did, perhaps because there was a real video channel on the transponder.
I'm not sure why the receiver would ignore transponders with data if they have real video channels. Strange.

[wejones]

I did another experiment, and did a power scan on a satellite which has a transponder that only has data on it, rather than a transponder with a video program along with some data streams. I did an "ALL+D" scan.
When finding the transponders, freqs/SR values, it found the transponder with the data, but as expected, when it went back and tried to list programs for that transponder, it didn't find any.
So the 2 experiments were:

Transponder with data and scrambled video program... ALL--skips ALL+D saves channel.
Transponder with only data... neither ALL nor ALL+D saves (nothing to save)

At this point, I thought, what about a transponder with data and an unscrambled video program. So I tried a satellite with that type transponder. Did a "FULL" SR scan. Neither All nor ALL+D picked up the transponder?#?$?@ Since this was a high SR signal, I switched to a "HIGH SR" scan rather than a FULL scan, which does high and low SR. This time both ALL and ALL+D found the unscrambled video channel.
So at this point, I'm thinking that my previous results may have just been random. Ie the Ultra seems to have a mind of it's own relative to whether it will find some signals. I've always had better luck doing first a "low SR" scan then a "high SR" scan. That way I seldom miss channels that I know are there.
But I guess the question still is, what, if any, reason would there be to do an ALL scan, since it seems to some times ignore some channels for no obvious reason. And I'm still not convinced that the "D" means "DATA".
I think I'll ask this question on another forum to see if anyone there has any ideas.

[Salukian]

I tried the ALL + D again, and this time I only used the "low" SR. I think
data channels are fooling the tuner.