User's Manual

Speed Switch: The Speed Switch limits the maximum operating speed of the vehicle by
restricting the range of the Throttle Servo. The Speed Switch has three positions:
•High: Throttle Servo moves through its full range of travel
•Medium: Throttle Servo moves through 50% of its range of travel
•Low: Throttle Servo moves through 25% of its range of travel
The High position should be used when programming a connected Electronic Speed Controller.
Release Button: The release button has a ½ second delay to prevent accidental activation. It is
also used at power-up to enter Test Mode and to select Tank Mode or Normal Mode Steering and
Throttle output. See Transmitter Modes for details.
Arm Switch: The arm switch must be in the “Armed” position for the release button to function.
The armed state is indicated by the illuminated release button. When in the “Safe” position
the release button will not function (including setup functions).
RS485: The transmitter has a DB9 connector that is used for tethered operations. When the
transmitter starts, it automatically detects the presence of an RS485 cable, and if present
automatically uses that cable instead of the radio. (See Appendix B for details on the RS485 cable
as used by the GC-205).
Transmitter Setup
The Transmitter has a test mode and two operating modes: Normal and Tank. The active mode is
set during the boot process:
1.LED Test: At power up, all 3 LEDs light for ½ second and then turn off from left to right with
a ¼ second delay after each.
2.Settings Reset: If BIND is held down, the LINK LED will flash rapidly (5 times per second). If
BIND is held for 3 seconds, the link LED is illuminated steadily for ½ second while all settings
are reset to factory defaults.
3.Mode Select: If RELEASE is held down and ARM is on, the RX LED will flash rapidly (5 times
per second) if in Normal Mode. If in Tank Mode, the TX LED will flash instead. If RELEASE is
held for 3 seconds the test procedure runs (see below). If Bind is pressed before the 3 second
countdown expires the Transmitter will switch modes (Tank or Normal) and the 3 second
countdown restarts.
4.Normal Operation: The transmitter enters operating mode.
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