From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp1.oregonstate.edu ([128.193.15.35]:34278 "EHLO smtp1.oregonstate.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752206AbZLRTWb (ORCPT ); Fri, 18 Dec 2009 14:22:31 -0500 Message-ID: <4B2BD6C2.50307@onid.orst.edu> Date: Fri, 18 Dec 2009 11:23:46 -0800 From: Michael Akey MIME-Version: 1.0 To: Steven Toth CC: Lou Otway , Linux Media Subject: Re: scan/scan-s2 doesn't tune, but dvbtune does? References: <4B269F1A.30107@onid.orst.edu> <4B275CA2.406@tripleplay-services.com> <83bcf6340912180525h1bbaf229j9b2c81ffacb8fe76@mail.gmail.com> In-Reply-To: <83bcf6340912180525h1bbaf229j9b2c81ffacb8fe76@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Steven Toth wrote: > On Tue, Dec 15, 2009 at 4:53 AM, Lou Otway > wrote: > >> 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. >> > > Michael, > > The silicon in question doesn't do automatic FEC detection. Be sure to > specify which FEC you need for the sat. If in doubt, walk through them > all manually. Pilot auto detect is done in s/w was was added a long > time ago. > > - Steve > > Steve et al, It would appear that it does in fact do auto FEC since I don't specify it with dvbtune and it works just fine (with both my Prof 7300 and 7301.) I think it's a tone issue, but then again, why does attempting to scan something on both bands C and Ku (tone on, and tone off respectively) not work? I figured if it's a tone issue that only one band would work. I tried setting the FEC and even the delivery system (S1 rather than S) and it makes no difference. I could try the DVB-S2 NBC mux on that satellite too.. but I'm not sure why that would make a difference. If you folks have any other ideas, let me know. Thanks for your responses so far! --Mike