[linux-dvb] DiSEqC trouble with TT S-1500

[P. van Gaans]

On 02/13/2008 03:01 PM, Doru Marin wrote:
> Hi,
> 
> 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:
>> Hi,
>>
>> 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 do.
>>
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>>   
> 

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.