Originally Posted by rodhead
How exactly can these codes be programmed into a Harmony remote?
From other reading I've discovered that the Yamaha maintains a 12v level on its trigger outs while it is on. My amps need a pulse to turn them on and another pulse to turn them off. So I was planning to send an OFF signal after the Yamaha comes on (to simulate a pulse) and an ON signal just before switching off the Yamaha to create another pulse.
I've learned more about the Triggers on the RX-V3800 and am posting the info for future reference. TitanFan has noted that the commands are:
Originally Posted by TitanFan
You will need to program the following remote codes into your universal remote:
DC1 Trigger, Zone 1 ON - Custom Code=7E, Data Code=73
DC1 Trigger, Zone 1 OFF - Custom Code=7E, Data Code=74
DC2 Trigger, Zone 1 ON - Custom Code=7E, Data Code=3E
DC2 Trigger, Zone 1 OFF - Custom Code=7E, Data Code=3F
Here's how Trigger 1 works:
When the receiver is first switched on it sets Trigger 1 High, maintaining a 12V voltage while the receiver is on. The voltage drops to 0 when the receiver is turned off. However, if during operation Trigger 1 is set Low using a remote control, then when the receiver is next switched on, Trigger 1 will remain Low. Apparently the state of the trigger at shutoff is reproduced when the receiver is next switched on.
I experimented with Trigger 1 only. I expect Trigger 2 behaves the same way.
I used tools from remotecentral.com (mkhex, hex2ccf, decodeIR etc.) to program them into a Radio Shack remote connected to a PC and then "learned" them into the Harmony remote.
In the Harmony remote I left the receiver 's PowerOn command unchanged. I changed PowerOff to use the sequence Trigger 1 Low, Trigger 1 High, PowerOff. Since my amps require a low to high transition for both turn on and turn off, they now remain in sync with the receiver.