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Topic:
HR34 IR INPUT
This thread has 54 replies. Displaying posts 1 through 15.
Post 1 made on Wednesday December 21, 2011 at 22:44
cowboy
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Has anyone gotten this to work? The DirecTV HR34 has an IR input jack, which has a schematic on the back panel that is labeled as such : tip = +5V (100 mA max), center barrel = Data IN (modulated), and barrel base = ground.

The setup is KURO 141 - using the native IR sensor- to Xantech 791-44 block.

Ive had to resort to using a flasher on the front of the unit, was really excited about using the rear panel input.
Post 2 made on Wednesday December 21, 2011 at 23:38
edizzle
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did you try stripping the carrier frequency from the code before you sent it to the HR34?
I love supporting product that supports me!
OP | Post 3 made on Thursday December 22, 2011 at 00:12
cowboy
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No, just using the DTV remote on it at present.
Post 4 made on Thursday December 22, 2011 at 01:06
edizzle
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have you tried with just signal and ground into hr34
I love supporting product that supports me!
OP | Post 5 made on Thursday December 22, 2011 at 01:19
cowboy
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yes, assuming a mono plug is providing signal and ground, and a stereo plug all three
Post 6 made on Thursday December 22, 2011 at 07:30
mark65
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It sounds to me like you plugged a mono cable into the HR34. That definitely will not work. It needs to be mono at the Xantech side and stereo at the HR34.

N/C -> Stereo Tip
Mono tip -> Stereo Ring
Mono Sleeve -> Stereo Sleeve
Post 7 made on Thursday December 22, 2011 at 12:08
Ernie Gilman
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On December 21, 2011 at 22:44, cowboy said...
Has anyone gotten this to work? The DirecTV HR34 has an IR input jack, which has a schematic on the back panel that is labeled as such : tip = +5V (100 mA max), center barrel = Data IN (modulated), and barrel base = ground.

You saw the schematic, and you even copied it for us here, but you didn't think about it to follow it.

A mono plug has a tip and a sleeve. A stereo plug has a tip, and the part of the plug that is just sleeve on a mono plug is divided into the ring, in the middle, and the sleeve, furthest from the tip.

That schematic is for thinking about. It says that the tip has five volts on it. Thus a mono plug, where you put the signal on the tip, won't work. Luckily, it won't hurt that the mono plug's sleeve shorts together the ring and sleeve connections of the stereo jack.

So, thinking about the schematic, you need a stereo plug where the sleeve is ground, the ring is your IR signal, and the tip isn't connected at all.

Last edited by Ernie Gilman on December 22, 2011 12:31.
We can't give you a good answer, or maybe any, without the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 8 made on Thursday December 22, 2011 at 12:52
BlackWire Designs
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i want the HR34 NOW :(
BlackWire Designs
Post 9 made on Thursday December 22, 2011 at 18:53
ichbinbose
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On December 22, 2011 at 12:52, BlackWire Designs said...
i want the HR34 NOW :(

I have two showing up tomorrow.
Post 10 made on Thursday December 22, 2011 at 18:55
tweeterguy
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It's crazy that they (a company who really could care less about us) actually put the IR schematic on the back panel; when have you ever seen that!?!?!

Anyone have a pic of this?
- Chris
OP | Post 11 made on Thursday December 22, 2011 at 20:29
cowboy
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On December 22, 2011 at 12:08, Ernie Gilman said...
You saw the schematic, and you even copied it for us here, but you didn't think about it to follow it.

actually I tried the stereo plug first, per the schematic, and it didnt work :) I was asked if I had tried just signal and ground, and replied I had tried a mono plug....I can see how you misinterpreted my reply:)


A mono plug has a tip and a sleeve. A stereo plug has a tip, and the part of the plug that is just sleeve on a mono plug is divided into the ring, in the middle, and the sleeve, furthest from the tip.

That schematic is for thinking about. It says that the tip has five volts on it. Thus a mono plug, where you put the signal on the tip, won't work. Luckily, it won't hurt that the mono plug's sleeve shorts together the ring and sleeve connections of the stereo jack.

So, thinking about the schematic, you need a stereo plug where the sleeve is ground, the ring is your IR signal, and the tip isn't connected at all.

Its interesting that the xantech schematic for the 791-44 shows it passes only signal and ground at the emitter jack, so I would need to get 5V to the tip somehow?
OP | Post 12 made on Thursday December 22, 2011 at 20:40
cowboy
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On December 22, 2011 at 12:52, BlackWire Designs said...
i want the HR34 NOW :(

Love it, but the HD GUI is still on the bench for it,( even though it is available to the lower models ) no word when it will be available :(
OP | Post 13 made on Thursday December 22, 2011 at 20:42
cowboy
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On December 22, 2011 at 07:30, mark65 said...
It sounds to me like you plugged a mono cable into the HR34. That definitely will not work. It needs to be mono at the Xantech side and stereo at the HR34.

N/C -> Stereo Tip
Mono tip -> Stereo Ring
Mono Sleeve -> Stereo Sleeve

thanks, I will give it a shot
Post 14 made on Saturday December 24, 2011 at 02:20
Ernie Gilman
Yes, That Ernie!
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On December 22, 2011 at 20:29, cowboy said...
actually I tried the stereo plug first, per the schematic, and it didnt work :) I was asked if I had tried just signal and ground, and replied I had tried a mono plug....I can see how you misinterpreted my reply:)

I beg to differ slightly. You stated that you used a mono plug, but you used the ring and sleeve of a stereo plug. That doesn't make the stereo plug into a mono plug. I did not misinterpret what you wrote.

Its interesting that the xantech schematic for the 791-44 shows it passes only signal and ground at the emitter [OUTPUT] jack, so I would need to get 5V to the tip somehow?

Let's back up.
The 791-44 provides emitter OUTPUTS, so only needs signal and ground, which are at the tip and ring, respectively.  No emitter needs a connection to a DC voltage.

But the HR-34 INPUT is designed to power an IR sensor and take the IR signal out of that sensor and put it into the HR-34. Thus 5 volts is provided to power a sensor. The ring carries the IR signal into the HR-34 and the sleeve is the ground.

(I just realized, though, that all the sensors I've ever used work with 12 volts, so I don't know what sensors DirecTV has in mind.)
We can't give you a good answer, or maybe any, without the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 15 made on Saturday December 24, 2011 at 09:43
KVH
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On December 22, 2011 at 12:52, BlackWire Designs said...
i want the HR34 NOW :(

[Link: solidsignal.com]
All high's, all low's, it must be.......
Einstein @ URC Control Room forum
www.einsteinaudiosystems.com
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