User's Manual

2.3 Range-checking
The range of your Graupner/SJ HoTT 2.4 system can be checked as described in the following
instructions. We recommend that you ask a friend to help you with the procedure.
Ideally the receiver should already be bound to the transmitter. Install it in the model in its nal position.
• Switch the radio control system on, and wait until the red LED on the receiver goes out. The servo
movements can now be observed.
• Place the model on a at surface (pavement, close-mown grass, earth), and ensure that the
receiver aerials are at least 15 cm above the ground. It may be necessary to pack up the model
to achieve this for the period of the range-check.
• Hold the transmitter away from your body at hip-level. Don’t point the transmitter aerial straight at
the model; instead rotate or angle the aerial tip in such a way that it is vertical when you operate
the transmitter controls.
• Select range-check mode, as described in the transmitter instructions.
• Walk away from the model, moving the transmitter sticks. If you detect an interruption in the radio
link at any time within a distance of about 50 m, see if you can reproduce the problem.
• If your model is tted with a motor or engine, switch it on or start it, so that you can check effective
range when potential interference is present.
• Walk further away from the model to the point where full control is no longer possible.
• At this point you should manually switch off range-check mode.
The model should now respond to the controls again. If this is not 100% the case, do not use the system.
Contact the Graupner/SJ Service Centre in your locality and ask their advice.
We recommend that you carry out a range-check before every ight, simulating all the servo movements
which occur in ight. To guarantee reliable model operation, radio range must always be at least 50 m
on the ground.
2.4 INSTALLATION IN THE MODEL (AIRPLANE)
The gyro receiver must be installed straight and at right angles to aircraft longitudinal axis,
so that the rotors can work as intended, because of the accelerometer in addition also
horizontal to the longitudinal axis.
22 Manual Receiver GR-24PRO 3xG+3A+3M+Vario Graupner HoTT 2. 4
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