[mythtv-users] SPDIF Brackets building them for sale

[Adilson Oliveira]

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Willy Boyd escreveu:
> On Dec 20, 2007 2:56 PM, Sean Goodpasture <goofygrin at gmail.com> wrote:
>> I'd have to take apart my main front end... Maybe this weekend.  I'm using
>> it with the asus M2NPV and it's not nearly as complicated as what the other
>> David posted...
> 
> So you just wired it straight up?  No resistors or capacitors needed?
> Because I have the same motherboard.  Sounds like a simple little hack
> to attempt this weekend.

You *do* need a resistor and capacitor. If you wire in directly, it
might work but the resistor helps adjusting the impedance and the
capacitor provides a DC isolation. I failed to do that once (I have the
same MB) and almost burned my receiver.
A simple circuit like this is enough.

         100nF
  TTL ----||-----330ohm--+--------- coax S/PDIF signal out
  in                     |
                      100ohm
                         |
 Ground -----------------+--------- coax signal ground


[]s

Adilson.
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