Following steps 1-7 under '6.5 Configuring the Dynon Skyview' on pages 53 of the VP-X Installation Manual, I entered the VP-X license key into Skyview and configured port 1 with VP-X as the serial in device. TX counter is incrementing on the Skyview, but RX counter is not - it's zero. On the VP-X side, System Status screen shows no data is being received from the EFIS. Spent half the day checking and rechecking the wiring, but it doesn't appear to be a wiring problem - checked continuity on all 3 wires from end to end multiple times. Otherwise, Skyview and VP-X seem to be working correctly - so far.
Any suggestions on how to isolate/resolve the problem?
Any suggestions on how to isolate/resolve the problem?