Supporting the OnAir USB HDTV GT - Issues

[rpertusio]

Eric89GXL,
Are you having any difficulty scanning or adding CHs in the OnAir program? I just scanned in the OnAir app, and the signal level is very low today for some reason, and only picked up 1/4 of the channels it should have. (Testing on a Comcast connection. Will try an amplifier tomorrow.)

When I tried the GB-PVR application, it only picked up 1 channel this time! I am 99% sure it was working in the latest version of GB-PVR, as I wiped the installation and program directory clean before installing the new version.

A few days ago when I scanned, the channels that worked previously had a strength in the 16000-18000 range (Quality was -21315 as you see.)

sub, I enabled the PSI logging on my scan, and the logs are nearly identical (except where Comcast has re-arranged on their end.)

I have attached 2 files here...
- 1 set of logs when we were working on this (prior to final release), when it worked
and..
- 1 set of logs I just ran, with problems due to low signal levels, I presume

I can provide the PSI log if necessary, but it is pretty much identical to what we saw during testing.

Thanks,
- Ryan Pertusio
AutumnWave Technical Support
OnAir Solution North America



FOLLOW-UP: The OnAir Program is showing a SNR of about 21dB, where previously it showed 29-33dB. After repeatedly trying to scan, eventually some came through. MY issue is related to a low SNR value, and I have no idea what changed. As I stated above, I'll try an amplifier. Eric, I would check out your signal levels in the OnAir Program as well.

[Eric89GXL]

The OnAir program works perfectly. As you recommended, I re-scanned channels with the OnAir, and it found all of my previous channels and added several new ones the cable company must have put in.

The OnAir reports a signal level of 31-33 dB consistently on all the channels I've checked. I'm stumped.

[sub]

I'll post another patch soon, which will hopefully give me more info on what is happening.

[sub]

Can you please try the attached patch? If it doesnt work, please post the c:\psi.log, Config.exe.log and config.exe-native.log.

[Eric89GXL]

It's finding channels now. Good work. I'm curious--what did you change that made it work? (I have a background in programming.) Do you still want the logs?

[sub]

A small change I made for DVB support broke it. I'm not in an ATSC country, so dont test it often and didnt notice.

[Eric89GXL]

So no I can tune channels in the config and set them to EPG channels. When I go to Live TV to watch the one channel I mapped, I get an "Error: Failure playing back file." Any suggestions there?

EDIT: I fiddled with some decoder settings and got it to play. Thanks for the help.

[sub]

I fiddled with some decoder settings and got it to play. Thanks for the help.

Great. Glad to hear you got it working.

[jenkido]

Can someone explain this QAM stuff?

As I understand it, the cable can be connected directly to this device (bypassing the STB) and then GBPVR can scan for channels?

QAM = unencrypted cable? Does QAM apply to dishes?

[sub]

As I understand it, the cable can be connected directly to this device (bypassing the STB) and then GBPVR can scan for channels?

Yes.

QAM = unencrypted cable?

Yes

Does QAM apply to dishes?

No.