Re: EDP sync problem

[Reyn Ouwehand <reyn@reyn.net>]

On Nov 7, 2007, at 2:57 PM, Matthias Grob wrote:

> yes, the Y connection is fine!

That's the best news so far. I've been also trying to mix BrotherSync  
and BeatSync and even with MIDI, but that wasn't all very satisfying.  
This works pretty nice now, though not always 100% flawless sadly.

> I did not test with very long cable... and I cannot here...
> did you test with short cables?

No I haven't.. But I guess because it's so random, it's hard to test  
anyhow. But it's a good tip and I'll try it. I have made a new cable  
that is soldered ny a pro so that I don't have all these extensions  
anymore. That could also help I guess to make it more stable.  
*fingers crossed*

> Its actually interesting to look at the signal at the tip of the  
> cable, whenever you have access to a scope:
> its a square wave at sample frequency which has steps in it for  
> each unit connected. when those steps "walk", we are not synced.  
> The loss over the cable should be visible, too.

Maybe it's good to do a test like that sometimes. Though I should  
first find someone that could actually measure it with the right tools.

> does anyone remember having seen such spontaneous Record/Overdub as  
> Reyn experiences?
> looks like a new problem to me...

Its like when I'm in RoundMode, it will not wait sometimes until the  
round is complete and just starts recording halfway and loose sync  
completely.

> does it only happen when all three units are connected?

Yes, it does. Normally, the 2 units I use are fine. Though also they  
don't always stay 'together' when I have like Midi Clock running for  
example.

> sorry for that confusion... that cirquit is to critical, somehow...
>
> On 7 Nov 2007, at 06:35, REYN wrote:
>
>>
>> On Nov 7, 2007, at 1:18 AM, L.A. Angulo wrote:
>>
>>> Matthias
>>> your EDPs must be different or i got lemons because i
>>> went throught it all,bought the crystals,had Žem on my
>>> EDP oberheim installed,didnt work with my gibson EDP
>>> pro,sold it,got a black face still didnt sync,sold the
>>> cream one got another black one and finally they
>>> managed to sync better but not always, i would say 80%
>>> of the time ...
>>> cheers
>>> Luis
>>
>> At some point I did a test, and the way it's set up now with that  
>> BrotherSync Y cable and 3 black EDP's it worked 28 times out of 30  
>> attempts. Which is 2 times too many when you're live on stage.....
>>
>> But maybe one of the cables is too long since it has to cross the  
>> whole stage and with all these lights and dimmers on stage, it  
>> can't be good and maybe sometimes the syncsignal gets distorted.
>
>> On Nov 7, 2007, at 1:08 AM, Matthias Grob wrote:
>>
>>> with three EDPs, BrotherSync should work, Rayn!
>>
>> And did I do the cabling right you think? With splitting 1 stereo  
>> cable into 2 stereo cables? Like a Y , but then stereo. It kinda  
>> works, but sometimes they loose sync or it starts recording/ 
>> overdubbing spontaneously when 1 of them is waiting in RoundMode...
>>
>>> the first fix we recommend is to exchange the crystals of older  
>>> (cream) units to match the newer (black) better.
>>> did you know about that? Let me see wether Andy still has some!
>>
>> Chrystals?!?!?! Ehhh... Well, we use now 3 BLACK ones on stage. We  
>> have a cream spare one, but its good to know that that one will  
>> cause problems. Though the cream one is one of mine, so I would  
>> love to have it up to date...
>
>
>