User Manual
Table Of Contents

©2013 DJI Innovations. All Rights Reserved.    
 16 
The GCU Ports Description 
The following table shows the GCU channels and the TX channels connection. 
TX Channels 
GCU 
Channels 
Descriptions 
JR 
Futaba/Hitec 
AILE 
1 
ROLL 
For roll axis control (left/right). The velocity is zero if disconnected. 
ELEV 
2 
TILT 
For tilt axis control. The velocity is zero if disconnected. 
RUDD 
4 
PAN 
For pan axis control. The v is zero if disconnected. 
AUX2 
7 
MODE 
For Working Mode switch. 
2-position switch channel 
SHUT 
For  camera  shutter  control  (both  taking  picture  and  recording  video 
are available). It is off when non-connection and disconnected. 
2-position switch channel 
Or Futaba S-Bus channel 
AUX2 
When the AUX2 is connected to a 2-position switch channel, it is used 
for camera  orientation (downward  or forward)  switch in FPV  Mode 
(Reset). The camera orientation is set to forward while non-connection 
or disconnected. 
If a S-Bus receiver is used, it should be connected to the AUX2 port. 
PPM channel 
AUX3 
When the AUX3 port is connected to a 2-position switch channel, it is 
used for the Z15-5D video recording control. 
If a PPM receiver is used, it should be connected to the AUX3 port. 
The following table shows the corresponding relationship between the GCU and the S-Bus/PPM channels. 
S-Bus/PPM Channels 
GCU Channel 
1 
ROLL 
2 
TILT 
4 
PAN 
7 
MODE 
5 
SHUT 
8 
AUX1 
9 
AUX2 
6 
AUX3 










