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LED
SET
No. 33576
GR-12 +3xG
3-axis gyro
2.4GHz
2.4GHz
GR-12SH +3xG
-M
+M
- + 1
- + 2
- + 3
4 + -
5 + -
6 + -
EN
No. 33575 / 33576 / 33577 (Vario)
HoTT 2.4 GHz receiver with 3 axis gyro
Firmware with Heading lock and Rate mode
GR-12
Manual
Copyright © Graupner/SJ GmbH
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Index
Introduction ..........................................................................4
Service Centre .....................................................................4
Intended use ........................................................................5
Target group ........................................................................5
Package content .................................................................5
Technical Data .....................................................................5
Symbols explication ............................................................6
Safety notes .........................................................................6
Installation ............................................................................8
Binding .................................................................................8
Connections .........................................................................9
Power supply ......................................................................9
Programming the receiver settings .................................10
Receiver settings menu .....................................................10
Free mixers .......................................................................11
Gyro assignment ...............................................................14
Programming the regulation ............................................16
Gyro setting display ...........................................................16
Programming the axes sensitivity ......................................18
Initialization of the gyro ....................................................19
Firmware update ...............................................................20
Declaration of conformity .................................................21
Notes on environmental protection .................................22
Care and maintenance ......................................................22
Warranty .............................................................................22
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Introduction
Thank you very much for purchasing the Graupner Receiver GR-12
HoTT 2.4 GHz 3 axis gyro. This receiver is extremely versatile.
Read this manual carefully to achieve the best results with your
receiver 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. Keep updated by regularly
checking our own website, www.graupner.de to be always
updated with the products and firmware.
This product complies with national and European legal requirements.
To maintain this condition and to ensure safe operation, you must
read and follow this user manual and the safety notes before using
the product!
Note
This manual is part of that product. It contains important information
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
Graupner USA
3941 Park Dr Suite 20-571
El Dorado Hills, CA 95762
Website: www.graupnerusa.com
Phone: +1 855-572-4746
Email:service@openhobby.com
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 is only suitable to be installed on airplanes models.
More punctual information about receiver can be found in the
Technical data section.
The receiver is designed exclusively to be used in battery-powered, radio controlled models, any other use is not allowed. For
any improper use no warranty or liability is accepted.
Read through this entire manual before you attempt to install or
use the receiver.
Graupner/SJ constantly works on the development of all products; we reserve the right to change the item, its technology and
equipment.
Target group
The product is not a toy. It is not suitable for children under 14
years. 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 experienced modeller or a model club.
Package content
Receiver GR-12 HoTT 2.4 GHz 3 axis gyro
Manual
Technical Data
33575 33576 33577
Temperature
range
- 15...+70 °C -15 ... +70 °C -15 ... +70 °C
Antenna
length
1x wire 30 mm
1 x wire 145 (Antenna
30) mm
1 x wire 145 (Antenna
30) mm
Total weight approx.: 2,5 g approx.: 7 g approx.: 7 g
Frequency 2400 ... 2483.5 MHz 2400 ... 2483.5 MHz 2400 ... 2483.5 MHz
Range approx. 800 m 2000 m 2000 m
Dimensions
approx.
23.5 x 15 x 6 mm 36 x 21 x 10 mm 36 x 21 x 10 mm
Modulation 2.4 GHz FHSS 2.4 GHz FHSS 2.4 GHz FHSS
Power con-
sumption
20 mA 70 mA 70 mA
Operating
voltage
(2.5) 3.6 ... 8,4 V (2.5) 3.6 ... 8,4 V (2.5) 3.6 ... 8,4 V
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Symbols explication
!
Always observe the information indicated by this warning sign.
Particularly those which are additionally marked with the CAU-
TION or WARNING. The signal word WARNING indicates the potential for serious injury, the signal word CAUTION indicates possibil-
ity 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
product, but also for your own and other people’s safety. Therefore please read this section very carefully before using the product!
Do not carelessly leave the packaging material lying around,
since it might become 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 without supervision or instruction by a responsible
person.
Operation and use of radio-controlled models needs to be
learned! If you have never operated a model of this type
before, start carefully and make yourself familiar with the
model's reactions 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.
Before you start using the remote control model, you have
to check the further relevant laws and regulations. These
laws you must obey in every case. Pay attention to the possibly different laws of the countries.
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The insurance is mandatory for all kinds of model operation.
If you already have one, please inform yourself if the operation of the respective model is covered by your insurance. If
this is not the case, conclude a special liability insurance policy for models. We recommend to provide your model with
a label, where your personal data are indicated. So that the
model can be clearly assigned in the event of a crash.
Due to safety and licensing reasons (CE), any reconstruction
and/or modification of the product is prohibited.
Only use the components and spare parts that we recom-
mend. 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
disconnecting 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 outside temperatures such as from -10°C to
+55°C.
Only operate all your components using the current software
version.
If you have questions which cannot be answered by the
operating manual, please contact us or another expert in the
field.
WARNING
Also while programming, make sure that a connected elec-
tric motor cannot accidentally start. Risk of injury by rotating
propellers!
Avoid shock and pressure. Check the receiver regularly for
damages to the housings and cables, specially after model
crashes. Damaged or wet receiver, even if re-dried, should
no longer be used!
!
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Installation
The receiver must be aligned at right angles to the model on the
receiver platform.
The lower surface of the receiver must always be parallel to one
of the model sides.
Prior to installation, remove the sticker on the back of the receiver.
We recommend using double-sided tape No.: S8376 for Gr-18
to fix the receiver in place.
Binding
Binding is only possible if the receiver has not been linked with
a bound transmitter since being switched on (red LED lights).
Press the SET button to set the receiver to BIND mode.
If you wish to bind the receiver to a new model memory, this is
the procedure:
Switch the transmitter’s RF section off in the “Basic model
settings” menu (see transmitter manual)
Switch on the receiver and put it in binding mode, by press-
ing and holding the binding button (green and red LED on
the receiver are flashing)
Initiate binding in the transmitter’s “Basic model settings”
menu.
If the red LED of the receiver goes out within about 10 sec-
onds, the binding process has been completed successfully.
Your transmitter/receiver combination is now ready for oper-
ation.
If the red LED is still lit, the "binding“ failed. In this case,
repeat the whole procedure.
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Connections
Connect the servos to the row of sockets on one end of the
receiver. The connectors are reverse polarity protected: note the
small chamfers on the sides. Never use force – the connectors
should engage easily. The polarity is also printed on the receiver;
the negative wire (-) is brown, the positive (+) red and the signal
orange. The servo sockets of Graupner/SJ HoTT 2.4 receivers
are numbered sequentially.
The socket for channel 6 can also be programmed to deliver a
(digital) sum signal (see receiver settings section).
Power supply
The receiver does not feature specific sockets for connecting
the battery. 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.
Attention!
Never connect a battery with voltage higher than 8,4V directly to the
receiver! The receiver and the connected servos would be destroyed.
Telemetry or channel (T/5) socket
The socket is also used for channel 5
The optional telemetry sensors or modules are connected to the
socket marked “T” (T/5)- Telemetry. In addition, the update is
performed on this socket (see firmware update section).
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Programming the receiver settings
The receiver can be programmed with a suitable HoTT transmitter or in connection with the SMART-BOX.
Receiver settings menu
The receiver setup menu appears in the “Telemetry“ menu under
SETTINGS / DISPLAYS or if you are using a SMART-BOX under
SETTING & DATAVIEW. How to access this menu is described
in the operating instructions supplied with your transmitter or
Smart-Box.
Low voltage warning (ALARM VOLT):
If the receiver voltage or the external voltage at channel 5 falls
below the set value, a low-voltage warning is generated by the
transmitter's RF module in the form of a "general alarm tone"
(regular beeping at a rate of approx. one beep per second) or
the "receiver voltage" speech output message.
Temperature warning (ALARM TEMP):
If the receiver temperature exceeds the set temperature, a warning is generated by the transmitter’s RF module in the form of a
"general alarm tone" (regular beeping at a rate of approx. one
beep per second) or the "receiver temperature" speech output
message.
Maximum altitude (Altitude max.) - only by No. 33577 with integrated Vario:
this is where you can specify a maximum altitude. When the
model reaches this altitude, an alarm is triggered either by the
transmitter's RF module in the form of a "general alarm tone"
(regular beeping at a rate of approx. one beep per second) or
the "altitude" speech output message. Note: When the receiver
is switched on, the model's current altitude is set to 0; the displayed altitude is therefore the altitude relative to the launch
point.
Cycle time (CYCLE):
Cycle time (PERIOD): If your system is used exclusively with digital servos, you can set a cycle time (frame rate) of 10 ms. If your
system includes some or uses exclusively analogue servos, you
should always select 20 ms, as many analogue servos cannot
process the higher frame rate and may respond by "jittering" or
"growling".
HoTT sum signal (SUMD):
If you activate the digital sum signal at channel 6, a sum signal
containing 8 channels is present at this socket, instead of a
servo signal.
RECEIVER 2.0 < >
>ALARM VOLT 3,8V
ALARM TEMP: 70°C
Altitude max: 125m
>CYCLE: 20ms
SUMD at C6: No
Sensor at C5 No
LANGUAGE:
English
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The HoTT receiver configured as SUMD constantly generates a
digital sum signal from 8 control signals from the transmitter and
makes this signal available at the specified servo socket, which
is receiver-specific. At the time this manual was revised, this
type of signal was being used by several of the latest electronic
applications of flybarless systems, power supplies, etc.
Channel 5 (C5):
The output channel 5 can be used as servo output, as telemetry
port or as voltage measurement. If the voltage measurement is
active, (instead a servo or as telemetry port) only through the
switch described at the begin a maximal voltage of 25.5 V can
be measured through this output. This voltage will be shown in
the display instead the receiver voltage. This way it is possible
to monitor the main battery voltage without using external sensors.
If the channel 5 is not set up as servo but as sensor or voltage measurement, the channel 5 will be automatically assigned on channel
6. The change will be active only after switching the receiver off and
on again.
Note
If the voltage measurement is active, only through the following
described switch a maximal voltage of 25.5 V can be measured
through this output. Never connect a battery to this telemetry port
without this switch!
Free mixers
Note
If you wish to use the gyros, you must always set the tail type to ‘normal’ in the transmitter’s model type menu.
If your model is a delta, features a V-tail, or has two elevator servos,
you must use the receiver mixer - not the transmitter mixer - to control these control surfaces, since the gyro stabilization system will
have no effect on these servos otherwise.
The four receiver mixers work ‘downstream’ of the gyros.
If you have already programmed mixer functions in the “Wing mixers” or “Free mixers” menu of your HoTT transmitter, you must ensure
that those mixers do not overlap with those available in this menu!
<- Channel 5
FREE MIXER < >
>MIXER: 1
FROM CHANNEL: 1
>TO CHANNEL: 6
>TRIM: +0%
TRV - : +100%
TRV + : +100%
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MIXER:
Up to four mixers can be contemporaneously programmed .
You can switch between Mixer 1, Mixer 2, … and mixer 4 in the
“Mixer” line.
The following settings only affect the mixer selected in this line.
FROM CHANNEL:
The signal source (or source channel) is mixed in to the target
channel (TO CHANNEL) with a programmable amount. The
method of setting up the values is analogous to the “Free mixers” menu in HoTT transmitters.
TO CHANNEL:
Part of the source channel signal (FROM CHANNEL) is mixed
into the target channel (TO CHANNEL). The mixer ratio is determined by the percentage values entered in the “TRAVEL-” and
“TRAVEL+” lines. Select “0” if you do not require the mixer.
Mixer ratio (TRAVEL-/+): in these two lines you can define the
mixer ratio in relation to the source channel (FROM CHANNEL);
the value is set separately for both directions.
Programming examples
V-tail with rudder differential
Differential is not normally necessary with this tail type. Mixer 3
is not required if you do not need rudder differential, and TRAVEL
for mixer 2 must then be set to -100%.
Alternatively you may prefer to carry out the programming using
the transmitter menu. A ‘Rudder / elevator’ mixer can be set up
at the transmitter instead of ‘Free mixer 3’ at the receiver; the
mixer should be set up asymmetrically, e.g. +30%, -30%. This
option frees up one mixer at the receiver.
FREE MIXER < >
>MIXER: 2
FROM CHANNEL: 4
>TO CHANNEL: 3
>TRIM: +0%
TRV - : -60%
TRV + : +100%
FREE MIXER < >
>MIXER: 3
FROM CHANNEL 4
>TO CHANNEL: 4
>TRIM: +0%
TRV - : +100%
TRV + : +60%
FREE MIXER < >
>MIXER: 1
FROM CHANNEL: 3
>TO CHNNEL: 4
>TRIM: +0%
TRV - : +100%
TRV + : +100%
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Delta with aileron differential (1 aileron)
In this example aileron differential is set to 40%. Alternatively you
may prefer to carry out the programming using the transmitter
menu. A ‘Aileron -> elevator’ mixer can be set up at the transmitter instead of ‘Free mixer 3’ at the receiver; the mixer should
be set up asymmetrically, e.g. +30%, -30%. This option frees
up one mixer at the receiver.
Two elevator servos
(channel 6 for the second elevator servo)
Only for transmitters without a butterfly (crow) mixer:
If a butterfly (crow) mixer is required, you will not be able to use
one of the two functions ‘differential’ or ‘landing flap’ adjustment, as 2 mixers are needed for this.
Programming examples
Programming examples
FREE MIXER < >
>MIXER: 2
FROM CHANNEL: 3
>TO CHANNEL: 2
>TRIM: +0%
TRV - : -100%
TRV + : -100%
FREE MIXER < >
>MIXER: 3
FROM CHANNEL: 2
>TO CHANNEL: 2
>TRIM: +0%
TRV - : +60%
TRV + : +100%
FREE MIXER < >
>MIXER: 1
FROM CHANNEL: 2
>TO CHANNEL: 3
>TRIM: +0%
TRV - : +100%
TRV + : +60%
FREE MIXER < >
>MIXER: 1
FROM CHANNEL: 3
>TO CHANNEL: 6
>TRIM: +0%
TRV - : +100%
TRV + : +100%
FREE MIXER < >
>MIXER: 1
FROM CHANNEL: 1
>TO CHANNEL: 2
>TRIM: +0%
TRV - : +100%
TRV + : +100%
FREE MIXER < >
>MIXER: 2
FROM CHANNEL: 1
>TO CHANNEL: 5
>TRIM: +0%
TRV - : -100%
TRV + : -100%
FREE MIXER < >
>MIXER: 1
FROM CHANNEL: 1
>TO CHANNEL: 2
>TRIM: +0%
TRV - : +100%
TRV + : +100%
FREE MIXER < >
>MIXER: 2
FROM CHANNEL: 1
>TO CHANNEL: 3
>TRIM: +0%
TRV - : -100%
TRV + : -100%
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Gyro assignment
>AILERON SERVOS:
Aileron servos: you should enter the value 2 in this line if your
model has two aileron servos. In this case the gyro for channel
(servo) 2 also acts on servo 5. If the ailerons are also used as
flaperons or speedbrakes, gyro suppression is based on the
sum of both channels.
Note
The servo reverse setting must be the same for both aileron servos,
i.e. either both ‘normal’ or both ‘reverse’. If this is not possible, on no
account should you reverse one servo in the transmitter menu. The
only option is to re-install it in the model by turning it round physically.
However, if your model is fitted with programmable servos (e.g.
Graupner DES, HVS or HBS types - see the instructions for the update
program ‘Firmware_Upgrade_grStudio - then it is possible to reverse
the direction of rotation at the servo itself.
Please read the installation notes on page 8 of these instructions. The first step is to define the three gyro axes and the orientation of the receiver. This is accomplished by switching on
the transmitter and model, and selecting ‘New setting: yes’ in
the receiver’s ‘Gyro settings’ menu.
Now move the stick for any control surface to full travel (in
the servo display at least 25%) in the indicated direction; in
the following example we use the aileron channel.
The detected axis (aileron) is highlighted (black background).
(In the receiver’s default state the value for all axes is shown
as ‘+0’; the axes can also be set manually to ‘+0’. 0 = inactive)
Now turn the model through at least 45° in the direction cor-
responding to the stick movement. For example, if you
moved the aileron stick to the left, you must simulate a left
turn with the model -> move the left wing down through at
least 45°.
This process defines the one axis and direction; now you
must repeat the procedure for the other two axes.
Axis assignment < >
>AILERON SERVOS: 2
New setup: Yes
AILE: (right) +2
ELEV:(push) +0
RUDD:(right) +0
Axis assignment < >
>AILERON SERVOS: 2
New setup: No
AILE: (right) +2
ELEV:(push) +1
RUDD:(right) -3
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The gyro axis 1, 2 or 3 is now displayed in the ‘Aileron / Ele-
vator / Rudder’ display; a negative prefix will appear if servo
reverse is activated.
Once all three axes are defined, the display automatically
reverts to ‘New setting: no’.
Elevator:
Movement of the model Control surface action (tail view)
Rudder:
Movement of the model Control surface action (tail view)
Aileron:
Movement of the model Control surface action (tail view)
!
CAUTION
Check that all the gyros are
working in the correct direction!
Move the model in all axes
directions. Check the movements and travels.
Now check the control
surface deflections - see
diagrams below.
You must not fly the model
before doing this: crash
hazard!
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Note
Before you start entering settings for a new model, it is essential to
select the number of aileron servos in the Aileron servos menu point,
and to define the gyro axes and orientation in the New settings menu
point.
Programming the regulation
Gyro setting display
MODE
In this point you can select the gyro correction mode (0-3):
0 - no gyro correction
1 - normal gyro correction (P and D parameter)
2 - heading lock mode (I parameter) with suppression
(Outside the suppression area the gyro control is active, in
stick center position acts the heading lock)
3 - Rate mode
(Heading lock acts in stick center position through the
entire area)
NOTE: In Heading lock mode the servos are moved to the center
position if the factor is set to 0%.
Mode switching
The mode can be set separately for AILE/ELEV and RUDD. The
mode can be set permanently or it can be switched through an
assigned channel. Program the selected channel in your transmitter with a switch, the following positions switch the related
mode:
Mode 0 - 100%
Mode 1 - 50%
Mode 2 0%
Mode 3 ≥ 50%
Preparation step by step:
1. Trim the model with the gyro correction off
2. Switch the receiver off and on to save the values as standard
3. Activate the gyro correction
4. The phase trim should not be used!
5. Set the factor for gyro correction, eventually check the values for the single control surfaces
GYRO SETTINGS < >
MODE AI/EL (2)CH7
MODE RUDD (2)CH7
>Aileron: 0
>Elevator: 0
Rudder : 0
Factor : (44%)C10
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Note
If the model is too agile in mode 3, it is then recommended to
set in the transmitter DUAL RATE and/or EXPO for this mode.
Thus the model will react in a more docile way. In the Rate mode
the model tries to reach the controlled rate. Also in mode 2
EXPO can be useful.
Aileron/elevator/rudder:
Shows the programmable factors for the corresponding control
surface.
The gyro correction can also be disabled by setting the value to
OFF. Do not exceed 4 - 5 as maximum value for the normal flight
phase, 2 - 3 for speed, 3 - 6 for landing. The maximum value of
10 should be reserved for torque-rolls only.
Factor (general sensitivity)
Setting this value the 3 parameters will be influenced contemporaneously.
General sensitivity for all gyros, action grade settable through a
controller between 0 and 200%
Move the cursor to the Factor line. Move the cursor to reorder
the factor for aileron, elevator and rudder by using a proportional
control (adjustment range up to 200%; channel value -100%
means a factor of 0%, channel value 0% means 100%, and
+100% means 200%). This makes it a very easy matter to match
the gyro’s corrective effect to the model’s airspeed. In particular,
higher gyro gain can be used for the landing approach - without
the need to switch flight phases.
Once you have found the optimum settings, you can set up a
transmitter switch to control the gyro, i.e. for switching between
gain settings. For example, you could assign a 3 position switch
to “Factor”, and then use it to switch the values between 0%
and 100% (OFF) so as 200%. In the transmitter the servo display for this 3 functions switch must indicate -100, 0 and +100%.
Note
The OFF value means a gyro action of 100%!
Good to know!
The standard factor should cause the gyros to correct the model’s attitude quickly when it is upset by an outside influence.
Without causing oscillation, but in practice the optimum values
for a particular model can only be found by flight-testing. If the
model shows little or no automatic stabilization with the default
settings, the value should be raised; on the other hand. If the
model oscillates (wave-like movements in flight), the value should
be reduced.
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Some transmitters allow the corrective factors to be altered
during a flight using the proportional controls, whereas others
allow fixed values only.
Flight phase specific settings
It is possible to use a channel to control the factor value by setting up flight phase specific transmitter control settings, but only
with mx-20 / mc-20 / mc-32 / MZ-24PRO; please see the
instructions supplied with your transmitter and refer to the
“Transmitter control settings” and “Flight phase settings”.
Programming the axes sensitivity
Programming through transmitter with proportional controls
If your HoTT transmitter is equipped with proportional controls,
it is also possible to adjust the value for each axis during a flight:
what you might call ‘flying the settings’. You need to assign proportional controls to any channel in the range 5 to 16 (in this
example channel 9); now you can alter the value using these
controls. The actual value will be shown between parenthesis.
Procedure, using the ailerons as an example: step by step:
1. Move the cursor to the appropriate line, in this case “Ail” for aileron.
2. Press the SET button to activate the Channel field.
3. Select the appropriate channel and save the setting with pressing the SET button again
4. Move the related proportional control to change the value (range
between 0 and 10, where 0 means no gyro correction for the
related axe).
5. This value can also be changed by pushing the left or the right
button. This frees up the channel previously occupied by the
proportional control, So that it can be used for some other purpose, e.g. for elevator or rudder.
6. Move on to elevator and / or rudder, and select the channel and
value (you can either select the same channel, in order to alter
all the axes simultaneously, or different channels, allowing you
to program the axes individually).
7. Now test-fly your model and fine-tune the values one by one
until your preferred stabilizing effect is achieved without the
model oscillating.
8. It may be sensible or easier to activate the gyro for one axis only
at first, and then to establish the optimum setting for that axis,
rather than for several axes simultaneously.
GYRO SETTINGS < >
MODE AI/EL (2)CH7
MODE RUDD (2)CH7
>Aileron: (2)CH9
>Elevator: (3)CH8
Rudder : 6
Factor : (44%)CH10
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Programming by transmitter without proportional controls
1. Move the cursor to the appropriate line, in this case “Ail” for
aileron.
2. Press the SET button to activate the Channel field, select the
appropriate value (1 - 10 of OFF), then press the SET button
to save it.
3. First select a low value (see value section for starting points)
and carry out a test-flight. If gyro stabilization is not sufficiently pronounced, increase the value step by step until the
level of correction is as required; if the model already oscillates, reduce the value step by step.
4. Do not select a channel (C5 - C16); this function is only rel-
evant to transmitters with proportional controls.
5. Move on to elevator or rudder and select the desired value
(or OFF).
6. Leave the settings for “Factor” to OFF.
7. It may be sensible or easier to activate the gyro for one axis
only at first, and then to establish the optimum setting for
that axis, rather than for several axes simultaneously.
Initialization of the gyro
Once the model has been switched on, the gyro immediately
becomes active but still needs to be initialized. To initialize the
gyro, keep your model still when you switch it on. After approx.
2 seconds in still position, the ailerons move briefly in both directions. These "wiggles" indicates that initialization has been successful and that calibration is complete, only now the model can
be moved.
Al the sticks must be left in the central position!
Note
During the initialization the neutral position will be detected, for this
reason it is very important that the model is not moved during the
activation!
In the same way during the gyro initialization also the central position of each control channel is saved. By gyro suppression the gyro
correction is reduced with increasing control deflection, at +/- 100%
of the gyro is deactivated.
GYRO SETTINGS < >
MODE AI/EL (2)CH7
MODE RUDD (2)CH7
>Aileron: 2
>Elevator: 4
Rudder : 6
Factor : OFF
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Firmware update
Updates to the receiver’s firmware are made via the output channel 5 / telemetry socket using a PC running Windows XP, Vista
or 7. You will also need a USB interface, order No. 7168.6, and
adapter lead, order No. 7168.6A or 7168.S, which are available
separately.
The programs and files required can be found in the Download
area for the corresponding products at www.graupner.de.
Receiver
Receiver GR-12+3xG HoTT/ (No. 33576/33577):
Receiver GR-12SH+3xG HoTT (No. 33575): it will be necessary
an accessory adapter cable No. 33565.1.
Connect the adapter lead to the USB interface No. 7168.6. The
connectors are reverse polarity protected: note the small chamfers on the sides. Never use force – the connectors should
engage easily.
Connect the adapter lead to the receiver's telemetry socket. The
connectors are reverse polarity protected: note the small chamfers on the sides. Never use force – the connectors should
engage easily.
Starting the "Slowflyer/Gyro receiver update"
We recommend accessing the "Slowflyer/Gyro receiver update"
program from the "Firmware_Up-grade_grStudio" program.
Click on the "Receiver Downloader" item under "Link" in the left
function menu. (Alternatively, select the "Micro Receiver
Upgrade" under "Menu").
It is also possible to start the associated application program
directly. By double-clicking on the file “micro_gyro_swloader.
exe”. You will find this .exe file in the "Graupner_ PC Software"
folder of the "HoTT_Software VX" package.
A program window will now appear in which you should first set
the "correct" COM port for the USB interface No. 7168.6 in the
selection window. (See following picture)
If you are not sure which port to use, check the COM port in the
"Select Port" window in the "Menu" of the "Firmware_Up-grade_
333575
333576/33577
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grStudio" and note down the COM port number for the "Silicon
Labs CP210x USB to UART Bridge" entry – in this case "COM03".
(If you select the wrong port, you will be alerted to this when you
read out the receiver data). Click on "File" to load the corresponding firmware file named e.g. "GR12_33577_V_XX.bin"
from the hard disc ("XX" stands for the version number).
When the file has loaded, click on start...
... connect the receiver and switch it on.
The progress bar shows that the transfer is running normally.
The receiver LED lights up red during this process and flashes
once the transfer is completed.
Please refer to the detailed update instructions for the item in
question in the Download area at www.graupner.de.
Declaration of conformity
33575/33576/33577 Receiver GR-12 HoTT 2.4 GHz 3 axis gyro
Graupner/SJ declares that the product is conform to EU norms.
EN 301 489-1 V1.9.2 EN 301 489-17 V2.2.1
EN 300 328 V1.8.1
EN 60950-1+A11+A1+A12+A2:2013
EN 62311:2008
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Notes on environmental protection
Disposal notes
This symbol on the product, user manual or packaging indicates
that this product must not be disposed of with other household
waste at the end of its life. It must be handed over to the applicable collection point for the recycling of electrical and electronic
equipment.
The materials are recyclable as marked. By recycling, material
reusing or other forms of scrap usage you are making an important contribution to environmental protection.
Care and maintenance
Notes on care
The product does not need any maintenance, it works so as it
is without any special care. In your own interests protect it from
dust, dirt and moisture.
Clean the product only with a dry cloth (do not use detergent!)
lightly rub.
Warranty
The Graupner, Henriettenstrassee 96, 73230 Kirchheim/Teck
grants from the date of purchase of this product for a period of
24 months. The warranty applies only to the material or operational defects already existing when you purchased the item.
Damage due to wear, overloading, incorrect accessories or
improper handling are excluded from the guarantee. The legal
rights and claims are not affected by this guarantee. Please
check exactly defects before a claim or send the product,
because we have to ask you to pay shipping costs if the item is
free from defects.
The present construction or user manual is for informational purposes only and may be changed without prior notice. The current version can be found on the Internet at www.graupner.de on
the relevant product page. In addition, the company Graupner
has no responsibility or liability for any errors or inaccuracies that
may appear in construction or operation manuals.
No liability can be accepted for printing errors.
P
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