TBSDTV Community Forum

Hi Constantine, I got a sunny day, so was able to pull the dish pointer trailer out for some tests... It seems there was really a scale change between the 8922 and 8921, something around 100x, so that's why I was seeing the 8922 values "jump all over": It's just that the 8921 values fluctu...

the tbs front end drivers are not 100% open source. You compile the v4l drivers and they link to tbs binaries. Tbs was very helpful before with a lock reacquire problem I found on the 8921, so I'm back for their excellent support. I'm ok with changing my prog to accomodate for differences, but if so...

Sorry, but if they show readings in dBm (or dB for snr), they should be comparable. Of course small differences could occur, as the board is not a precision measurement instrument. If you have say, -30dBm of signal with 15dB of snr at the RF connector, these measurements *are* comparable between dif...

Thank you!

I'll modify my program to ignore those values.

And what about the signal readings? Was there a change in the scale from 8921 to 8922?

I also noticed that status for the 8921 was 01, whereas it was 00 for the 8922. Is that correct?

Thanks again,

Joao S Veiga

Hello, We were using the TBS8921 for getting signal measurements for an automatic dish pointer, but had to upgrade to the TBS8922. With the TBS8922, measurements do not seem right. Environment: Linux debian squeeze, kernel 2.6.32-5-686 32 bits TBS drivers v 121119 Below are measurements taken with t...

Hello,

I've received an excellent support from the TBS guys, who sent me a binary driver which will use the SW algo, so it is working perfectly now!

Thanks!!

I've sent an email to the TBS support asking if there's a solution from the firmware side.
BR,
Joao S Veiga

Ok, The program never gets to that point, because that is in dvb_frontend_swsigzag, and TBS8921 returns DVBFE_ALGO_HW. I modified dvb_frontend.c to printk the FESTATE, and noticed it was always TUNED after the first lock, no matter if I even disconnected the LNB cable. I then modified dvb_frontend.c...

Looking at my first log file's status codes and in frontend.h, it seems that after I point the antenna off, then back, the status gets FE_HAS_SIGNAL, but almost never gets to FE_HAS_CARRIER (when it does, it's on briefly, then off). So it doesn't even get to FE_HAS_VITERBI (FEC stable), let alone FE...

Hi Sergio, sorry for the long time it took to return here; the antenna positioner is rigged on a small trailer which I have to drag outdoors for testing - and it has been raining a lot. I also took some beating trying to do everything on a live kubuntu 12.04 usb drive, and ended up giving up to a ha...