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

[P. van Gaans]

On 02/18/2008 02:04 PM, Doru Marin wrote:
> P. van Gaans wrote:
>> 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:
>>>>      
>>>>> 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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>>>>>> linux-dvb at linuxtv.org
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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.
>>>>
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>>>>
>>>>       
>>> 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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>> linux-dvb at linuxtv.org
>> http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
>>   
> Hi,
> 
> Strange scenario. You're not saying anything about input types and the 
> switch type. Are you sure that are properly connected ? How the switch 
> inputs are marked and from where you got the input signals ? Please 
> elaborate, if you want a proper answer.
> I suggest to play with 'scandvb' from dvb-apps package instead of 
> Kaffeine. Look into scanning results if the scanned channels match with 
> what you wished to have on those positions.
> 
Hi,

What do you mean with input type?

Anyway, this is my config:

Visiosat Bisat G3C for 19.2/28.2/23.5 + Triax 54cm for Hotbird
4 quad LNBs

Spaun SAR 411F:
A = Astra 19.2
B = Astra 28.2/Eurobird1
C = Astra 23.5
D = Hotbird

Maximum 4/1:
A = Astra 19.2
B = Astra 28.2/Eurobird1
C = Astra 23.5
D = Hotbird

All works fine on a standalone so it is connected correctly.