Operating instructions

15 Manual Module M-G1 33300
mode manually, and the model should respond normally to control commands. If this does not occur
with 100% reliability, the system should not be used. Contact your local Service Department of
Graupner GmbH & Co. KG.
• Range-check mode is usually terminated manually when the user presses the BIND / RANGE but
ton, but it terminates automatically after about ninety seconds in any case. The red LED now glows
constantly again, while the green LED either glows constantly or fl ashes continuously, according to
the Country setting.
• We recommend that you check effective radio range before every fl ight. While you are carrying
out the check, simulate all the servo movements which will take place when the model is in fl ight.
The ground range must always be at least fi fty metres in order to ensure safe, reliable model con-
trol.
Note:
Range-check mode is usually terminated manually when the user presses the BIND / RANGE button,
but it terminates automatically after about ninety seconds in any case.
CAUTION:
During normal operations (i. e. when controlling a model) never press and hold the programming
button on the transmitter module!
6.3. Fail-Safe function (RX Failsafe)
In its default state (as delivered) the receiver is set to “Hold” mode, i.e. if a fail-safe situation occurs, all
the servos connected to it maintain the last position detected as valid. In this mode the red LED on the
receiver lights up when interference occurs, and the red LED on the transmitter goes out. The transmit-
ter also starts beeping about once per second as an audible warning.
You can exploit the safety potential of the fail-safe option by at least programming the throttle channel to
respond to a fail-safe situation: the throttle channel of an engine-powered model should be set to idle,
the throttle channel of an electric-powered model to “stop”, and the throttle channel of a model helicop-
ter to “Hold”. You can program the fail-safe function either in the Telemetry menu under “RX Failsafe”
(5.2.3), or on the transmitter module: repeated brief presses of the BIND / RANGE button on the trans-
mitter module cycle through the fail-safe modes (fail-safe on / off, hold-mode, or standard). Locate the
BIND / RANGE button on the back of the module, and hold it pressed in while you switch the transmitter
on. Release the button again once it is switched on.
• Fail-Safe mode: when you press the BIND / RANGE button, the transmitter beeps once; the red
and green LEDs glow constantly.
It is now possible to program positions to which the servos will move in a Fail-Safe situation; this
occurs after a “Hold” period of 0.75 seconds: move the corresponding transmitter controls (sticks,
rotary knobs, INC / DEC buttons etc.) to the desired Fail-Safe positions SIMULTANEOUSLY, then
hold the BIND / RANGE button pressed in for three to four seconds. When you release the button,
both the red and green LEDs should light up constantly, and the transmitter should not emit an au-
dible signal: the transmitter now reverts to Control mode. If this does not occur, repeat the procedu-
re.
• Hold mode (recommended for model helicopters): when you press the BIND / RANGE button,
the transmitter beeps twice; the red LED lights up constantly, and the green LED goes out (factory
default setting).
If interference occurs, all servos programmed to “Hold” remain at the last position detected by the
receiver as correct; this situation is maintained until such time as the receiver picks up a new, valid
control signal.
You can save your selection by holding the BIND / RANGE button pressed in for three to four se-
conds. When you release the button, both the red and green LEDs should light up constantly, and
the transmitter should not emit an audible signal: the transmitter now reverts to Control mode. If this
does not occur, repeat the procedure.
• Fail-Safe OFF: when you press the BIND / RANGE button, the transmitter beeps three times; the
green LED glows constantly, the red LED goes out.
You can save your selection by holding the BIND / RANGE button pressed in for three to four se-
conds. When you release the button, both the red and green LEDs should light up constantly, and
the transmitter should not emit an audible signal: the transmitter now reverts to Control mode. If this
does not occur, repeat the procedure.