15
Manual Module M-G2 33302
6. FUNCTIONS
6.1. Binding
When you wish to use the Graupner HoTT 2.4 GHz receiver with a particular transmitter, the
fi
rst step
must always be to “bind” the unit to “its” Graupner HoTT 2.4 GHz RF module (transmitter). However,
the “binding” procedure is only required once for each receiver / RF module combination. Carry out the
following steps when necessary:
•
Switch the transmitter and receiver on.
•
Without Smart-Box or internal telemetry:
Locate the BIND / RANGE button on the back of the mo-
dule, and hold it pressed in while you press and hold the SET button on the receiver. Both LEDs on
the back of the transmitter now glow constantly, and the red LED on the receiver
fl
ashes. Under
normal circumstances the
fl
ashing red LED on the receiver will cease to
fl
ash and switch to a con-
stant green within about ten seconds. This indicates that the binding process is complete. You can
now release both buttons, and your transmitter / receiver combination is ready for use.
With Smart-Box or internal telemetry:
•
At the Telemetry menu “TX” go to the RX BIND line, then
press the INC + DEC buttons on the SMART-BOX simultaneously (or push rotary): the screen
changes to BINDING, displayed highlighted (black background). Hold the SET button on the recei-
ver pressed. If the
fl
ashing red LED on the receiver goes out within about ten seconds, the green
LED glows constantly then the binding procedure has been completed successfully.
• However, if the red LED on the receiver continues to
fl
ash for longer than ten seconds, then the
binding process has failed. If this should occur, repeat the whole procedure.
6.1.1. Binding multiple receivers in one model
If required, it is also possible to bind multiple receivers to the transmitter for a particular model. The
fi
rst
step is to bind each receiver individually using the procedure already described.
When the system is in use, the receiver which was switched on
fi
rst, is the Master receiver. Any teleme-
try sensors installed in the model must be connected to this unit, as only the Master receiver transmits
sensor data using the downlink channel. The second and all further receivers operate in parallel with the
Master receiver but in Slave mode, with the downlink channel switched off.
The control functions can also be distributed amongst multiple receivers; this is carried out using the
Channel Mapping function of the SMART-BOX (Order No. 33700). In the same way it is possible to as-
sign one control function to multiple receiver outputs; a typical example would be the use of two servos
for each aileron instead of only one, etc.
6.2. Range checking
The method of checking the effective range of the Graupner HoTT 2.4 GHz system is described below.
We recommend that you ask a friend to help you with this procedure.
After binding the receiver to your transmitter, switch the transmitter and the receiver on, and wait until
the green LED on the receiver lights up.
•
Install the bound receiver in the model in its
fi
nal intended position.
•
Switch the RC system on, so that you can observe the movement of the servos.
• Set up the model on a
fl
at surface (pavement, closely mown grass or earth), and ensure that the
receiver aerials are located at least
fi
fteen cm above the ground. This may require a support for the
model.
• Hold the transmitter at hip-height, away from your body, but do not point the aerial directly at the
model; instead turn and / or angle the aerial tip so that it stands vertical, and keep it there for the
duration of the range check.
• Start the range check mode in the Telemetry menu; the transmitter starts beeping evenly, and the
red and green LEDs next to the BIND / RANGE button
fl
ash alternately.
• Walk away from the model, operating the transmitter sticks constantly. If you detect an interruption
in the link within a range of about
fi
fty metres, stand still and attempt to reproduce it.
• If the model is
fi
tted with a motor, switch it on in order to check whether the power system is gene-
rating
interference.
• Continue to walk away from the model until you reach the point where perfect control is no longer
possible.
• Now press the BIND / RANGE button on the transmitter once more; this terminates range-check
