GRAUPNER GR-8 HoTT User Manual
Manual
GRAUPNER/SJ GmbH. Henriettenstr.96, KG D-73230 KIRCHHEIM/TECK GERMANY
2014/06/30
English
Receiver GR-8 HoTT
No.33504
English
2
Contents
Preamble .......................................................................................................................................................3
Approved Usage ........................................................................................................................................... 3
Key to the Symbols ...................................................................................................................................... 3
Safety notes .................................................................................................................................................. 4
Box contents ................................................................................................................................................. 4
What is HoTT? .............................................................................................................................................5
Receiver Specications ............................................................................................................................... 5
Method for Installation of Receiver .............................................................................................................5
Binding and Range Test ...............................................................................................................................6
Port information ............................................................................................................................................7
GR-8 Receiver menue in the Telemetry ...................................................................................................... 8
Method for Connection of Transmission and Engine Model ....................................................................9
Firmware update ......................................................................................................................................... 10
Notice........................................................................................................................................................... 11
Environmental protection notes ............................................................................................................... 11
Manufacturer‘s declaration on behalf of GRAUPNER/SJ GmbH ........................................................... 12
Declaration of conformity .......................................................................................................................... 13
Warranty ......................................................................................................................................................14
Although the information provided in these instructions has been carefully scrutinized
for viability, no form of liability can be accepted for errors, omissions or print errors.
Graupner reserves the right to change the described hardware and software features at
any time without prior noti cation.
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innovation & technologie
Preamble
Thank you for purchasing a GR-8 HoTT 2.4GHz Receiver. Please read this manual before using the
product to ensure proper product usage. This operating manual contains warnings and cautions for
your protection and safety, and for prevention against accidents or damage to property. Keep the
manual in a place where you can easily access it. If any problem occurs during the operation of this
product, please refer to this operating manual, or make an inquiry to our retail Website mentioned
below, Graupner Retail Store or Graupner Service Centre.
Attention!
Prior to the installation and commissioning of the receiver be sure to read the
instructions completely.
!
Approved Usage
The receiver is intended exclusively for use in radio-controlled models. Any other usage is prohibited, and may result in damage to the receiver or model, and serious personal injury. We grant no
guarantee and accept no liability for any type of use outside the stipulated range.
Not suitable for children under fourteen years. This receiver is not a toy!
The receiver is also equipped with a telemetry function which is only available in combination with
a Graupner/SJ HoTT 2.4 system. If you do not own a Graupner/SJ HoTT 2.4 system, the receiver
will not work.
Please start by reading through the whole instructions before you attempt to install and operate the
receiver.
These operating instructions are an integral part of the product. They contain important notes on
operating and handling the receiver. For this reason please store the operating instructions in a safe
place, and pass them on to the new owner if you ever dispose of the product. Failure to observe the
operating instructions and safety notes invalidates the guarantee.
Here at Graupner we are constantly working on the further development of all our products; for this
reason we are obliged to reserve the right to introduce changes to the set contents in form, technology and features.
Please understand that we will not countenance claims resulting from information and illustrations
in these operating instructions.
Please store the operating instructions in a safe place for future reference!
Key to the Symbols
Caution!
This symbol alerts you to prohibited actions which must be observed at all times. Any failure
to observe the prohibited action indicated in this way may prevent the equipment working, and
endanger the safety of the operator.
Caution!
This symbol alerts you to information which must be observed at all times. Any failure to observe
the information indicated in this way may prevent the equipment working properly, and endanger
the safety of the operator.
This symbol indicates information which should always be observed in order to ensure that the
equipment operates reliably.
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Safety notes
Warning!
The operation of the receiver under the inuence of medication, alcohol, drugs, etc. is prohibited.
Caution!
Any deviation from the instructions may have an adverse effect on the function and operational
security of the receiver, and must be avoided under all circumstances.
Caution!
The operator bears full responsibility for using the receiver. The only way to guard against personal injury and property damage is to handle the equipment carefully and use it exactly as recommended.
Caution!
Not suitable for children under fourteen years.
Caution!
Protect the receiver from dust, soiling, damp and foreign bodies. Never subject the receiver to
excessive vibration, heat or cold.
Caution!
During the programming process you must bear in mind that an internal combustion engine or
electric motor could unexpectedly burst into life at any time.
Caution!
Avoid subjecting the receiver to shocks and pressure. Check the receiver regularly for damage to
the case and cables. Do not re-use a receiver which is damaged or has become wet, even after it
has dried out again.
Caution!
When deploying the cables ensure that they are not under tension, not tightly bent (kinked) or
fractured. Avoid sharp edges which could damage cable insulation.
Caution!
Ensure that all plug-in connections are rmly seated. Do not pull on the wires when disconnecting plugs and sockets.
Caution!
The receiver must not make physical contact with the model’s fuselage, hull or chassis, as this
would allow motor vibration and landing shocks to be transferred directly to it.
Caution!
It is not permissible to carry out modications of any kind to the receiver. Any changes invalidate
product approval, and you forfeit any insurance protection.
Caution!
Ensure that the equipment is working correctly and at full range before every ight. Check the
state of the batteries at regular intervals.
Note!
Ensure that all your HoTT components are loaded with the current version of the software at all
times.
Note!
Safety is no accident, and radio-controlled models are not playthings!
Box contents
1. GR-8 HoTT Receiver
2. Operating Manual
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innovation & technologie
What is HoTT?
HoTT stands for HOPPING TELEMETRY TRANSMISSION. This is a next-generation Graupner communication
technology—it prevents crossed frequencies by using 35 frequencies with optimized bidirectional HOPPING
technology, and it enables excellent transmission and reception functions as well as telemetry communications
across far distances; data such as RPM, voltage, current and warning of the product being used can be checked
in real time by using 2.4GHz frequency band.
Method for Installation of Receiver
Receiver Specications
The receiver is to be installed with a foam rubber cushion to afford protection against jarring, in aircraft models behind a strong rib and in a car or ship model in a place where it is protected against
dust and spray water. The receiver may not be mounted in direct contact with the hull or chassis as
this would allow motor vibrations and/or landing jolts to be transferred directly to the receiver. When
a receiver system is installed in a model with a combustion motor, all receiver parts should be ins-
talled so as to prevent exhaust gases and oil residues from inltrating. This especially applies to the
ON/OFF switch, which is usually built into the model’s outside skin. Position the receiver such that
connecting cables to the servos and the power supply are routed with a bit of slack
and that the receiver’s antenna is at least 5 cm away from any large metal parts or wiring other than
those proceeding from the receiver. In addition to steel, this also applies to carbon ber parts, servos, electric motors, fuel pumps, any kind of cable and similar items. Optimally the receiver should
be placed at a readily accessible location that is well away from all other equipment. Under no circumstances may a servo cable be wrapped around the antenna or routed close to it.
Ensure that cables near the antenna cannot move about during ight.
Receiver GR-8:
Operating Voltage 3,6...8,4 V
Receiver frequency band 2,400...2,4835 MHz
Modulation FHSS
Range 1000 m
Channel 4
Operating current 70 mA
Temperature range -15 ... +70 °C
Antenna length 110 mm
Size 30 x 21 x 14,3 mm
Weight 6,9 g
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