We have a few CTRE magnetic encoders on our robot connected to Talon SRX motor controllers. One of them is located on the intake which requires a longer cable run. No problem making some longer cables, that’s the easy part although 0.05" pitch ribbon cable is a little delicate.
The encoder signals are single ended and I doubt there’s an impedance match source/cable/load. I located a previous thread Talon SRX Magnetic Encoder Cable Issues noting 128" length caused some issues due to signal degradation.
Is there a maximum recommended length? Splice in a shielded cable? Add RC filter? What’s your experience with longer cables.
Another solution we looked at was locating the Talon SRX closer to the intake and running long power + CAN instead. How does the SRX like being so far away from the battery? It’ll have a smallish value capacitor on the front end and I’m concerned the ripple current is going to be higher that the designers anticipated because of a long power cable run. Probably of no consequence in this application because the motor won’t be heavily loaded but interesting to know.