GRAUPNER GR-16L Operating Instructions Manual page 7

CAUTION
During normal operations (i. e. when controlling a model) never enter
the range check mode !
3. Fail-safe function
In its default state, the receiver is set to "Hold" mode. If you lose connection, all
channels hold last given command and the status LED on the receiver turn solid red.
The transmitter also repeats a single warning beep every second. You can use the fail
safe option by 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 helicopter to
"Hold". When a signal is lost the throttle channel, all channels are driven to the failsafe
position so that it could prevent the model crashing and the personal injury or property
damage.
IMPORTANT
The two functions "Binding" and "Range check" described above can be
used by the programming button or the SMART-BOX without any influence
on the setting value saved in the transmitter and the receiver. However, if
the fail safe option is used by the programming button, all the setting value
which is seen on the fail safe screen in SMART BOX, including the setting
value that could be installed by the programming button, might be reset. For
this reason, we recommend the programming by SMART BOX.
4. Range warning
Since the transmitter's output is much higher than that of the receiver, the user tends
to be hard to notice the seriousness of the situation and try to keep full control of the
model. So when the receiver signal in the down-link channel becomes too weak, the
transmitter repeats a single warning beep every second. You should fly back the model
towards the safe place until the warning signal ceases. If the beep warning does not
cease when you fly back, it is that the transmitter or receiver low voltage warning or tem-
perature warning is activated, you must land the model and cease operations without
delay in this situation.
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