Re: scan/scan-s2 doesn't tune, but dvbtune does?

[Lou Otway <louis.otway@tripleplay-services.com>]

Michael Akey wrote:
> I can't get the scan/scan-s2 utilities to lock any transponders 
> (DVB-S).  My test satellite is AMC1 103W, the Pentagon Channel tp. 
> This is probably some simple user error on my part, but I can't figure 
> it out.  I have a Corotor II with polarity changed via serial command 
> to an external IRD.  C/Ku is switched by 22KHz tone, voltage is always 
> 18V.  Ku is with tone off, C with tone on.  Speaking of which, is 
> there a way to manually set the tone from the arguments on the scan 
> utilities?
>
> Here's what I've tried and the results:
>
> $ ./scan-s2 -a 0 -v -o zap -l 10750 INIT
> API major 5, minor 0
> scanning INIT
> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
> initial transponder DVB-S  12100000 H 20000000 AUTO AUTO AUTO
> initial transponder DVB-S2 12100000 H 20000000 AUTO AUTO AUTO
> ----------------------------------> Using DVB-S
> >>> tune to: 12100:h:0:20000
> DVB-S IF freq is 1350000
> >>> tuning status == 0x03
> >>> tuning status == 0x01
> >>> tuning status == 0x03
> >>> tuning status == 0x01
> >>> tuning status == 0x03
> >>> tuning status == 0x00
> >>> tuning status == 0x01
> >>> tuning status == 0x03
> >>> tuning status == 0x00
> >>> tuning status == 0x00
> WARNING: >>> tuning failed!!!
> >>> tune to: 12100:h:0:20000 (tuning failed)
> DVB-S IF freq is 1350000
> >>> tuning status == 0x03
> >>> tuning status == 0x01
> >>> tuning status == 0x00
> >>> tuning status == 0x00
> ...snip...
>
> Same thing happens if I use just 'scan' and not 'scan-s2.'
>
> If I use dvbtune, it works though..
>
> $ dvbtune -f 1350000 -p H -s 20000 -c 0 -tone 0 -m
> Using DVB card "Conexant CX24116/CX24118"
> tuning DVB-S to L-Band:0, Pol:H Srate=20000000, 22kHz=off
> polling....
> Getting frontend event
> FE_STATUS:
> polling....
> Getting frontend event
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI 
> FE_HAS_SYNC
> Bit error rate: 0
> Signal strength: 51648
> SNR: 26215
> FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI 
> FE_HAS_SYNC
> Signal=51648, Verror=0, SNR=26215dB, BlockErrors=0, (S|L|C|V|SY|)
> Signal=51776, Verror=0, SNR=26624dB, BlockErrors=0, (S|L|C|V|SY|)
>
> The tuning file 'INIT' contains only the following line:
> S 12100000 H 20000000 AUTO
>
> I'm using v4l-dvb drivers from the main repo as of about a week ago.  
> I am running kernel 2.6.32 on Debian testing.  Any help is appreciated 
> ..and hopefully it's just a simple flub on my part!
>
> --Mike
Try using a non-auto FEC and rolloff.

Some devices won't accept auto for these parameters.

Cheers,

Lou