Hi, I have a motor with a diffential optical encoder (A and B outputs), which is configured as a 1000 count-per-revolution device. I really want this thing to be a 250 CPR device...so rather than replace the encoder, I figure there must be an easy way to divide the pulses coming out of the encoder.
It's been years since I've played around with this stuff...so is it as simple as piping the A and B outputs of the encoder into two separate 4024 ICs, and then picking off Q2 of each, as the new output?
Also, the encoder I have says it is a "line driver" output. Does that mean it is 5V, but can sink more current than typical TTL? If so, I think I'm okay if I just put my 4024s within a few inches of the motor control, correct?
Last stupid question: If the output signal from one channel of the encoder looks like this:
____|-|_________|-|__|-|__|-|________________|-|____|-|___|-|____|-|_____
Does the output of Q2 on the 4024 look like this?:
__________________________|-|____________________________________|-|_____
In other words, is Q2 only transmitting every 4th pulse? That's exactly what I am looking for, since I want to be able to tell the motor control software that the shaft is in the spot that it would be in, if the encoder were 250 CPR instead of 1000 CPR.
Thanks for your patience & help.
-Randy