3 TVs, 3 cable boxes, Harmony 900

Hi. I'm about to redo my home theater setup and am planning on getting a Harmony 900 to control everything, but before I do I want to be sure it will work for my setup. The main difficulty is that in one location I will have three TVs (two of which are identical) and three cable boxes (at least two identical and maybe all three -- for now I'm assuming they'll all be identical, and if I can get a configuration for that it will obviously work if only two are). I have three possible setups in mind, but I'm not sure of some of the limitations I'll encounter, so I'd love to hear confirmation on which of these will work (or other alternatives). Thanks in advance!


Configuration One




In the Configuration One I need only the Harmony 900 (along with the IR receiver and two mini-blasters it comes with) along with two sets of IR Precision Cables. The big question with this setup is this: Can I set it so that one cable box uses mini-blaster 1 only, one cable box uses mini-blaster 2 only, and one cable box uses the remote's RF only? It looks like I can separate signals between the two mini-blasters, but I want to be sure that 1) the signals meant for boxes 1 and 2 won't hit box 3 and 2) the signals meant for box 3 won't hit boxes 1 and 2. Of course if needed I could always "hide" boxes 1 and 2 so that they cannot physically receive the RF signal meant for box 3, but I'd still need to be sure that signals meant for 1 and 2 won't hit 3 (i.e., the remote will send those signals over IR only).


Configuration Two



In the Configuration Two I would use an extra mini-blaster (and maybe an extra precision cable). If I'm able to add an extra mini-blaster (would I need to purchase the entire RF System to get it?) and if I can then separate the signals so that each cable signal goes only to one of the three mini-blasters, then that should work. The questions are 1) can I have three mini-blasters on one IR receiver and 2) if I can, can a signal be sent to any one (exactly one) of the three 3) if so, can I purchase one mini-blaster or should I just buy the RF system?


Configuration Three




If each IR receiver can only support two mini-blasters then Configuration Two wouldn't work, so here's another option. In the Configuration Three the setup is the same as Configuration Two, except now I'm using the extra IR receiver that comes with the RF system. The question now is: with this setup, can the remote be setup to send a signal any one (exactly one) of the three mini-blasters?



Sorry for the long description, but I wanted to spell everything out as clearly as possible upfront. I'd greatly appreciate any feedback. Thanks again :-)

Note: It won't let me post URLs since I'm a new member, so I'll have to add those in to replies later. Sorry about that.

Note: I also posted this on the logitech forum, so I'll be sure to post the answers in both places in case it can help anybody else.

Thanks for the response. Based on the excerpt below, it looks like it is possible to run multiple identical devices with a Harmony remote.
Link: http://blog.logitech.com/2010/03/23/harmony-tips-and-tricks-adding-accessory-packs-to-your-harmony-900/

I think the only real difference with my setup is that I have three identical devices rather than just two, so the question is how to extend that capability.

I forgot to mention (thanks for jogging my memory!) that I looked into other remotes before and it looked like there were some that could do what I want (particularly the URC MX-980); however, as far as I could tell the software is "professional only" (not released to the general public) and I wouldn't be able to set it up or modify it myself. It looked to me like the Harmony 900 is the "best" remote that I could use as a non-professional, but if somebody has a non-Harmony solution I'd love to hear that as well. (For what it's worth, I prefer the Harmony 900 / URC MX-980 "remote style" design to something that is one big tablet-like touch screen.)

Thanks for replying again and for your detailed help. I figured that if it didn't work I could always return it so I picked up a Harmony 900 and did a little testing. (Unfortunately the extra blasters, cables, etc. weren't available.)

I wasn't able to find clear answers online ahead of time, but after looking in the box I realize I made a few mistakes. I thought the precision cables plugged into the mini-blasters, but instead they plug into the (main) blaster IN PLACE OF the mini-blasters. Also, as you mention the main blaster only has two ports. Hopefully that didn't confuse anyone too much. (I really with Logitech's pages gave more details...)

With just what comes in the Harmony 900 box, it looks like these are the ways to control each device.
1) IR from remote (that's what configuration 1 was supposed to show)
2) RF from remote to blaster, mini-blaster plugged into Port A of blaster, IR from mini-blaster to device
3) Same as 2 except for use Port B
4) RF from remote to blaster, IR from blaster to device

Of course as you mentioned for all of these care must be taken so that the IR signals only reach the desired devices. This can be mitigated by using precision cables, so that 2 (and 3) change to:

2*) RF from remote to blaster, flasher cable plugged into Port A of blaster going to device (via precision IR)

If adding blasters allows devices to be assigned to specific ports on specific blasters (I'm still not sure if that is true), then each blaster added would conceivably let you control two more identical devices.

I think with all of that I have enough information to know that this will work for me. Thanks again for taking the time to spell that all out for me. Hopefully this can help others with similar questions too :-)


Whoops! I guess when I spend too long searching for solutions online they all start to run together and I forget which one is RF and which one is IR. I made the same mistake in a couple places in that first post -- sorry for the confusion. Thanks for the correction :-)
I've reread this post a bunch of times so hopefully I didn't make the same mistake again...

EDIT: I mistakenly had 4 out of the box methods when there are only three. I think it is correct now.

I think I should have everything setup within a week and when I do I'll give all the details to help anybody who might find this thread.

For my setup it looks like the 2 assignable jacks will be sufficient, but that is definitely nice to know in case I expand in the future. Thanks :-)

So I finally got everything done.

Here's how my final setup works (essentially the same as the diagram above):
The RF reciever / main blaster has two ports on the back of it. I have a precision cable connected to each port. On the cable from port A I have one tv and one cable box, and on the cable from port B I have another TV and cable box. The final TV I'm just controlling w/ IR from the remote directly, and the final cable box gets IR from the main blaster. I have my cable boxes on three different shelves, but I still had some "IR bleeding" issues (i.e., all three boxes responding at once) -- a little electrical tape to fully cover the IR receiver area on the cable boxes using precision cables took care of that. With this setup I can control all three TVs and cable boxes independently.

For control w/ the remote I made activities such as "Control TV1" to take over a TV and its box. I used the option to leave devices on when leaving an activity, so I can switch between control of TVs by changing activities w/o them turning off. I also set it to not change any TV inputs when starting activities, so the only thing a TV does when I start an activity is turn on (unless it is already on). This way I can easily switch between them on the remote.

One other note: The Logitech Precision IR Cables come with two sets in each box. In other words, buying one box will give you two cords, each of which can connect to four devices. I didn't know this ahead of time and assumed one cable per box so I bought an extra one.

I hope this is helpful for others. If anybody has any other questions about how my setup works feel free to ask and I'll help out if I can. :-)

Good luck!

I bought them through the Logitech site. I didn't have any problems so I'd recommend going that route. As far as I could tell they are pretty hard to find outside of the Logitech site for some reason.