GRAUPNER HoTT 2.4 User manual

GRAUPNER/SJ GmbH – Postfach 1242 – 73230 Kirchheim/Teck – www.graupner.de
Manual
33611 General Air-Module 2-6 S with Vario
Graupner HoTT 2.4
Contents
1. Description.................................................................................................................................................................2
2. Warnings ...................................................................................................................................................................3
3. Mounting the Module in the Plane.............................................................................................................................4
4. Connection of sensors...............................................................................................................................................5
5. Starting up.................................................................................................................................................................6
6. Operation...................................................................................................................................................................6
6.1. Display LIPO CELL VOLTAGE...............................................................................................................................7
6.2 Sensor 1/2 voltage...................................................................................................................................................8
6.3. Sensor 1/2 Temperature.........................................................................................................................................8
6.4. Vario Display...........................................................................................................................................................9
6.5. RPM sensor / Fuel sensor......................................................................................................................................9
7. Programming Warning thresholds...........................................................................................................................10
7.2. Minimum Cell Voltage Sensor 1 (Page 3).............................................................................................................12
7.3. Maximum Cell Voltage Sensor 1 (Page 4)............................................................................................................12
7.4. Minimum Temperature Sensor 1 (Page 5)............................................................................................................12
7.5. Maximum Temperatur Sensor 1 (Page 6).............................................................................................................12
7.6. Minimum Cell Voltage Sensor 2 (Page 7).............................................................................................................13
7.7. Maximum Cell Voltage Sensor 2 (Page 8)............................................................................................................13
7.8. Minimum Temperature Sensor 2 (Page 9)............................................................................................................13
7.9. Maximum Temperature Sensor 2 (Page 10).........................................................................................................13
7.10. Maximum Current (Page 11) ..............................................................................................................................14
7.11. Maximum used Capacity (Page 12)....................................................................................................................14
7.12. Minimum Voltage socket 1 (Page 13).................................................................................................................14
7.13. Maximum Voltage socket 1 (Page 14)................................................................................................................14
7.14. Minimum Altitude (Page 15) ...............................................................................................................................15
7.15. Maximum Altitude (Page 16) ..............................................................................................................................15
7.16. Sink rate per second (Page 17)..........................................................................................................................15
7.17. Sink rate per 3 seconds (Page 18).....................................................................................................................15
7.18. Climb rate per second (Page 19)........................................................................................................................16
7.19. Climb rate per 3 seconds (Page 20)..................................................................................................................16
7.20. Minimum RPM (Page 21)...................................................................................................................................16
7.21. Maximum RPM (Page 22)..................................................................................................................................16
8. Setup Displays.........................................................................................................................................................17
8.1. Calibration of the temperature sensors ................................................................................................................17
8.2. Continous vario ....................................................................................................................................................18
8.3. Blade Number .....................................................................................................................................................19
8.4. Current Control ...................................................................................................................................................20
8.5. Settings and calibration of the precision fuel sensor (fuel settings)......................................................................22
9. Summary Signal tones ............................................................................................................................................25
10. Telemetry display...................................................................................................................................................26
11. Firmware Update ..................................................................................................................................................27
12. Specications General Air-Modul ..........................................................................................................................28
13. EG declaration of conformity.................................................................................................................................29
14. Environmental Protection Notes............................................................................................................................29
15. Warranty................................................................................................................................................................30

THANK YOU
for purchasing the General Air-Module for the Graupner HoTT 2.4 system.
If you do not have the Graupner HoTT 2.4 radio system this product will not work. This product is not com-
patible with any other 2.4GHz radio system.
Please read through this entire manual before you attempt the installation and usage of your Graupner HoTT
General Air-Module!
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 deli-
very 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. Description
The Graupner-HoTT GeneralAir-Module enables the wireless monitoring of for example the battery voltage,
power consumption, motor rpm, fuel consumption or altitude of the model in real time. The General Air-
Module can be programmed directly with all HoTT transmitters with integrated telemetry in the transmitter
display (some models such as MC-24 with update or modication).
The following transmitters must be programmed via SMART-BOX order No. 33700: mx-12 HoTT order
No. 4754, mx-16 HoTT order No. 4755, and mx-22 No. 4801/4802, mc-19 No. 4821 and mc-22 No. 4818
after conversion to HoTT. This differentiation between the transmitter models and the resulting operation is
explicitly mentioned at the appropriate point in the instructionsn (see also point 5).
For full functionality, additional sensors are necessary.
Informations available - Setup:
Altitude, min. Altitude, max.Altitude, negative/positive difference/s, negative/positive difference/3s
Battery voltage (total - single cell), Min./Max. voltage, Min./Max. cell voltage
Maximum current, used capacity
Temperature (optional Sensor 1/Sensor 2), Min./Max. Temperature
Fuel level, Min. fuel level,
RPM, Minimum/ Maximum RPM
Note: Any settings you make on the Transmitter or SMART-BOX will be stored in the General
Air-Moduleonly!
Since the General Air-Module can be updated via the USB connection, you always have the latest software
and can utilize future functions or languages. Firmware updates for the General Air-Module can be transfer-
red via the DATAor telemetry interface in conjunction with a PC running Windows XP, Vista or 7. For this you
also require the USB interface, Order No. 7168.6, the adapter lead, Order No. 7168.6A and a Y-cable Order
No. 3936.11 which are available separately.
The programs and les required for this are available from www.graupner.de in the Download area for the
corresponding products.
02 33611GeneralAir-Modul-GraupnerHoTT2.4

SYMBOLS AND THEIR MEANINGS
ATTENTION!
This symbol alerts you to the following notes, which users must observe. Ignoring or neg-
lecting any point in these notes may have an adverse effect on the reliable operation of the
device, and the operator’s personal safety.
WARNING!
This symbol alerts you to the following notes, with which users must comply. Ignoring or
neglecting any point in these notes may have an adverse effect on the reliable operation of
the device, and the operator’s personal safety.
This symbol highlights information that should be considered by the user to ensure safe
operation of the unit.
PThis symbol alerts you to notes concerning the proper care of the charger, which users should
always observe in order to ensure that the device has an extended useful life.
2. Warnings
This product isn‘t designed for use by children under the age of 14, it isn‘t a toy!
The controller‘s CE certicate doesn‘t unbind users from their obligation to use ultimate cau-
tion.
Should the motor refuse to start up, or after a crash, then you should immediately set the
transmitter‘s control stick to the OFF position to avoid any overload to the controller. Check
once again that the motor connections are correct. It may be necessary to shorten the leads,
and / or set a throttle pick-up delay, in order to prevent timing errors.
Use only motors delivered by GM-Racing or Graupner/SJ which are designed for the intended
range of voltages!
Use only high performance batteries by Graupner/SJ or GM-Racing. Using batteries with an
increased internal resistance may lead to the destruction of the controller! Do never use a
power supply!
Never leave your model unattended when a battery is connected. In case of a deciency this
may cause an outbreak of re on the model or its environment.
Neither the controller nor any other electronic components should ever come in touch with wa-
ter. Protect the controller against dust, dirt, humidity, vibrations, or other dangerous elements.
Never run the motor on a separate battery. This will destroy the controller or the motor, and
leads to the loss of our warranty.
33611 General Air-Modul - Graupner HoTT 2.4 03

Never mix up polarities. Use plug systems which offer protection against wrong polarity. Avoid
short-circuiting and blocking the motors.
All cables and connectors should have good insulation. Short-circuits may lead to the destruc-
tion of your motor.
Graupner/SJ-controllers are designed for use in battery-driven, radio-controlled models only;
any other use is not permissible. Using this device on a passenger-carrying model is forbid-
den!
Motors, gears or gearboxes, and propellers are dangerous objects. Never keep next to or in
front of the danger area of the drive!
Technical defects or failures of mechanical or electronic parts may lead to an unexpected
start-up of the motor, with parts of it ying off, maybe causing severe injuries.
Always check the service range of transmission of your model rst thing while it‘s still on the
ground (hold the model tightly!). Try again with motor on and also with fast changes of the
throttle stick.
Don‘t make any changes on the structure and design of your controller unless they are de-
scribed in the manual.
Only those components and accessory parts which have been recommended by us may be
used. Use only genuine and matching Graupner/SJ connectors and accessory parts.
Make sure whenever you start connecting and operating the controller, that your transmitter
isswitched on, and has the throttle set to position “STOP”.
Limited warranty: Graupner Ltd cannot survey the proper application of the mounting and
using regulations, nor the working methods and conditions during the installation, use, ope-
ration, and servicing of the controller. Therefore Graupner Ltd cannot take on any liability for
any loss, damage, or costs resulting from an incorrect use or operation of the product, or
connected in any way with incorrect use or operation.
3. Mounting the Module in the Plane
Mount the General Air-Module at an appropriate location in the model. The vario sensor is already integra-
ted in the module. This sensor detects changes in air pressure and calculates the resulting actual altitude.
Therefore, make sure that the sensor is wind-protected in the model and is not located directly in the ow
of the propeller. Likewise, it must not be mounted on an air-tight place, such in a sealed radio box. The best
way to x the General Air-Module with the mounting tabs or double sided tape on a wind-protected frame in
the model, the orientation of the sensor is not important.
04 33611GeneralAir-Modul-GraupnerHoTT2.4

Note: the accuracy of the sensor also varies with altera-
tions in ambient air pressure, e.g. due to sudden chan-
ges in weather conditions, as well as with changes in air
pressure which occur in the course of the day or during
an extended ight. It is not uncommon for minor uctuations in air
pressure to affect the accuracy of the sensor to the extent of about
10 to 20 m. These inaccuracies can also be caused by pressure
changes inside the fuselage itself (e.g. high pressure due to the forced propeller airow, or air owing into
the model during a ight).
4. Connection of sensors
The consumed current and capacity is measured only on connection 1 (IN) and 8 (OUT). Therefore, the
main battery for the motor (electric model - G3.5 connector) or the transmitter battery (Nitro model - JR
connector) must be connected to this connection. Use a connector system to replace the battery easily.
If you use a LIXX battery, the balancer can be plugged into socket 6 to monitor the individual cell voltage.
Caution: never connect batteries to both sockets (G3.5 and JR)! These are inter-connected, and
must only be used separately. Note also that the input voltage is present at the JR socket at output
8; do not connect the plug to the receiver if the voltage is higher than the maximum permissible
voltage for receiver or servos.
Note: All negative terminals are interconnected and not galvanically seperated.
Caution: Please ensure that the continuous current does not exceed the stated maximum for the
current sensor. You should also ensure that the motor start-up current is not so high that the shunt
resistors are overloaded! This can result in a break in the power supply, which would cause the
model to crash.
For this reason it is important to carry out a thorough check of the motor’s function and maximum current
drain: start cautiously, then increase to maximum load and eventually to a full battery charge, to ensure that
the current shunt resistors are not overloaded.
The “regulate current” function (see point 7.4.) can be used to limit the maximum current passing through
the model’s electronic speed controller. If the model’s current drain is above the peak current permitted for
the General Air module, then it is essential to use this function to prevent damage to the module or a break
in the power supply.
If high peak currents are likely, you must use the more powerful General Electric sensor, Order No. 33620,
or alternatively you might prefer to manage without current measurement altogether.
When measuring power system currents please note that the voltage fall-off at the shunt resistors can place
an increased load on the speed controller, and on the speed controller’s capacitors in particular. For safety
reasons you should therefore operate the controller on one or two cells fewer than the maximum stated
cell-count, i.e. not with the full count.
Connect any additional sensors to the corresponding sockets as shown in the illustration at the top.
1 Battery input max. 60 V DC / 40 A
2 Receiver / SMART-BOX and
Firmware-Update (T)
3 Control Out (output ESC)
4 Control In (input ESC)
5 Sensor 1 (33612 / 33613)
6 Balancer connector LiXX 2 - 6S
7 Sensor 2 (33612 / 33613)
8 Battery output
9 RPM sensor (33615 / 33616)
10 Fuel sensor (33614)
11 Control Switch (select switch for
current control)
1
2
3
4567
8
9
10
11
+ -
33611 General Air-Modul - Graupner HoTT 2.4 05

5. Starting up
Connect the General Air-Module (socket 2) with the 3-pin lead to socket marked „T“ of the receiver. The
connector system is polarised, look for the small camfer on the edges. Never use force - the plug should
engage easily and fully. The sockets are labeled accordingly: black wire (-), red wire (+) and orange wire (S).
Only for transmitters under 1 „exception“ with SMART-BOX:
Install the SMART-BOX at the mounting bracket of the transmitter as shown in the gure. Connect the box
then the 3-pin lead to the transmitter. Put one end of the cable into the DATAjack on the transmitter and the
other into the jack on the right side of the SMART-BOX. The connector system is polarised, look for the small
camfer on the edges. Never use force - the plug should engage easily and fully. The sockets are labeled
accordingly: black wire (-), red wire (+) and orange wire (S).
Note: You can connect the General Air-Module instead of the receiver directly to the jack on the
right side of the SMART-BOX. By doing this, the settings will be sent directly to the General Air-
Module (without using the radio control system) and the programming is much faster.Apower sup-
ply for the SMART-BOX is neccessary (3.6 - 9 V), inserted on the left side. The connector system is reverse
polarised, look for the small camfer on the edges. Do not use force, the plug should click into place easily.
This sockets is labeled accordingly also. The black wire must be down (-), the red top (+).
6. Operation
The operation of the General Air-Module is similar to the operation of the transmitter. You should also read
the manual of your remote control system, especially the chapter „telemetry“. The operation is done in
the transmitter menu „telemetry“ under the display SETTING & DATAVIEW. The sensor displays follow
the receiver displays (RX), i.e. the „Lipo Cell Voltage“ display follows after the last display servo test (RX
SERVO TEST).
Please note: the menus can only be selected when the receiver is switched on. When you switch
the receiver on, it may take a few seconds before the receiver display becomes active and can be
selected: > symbol appears at the top right corner of the transmitter display (TX).
There may be a slight delay in the screen’s response to inputs, since all the settings are transmitted directly
to the receiver by wireless means.
Operation with the SMART-BOX:
The SMART-BOX is operated by the four buttons on the top. Switch with the ESC and ENTER keys between
the different displays. With the DEC and INC buttons you can select the parameters in the display (INC
moves the cursor down, DEC up).
Switch on the transmitter. On the startup screen appears SETTING AND DATA VIEW / MODEL SELECT.
Move the arrow cursor with the INC or DEC buttons on SETTING AND DATA VIEW and then press ENTER
to display the parameters of the transmitter, receiver and telemetry sensors and / or program it, or select
MODEL SELECT to display the telemetry data graphically (see point 9). In MODEL SELECT display no
changes are possible.
After SETTING AND DATA VIEW have chosen, the „Lipo Cell Voltage“ display is available. The sensor dis-
plays follow the transmitter (TX) and receiver (RX) displays, i.e. the „Lipo Cell Voltage“ display follows after
the last display servo test (RX SERVO TEST).
06 33611GeneralAir-Modul-GraupnerHoTT2.4

6.1. Display LIPO CELL VOLTAGE
Please note: the labeling of the arrows of the following displays corresponds to the keys on top of the
SMART-BOX. This assignment is different depending on the remote control system.
SMART-BOX mx-12/16/20/32 HoTT mc-19/mc-22/mc-24/mx-24 HoTT
ENTER uENTER
ESC tCLEAR
INC scroll: q value: p scroll: push Rotary + P value: Rotary P
DEC scroll: p value: qscroll: push Rotary + Q value: Rotary Q
INC+DEC SET push Rotary
LiPo Cell Voltage >
Overall volt: 11.890V
Min 8.450V
1N 3.201V
3N 3.030V
5N 0.000V
Min 2.567V
ESC
Max 16.800V
2N 3.100V
4N 2.567V
6N 0.000V
Max 3.201V
ENTER
The displays 6.1 to 6.5 are simple data displays, this parameters can
not be programmed.
Parameters which have different options in the Settings column of the
table can be adjusted. If there are no options, the screen simply dis-
plays the parameter data.
Parameter Description Setup
Overall Volt Current voltage of the battery connected to socket 6 -
Min. Minimum voltage of the battery connected to socket 6 since
the start -
Max. Maximum voltage of the battery connected to socket 6 since
the start -
1N - 6N Single cell voltage of the LiXX-battery connected to socket 6 -
Min. Minimum single cell voltage of the LiXX-battery connected to
socket 6 since the start -
Max Maximum single cell voltage of the LiXX-battery connected to
socket 6 since the start -
33611 General Air-Modul - Graupner HoTT 2.4 07
The descriptive text describes also primarily the button layout and operation of the SMART-BOX, followed by
the buttons of the mx-16 HoTT as an example in parentheses. Please note that the button layout for example
of the HoTT mc-transmitters (order No. 4758, 4759) may differ. Read the manual of your remote control
system to become familiar with the telemetry operation.

Parameter Description Setup
Sensor 1 Current voltage of sensor 1 connected to socket 5 -
Min./Max. Minimum/Maximum voltage of sensor 1 connected to socket 5
since the start -
Sensor 2 Current voltage of sensor 2 connected to socket 7 -
Min./Max. Minimum/Maximum voltage of sensor 2 connected to socket 7
since the start -
Current Current of the battery connected to socket 1 -
Max. Current Maximum current of the battery connected to socket 1 since
the start -
Capacity Used capacity of the battery connected to socket 1 since the
start -
Voltage Current voltage of the battery connected to socket 1 -
6.2 Sensor 1/2 voltage
6.3. Sensor 1/2 Temperature
Parameter Description Setup
Sensor 1 Current temperature of sensor 1 connected to socket 5 -
Min./Max. Minimum/Maximum temperature of sensor 1 connected to socket
5 since the start -
Sensor 2 Current temperature of sensor 2 connected to socket 7 -
Min./Max. Minimum/Maximum temperature of sensor 2 connected to socket
7 since the start -
DEC
INC
Sensor 1 : 14.92V
Min 11.53V
Sensor 2 :
Min 5.60V
Current :
Max Current :
Capacity :
Voltage :
Max 16.800V
7.49V
Max 8.40V
30.2 A
40.3 A
2345 mA
33.88V
DEC
INC
Sensor 1 : 25°C
Min 20°C
Sensor 2 :
Min 20°C
Max : 60°C
160°C
Max : 260°C
08 33611GeneralAir-Modul-GraupnerHoTT2.4

6.4. Vario Display
Parameter Description Setup
Altitude Current Altitude (Meter) -
Min. Minimum Altitude since the start (Meter) -
Max. Maximum Altitude since the start (Meter) -
Diff. / Sec Climb-Sink rate (Meter per sec.) - sinking is displayed with
neg. sign -
Diff. / 3s Climb-Sink rate (Meter per 3 sec.) - sinking is displayed with
neg. sign -
Diff. / 10s Climb-Sink rate (Meter per 10 sec.) - sinking is displayed with
neg. sign -
Note: The VARIO MODULE is set to the level 0 m after switching
on. The altitude displayed is not the absolute altitude above sea
level, but the relative height from the base!
In the rst row the climb-/sink rate in meter per second is displayed
on demand in synchronization with the warning tones alternating
with „Vario sensor“ , the vertical speed in meters per second. Sin-
king is represented by the negative sign.
6.5. RPM sensor / Fuel sensor
Parameter Description Setup
RPM (2 blade) Current motor speed in revolutions per minute and the preset
blade number -
Max. Maximum RPM since the start -
Min. Minimum RPM since the start -
Fuel Gauge Fuel Level since the start -
Fuel Usage Fuel Consumption since the start -
With connected speed sensor, the current engine rpm is determi-
ned. Therefore, you must rst specify how many blades (or mag-
nets with sensor order no. 33516) the propeller / rotor has to get
the correct rpm. In addition, you can set the minimum engine speed
at which the alarm should be triggered. See point 8.3. for setup.
When connected fuel sensor 33617/33618 of tank level and fuel
consumption is displayed.
Altitude :
Min. :
Max. :
Diff./Sec :
Diff./ 3s :
Diff./10s :
DEC 123.3 M
- 10 M
123 M
- 1.2 M
- 8 M
3 M
INC
RPM (2blade) :
Max. :
Min. :
Fuel Gauge : 0%
Fuel Usage : 0mL
DEC 7200
16300
3500
INC
33611 General Air-Modul - Graupner HoTT 2.4 09

7. Programming Warning thresholds
If you wish to carry out an adjustment, you must use the INC or DEC buttons (porq) above the screen to
select the desired parameter (e.g. page 2) by moving the arrow cursor (INC or qmoves the cursor down,
DEC oder pmoves it up). Simultaneously pressing the INC and DEC (SET) buttons switches the parameter
to be adjusted to inverse video (white on black); this indicates that it can be programmed: pressing the INC
(p) button at this point increases the value, pressing the DEC (q) button reduces the value. When the ad-
justment is complete, save the selected setting by pressing the INC and DEC (SET) buttons simultaneously;
the dark background now disappears in order to conrm this action.
Display (Set Warning): shows the various „display pages“ with the possible adjustable parameters and the
associated adjustable warning thresholds (page 1, page 2, etc.). To switch between pages, press the INC
or DEC key (porq).
Factory Set: choosing „YES“, will reset the settings of the variable module to factory settings.
The following parameters can be set separately for all displays:
Warning Time: sets whether and how long the warning signal is activated when reaching a certain value
for each display screen.
Repeat Time: sets how often the warning signal is activated when reaching a certain value for each display
screen.
Signal Tone: sets the signal tone melody. The warning sounds are combined with the warnings on the
display and the voice output. Therefore, they may not be changed.
Overview of the signal tones on page 18.
When a warning is activated, the corresponding message (eg. Min. Height) is shown inverted in the
rst row of the associated display, which then appears alternately with the display VARIO SENSOR
and the selected Signal Tone A - Z sounds.
You can stop the warning at any time by pressing one of the buttons on the top of the SMART-
BOX.
10 33611GeneralAir-Modul-GraupnerHoTT2.4
ESC ENTER
ESC
General Air-Module <>
>Set Warning :
Save Sensor?
Factory Set?
Ver: S 1.100
page 1
No
No
INC
DEC
ENTER
LiPo Cell Voltage >
Overall volt: 11.890V
Min 8.450V
1N 3.201V
3N 3.030V
5N 0.000V
Min 2.567V
Max 16.800V
2N 3.100V
4N 2.567V
6N 0.000V
Max 3.201V
General Air-Module <>
Set Warning :
>Save Sensor?
Factory Set?
Ver: S 1.100
page 1
No
No

33611 General Air-Modul - Graupner HoTT 2.4 11
Parameter Display page Description Setup
Warning Time Page 2 – page 24 Warning time OFF, 5, 10, 15, 20,
25, 30 sec.
Repeat Time Page 2 – page 24 Repeat time Always, 1, 2, 3, 4, 5
Minuten, One Time
Signal Tone Page 2 – page 24 Signal tone A - Z
Save Sensor Page 1 saves the setup to the General
Air-Module YES / NO
Factory Set Page 1 Reset to factory settings YES / NO
If you wish to carry out an adjustment (point 7.1 to 7.22) you must use the INC (p) or DEC (q) buttons
above the screen to select „page 1 - Save Sensor“. Simultaneously pressing the INC and DEC buttons
(SET) switches the parameter to be adjusted to inverse video (white on black); this indicates that it can be
programmed: pressing the INC (p) button at this point increases the value to YES. When the adjustment is
complete, save the selected setting by pressing the INC and DEC buttons (SET) simultaneously; the dark
background now disappears in order to conrm this action.
If you do not want to save the adjustments, select NO.
Warning:
• Do not carry out any programming work on the sensors while the model is ying, otherwise
there is a real risk that your model will y out of control while you are not concentrating on it!
• If your model is tted with two or more receivers, it is absolutely essential that you do not carry
out programming work during a ight, as this can alter the settings in the receivers to which no telemetry
equipment is connected; in the worst case this could result in the model crashing.
For this reason always carry out programming on the ground, and check that only the receiver with con-
nected sensors is powered on.
7.1. Minimum Cell Voltage (Page 2)
The voltage of the battery connected to socket 6 is monitored. Warning
threshold set between 2.5 and 4.2 V (0.1 V steps).
Factory setting: 3.3 V, Signal Tone: Q
The bottom line shows the current measured value.
INC
DEC
Min. Cell Voltage
>Set Warning :
Voltage/Cell :
Warning Time :
Repeat Time :
Signal Tone :
Min. Voltage :
page 2
3.3V
Off
Always
Q
0.000V

7.2. Minimum Cell Voltage Sensor 1 (Page 3)
The voltage of the battery connected to sensor 1 (socket 5) is monito-
red. Warning threshold set between 0 and 80.0 V (0.1 V steps).
Factory setting: 5.0 V, Signal Tone: R
7.3. Maximum Cell Voltage Sensor 1 (Page 4)
The voltage of the battery connected to sensor 1 (socket 5) is monito-
red. Warning threshold set between 0 and 80.0 V (0.1 V steps).
Factory setting: 30.0 V, Signal Tone: J
12 33611GeneralAir-Modul-GraupnerHoTT2.4
7.4. Minimum Temperature Sensor 1 (Page 5)
The temperature of the sensor 1 (socket 5) is monitored. Warning
threshold set between -20 and 200° C (1° C steps).
Factory setting: 0° C, Signal Tone: F
7.5. Maximum Temperatur Sensor 1 (Page 6)
The temperature of the sensor 1 (socket 5) is monitored. Warning
threshold set between -20 and 200° C (1° C steps).
Factory setting: 100° C, Signal Tone: H
DEC
INC
Min. Sensor1 Voltage
>Set Warning :
Min Voltage :
Warning Time :
Repeat Time :
Signal Tone :
Sensor 1 : 0.00V
page 3
5.0V
Off
Always
R
DEC
INC
Max. Sensor1 Voltage
>Set Warning :
Min Voltage :
Warning Time :
Repeat Time :
Signal Tone :
Sensor 1 :
page 4
30.0V
Off
Always
J
0.00V
DEC
INC
Min. Sensor1 Temp
>Set Warning :
Temperature :
Warning Time :
Repeat Time :
Signal Tone :
Sensor 1 :
page 5
0°C
Off
Always
F
00°C
DEC
INC
Max. Sensor1 Temp
>Set Warning :
Temperature :
Warning Time :
Repeat Time :
Signal Tone :
Sensor 1 :
page 6
100°C
Off
Always
H
00°C

33611 General Air-Modul - Graupner HoTT 2.4 13
7.6. Minimum Cell Voltage Sensor 2 (Page 7)
The voltage of the battery connected to sensor 2 (socket 7) is monito-
red. Warning threshold set between 0 and 80.0 V (0.1 V steps).
Factory setting: 5.0 V, Signal Tone: S
7.7. Maximum Cell Voltage Sensor 2 (Page 8)
The voltage of the battery connected to sensor 2 (socket 7) is monito-
red. Warning threshold set between 0 and 80.0 V (0.1 V steps).
Factory setting: 30.0 V, Signal Tone: K
7.8. Minimum Temperature Sensor 2 (Page 9)
The temperature of the sensor 2 (socket 7) is monitored. Warning
threshold set between -20 and 200° C (1° C steps).
Factory setting: 0° C, Signal Tone: G
7.9. Maximum Temperature Sensor 2 (Page 10)
The temperature of the sensor 2 (socket 7) is monitored. Warning
threshold set between -20 and 200° C (1° C steps).
Factory setting: 100° C, Signal Tone: I
DEC
INC
Min. Sensor2 Voltage
>Set Warning :
Min Voltage :
Warning Time :
Repeat Time :
Signal Tone :
Sensor 2 :
page 7
5.0V
Off
Always
S
0.00V
DEC
INC
Max. Sensor2 Voltage
>Set Warning :
Max Voltage :
Warning Time :
Repeat Time :
Signal Tone :
Sensor 2 :
page 8
30.0V
Off
Always
K
0.00V
DEC
INC
Min. Sensor2 Temp
>Set Warning :
Temperature :
Warning Time :
Repeat Time :
Signal Tone :
Sensor 2 :
page 9
0°C
Off
Always
G
00°C
DEC
INC
Max. Sensor2 Temp
>Set Warning :
Temperature :
Warning Time :
Repeat Time :
Signal Tone :
Sensor 2 :
page 10
100°C
Off
Always
I
00°C

7.10. Maximum Current (Page 11)
If the module is connected between the power supply and the motor or
receiver battery, the power consumption of the connected equipment is
measured. You can program the maximum peak current at which the
alarm should be triggered, to avoid to overload the motor or battery.
Monitors the battery connected to port 1. The warning threshold is ad-
justable up to 50 A in 0.1A steps.
Factory setting: 40 A, Signal Tone: W
7.11. Maximum used Capacity (Page 12)
If the module is connected between the power supply and the motor or
receiver battery, the power consumption of the connected equipment
is measured. You can program the max. used capacity at which the
alarm should be triggered, so you have enough remaining capacity for
a save landing.
Monitors the battery connected to port 1. The warning threshold is ad-
justable up to 30.000 mAh in 0.1 A steps.
Factory setting: 2000 mAh, Signal Tone: V
7.12. Minimum Voltage socket 1 (Page 13)
The voltage of the battery connected to socket 1 is monitored. Warning
threshold set between 0 and 80.0 V (0.1 V steps).
Factory setting: 5.0 V, Signal Tone: P
7.13. Maximum Voltage socket 1 (Page 14)
The voltage of the battery connected to socket 1 is monitored. Warning
threshold set between 0 and 80.0 V (0.1 V steps).
Factory setting: 30.0 V, Signal Tone: X
14 33611GeneralAir-Modul-GraupnerHoTT2.4
DEC
INC
Max. Current
>Set Warning :
Max Current :
Warning Time :
Repeat Time :
Signal Tone :
Current :
page 11
40A
Off
Always
W
0.0A
DEC
INC
Max. Used Capacity
>Set Warning :
Max Capacity :
Warning Time :
Repeat Time :
Signal Tone :
Capacity :
page 12
2000mA
Off
Always
V
0 mA
DEC
INC
Max. Power Voltage
>Set Warning :
Max. Voltage :
Warning Time :
Repeat Time :
Signal Tone :
Voltage :
page 14
30.0V
Off
Always
X
0.00V
DEC
INC
Min. Power Voltage
>Set Warning :
Min Voltage :
Warning Time :
Repeat Time :
Signal Tone :
page 13
5.0V
Off
Always
A

33611 General Air-Modul - Graupner HoTT 2.4 15
7.14. Minimum Altitude (Page 15)
The Vario module is integrated into the General Air-Module, here you
have no additional sensors.
Minimum altitude of the model during operation, warning threshold set
between -500 and +3000 m in 1 m steps (based on the starting altitude
0 m)
Factory setting: 20 m, Signal Tone: O
7.15. Maximum Altitude (Page 16)
The Vario module is integrated into the General Air-Module, here you
have no additional sensors.
Maximum altitude of the model during operation, warning threshold set
between -500 and +3000 m in 1 m steps (based on the starting altitude
0 m)
Factory setting: 500 m, Signal Tone: Z
7.16. Sink rate per second (Page 17)
The Vario module is integrated into the General Air-Module, here you
have no additional sensors.
Sink rate/s (Negative Difference 1): Sink rate of the model per sec.
in Meter, warning threshold set between -50 and 0 m (based on the
starting altitude 0 m)
Factory setting: 10 m/Sec., Signal Tone: C
7.17. Sink rate per 3 seconds (Page 18)
The Vario module is integrated into the General Air-Module, here you
have no additional sensors.
Sink rate/s (Negative Difference 2): Sink rate of the model per 3 sec.
in Meter, warning threshold set between -500 and 0 m (based on the
starting altitude 0 m)
Factory setting: 1 m/3 Sec., Signal Tone: B
DEC
INC
Min. Altitude
>Set Warning :
Min. ALT :
Warning Time :
Repeat Time :
Signal Tone :
Altitude :
page 15
20m
Off
Always
O
0.0m
DEC
INC
Max. Altitude
>Set Warning :
Max. ALT :
Warning Time :
Repeat Time :
Signal Tone :
Altitude :
page 16
500m
Off
Always
Z
0.0m
DEC
INC
Negative Difference2
>Set Warning :
Diff / 3 Sec :
Warning Time :
Repeat Time :
Signal Tone :
Diff./ 3Sec. :
page 18
- 1 m
Off
Always
B
0.0m
DEC
Negative Difference1
>Set Warning :
Diff / Sec :
Warning Time :
Repeat Time :
Signal Tone :
Diff./Sec. :
page 17
- 10 m
Off
Always
C
0.0m
INC

16 33611GeneralAir-Modul-GraupnerHoTT2.4
7.18. Climb rate per second (Page 19)
The Vario module is integrated into the General Air-Module, here you
have no additional sensors.
Climb rate/s (Positive Difference 1): Climb rate of the model per sec.
in Meter, warning threshold set between 0 and 50 m (based on the
starting altitude 0 m)
Factory setting: 10 m/Sec., Signal Tone: N
7.19. Climb rate per 3 seconds (Page 20)
The Vario module is integrated into the General Air-Module, here you
have no additional sensors.
Climb rate/3s (Positive Difference 2): Climb rate of the model per sec.
in Meter, warning threshold set between 0 and 500 m (based on the
starting altitude 0 m)
Factory setting: 1 m/3 Sec., Signal Tone: M
7.20. Minimum RPM (Page 21) Monitors the optional speed sensor order no. 33615 or 33616 connec-
ted to socket 9.
With connected speed sensor, the current engine rpm is determined.
Therefore, you must rst specify how many blades the propeller / rotor
has to get the correct rpm (see Section 7.3). In addition, you can set the
minimum engine speed at which the alarm should be triggered.
Blade Number: adjustable from 1 to 6 blades
The warning threshold is adjustable from 0 to 200.000 rpm (1 blade)
with 10 rpm steps.
Factory setting: 500 rpm, Signal Tone: T
7.21. Maximum RPM (Page 22)
Monitors the optional speed sensor order no. 33615 or 33616 connec-
ted to socket 9.
The warning threshold is adjustable from 0 to 200.000 rpm (1 blade)
with 10 rpm steps.
Factory setting: 7000 rpm, Signal Tone: Y
DEC
INC
Positive Difference1
>Set Warning :
Diff / Sec :
Warning Time :
Repeat Time :
Signal Tone :
Diff./Sec. :
page 19
10 m
Off
Always
N
0.0m
DEC
INC
Positive Difference2
>Set Warning :
Diff / 3 Sec :
Warning Time :
Repeat Time :
Signal Tone :
Diff./ 3Sec. :
page 20
1 m
Off
Always
M
0.0m
DEC
INC
Maximum RPM
>Set Warning :
Maximum rpm:
Warning Time :
Repeat Time :
Signal Tone :
RPM ( 2 ) :
page 22
7000
Off
Always
Y
0
DEC
INC
Minimum RPM
>Set Warning :
Minimum rpm :
Warning Time :
Repeat Time :
Signal Tone :
RPM ( 2 ) :
page 21
500
Off
Always
T
0

33611 General Air-Modul - Graupner HoTT 2.4 17
8. Setup Displays
8.1. Calibration of the temperature sensors
Go to the User Setup screen of the General Air-Module as in the diagram shown above. Select the User
Setup display as shown in the diagram. Press the INC and DEC buttons on the SMART-BOX (resp. SET)
simultaneously and select User Setup page 2. You can now calibrate the temperature of the sensors 1 and 2
in the range of -10 to +10 ° C to increase the accuracy of the display. To save the settings, go back to page
1 and choose ,Save Sensor‚ YES.
General Air-Module <
>User Setup :
Save to Sensor?
Factory Set?
page 1
No
No
INC + DEC page 1
No
No
INC + DEC INC
page 2
30°C
30°C
DEC
General Air-Module <
>User Setup :
Save Sensor?
Factory Set?
Adjust Temperature
>User Setup :
Sensor1 Temp:
Sensor2 Temp:
ESC
ENTER
ESC
General Air-Module <>
>Set Warning:
Save Sensor?
Factory Set?
Ver: S 1.100
page 1
No
No
ENTER
LiPo Cell Voltage >
Overall volt: 11.890V
Min 8.450V
1N 3.201V
3N 3.030V
5N 0.000V
Min 2.567V
Max 16.800V
2N 3.100V
4N 2.567V
6N 0.000V
Max 3.201V
ENTER
ESC
General Air-Module <
>User Setup:
Save Sensor?
Factory Set?
page 1
No
No
7.22. Fuel reserve warning (Page 23)
monitors connected to socket 10 optional precision fuel sensor No.
33618 or 33619.
The warning threshold is adjustable from 0 to 100%. in 1% increments.
Factory setting: 30% warning. U
DEC
INC
Minimum Fuel
>Set Warning :
Minimum Fuel:
Warning Time :
Repeat Time :
Signal Tone :
Fuel Gauge :
page 23
30%
Off
Always
U
0%

8.2. Continous vario
The module provides two vario functions:
1. Continous Vario: is automatically launched when the menu telemetry VOICE TRIGGER, VARIO is a
switch has been set and then the graphical display of the ELECTRIC AIR MODULE is activated. This
function CONTINOUS VARIO shows the climb or descent of the model permanently by rising or falling
beeps.
2. Sensitivity Vario (only with the modules M-G1/M-G2, mx-12/16 order No. 4754/4755 or mc-19/22
HoTT 4758/4759) - output only trough modules buzzer: The climb or descent rate is predetermined
by the parameter sensitivity (SENSITIVITY). The sensitivity must be programmed before operation. You
can choose between: (OFF), 0.5 m / sec 3, 1 m / 3 s, 0.5 m / sec,. 1 m / sec. or 3 m / sec. Factory setting
is 1 m / sec. You should use one of these at the same time.
Sensivity Setup
Select the User Setup display as shown in the diagram. Press the INC
and DEC buttons on the SMART-BOX (resp. SET) simultaneously and
select User Setup page 3. To save the selected settings, go back to
page 1 and choose ,Save Sensor‚ YES.
INC
page 3
1 m/ 3s
DEC
Select Sensitivity
>User Setup :
Sensivity :
Average Num : 20
Parameter Description Setup
User Setup Setup page 1 - 2 (page)
Save to Sensor Save the setup to the GeneralAir-Module YES / NO
Factory Set Reset to factory settings YES / NO
Sensitivity Sensitivity - Continous vario OFF, 0.5m/3s; 1 m/3s; 0.5 m/s;
1m/s or 3.0 m/s
Factory setting 1 m/s
Average Number Number of measurements of the sensor per
Sec. 4 - 40 Factory setting: 20
SENSITIVITY: select the climb or sink rate at which the Beep is activated.
Climbing is indicated by a high tone, sinking by a deep tone. The higher / lower the tone sounds, the greater/
smaller is the climb or sink rate.
Note: when SENSITIVITY is set to OFF, no beeps or voice announcements will be displayed.
See the following table.
If the setting is for example 1 m/sec., the tone (A) sounds when the model climbs more than 1 m per second.
Is the rate more than 2 m, the next higher note (B) sounds, etc. The actual climb or descent rate is displayed
in the Vario screen alternately in the top row. This display responds faster than the „Diff.“- information the
display below, so the values can differ.
18 33611GeneralAir-Modul-GraupnerHoTT2.4

Climbing/sinking tone overview:
AVERAGE NUMBER: Number of measurements per second, is used to adjust the accuracy of the sensor.
More measurements increase the accuracy, while fewer measurements increase display speed.
Recommendation:
Sensitivity 0.5 m: approx. 20 measurements per Sec.
Sensitivity 1 m: approx. 4 measurements per Sec.
Climbing or sinking according to the setting „Sensitivity“ in the User setup is displayed alternately on the
top line in meter per sec., the associated melody also sounds. This display responds faster than the „Diff.“-
information the display below, so the values can differ.
Altitude level Beep:
when the following altitudes (starting from the starting altitude 0 m) are reached, the following tones will
sound:
20 / 40 / 60 / 80 / 100 m: low tone once (20 m) up to ve times (100 m)
200 / 400 / 650 / 800 / 1000 m: high tone once (200 m) up to ve times (1000 m)
5 m (E)
1 m (A)
2.5 m/3 sec. ; 5 m
2.5 m/sec. ; 5 m/sec. ; 15 m/sec.
/3 sec.
Climb rate:
4 m (D) 2 m/3 sec. ; 4 m
2 m/sec. ; 4 m/sec. ; 12 m/sec.
/3 sec.
3 m (C) 1.5 m/3 sec. ; 3 m
1.5 m/sec. ; 3m/sec.;- 9 m/sec.
/3 sec.
2 m (B) 1 m/3 sec. ; 2 m
1 m/sec. ; 2 m/sec. ; 6 m/sec.
/3 sec.
0.5 m/3 sec. ; 1 m
0.5 m/sec. ; 1 m/sec.;- 3 m/sec.
/3 sec. - 5 m
- 1 m
- 2 m
- 3 m
- 4 m
- 0.5 m/3 sec. ; - 1 m
- 0.5 m/sec. ; - 1 m/sec. ; - 3 m/sec.
/3 sec.
- 1 m/3 sec. ; - 2 m
- 1 m/sec. ; - 2 m/sec. ; - 6 m/sec.
/3 sec.
- 1.5 m/3 sec. ; - 3 m
- 1.5 m/sec. ; - 3m/sec. ; - 9 m/sec.
/3 sec.
- 2 m/3 sec. ; - 4 m
- 2 m/sec. ; - 4 m/sec. ; - 12 m/sec.
/3 sec.
- 2.5 m/3 sec.; - 5 m
- 2.5 m/sec. ; - 5 m/sec. ; - 15 m/sec.
/3 sec.
Sink rate:
33611 General Air-Modul - Graupner HoTT 2.4 19
8.3. Blade Number
With connected speed sensor, the current engine rpm is determined.
Therefore, you must rst specify how many blades (or magnets with
sensor order no. 33516) the propeller / rotor has to get the correct rpm.
In addition, you can set the minimum engine speed at which the alarm
should be triggered.
Blade Number: adjustable from 1 to 6 blades
INC
page 4
2
DEC
Blade / Magnet Number
>User Setup :
Blade Number:

Connecting the components:
• Use the three-core lead to connect the telemetry socket T on the General Air module to the telemetry
socket T on the receiver. Connect the electronic speed controller to the socket CO.
• Use a three-core lead to connect the socket CI on the General Air module to the recei-
ver socket to which the electronic speed controller would usually be connected.
• Currentcontrolcanbeactivatedanddisabledfromthetransmitter:forthisfunctionyouneedonevacantswit-
Battery (IN)
Telemetry socket (T)
connect to telemetry so-
cket of the receiver
Electronic speed control
(CO)
Signal Input (CI)
ESC input from receiver Balancer connector LiXX
for single cell monitoring when using a LiXX-
battery
Current control switch (CS)
ON/OFF per switching chan-
nel
to drive motor (OUT)
Note: the permitted maxi-
mum current for the lower
JR sockets is 15 A! This so-
cket may only be used if the
model’s power system never
exceeds this value. If you
ignore this, the sensor circuit
board could be damaged!
20 33611GeneralAir-Modul-GraupnerHoTT2.4
Parameter Description Setup
Current Maximum current 0 - 60 A
On [XXXXus] Current control activated 500 - 2500 us
On Method Current control enabled, is the current consumption
above the CURRENT value, the ESC goes to STOP po-
sition until to the current consumption drops again
Current control disabled, IN signal CI is outputted as
CO without modication
ON / OFF
Stop ESC position when current consumption above the
CURRENT value 500 - 2500 us
To save the settings, then go back to page 1 and choose among „Save sensor“ YES.
8.4. Current Control
In this display you can determine and limit the maximum current drawn
by the model’s power system.
If the model’s current drain is above the permitted peak current for the
General Air module, it is essential to use this function to prevent dama-
ge to the module or a break in the power supply, as this would be likely
to cause the model to crash (see also Point 3: connecting the sensors).
INC
page 5
40 A
DEC
Current Control
>User Setup :
Current :
On [1500us] : 1500us
On Method : On
Stop[1100us] : 1100us