Steven Toth wrote:
On Tue, Dec 15, 2009 at 4:53 AM, Lou Otway
<louis.otway@xxxxxxxxxxxxxxxxxxxxxxx> 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
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