(23-09-2015, 09:39 AM)ppppenguin Wrote: When I worked for Michael Cox Electronics ISTR we had special pots made for our faders with only 90 degrees of travel. The fader handle was connected directly to the pot shaft.
Assuming video isn't going directly through the pot which is usually not a good idea the easiest approach is simple mechanics and fix it in the electronics. In an analogue environment that simplly an opamp, a few resistors and a couple of preset posts to get the required voltage swing. In a digital environment it's probably easier to have a bit more resolution on the ADC and calibrate the pot digitally.
I think I disposed of all my Cox surplus assemblies some years ago but if you're interested I'll have a quick look for some faders.
Jeffrey,
You may recall that we have discussed this subject before and you have already looked to see if you still had any 'Cox' faders but didn't find any. Thanks for the offer, anyway.
No, the video isn't going directly through the pot!
I know you think the answer is to 'fix' the problem in the electronics but I would like to have a go at 'fixing' it with mechanics, anyway.
I didn't know Cox had special pots made for the job. Did they have a shorter track or were they just limited to 90 degrees rotation with a standard length track?
------------------------------------------------------------------------------------------------
Joe,
Yes, that is the sort of thing I'm after but as you say the belt would be much too long and I would prefer a narrower belt.
Regards,
Dave.
