[linux-dvb] DiSEqC trouble with TT S-1500
P. van Gaans
w3ird_n3rd at gmx.net
Mon Feb 18 13:48:11 CET 2008
On 02/16/2008 01:20 AM, P. van Gaans wrote:
> On 02/13/2008 09:21 PM, P. van Gaans wrote:
>> On 02/13/2008 03:01 PM, Doru Marin wrote:
>>> Can you explain how you select those 4 positions ? DiSEqC commands or
>>> tone/voltage changes ?
>>> Also can you determine the input type of those positions (Hi/Low,
>>> H/V, etc) ? A scenario to see when and why that happens, would be
>>> more useful.
>>> P. van Gaans wrote:
>>>> I've got a Technotrend S-1500 (if it matters: I use it with Kaffeine
>>>> 0.8.3). It works mostly fine, but there's a strange problem. With my
>>>> Spaun 4/1 DiSEqC switch (they cost approx 25-40 euro), I can only
>>>> switch without trouble to position 1 and 2. If I tune directly to
>>>> position 3 it won't lock.
>>>> However, if I first tune to a channel on position 1 or 2 and try a
>>>> channel on position 3 after that, it will work. Position 4 however
>>>> is completely unreachable.
>>>> On a standalone receiver, there's no trouble with the same cable.
>>>> Now Spaun is a really expensive and respected brand. So their
>>>> switches possibly work in a different way, because a cheap Maximum
>>>> 4/1 switch works perfectly with the S-1500. Position 1, 2, 3 and 4
>>>> all work perfectly. I also did some "dry testing" indoors and it
>>>> looks like a 7 euro Satconn 4/1 switch would also work fine, but a
>>>> 17 euro Axing SPU 41-02 probably won't.
>>>> I'm guessing this could be solved in stv0299.c but I'm not much of
>>>> an expert. I took a look at the code but I'm not really sure what to
>>>> linux-dvb mailing list
>>>> linux-dvb at linuxtv.org
>> I select them with Kaffeine. Hi/low and H/V doesn't matter. I tried
>> upgrading to Kaffeine 0.8.5 but that doesn't make a difference. The
>> "scan" application has the same issues.
>> linux-dvb mailing list
>> linux-dvb at linuxtv.org
> Nobody any ideas? If not, does anybody have some idea what the
> difference between position 1+2, pos 3 and pos 4 could be? I was
> thinking 1 and 2 might be working because of toneburst, but I don't
> think Kaffeine uses such a signal and that doesn't explain why pos 3
> works if first tuning to 1 or 2 and 4 doesn't work at all.
I've figured out a bit more. If I tune directly to postion 3, I get pos
1. Whenever I tune to pos 4, I get pos 2.
I'll also ask people from Kaffeine as I'm not sure if the problem is in
the application, driver or somewhere else.
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