Assan GA-250 Manual

GA250 Micro Gyro User Manual
GA250 is a high-performance advanced AVCS MEMS gyro, specially designed and optimized for
your RC helicopters. It's with Very small size and Very light weight. It's easy in setting, practical
functions, wide scope of applicable servos and superior head-lock performance, even for your hard 3D
application.
Technical Features
Sensor: MEMS
²
System control: AVCS (Angular Vector Control System).
²
Dual-gain function: two operational modes can be selected through the transmitter: AVCS mode
²
and Rate mode.
Compatible with all tail servos, include 1520us, 760us and 960us.
²
Technical Parameters
1. Operating voltage: DC 3.0 ~ 9.0V
2. Operating current: 20mA(At 5.0V)
3. Operating temperature: -15℃ ~ 60℃
4. Dimensions: 21 × 21 × 10mm
5. Weight: 8.0g(Include Connectors and Wires)
Components Functions
Status LED
GA-250 Micro Gyro Manual
V4.1
Gain Channel Plug(Red)
Tail Channel Plug (Black)
Tail Servo Joint
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Status Light
Status light
Blue Fast Flashing
Steady Blue Light
Operating Mode
Blue 2 Flashing
Light Down
Red Slow Flashing
Error Codes
Blue Slow Flashing
Setting Up Your Gyro For The First Time
Follow the steps below in the specified order to successfully deploy your gyro.
◆ Fix the gyro on your model: please stick the gyro to the stable place of the helicopter with the
double-sided adhesive tape. If there is a high vibration environment, please plus a steel plate to
help to reduce the influence.
◆ Connect the gyro to the receiver, don't connect the tail servo to the gyro at this time.
Ensure that the transmitter trims and sub-trims are set to zero and that collective pitch to tail
◆
pitch mixing is disabled.
Power on your Rx and gyro.
◆
◆ Select the correct servo type as describe in the Servo Type Selection section of this guide.
◆ Power off your gyro.
Connect the servo to the gyro then power on it.
◆
◆ Follow the manual to set the gyro direction, high servo endpoint and low servo endpoint.
◆ Quit setting and back to stand by way.
Adjust gyro gain via your transmitter
◆
◆ Confirm all things and ready to fly.
Servo Type Selection
GA-250 was designed to work with all modern tail servos. There have some different type servos,
and when use wrong setting, you will broken your servo or not working correct. so, please do this job in
the first step.
Here is the way to access the servo configuration mode. Power on your Gyro and when it Blue
flashing, toggling the gain switch three or more times quickly in your radio. You have Servo Type Setting
mode now. By pull the rudder stick left or right, you got different type. The number and the colors of
flashed indicates the currently selected servo type.
GA-250 Micro Gyro Manual
Describe
Gyro Calibrating
AVCS Mode
AVCS Mode, Rudder stick not centered
Rate Mode
Gyro not receiving gain signal. Please checking the
wire and plug
Gyro not receiving rudder signal. Please checking
the wire and plug
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