3G-A Instruction Manual
Thanks for choosing Bigaole 3G-A Unit.3G-A Unit is a small
and light 3-axis gyro with high performance.3G-A supports 3
types of planes,the normal one,flying wing and V-Tail.With
latest MEMS technology ,3G-A unit provides excellent
stability,flexibility and reliability and make the flight follow the
pilots' operation more exactly through auto-correcting for
aileron,elevator and rudder.With 3G-A unit,a small bird could fly
as better as a big plane.
1.Specification and Furetures
Specification
Dimensions:
Weight:
Operating voltage:
Operating current:
Maximal angular velocity:
Servo compatibility:
1.52ms analog servo/1.52ms digital servo
Radio compatibility:
Operating Temperature:
Features:
Easy switch within AVCS mode,Normal mode and Gyro Off mode
Compact,light,could be used in normal airplane,flying wing and
V-tail,with easy switch change.
Excellently optimized for 3D flight without undermining stability.
Easy set-up,separated adjustment of gain for aileron,elevator and
rudder.
2.Function and connection.
Signal Input
Signal Output
AILE IN
Signal input for Aileron
AILE OUT
Signal output for Aileron
ELE
Signal input for Elevator
ELEV OUT
Signal output for Elevator
RUD
Signal input for Rudder
RUDD OUT Signal output for Rudder
SW
Locking mode switch
Gyro Gain Adjustment Knob
ELE
Gain Adjustment for Elevator
AIL
Gain Adjustment for Aileron
RUD
Gain Adjustment for Rudder
Gain Adjustment for Aileron
Signal input for Elevator
Signal input for Rudder
Gain Adjustment for Elevator
Locking mode switch
Gain Adjustment for Rudder
Model Selection
S1/S2/S3 for Corresponding Model
S1
S2
Setting
0
0
Normal
1
0
Airplane
Flying
0
1
Wing(delta)
V-Tail
0
0
AILE OUT
1
ELEV OUT
2
22mm*31mm
RUDD OUT
3
7.5g(with cables)
DC 3.5V-9V
20ma
800 degrees/sec
PPM/PCM/2.4G
-15℃--60℃
Flying Wing(delta)
3.LED Status
Blue flashes rapidly
Initializ
for 3 secs after
ation
powering on
After initialization,
the blue LED will flash
some times
Fast circular flashing
of red LED after
initialization
Working
Blue LED steady on
Status
Red LED steady on
Both LEDs Extinguished
Entering into Setting
Setting
Signal input for Aileron
Mode,the Red LED
Mode
Signal output for Rudder
flashs slowly
Signal output for Elevator
Signal output for Aileron
S3
AIL OUT
ELEV OUT RUDD OUT
0
-
-
-
0
AIL Servo
ELE servo
RUD servo
0
Left wing
Right
RUD servo
servo
wing
servo
1
AIL servo
Left wing
Right wing
servo
servo
Normal
Airplane
V-Tail
Initialization is normal,please don't move
the plane
Flash one time for normal model,two times for
flying wing(delta) and three times for
V-Tail
Initialization failed
Normal Mode
AVCS Mode
Gyro Off
Signal of receiver undetected
4、Installation of 3G-A
4.1 The 3G-A unit must be installed in a flat and stable platform close to
the center of gravity in your plane,the connecting method refers to the
following diagram:(diagram1)
Side View
Double sided
tape
Airplane
diagram1
4.2The 3G-A unit must be installed towards forward in a level platform as
showing in diagram2
Top View
Direction of forward flight
The center
of the fuselage
diagram2
Transmitter Setting
Turn on the transmitter and create a new model,set the trims and
sub-trims of all channels to zero,making sure that all mix-function are off.
Gain Adjustment for Aileron
Signal input for Elevator
Signal input for Rudder
Gain Adjustment for Elevator
Locking mode switch
Gain Adjustment for Rudder
5.Gain Adjust
a.trimming potentiometers AIL,ELE and RUD correspond to the gain
adjustment for those three channels,clockwise to increase and
anti-clockwise to reduce.
b.Gyro Compensation Direction Verification
◆ Connect the gyro,receiver and servo correctly;
◆Choose correct model for your airplane by dialing S1,S2 and S3;
◆Pick up the aircraft around the pitch axis, the roll axis and the yaw axis
to check if the direction of movement of the rudder(control surface) is
correct,otherwise enter into Setting Mode to adjust the compensation
direction of gyro.
◆Move the sticks of aileron,elevator and rudder separately,to see if the
moving direction of rudder(control surface) is correct,otherwise adjust the
normal/reverse of corresponding channel on your transmitter.
Signal input for Aileron
Signal output for Rudder
Signal output for Elevator
Signal output for Aileron
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