Radio calibration dx7

HELP, i have the Pixhawk 2.4.8, a spektrum ar620 receiver an a dx7 spektrum transmitter. Receiver is wired through pixhawk with a ppm encoder, rx and tx are fully binded, but when going to radio calibration in mission planner, the green bars will not move.

I’m not sure that type of receiver outputs ppm.

A satellite spektrum Rx needs to be plugged into the SPKT/DSM port on the pixhawk 2.4.8

Also, that ar620 spektrum Rx doesn’t outputs serial dsm either.

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