GRAUPNER GR-12 User manual

EN
No. 33506, 33508, 33512 and 33516
6, 8, 12 and 16 channel 2.4 GHz HoTT receiver
GR-12, GR-16, GR-24 and GR-32 HoTT
Manual
Copyright © Graupner/SJ GmbH

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Table of content
Introduction ......................................................................................4
Service centre ...................................................................................4
Intended use .....................................................................................5
Target group....................................................................................5
Package content................................................................................5
Technical data ...................................................................................6
GR-12 ..............................................................................................6
GR-16 ..............................................................................................6
GR-24 ..............................................................................................7
GR-32 ..............................................................................................7
Connection table ............................................................................7
Symbol description...........................................................................8
Safety notes ......................................................................................8
For your safety by handling the transmitter and the receiver.......9
For your safety by handling the batteries ......................................9
Installation ......................................................................................10
Connections ....................................................................................10
Power supply.................................................................................10
Binding.............................................................................................11
Receiver reset ...............................................................................12
Setting and display of the receiver settings..................................13
Special features of the GR-12 HoTT receiver ...............................13
Special features of the GR-16 HoTT receiver ...............................15
Special features of the GR-24 and GR-32 HoTT receiver .............17
Firmware update ............................................................................21
SIMPLIFIED DECLARATION OF CONFORMITY................................22
Manufacturer................................................................................22
Notes on environmental protection..............................................23
Care and maintenance ...................................................................23
Warranty conditions.......................................................................23

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Introduction
Thank you very much for purchasing the Graupner receiver GR-12,
GR-16, GR-24 or GR-32 HoTT.
Read this manual carefully to achieve the best results with your HoTT
system and first of all to safely control your models. If you experience
any trouble during operation, take the instructions to help or ask
your dealer or Graupner Service Centre.
Due to technical changes, the information may be changed in this
manual without prior notice. Be always updated by checking period-
ically on our website, www.graupner.de to be always uptodate with
the products and firmwares.
This product complies with national and European legal require-
ments.
To maintain this condition and to ensure safe operation, you must
read and follow this user manual and all the safety notes before
using the product and you have to respect those notes also for future
use!
Note
This manual is part of that product. It contains important informa-
tion concerning operation and handling. Keep these instructions for
future reference and give it to third person in case you gave the
product.
Service centre
Graupner Central Service
Graupner/SJ GmbH
Henriettenstraße 96
D-73230 Kirchheim/Teck
Servicehotline

(+49) (0)7021/722-130
Monday- Thursday:
9:15 am- 4:00 pm
Friday:
9:15 am- 1:00 pm
[e-mail]
Graupner USA
3941 Park Dr Suite 20-571
El Dorado Hills, CA 95762
Website: www.graupnerusa.com
Phone: [phone]
Email:[e-mail]
Graupner in Internet For the service centers outside Germany please refer to our web site
www.graupner.de.

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Intended use
The receiver only be used for the purpose specified by the manu-
facturer for operation of remote control models without passengers.
Any other type of use is impermissible and may damage the system
and cause significant property damage and/or personal injury. No
warranty or liability is therefore offered for any improper use not
covered by these provisions.
In addition, it is explicitly pointed out that you must inform yourself
about the laws and regulations applicable at your respective starting
point before starting the remote control operation. Such conditions
may differ from state to state, but this must be followed in every
case.
Note
Read through this entire manual before you attempt to install or use
the transmitter.
Target group
The item is not a toy. It is not suitable for children under 14. The
installation and operation of the receiver must be performed by
experienced modellers. If you do not have sufficient knowledge
about dealing with radio-controlled models, please contact an expe-
rienced modeler or a model club.
Package content
• Receiver according to your selection
• Manual

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Technical data
GR-12
Antenna 1 x wire 145 mm
of which Antenna 30 mm
Operating voltage (2.5) 3.6 ... 8.4 V
Frequency range 2400 ... 2483.5 MHz
Modulation 2.4 GHz FHSS
Number of controls 6
Current consump-
tion approx. 70 mAh
Temperature range -15 … +70°C
Dimensions approx. 36 x 21 x 10 mm
Weight approx. 7 g
GR-16
Antenna 2x cable 145 mm,
of which last 30 mm active
Operating voltage (2.5) 3.6 ... 8.4 V
Frequency range 2400 ... 2483.5 MHz
Modulation 2.4 GHz FHSS
Number of controls 8
Current consump-
tion approx. 70 mAh
Temperature range -15 … +70°C
Dimensions approx. 46 x 21 x 14 mm
Weight approx. 12 g

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GR-24
Antenna 2x cable 145 mm,
of which last 30 mm active
Operating voltage (2.5) 3.6 ... 8.4 V
Frequency range 2400 ... 2483.5 MHz
Modulation 2.4 GHz FHSS
Number of controls 12
Current consump-
tion approx. 70 mAh
Temperature range -15 … +70°C
Dimensions approx. 46 x 31 x 14 mm
Weight approx. 16 g
GR-32
Antenna 2x cable 145 mm,
of which last 30 mm active
Operating voltage (2.5) 3.6 ... 8.4 V
Frequency range 2400 ... 2483.5 MHz
Modulation 2.4 GHz FHSS
Number of controls 16
Current consump-
tion approx. 140 mAh
Temperature range -15 … +70°C
Dimensions approx. 63 x 30 x 14 mm
Weight approx. 24 g
Connection table
Updates
and
telemetry
SUMDIN CH OUTPUT
TYPE
(Sum signal
etc.)
Optional
voltage
measure-
ment
GR-12 CH5 – CH6 CH6
GR-16 T CH7 CH8 CH6
GR-24 T CH7 CH8 –
GR-32 T CH7 S –

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Symbol description
Always observe the information indicated by these warning signs.
Particularly those which are additionally marked with the words
CAUTION or WARNING.
!
The signal word WARNING indicates the potential for serious injury,
the signal word CAUTION indicates possibility of lighter injuries.
The signal word Note indicates potential malfunctions.
Attention indicates potential damages to objects.
Safety notes
!
These safety instructions are intended not only to protect the prod-
uct, but also for your own and other people’s safety. Therefore please
read this section very carefully before using the product!
• Do not leave the packaging material lying around, this could be a
dangerous toy for children.
• Persons, including children, with reduced physical, sensory or
mental capabilities, or lack of experience or knowledge, or not
capable to use safely the receiver must not use the receiver with-
out supervision or instruction by a responsible person.
• Operation and use of radio-controlled models needs to be learnt!
If you have never driven such a model, then start extra carefully
and make sure to be familiar with the reactions of the model to
the remote control commands. Proceed responsibly.
• First, always perform a range and function test on the ground (to
do so, hold your model tight), before you use your model. Repeat
the test with running motor and with short throttle bursts.
• Only use the components and spare parts that we recommend.
Always use matching, original Graupner plug-in connections of
the same design and material.
• Make sure that all of the plug-in connections are tight. When dis-
connecting the plug-in connections, do not pull the cables.
• Protect the receiver from dust, dirt, moisture and foreign parts.
It must be protected from vibration as well as excessive heat or
cold. The models may only be operated remotely in normal out-
side temperatures such as from-10°C to +55°C.
• Always use all your HoTT components only with the latest firm-
ware version.
• If you have questions which cannot be answered by the operat-
ing manual, please contact us or another expert in the field.

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For your safety by handling the transmitter and the receiver
!
WARNING
Also while programming the transmitter, make sure that a con-
nected motor cannot accidentally start. Disconnect the fuel sup-
ply or drive battery beforehand.
!
CAUTION
Avoid every kind of short-circuit in all sockets of the transmitter!
Risk of fire! Use only the suitable connectors. In no case the elec-
tronic component of the transmitter or of the receiver may be
changed or modified. Due to licensing reasons, any reconstruction
and/or modification of the product is prohibited.
Note
During transport protect the model and the transmitter from dam-
ages.
For your safety by handling the batteries
!
CAUTION
• Protect the batteries from dust, dirt, moisture, heat and vibra-
tions. Only use in dry locations.
• Do not use any damaged battery.
• Batteries may not be heated, burned, short-circuited.
• If handled improperly, there is a danger of fire, explosion, irri-
tation and burns.
• Leaked electrolyte is caustic and should not be touched or
come into contact with your eyes. In case of emergency, rinse
with a large quantity of water and consult a Med. Doctor.
• Stock the batteries in dry and fresh conditions.
• Dispose of the battery in the proper disposal centers.

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Installation
The receiver must be protected against dust, exhaust gases, splash
water, etc. in the model. When you install your receiver, make sure
that it is not excessively airtight to prevent it from overheating during
operation.
Servo cables may not be wound around antennas or run next to
them. Make sure that the cables cannot shift to lie directly adjacent
to antennas during flight.
In the case of carbon fibre fuselage, at least the last 35 mm of the
antennas shall be routed from the fuselage.
Connections
Connect the devices that have to be connected to the receiver to the
row of sockets on one end of the receiver. The servo connections of
the Graupner-HoTT receiver are numbered.
The polarity of the plug-in system cannot be reversed. Do not apply
force.
Note
For the GR-12 HoTT receiver, insert the connectors with the brown
or black cable upwards.
Power supply
For the battery connection are designated the ports provided with
an additional "B". In principle, however, you can connect a battery
to any free socket. By V- or Y-cable also with any remote control com-
ponent. We recommend that you connect the power supply to the
socket(s) close to the servos already connected to the receiver. If you
wish to connect multiple separate batteries, the batteries must be
of the same nominal voltage and capacity. Never connect different
battery types or batteries with strongly different charges since this
can cause an effect similar to a short circuit. In such cases for safety
reasons, insert voltage stabilizing elements such as PRX-5A (No.
4136) receiver power supplies between the batteries and receiver.

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Attention
When selecting and connecting a power supply, be aware that
although the operating range of the receiver ranges from 3.6 to 8.4
V. However, practically all of the previously marketed servos, speed
controllers, gyros, etc. as well as many which are offered today have
a permissible operating voltage range of 4.8 to 6 V.
Binding
To establish a connection with the transmitter, the Graupner HoTT
receiver must first be "bound" to at least one model memory in "its"
Graupner HoTT transmitter. This process is generally called "bind-
ing".
Binding step-by-step
1. Prepare the transmitter to be bound according to its instructions
for binding.
2. Switch the receiver power supply on.
ശThe LED of the GR-12 HoTT receiver remains dark.
ശThe LED of the GR-16 HoTT, GR-24 HoTT or GR-32 HoTT
receiver blinks in red with a slow rhythm.
3. Push and hold for about three seconds the SET button on the
receiver.
ശThe LED of the GR-12 HoTT receiver remains still dark.
ശAfter this time has elapsed, the LED of a GR-16 HoTT, GR-24
HoTT or GR-32 HoTT flashes red and green simultaneously
for a further approx. three seconds. During this time, the
related receiver is in bind mode.
4. Start the transmitter-side binding according to the instructions of
the transmitter.
5. If the LED of the GR-12 HoTT, GR-16 HoTT, GR-24 HoTT or GR-32
HoTT receiver starts to light constantly green within approxi-
mately three seconds, the binding process has been completed
successfully.
Your transmitter/receiver combination is ready for operation.
If the LED of a GR-12 HoTT remains dark or the LED of a GR-16
HoTT, GR-24 HoTT or GR-32 HoTT receiver still blinks red in a
slow rhythm, the "binding" was unsuccessful. Change the posi-
tions of the associated antennas and try the entire procedure
again.

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Receiver reset
To reset the receiver, press and hold its SET button while turning on
the power to the receiver:
If the reset was triggered with the transmitter switched off or with
an unbound receiver, the LED of a receiver GR-12 HoTT lights up con-
stantly green for about 3 seconds or the red and green LEDs of a
receiver GR-16 HoTT, GR-24 HoTT or GR-32 HoTT flash 4x. Release
the button once the LEDs go dark.
If the reset is performed with a not bound receiver, you can then
start a binding process at any time.
If a reset has already been carried out on an already-connected
receiver and the associated model memory is active in the
switched-on transmitter, then the green LED of a receiver GR-12
HoTT, GR-16 HoTT, GR-24 HoTT or GR-32 HoTT should again be con-
stantly lit and thus signal a correct connection to the transmitter.
Otherwise the process has to be repeated.
Notes
• Through a RESET ALL of the settings in the receiver are brought
to the factory settings with the exception of the HoTT synchro-
nization information!
• If a reset is performed accidentally, all of these settings that
were made using the "Telemetry" menu in the receiver should
be restored.
• Resetting is particularly recommendable when you want to
switch a receiver to a different model. This makes it easy to keep
settings which do not match from being transferred.

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Setting and display of the receiver settings
The receiver-side menus can be viewed and sometimes changed
using a suitable HoTT transmitter or the SMART-BOX. You can find
out how to open the menus of a receiver in the "Telemetry" section
of the corresponding manual as well as a detailed description of the
receiver menus on the respective product page at www.graupner.
de on the Internet.
Special features of the GR-12 HoTT receiver
Connection 5
To the "– + 5 T" marked port it is possible to connect not only RC
components but also telemetry modules. Accordingly, select in the
line "5CH FUNCTION" of the page "RX CURVE" of the telemetry menu
"SERVO" or "SENSOR". Carry out the changeover as described in the
instructions for the transmitter or the SMART-BOX.
Connection 6
Depending on the settings in the "CH OUTPUT TYPE" line of the "RX
SERVO TEST" page of the telemetry menu, the output 6 can be used
for different scopes. Carry out the changeover as described in the
instructions for the transmitter or the SMART-BOX.
By setting ...
• ONCE or SAME
to connect a servo, ESC, Gyro, etc...
ശONCE
The servo connections of the receiver are actuated sequen-
tially. The receiver power supply is less stressed.
ശSAME
The servo connections of the receiver are actuated in a 4 pcs
block synchronic. The simultaneous start-up of up to four ser-
vos has a noticeably higher load on the receiver power sup-
ply.
• SUMO, SUMI, SUMD, SUMD3 or SBUS
to connect a sum signal cable
ശSUMO
PPM modulated sum signal “OUT“ of the control channel 04
to max. 16.
ശSUMI
Sum signal "IN" in case of satellite receiver
TELEMETRY
SETTING & DATA VIEW
SENSOR
RF STATUS DISPLAY
SELECT ANNOUNCE
RX DATA ON
ALARM SETTING
RX CURVE V7.07
TYPE : B
CURVE1 CH : 02
TYPE : B
CURVE2 CH : 03
TYPE : B
CURVE3 CH : 04
5CH FUNCTION:SERVO
RX SERVO TESTV7.07
ALL–MIN : 1000µsec
ALL–MAX : 2000µsec
ALARM VOLT : 3.8V
TEST : STOP
ALARM TEMP–:–10°C
ALARM TEMP+: 55°C
CH OUTPUT TYPE:ONCE

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ശSUMD
Digital sum signal of the control channel 04 to max. 16.
HD: Hold the last servo position in case of Fail-Safe
FS: Moving to the programmed positions in case of Fail-Safe
OF: (OFF) switch-off of the SUMD signal in case of Fail-Safe
ശSUMD3
Digital sum signal adapted to the transmitter mz-32 HoTT for
the transmission of 32 control channels including their digital
switches.
ശSBUS
Digital sum signal in SBUS format.
• BATT V
After switching as described before, a DC voltage off max. 25,5 V
can be displayed instead of the receiver voltage. This way it is
possible to monitor the main battery voltage without using exter-
nal sensors. The ESCs S3082 and S3083 have this switch already
included.
s + –
50 mm
100nF
2k7Ω
22kΩ
max. 25,5 V =
100 mm
–
+
Attention
Never connect a power supply with an output voltage higher than
8,4 V directly to a connection port of the receiver! The receiver and
all connected devices would be immediately destroyed.

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Special features of the GR-16 HoTT receiver
Connection 6
Depending on the settings in the "6CH FUNCTION" line of the "RX
DATAVIEW" page of the telemetry menu, the output 6 can be used
to connect RC components or a circuit for voltage measurement.
Carry out the changeover as described in the instructions for the
transmitter or the SMART-BOX.
• SERVO
The connection 6 is suitable for the operation of RC components.
• BATT V
After switching as described before, a DC voltage off max. 25,5 V
can be displayed instead of the receiver voltage. This way it is
possible to monitor the main battery voltage without using exter-
nal sensors. The ESCs S3082 and S3083 have this switch already
included.
s + –
50 mm
100nF
2k7Ω
22kΩ
max. 25,5 V =
100 mm
–
+
Attention
Never connect a power supply with an output voltage higher than
8,4 V directly to a connection port of the receiver! The receiver and
all connected devices would be immediately destroyed.
Connection 7
• SERVO
Input 7 is suitable for operating RC components.
• SUMDIN
Port 7 is suitable as input to a SUMD signal provided by receivers
GR-16, GR-24 or GR-32.
ശIf a GR-16, GR-24, GR-32 receiver is set to „SUMD“, as
described below under „Input 8“ (GR-16 and GR-24) or
„Input S“ (GR-32), or any combination of these combined
with a receiver set to „SUMDIN“, creates a simple satellite
connection with the receiver set to SUMDIN as the primary
receiver.
ശIf two of these receivers are set on SUMDIN as well as on
SUMD and connected crosswise with two satellite cables, a
reciprocal satellite connection is created:
RX DATAVIEW V7.07
S–STR100% R–TEM.+28°C
L PACK TIME 00010msec
R-VOLT :05.0V
L.R-VOLT:04.5V
S–QUA100%S–dBM–030dBM
6CH FUNCTION:SERVO
RX CURVE V7.07
TYPE : A
CURVE1 CH : 02
TYPE : A
CURVE2 CH : 03
TYPE : B
CURVE3 CH : 04
7CH FUNCTION:SERVO

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SUMD SUMDIN
GR-16 HoTT and GR-24 HoTT CH8 CH7
GR-32 HoTT S CH7
Connection 8
CH OUTPUT TYPE
Depending on the settings in the "CH OUTPUT TYPE" line of the "RX
SERVO TEST" page of the telemetry menu, the output 8 can be used
for different scopes. Carry out the changeover as described in the
instructions for the transmitter or the SMART-BOX.
By setting ...
• ONCE or SAME
to connect a servo, ESC, Gyro, etc...
ശONCE
The servo connections of the receiver are actuated sequen-
tially. The receiver power supply is less stressed.
ശSAME
The servo connections of the receiver are actuated in a 4 pcs
block synchronic. The simultaneous start-up of up to four ser-
vos has a noticeably higher load on the receiver power sup-
ply.
• SUMO, SUMI, SUMD, SUMD3 or SBUS
to connect a sum signal cable
ശSUMO
PPM modulated sum signal “OUT“ of the control channel 04
to max. 16.
ശSUMI
Sum signal "IN" in case of satellite receiver
ശSUMD
Digital sum signal of the control channel 04 to max. 16.
HD: Hold the last servo position in case of Fail-Safe
FS: Moving to the programmed positions in case of Fail-Safe
OF: (OFF) switch-off of the SUMD signal in case of Fail-Safe
ശSUMD3
Digital sum signal adapted to the transmitter mz-32 HoTT for
the transmission of 32 control channels including their digital
switches.
ശSBUS
Digital sum signal in SBUS format.
RX SERVO TESTV7.07
ALL–MIN : 1000µsec
ALL–MAX : 2000µsec
ALARM VOLT : 3.8V
TEST : STOP
ALARM TEMP–:–10°C
ALARM TEMP+: 55°C
CH OUTPUT TYPE:ONCE

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Special features of the GR-24 and GR-32 HoTT receiver
Connection 7
• SERVO
Input 7 is suitable for operating RC components.
• SUMDIN
Port 7 is suitable as input to a SUMD signal provided by receivers
GR-16, GR-24 or GR-32.
ശIf a GR-16, GR-24, GR-32 receiver is set to „SUMD“, as
described below under „Input 8“ (GR-16 and GR-24) or
„Input S“ (GR-32), or any combination of these combined
with a receiver set to „SUMDIN“, creates a simple satellite
connection with the receiver set to SUMDIN as the primary
receiver.
ശIf two of these receivers are set on SUMDIN as well as on
SUMD and connected crosswise with two satellite cables, a
reciprocal satellite connection is created:
SUMD SUMDIN
GR-16 HoTT and GR-24 HoTT CH8 CH7
GR-32 HoTT S CH7
Connection 8 (GR-24)
Connection S (GR-32)
CH OUTPUT TYPE
Depending on the settings in the “CH OUTPUT TYPE” line of the “RX
SERVO TEST” page of the telemetry menu, the output 8 can be used
for different scopes. Carry out the changeover as described in the
instructions for the transmitter or the SMART-BOX.
By setting ...
• ONCE or SAME
to connect a servo, ESC, Gyro, etc...
ശONCE
The servo connections of the receiver are actuated sequen-
tially. The receiver power supply is less stressed.
ശSAME
The servo connections of the receiver are actuated in a 4 pcs
block synchronic. The simultaneous start-up of up to four ser-
vos has a noticeably higher load on the receiver power sup-
ply.
• SUMO, SUMI, SUMD, SUMD3 or SBUS
RX CURVE V7.07
TYPE : A
CURVE1 CH : 02
TYPE : A
CURVE2 CH : 03
TYPE : B
CURVE3 CH : 04
7CH FUNCTION:SERVO

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to connect a sum signal cable
ശSUMO
PPM modulated sum signal “OUT“ of the control channel 04
to max. 16.
ശSUMI
Sum signal “IN” in case of satellite receiver
ശSUMD
Digital sum signal of the control channel 04 to max. 16.
HD: Hold the last servo position in case of Fail-Safe
FS: Moving to the programmed positions in case of Fail-Safe
OF: (OFF) switch-off of the SUMD signal in case of Fail-Safe
ശSUMD3
Digital sum signal adapted to the transmitter mz-32 HoTT for
the transmission of 32 control channels including their digital
switches.
ശSBUS
Digital sum signal in SBUS format.

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