For you avtec guys out there,
when interfacing a CDM1250 directly to an outpost (not using a tone remote) I have connected the four wires that I know do channel change, but for some reason I cant access channels 3, 5, 7 etc.
Am I missing a fifth channel change wire on the CDM1250, as the outpost has a fifth wire.
Thanks, Rob
P.S. Disclaimer (I am semi-binary retarded)
Avtec Outpost and CDM channel change
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jackhackett
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Re: Avtec Outpost and CDM channel change
Sounds like the first binary bit is not working. In binary, the 4 inputs are each worth a value, starting with 1 and doubling, ie:
bit 1 = 1
bit 2 = 2
bit 3 = 4
bit 4 = 8
so if you want channel 11, you would need bits 1, 2, and 4 (1 + 2 + 8 = 11).
Since you seem to be missing the odd numbered channels, the first bit would be the culprit... possibly you're using the wrong pin, the pin isn't set properly in programming, or you're not putting the proper signal on the pin.
Make sure your channel select pins are set as inputs, and active polarity (hi/low) is correct.
If the Avtec has 5 select outputs (not counting ground) you should check that you have bits 1 through 4 connected and not something like 2 through 5.
bit 1 = 1
bit 2 = 2
bit 3 = 4
bit 4 = 8
so if you want channel 11, you would need bits 1, 2, and 4 (1 + 2 + 8 = 11).
Since you seem to be missing the odd numbered channels, the first bit would be the culprit... possibly you're using the wrong pin, the pin isn't set properly in programming, or you're not putting the proper signal on the pin.
Make sure your channel select pins are set as inputs, and active polarity (hi/low) is correct.
If the Avtec has 5 select outputs (not counting ground) you should check that you have bits 1 through 4 connected and not something like 2 through 5.