I had been using a TSU2000 to send IR X10 signals without any problem...now with the TSU7500 I find that I need to hold the button down longer to get the X10 command to fire (eg, I need to hold the "light off" touchscreen button down for about 1 sec before the light turns off.) I tried increasing the duration of the X10 IR code but that doesn't seem to make a difference--I still need to physically keep the button pressed. From the indicator on the X10/IR module, it looks like there's a short IR burst, followed by the longer burst & it is this longer burst that finally triggers the X10 action.

Is this something that the IR duration value should fix?
Why would the 7500 act differently than the 2000?

bump

I would give my X10 codes a try. If they work for my TSU7000 I don't see how they won't work for the TSU7500. The device in my PCF which contains the IR codes is called, "Pronto Signals (X10 IR543 / RF / ID0)". It can be found under the "Pronto Signals" section of my file. To download my PCF just hit up the link below in my signature area.