[mythtv-users] HDMI_SPDIF directly to reciever

James Lockie bjlockie at lockie.ca
Sat Jul 5 00:10:34 UTC 2008


Alen Edwards wrote:
>
>
> James Lockie wrote:
>> Brian Phillips wrote:
>>   
>>> I think I can say why yours is working correctly.
>>>
>>> Your signal is a purely electrical SPDIF signal.  Even though it's not
>>> according to the -0.5 to +0.5 spec, it works because SPDIF is pretty
>>> versatile.  I have driven SPDIF signals successfully with 0V to +5V swings
>>> (not recommended, but it produces sound) and I have driven SPDIF signals
>>> successfully with 0V to +250mV swings.  Again, not recommended but it
>>> produces sound.
>>>
>>> Brian
>>>     
>> Am I risking frying my motherboard or receiver?
>>
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>>
>>   
>
> You certainly are risking frying the receiver.  If that goes, there is 
> a small chance it could take out the MB.
>
> Build the network or buy the adapter.
>
> Allen
Yamaha said my receiver expects 5 volts.
ASRock never answered (that was a month ago).

There is 0 volts on the RCA.

Why do I get sound if there is a zero volt signal?
I tested my voltmeter on a battery to verify it works.



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