(Posted in remote control forum too)

The system I am asking about here uses a TSU6000, RX77, and many Xantech devices.

Some time ago I tried to take an output from the RX77 and use it as a signal to go into a Xantech bus. I could not find a way to do it, including buffering and voltage shifting. I ended up having to use a Xantech IR sensor sitting next to the RX77 chassis.

Problem is, it does not work every time. Sometimes it works better if the sensor is moved back, sometimes if it is moved closer.

Has anyone been successful in taking an electrical output from a RF extender and using it to feed the electrical bus of a Xantech system?

I have done this before, taking an rx-77 and connecting it to a xantech connecting block via the signal and ground inputs, where say the dinky link should go i'm pretty sure it worked but it's going back a few years

You may need to use an IR LINC:
[Link: smarthome.com]

Do a search in this forum. There have been a couple of discussions on it. I think in one, he said that he had to connect it to the IR ouput (not input) on the Xantech block. Don't know why it worked, but it also helped someone else who was having the same problem.

CJ

Thanks! I'll look that up. Since each output has a 470 ohm resistor between it and the bus, what that did was put a 470 ohm resistor in series with the Extender output...I'll try that.

Here's what I do:
Use a 1/8" mini to mini cable to go from one of the 4 outputs of the RF extender to the "HIGH IR OUT" of a Xantech 791-44 Amplified connecting block. Be sure the 791-44 is powered by a 12v regulated (i.e. exactly 12 volts)power supply. This has worked for me every time. I've tried other methods with no success.
Hope this helps...
Mark

I just realized that one item may cause a difference in the solution -- this bus also has a Xantech RS232IR putting data onto it, and the bus also controls a Xantech RT8 router. So it is not just the RX77 and LEDs, it is a bus running active Xantech components.

This is interesting as I have had several problems when trying to combine the two units but haven't tried the 791-44 method.

I would like to know what everyone who has experience this problem uses to overcome the issue of a two zone system i.e. Harman Kardon receivers - where the main zone is controlled by the RX77 and the second zone is an IR sensor.

If you have say about 3 common components (that can't be used with the HK IR bus system) to combine with IR.
How do you do it and still independently control each individual zone.

I have achieved this in the past for IR by using the Xantech ZC21 2 zone block.
However have had problems combining an RX77.

Thanks.

I have had problems in the past with multiple Xantech units running off a common power supply which was solved by powering each unit from a seperate wall wart. I haven't had the oportunity yet but I have been waiting to try using a single supply feeding each Xantech module through diodes in series with the power leads. It also may help with the emmiter leads on the signal lead.

There are two parts to this system. Well, more, actually.

The RX-77 part controls the components in the main downstairs system, except for the A/V receiver. This is the part of the system I am trying to integrate with the second system.

The second system runs an IR signal through a router to control either the downstairs A/V receiver or the upstairs A/V receiver, which are the same model Yamaha. Those control signals come from the RX77 via the air, going into a Xantech sensor. Again, this is the part I want to hardwire.

This second system also takes input from an RS232IR, and in addition to running the RT8 router, runs whichever Xantech volume control RAT1 is selected by the RT8, runs two CC12s, sometimes sends IR upstairs for the other volume controls up there.

Shoe, all of the stuff downstairs (except the RX77 part) is run by one 782 1 amp regulated power supply. Only IR signal and ground connect to upstairs; the upstairs has its own 782. I didn't expect CAT5 to carry enough current upstairs to run all those things.

Ernie, I was refering to even 1 location using common supplies giving me intermitant operation. It wasn't a current issue because I was just using a 789-44, dinkylink, RT-8 and 794-50 powered by a 782 PS on both occasions. Going to multiple 781 PSs cleaned up the issue both times. Same thing in installations utilizing 789-44 dinkylinks and 794-50. I switched to 791-44 blocks and avoid the 789-44 except in simple installs and I usually use RF instead of those too.

Anyone know if you can power an RT9 remotely? I'd like to put one in a location that doesn't have easy access to power, so the the only power supply would be a 782 going into the 791-44 at the front of the system. Should this work?

Sorry , I meant RT8 (typo :).

Yes, that should work, as long as the resistance of the wire between your supply and the RT8 is not so great as to lower the working voltage at the RT8.

Wire it up and see if the voltage is lower than about 11.5, or if it sags when you switch the RT8.

One way to help out the situation is to get a capacitor, say 100,000 microfarads, at about 16 working volts, and put it across the + and - terminals along with the voltage from the power supply. This will store some energy at the RT8 end, so when you use the RT8, it will take a command or two before the voltage will sag.

You will want to avoid turning all zones on at once as that will cause maximum voltage sag.

Many thanks; the remote power seems to work (it's only about a 50ft cable run, so I've got almost a full 12v).

However, the RT8's green LED isn't blinking in response to IR input. I'm feeding it with signals from an RFX6000 (Pronto RF to IR extender), plugged into the High Out of a 791-44. When I use an emitter directly off the 791-44, this works like a charm. Unfortunately the RT8 doesn't seem to recognize that there are incoming IR signals.

Any thoughts?