Connection Diagram for Standard Receiver (applies to Hobby Eagle A3 and A3-L)
If a standard receiver is being used, you just need to connect the corresponding channels to the pins AIL, ELE, RUD, MOD and GAIN using the included receiver wires. The aileron, elevator and rudder should be always connected or it could not work. The MOD is used for flight mode control, if you don't connect it the flight mode will be set to normal as the default. The GAIN is used to adjust the master gain remotely. If you don't connect it the gain will be set to 100% all the time as the default. Wiring is as shown in the figure below.
Connection Diagram for Futaba S.Bus/S.Bus 2 (applies to Hobby Eagle A3 and A3-L)
The Futaba's S.Bus/S.Bus 2 is also supported by A3. Because the S.Bus is a single-line solution all channels are transmitted via one single line you need to establish the first 6 channels in the correct order in your transmitter before use. Here we use a R7008SB receiver as an example because it supports both S.Bus and S.Bus 2. You need to change the mode for the R7008SB before using its S.Bus outputs, please refer to the manual of it.
Installation Diagram for Hobby Eagle A3 or A3-L