RadioLink Electronic Limited
4
Power button: Long press to turn it on or off; or press it to confirm the connection when upgrading the
firmware.
Throttle/Rudder/Aileron/Elevator Stick: The default Channel 1 to Channel 4 controls the roll, pitch, throttle
and yaw of the aircraft.
Trimmer buttons: T8S has 4 groups trimmer buttons (two for each group), which can trim roll, pitch,
throttle and yaw respectively. The trimmer buttons are used to quickly adjust the model during flight. When
debugging the model, please adjust it through SUB function in the parameter setting APP.
Three-way switch: CH7 (SWA) and CH5 (SWB) are three-way switches, which can be assigned to the
auxiliary channel through APP to control the equipment connected to this channel. (Note: If you have
purchased Radiolink RTF with a T8S transmitter, the three-way switch CH5 (SWB) controls the switching of
the flight mode by default.)
Knob switch: CH8 (VRA). This switch can be set by parameter setting APP according to your needs, and is
mostly used for
Pan/Tilt/Zoom
adjustment.
Push button: CH6 (VRB). This switch can be set by parameter setting APP according to your needs, and it
is mostly used to control camera shutter.
1.2.4 Transmitter Battery Charging
The built-in battery of T8S is 1S lithium. When the voltage is low, the green indicator will flash with a DD
warning sound. Make sure to charge the battery in time to avoid the possible damage by over discharge.
T8S charging is simple, only need an android USB data cable. It takes approximately 40 minutes to fully
charge T8S with 4 green Indicator lights on. It can be used for 5 hours when fully charged.
1.2.5 T8S Gimbals Calibration
When the transmitter power is off, set both joysticks at the central point. Then press the rudder trimmer
button (it marked as No.1 in below picture) and the power button simultaneously. When four green
indicators start flashing, it means T8S is ready to be calibrated.
Range Calibration
: Toggle both sticks (CH1-4) to the highest point/maximum and the lowest
point/minimum. Then back to the central point.
Central Point Calibration
: When the joysticks are back to the central point, press the rudder trimmer
button (with an arrow to right and marked as No.2 in below picture) once. Two short DD sounds will be
heard and the green indicator becomes steady on, meaning the stick calibration is complete.
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