On 08/13/04 12:53, Mr_E said...
but because this alterings process goes slowely
it also might happen that the IR-receiver gets
used to the altered signal and still works, even
if the frequency of the altered remote has droped
to 37 KHz.
However if you try to use a second remote who
does send a correct 40 KHz signal then the TV
might not work on the 40 KHz signal because the
IR-eye is used to receive a 37 KHz instead of
40 KHZ
Your other posts are so consistently knowledgeable that I'm almost tempted to believe the above. But it's quite far in contradiction to my understanding of how IR receivers work. I'd suggest looking for a better theory for why 0195 doesn't work and what might be done about it.
With the Amstrads you can solve this problem by
disconecting the powercable for 10 minutes, then
connect and Power On the receiver and use the
new (correct) remote and the IR-eye will automaticly
adjust to the new & correct IR-signal.
That's a little less far fetched. I know that some IR protocols are designed in units of some input frequency but without specifying the frequency exactly, so that different remotes may use different input frequencies. I also know that on other IR characteristics a few devices have been designed to allow more of a choice when first plugged in than they normally allow and to lock into the characteristic of the first signal accepted (but not drift with it over time while still plugged in). I don't know of examples where the characteristic handled that way is frequency, but it wouldn't surprise me.
Anyway, it seems quite a leap from 0195 didn't work to this frequency theory.
