[Brian Selle]

We are having an issue with a USDigital S4 encoder... when the A channel is plugged into the DSC DIO port 1 and the B channel plugged into port 2 it properly provides an output using getRaw() when the DS is disabled. As soon as the DS is enabled, the output count oscillates between the last disabled value and last disabled value + 1. If we plug the same encoder into ports 9/10, 11/12, or 13/14 it works fine both disabled and enabled.

I checked the wiring twice for both continuity between ends and the proper pin order. The voltage at the +/gnd pins is 5v for all ports when the DS is both disabled and enabled.

Any ideas what might be going on?