Graupner and KG 33508, 33512 User Manual

Graupner GmbH & Co. KG

User Manual

Henriettenstraße 94 – 96
D-73230 Kirchheim/Teck
Germany
www.graupner.de

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GETTING STARTED

Thank you for purchasing the Graupner HoTT 2.4 System Please read through this entire manual before
you attempt the installation and usage of your Graupner HoTT 2.4 System!

These operating instructions are part of this product. They contains important notes to the operation and
handling. Please take this into consideration when you pass on the product to third parties. Neglect of
the operating instructions and the safety instructions lead to expiring the warranty.
Graupner constantly work on the advancement of all remote control systems; changes of the scope of deli­very in form, technology and equipment we must reserve ourselves therefore. Please have understanding
for the fact that from data and illustrations of this operating instructions no requirements can be derived.

Please keep these instructions for further reference!

1. GENERAL NOTE

When switching on or adjusting the radio control system it is essential to keep the transmitter aerial at
least 15 cm away from the receiver aerials at all times. If the transmitter aerial is too close to the receiver
aerials, the receiver will be overloaded, causing the red LED on the receiver to light up. The transmitter
responds by emitting a beep once every second; the red LED also goes out. The radio control system
is now in Fail-Safe mode.
If this should occur, simply increase the distance between the aerials until the audible warning signal
ceases, and the red LED on the transmitter lights up again; at the same time the red LED on the receiver
should go out.

2. FUNCTIONS

2.1. 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). This “binding”
procedure only needs to be carried out once for each combination of receiver and RF module. The units
supplied in the set are already bound to each other at the factory, i.e. the binding procedure described in
the following section only needs to be carried out when you wish to use an additional receiver. However,
it can also be repeated at any time if required, e.g. after changing transmitters. When binding is required,
this is the procedure:

• Switch the transmitter and receiver on.

• Locate the BIND / RANGE button on the back of the transmitter, 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 constant 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.

• 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.

2.1.1.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 is switched on fi rst is the Master receiver. Any telemetry
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 as­sign 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.

HoTT 1.0 / Oktober 2010 - EN V1.0

Getting Started Graupner HoTT 2.4 01

2.2. 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.

• Locate the BIND / RANGE button on the back of the transmitter, and press it to initiate range-check
mode. Hold the button pressed in until the transmitter starts to beep at a regular rhythm; the red and
green LEDs adjacent to the BIND / RANGE button now 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
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.

ACCESSORIES:

Order No. 33611 General Air-Module Graupner HoTT

Vario, RPM, Fuel, 2x temperature, 2x
voltage, max. current 40A, capacity,
single cell voltage 2 -6 S

Order No. 33612 Graupner HoTT Temperature Sensor

120°C, voltage sensor

Order No. 33613 Graupner HoTT Temperature Sensor

200°C, voltage sensor

Order No. 33615

Graupner HoTT RPM Optical Sensor

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!

2.3. Fail-Safe function

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 transmit­ter 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 helicopter
to “Hold”. If interference should occur, these settings will help prevent the model fl ying out of control,
possibly causing personal injury or property damage.

IMPORTANT:

The two functions “Binding” and “Range check” described above can be used regardless of the method
you last employed to program the transmitter, i.e. using the programming button or the SMART-BOX;
neither of these two options causes signifi cant changes to the settings saved in the receiver. However,

02 Getting Started Graupner HoTT 2.4

Order No. 33700 HoTT SMART BOX

Getting Started Graupner HoTT 2.4 03