[mythtv-users] Comcast DTA direct channel change?

[Kirk Bocek]

On 3/20/2010 5:04 AM, Mike Perkins wrote:
> Ron Garrison wrote:
>> I just received my quota of 2 DTA's from Comcast. They are made by
>> Thomson and are model number DCI1011COM. This model has the option of
>> hooking up an external IR receiver via an 1/8th inch jack in the back
>> (and in fact an external receiver is provided with it). The provided
>> IR receiver has a stereo jack and not a mono jack. Not sure what that
>> means.
>>
>> So the question is - can I use something like IguanaIR with a direct
>> cable hookup, completely bypassing actual IR? Is there a blaster
>> other than IguanaIR that also provides 1/8th inch outputs?
>>
> The stereo jack means that the receiver is a standard 3-pin chip using
> +v supply, ground, and IR signal out. For your next mission, you get to
> figure out which is which... Not to mention which chip...
>
> If you're interfacing, you should only need to connect ground and IR
> signal to your opto-isolator/whatever to simulate the signal.

Ron, I posed the same question to the list a few weeks ago. I got the 
same response as Mike is giving: you need to wire in an "opto-isolator" 
to get it to work. Try searching this list (using Google with the 
"site:mythtv.org" option).