I have a new HFP-20 programmer and it won't read the pulse width on my JR921 (Spektrum AR9000) 2.4 receiver. When the Measure Pulse option is select it just reads 0us. The receiver as well as the transmitter are turned on, and the receiver channel is plugged into the servo jack on the programmer. Power is getting to the programmer because it turns on when power is turned on for the receiver.

Chuck