[mythtv-users] SPDIF Brackets building them for sale

[Scott Pleavin]

Would you need the same resistor and capacitor on a S/PDIF input?

Scott

Adilson Oliveira wrote:
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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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