Graupner Hott m-g2 User manual

33302 RF Module M-G2 HoTT SD mx-22/24/mc-24

GRAUPNER GmbH & Co. KG – Postfach 1242 – 73230 Kirchheim/Teck – www.graupner.de

CONTENT:

1. Introduction..............................................................................................................01

2. Preparing the systems.............................................................................................01

3. Installation mx-series...............................................................................................02

4. Installation mc-series...............................................................................................03

5. General Note..............................................................................................................05

5.1. Transmitter Display (TX Display)................................................................................05

5.2. Receiver Display.........................................................................................................07

5.2.1.Receiver Data View (RX DATAVIEW).........................................................................07

5.2.2.Servo Data (RX SERVO)............................................................................................08

5.2.3.Failsafe Setup (RX FAILSAFE)..................................................................................09

5.2.4.Mixer Setup (RX FREE MIXER - WING MIXER)......................................................11

5.2.5.Expo functions (RX CURVE)......................................................................................12

5.2.6.Servo test (RX SERVOTEST)....................................................................................13

6. Functions.....................................................................................................15

6.1. Binding.............................................................................................................15

6.1.1.Binding multiple receivers in one model...................................................................15

6.2. Range checking..........................................................................................................15

6.3. Fail Safe Function .......................................................................................................16

6.4. Country setting...........................................................................................................17

6.5. Low voltage warning..................................................................................................17

6.6. Range warning...........................................................................................................17

6.7. DATA socket...............................................................................................................17

6.8. Data storage...............................................................................................................18

6.9. Earphone socket.........................................................................................................18

7. Firmware Updates....................................................................................................19

7.1. Update process..........................................................................................................19

8. Warranty....................................................................................................23

These operating instructions are part of this product. They contains important notes to the operation and

handling. Please take this into consideration when you pass on the product to third parties. Neglect of

the operating instructions and the safety instructions lead to expiring the warranty.

Graupner constantly work on the advancement of all remote control systems; changes of the scope of

delivery in form, technology and equipment we must reserve ourselves therefore. Please have under-

standing 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. INTRODUCTION

Many thanks for purchasing the Graupner M-G2 HoTT 2.4 module. This module is a direct replacement

for the standard RF module ﬁtted to your mx-22, mx-24, and mc-18, mc-20, mc-24 transmitters.

Please read right through these instructions before you attempt to install and use the system.

Installation requirements

We recommend that you have the module installed by a Graupner Service Centre. It is possible for

the modeller to carry out the conversion himself provided that he has a certain amount of manual skill,

but the transmitter’s ﬁrmware needs to be updated for the ﬁrst time in order to integrate the telemetry

display - also the Telemetry PCB Order-No. 33306 is necessary - (mx-24 and mc-24 only), and this can

only be carried out by the Graupner Service Centre Germany. Please note that we cannot offer a gua-

rantee for all failures which have been caused by incorrect installation, if you carry out the conversion

work yourself.

2. PREPARING THE SYSTEM

mc-series

First remove your previous RF module. For details of this procedure please refer to the appropriate

chapter in the operating instructions supplied with your radio control system. If you have previously

used a 35 MHz system, you will also need to replace the telescopic aerial with the Graupner HoTT aerial

supplied in the set.This requires the use of the aerial conversion kit for tray-mounted transmitters, Order

No. 23049, and the aerial, Order No. 33801 - see Figs. 5 to 10.

If you have previously used a 2.4 GHz system such as Graupner iFS, all you need to do is unplug the

existing aerial from the module.

Manual Module M-G2

Order-No. 33302

01 Manual Module M-G2 33302

mx-series

First remove your previous RF module. For details of this

procedure please refer to the appropriate chapter in the ope-

rating instructions supplied with your radio control system.

If you have previously used a 35 MHz system, you will also

need to replace the telescopic aerial with the Graupner HoTT

aerial supplied in the set.

This is the procedure: ﬁrst unscrew the telescopic aerial from

the transmitter, then pass the aerial wire attached to the

HoTT aerial through the opening, working from the top. The

mounting adapter (1) features a small notch on one side (see

detail), through which the aerial wire is routed; this must be

on the left-hand side, as seen from the front. Fit the adapter

in the opening, followed by the tubular spacer (2), with the

hole for the retaining screw facing the rear. Now secure the

adapter by tightening the gold-coloured M4 screw (4) fully.

The ﬁnal step is to ﬁt the aerial on top and secure it with the

black self-tapping screw.

If you have previously used a 2.4 GHz sys-

tem such as Graupner iFS, all you need to

do is unplug the existing aerial from the mo-

dule.



1 6

Manual Module M-G2 33302 02

3. INSTALLATION MX-SERIES

2. Undo the retaining screws and remove the transmitter’s back panel.

3. Now drill a hole about 5 mm in diameter in the

transmitter case, precisely in line with the ope-

ning in the transmitter module case (Fig. 2).

Carefully remove all rough edges from the

hole. Re-attach the transmitter back panel, ﬁt-

ting the aerial connector through this hole.

Fig. 2

Fig. 3

4. The module can now be installed in the trans-

mitter: ensure that the connector contacts are

correctly positioned, otherwise they could be

damaged when you plug the module in; do not

use force! The aerial connector can now be in-

serted in the socket on the module using no

more than light pressure. Ensure that it enga-

ges fully, i.e. there must be no chance of it co-

ming loose when the system is operating (Fig.

3).

5. Now all you have to do is re-attach the module

cover: engage the two lugs on the underside of

the module case, then ﬁt the two screws to se-

cure it. Check that it is correctly located (Fig.

4).

JOB DONE!

Fig. 4

22 mm

1. Open the M-G2 module by undoing the two

screws on the underside. Open up the cover by

folding it downward.

Abb. 1

Fig. 1

4. INSTALLATION MC-SERIES:



03 Manual Module M-G2 33302

Fig. 5

Fig. 6

Fig. 7

Fig. 8

Fig. 9

Fig. 10

Fig. 11

Fig. 12

Use the

white washer

securing the

telescopic

antenna



1. Open the module M-G2 with the two screws on the back. Open up the cover by folding it downward.

2. The module can now be installed in the transmitter: ensure that the connector contacts are correctly

positioned, otherwise they could be damaged when you plug the module in; do not use force! (Fig.

12 - 1)

3. The aerial connector can now be inserted in the socket on the module using no more than light pres-

sure. Ensure that it engages fully, i.e. there must be no chance of it coming loose when the system is

operating (Fig. 12 - 2).

4. Now all you have to do is re-attach the module cover: engage the two lugs in the left-hand side of the

module case, then ﬁt the two screws to secure it. Check that it is correctly located (Fig. 13).

5. We recommend that you cut openings for the BIND / RANGE button, earphone socket and DATA

socket. The opening for the earphone socket is really essential, so that the earphones can conveni-

ently be inserted (Fig. 14).

6. Now all that remains is to re-attach the transmitter back panel.

7. Finally go to the transmitter „basic setup model“ menu and choose „modulation“ PPM 18 (for max. 9

servos) or PPM 24 (for max. 12 servos). Also when using the channel mapping with more than 9

channels choose PPM 24. JOB DONE!

Manual Module M-G2 33302 04

Ø 8

All dimensions in mm.

TOP

Fig. 14

Fig. 13

5. GENERAL NOTE

When switching on or adjusting the radio control system it is essential to keep the transmitter aerial at

least 15 cm away from the receiver aerials at all times. If the transmitter aerial is too close to the receiver

aerials, the receiver will be overloaded, causing the red LED on the receiver to light up. The transmitter

responds by emitting a beep once every second; the red LED also goes out. The radio control system

is now in Fail-Safe mode.

If this should occur, simply increase the distance between the aerials until the audible warning signal

ceases, and the red LED on the transmitter lights up again; at the same time the red LED on the receiver

should go out.

Please note: if you wish to switch the transmitter on again just after switching it off, please wait at least

ﬁve seconds to ensure that the transmitter has time to shut down completely. If you neglect to do this,

there will be no connection between transmitter and receiver: you will hear a beep repeated about once

per second, and at the same time the red LED on the transmitter will go out, and the LED on the receiver

will ﬂash red.

5.1. Transmitter Display (TX-Display)

05 Manual Module M-G2 33302

The telemetry can be programmed directly on all HoTT transmitters whose telemetry menu is integrated

directly into the transmitter’s screen (this is possible for mc/mx-24 only after a ﬁrmware update). If this

update is not carried out, programming is only possible using the SMART-BOX.

The SMART-BOX, Order No. 33700, must be used for programming if you are using any of the

following transmitters: mx-22, Order No. 4801 / 4802, mc-19, Order No. 4821, mc-22, Order No. 4818

and mc-18, Order No. 4835.

The following instructions describe the method using the SMART-BOX; the table below shows variations

which apply to the Telemetry menu for the various models of transmitter:

SMART-BOX mx-12/16/20/32 HoTT mc-19/mc-22/mc-24/mx-24 HoTT

ENTER ENTER

ESC CLEAR

INC scroll: value:  scroll: push Rotary + value: Rotary 

DEC scroll: value: scroll: push Rotary + value: Rotary 

INC+DEC SET push Rotary

The TX screen appears when

- the SMART-BOX is connected to the DATA socket and the ﬁrst line „SETTING

AND DATAVIEW“ is activated by pressing the ENTER button

- transmitters with integrated telemetry: the menu item „telemetry“ is selected

press the Rotary

TX: SD-card log ON

A: 11.3 V M: 11.4V m: 11.2V

VARIO TONE: ON

RANGE TEST : OFF 90s

RX BIND : BIND

ALARM VOLT : 9.3V

COUNTRY :GENERAL

MULTIC1: 00 MULTIC2: 00

Display Description Setup

SD-card log Shows the saving process on the SD card ON /OFF automatic

A = TX VOLT Current operating voltage (V) -

M = MAXIMUM

VOLT Maximum operating voltage (since the last power

on - V) -

m = MINIMUM

VOLT Minimum operating voltage (since the last power

on - V) -

RX BIND Binding the receiver BINDING

ALARM VOLT voltage setup for transmitter low voltage warning

beep 4 – 15 V in steps of 0.5 V

Factory setting 9.3 V

COUNTRY Country setting GENERAL / FRANCE

RANGE TEST indicates if the range test is engaged, the remai-

ning

time also appears

OFF / ON

MULTIC 1 / 2

Multichannel 1 or 2 (Nautic-Expert-Module Order

No. 4108)

No. 4108) Channel select 1-X

(+ PERIOD: 20 msec,

CH OUTPUT TYPE:

SAME)

Manual Module M-G2 33302 06

Transmitter low-voltage warning (ALARM VOLT): you can adjust the low voltage threshold at which

the alarm (continuous beeping) is triggered; the available range is 4 - 15 V.

When the alarm is triggered, “VOLT-E” ﬂashes at top right in the SMART-BOX transmitter display, and

the parameters ACTION VOLT and ALARM VOLT are displayed in inverse form.

Please note: the transmitter’s own low-voltage warning (beep), as set in the “General settings”

menu, is triggered independently of the value set under TX-Display!

Binding a receiver (RX BIND): refer to chapter 6.1. Binding

SD card function (SD SAVE): refer to chapter 6.8. Data storage

Country selection (COUNTRY): The Country setting is present in order to cater for various directives

(FCC, ETSI, IC etc.). The HoTT 2.4 radio system features a restricted frequency band for France. If

you wish to use the RC system in France, the country setting on the transmitter must be set to “France”

mode, as described. It is essential not to use the Universal/EUROPE mode. Factory setting is GENE-

RAL. See also point 6.4.

Range checking (RANGE TEST):

switches the range test on or off, the remaining time is displayed. The display also works if the range

check is started with the BIND / RANGE button on the transmitter. See also point 6.2.

Multichannel 1 / 2 (MULTIC 1 / 2: Multi-channel function for the use with the Nautic-Expert-Module

order no. 4108. Up to 2 multi-channel channels can be used, the appropriate channels must be set in

the display under MultiC. If no Nautic module is used, set MULTIC to 00.

Note: The cycle time (PERIOD) must be set to

20 msec, the channel sequence (CH OUTPUT

TYPE) to SAME so that the function is activated!

Parameters which have different options in the Settings column of the table can be adjusted using the

SMART-BOX. If there are no options, the screen simply displays the parameter data. If you wish to carry

out an adjustment, you must use the INC or DEC buttons above the screen to select the desired para-

meter (e.g. ALARM VOLT) by moving the arrow cursor (INC moves the cursor down, DEC moves it up).

Simultaneously pressing the INC and DEC buttons switches the parameter to be adjusted to inverse

video (white on black); this indicates that it can be programmed: pressing the INC button at this point

increases the value, pressing the DEC button reduces the value. When the adjustment is complete,

save the selected setting by pressing the INC and DEC buttons simultaneously; the dark background

now disappears in order to conﬁrm this action.

Please note: the labeling of the arrows of the following displays corresponds the top buttons on the

SMART-BOX.

RX SERVO < >

OUTPUT CH: 01

REVERSE : ON

CENTER : 1500usec

TRIM : -000usec

TRAVEL- : 100%

TRAVEL+ : 100%

PERIOD : 20msec

RX SERVO TEST <

ALL-MAX : 2000usec

ALL-MIN : 1000usec

TEST : STOP

ALARM VOLT : 3.8V

ALARM TEMP+ : 70°C

ALARM TEMP- : 10°C

CH OUTPUT TYPE: SAME

DEC

INC

RX DISPLAY

ENTER

INC + DEC

ESC

TX: SD-card log ON

A: 11.3 VM: 11.4V m: 11.2V

VARIO TONE: ON

RANGE TEST : OFF 90s

RX BIND : BIND

ALARM VOLT : 9.3V

COUNTRY :GENERAL

MULTIC1: 00 MULTIC2: 00

TX: SD-card log ON

A: 11.3 VM: 11.4V m: 11.2V

VARIO TONE: ON

RANGE TEST : OFF 90s

RX BIND : BIND

ALARM VOLT : 9.3V

COUNTRY :GENERAL

MULTIC1: 00 MULTIC2: 00

5.2. RECEIVER DISPLAY

5.2.1 Receiver Data View (RX DATAVIEW)

If you wish to switch to the receiver data display, press the ENTER button repeatedly until RX DATA-

VIEW appears on the screen.

Please note: menus 3.2.1 to 3.2.6 can only be selected when the receiver is

switched on. When you switch the receiver on, it may take a few seconds befo-

re 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 using the top

buttons, since all the settings are transmitted directly to the receiver by wire-

less means.

In the receiver data view display settings can not be made.

Signal quallity (S-QUA): shows the signal quality in %

Receive performance (S-dBm): the receive performance is sent “live” to the SMART-BOX via the

receiver’s downlink channel. Note: the receive performance is shown as a negative value, i.e. a value

approaching zero is the maximum (= best reception); the lower the value falls, the worse the receive

performance.

This value is particularly important during the range-check procedure carried out before ﬂying the mo-

del.

Please read the corresponding section in the RC system instructions relating to range-checking.

Carry out a range-check before every ﬂight, simulating all servo movements which will occur in ﬂight: the

range must be at least 50 m on the ground when the transmitter is set to range-check mode; to guaran-

tee safe ﬂying, the value displayed under S-dBm in the DATAVIEW display should be at least -80 dBm.

If the value is lower (e.g. -85 dBm) you should not even consider ﬂying your model: check the receiver

installation and the power supply systems in your model and radio control system.

When operating your model this value should not fall below -90 dBm. If it does, you should reduce the

distance between yourself and the model. However, under normal circumstances the audible range

warning (see below) will be triggered before the value falls to this level, in order to ensure safe ope-

rations.

Signal strenght (S-STR): indicates the signal strenght in %.

An audible range warning (continuous beeping at one-second intervals) is always emitted as soon

as the receiver signal in the downlink channel falls to the pre-set threshold. Since the transmitter has a

much higher transmitting power than the receiver, it is still possible to operate the model safely, but in

the interests of security you should always reduce the distance to the model until the audible warning

stops.

Receiver temperature (R-TEMP): it is important that the temperature of your receiver always stays

within the approved range under all ﬂight conditions (ideally between 10 and 55°C; please refer to your

RC system instructions).

Display Description Setup

S-QUA Signal quality in % -

S-dBm Receive performance in dBm -

S-STR Signal strenght in % -

R-TEM Receiver temperature in °C -

L PACK TIME indicates the duration of signal loss of the longest data packet du-

ring transmission from transmitter to receiver; stated in msec -

R-VOLT Actual receiver operating voltage in Volt -

L.R-VOLT Minimum receiver operating voltage since it was last switched on;

stated in Volt -

Sensor 1 the values of the optional telemetry sensor 1 in Volt and °C -

Sensor 2 the values of the optional telemetry sensor 2 in Volt and °C -

07 Manual Module M-G2 33302

RX DATAVIEW >

S-QUA 100% S-dBm -49dBm

S-STR 065% R-TEM. +30°C

L PACK TIME 00005msec

R-VOLT : 05.9V

LR-VOLT : 05.8V

SENSOR1: 00.0V 00°C

SENSOR2: 00.0V 00°C

The limit values for receiver temperature which trigger a warning can be set in the RX SERVO TEST

display under ALARM TEMP+ (50 – 80°C) and ALARM TEMP- (-20 – +10°C).

If the receiver temperature rises above the maximum value or falls below the minimum, the unit genera-

tes an audible warning (continuous beeping). At the same time all the Smartbox receiver displays show

a ﬂashing “TEMP.E” at top right, and the parameter R-TEM is shown in inverse form in the receiver data

display (RX DATAVIEW).

Data packets (L PACK TIME): indicates the duration of signal loss of the longest data packet during

transmission from transmitter to receiver, stated in msec. In practice this equates to the longest period

which the RC system has spent in fail-safe mode.

Operating voltage (R-VOLT): it is essential to monitor the operating voltage of the receiver constantly.

If it is too low, you must never launch your model or continue ﬂying it.

The receiver low voltage warning can be adjusted in the RX SERVO TEST display under ALARM VOLT;

the available range is 3.0 to 6.0 Volt. If battery voltage falls to the threshold level, an audible signal

(continuous beeping) is emitted, and “VOLT.E” ﬂashes at top right in all the Smartbox receiver displays.

At the same time the parameter R-VOLT is shown in inverse form in the receiver data display (RX DA-

TAVIEW).

Minimum operating voltage (L.R-VOLT): displays the lowest receiver operating voltage since the last

time the receiver was switched on. If this voltage differs signiﬁcantly from the actual operating voltage

R-VOLT, it is likely that the servos are placing an excessive load on the receiver battery, resulting in vol-

tage collapses. If this should occur, you should consider ﬁtting a larger or more robust receiver battery

in order to obtain maximum operating security.

Telemetry sensor 1 / 2 (SENSOR 1 / SENSOR 2): if these optional sensors are connected, their data

(Voltage / Volt and temperature / °C) is displayed live on the screen.

5.2.2

Servo data (RX SERVO)

To switch to the servo data display, press the ENTER button repeatedly until RX SERVO appears on

the screen.

Display Description Setup

OUTPUT CH Channel select 1 – X, depends on the connected

receiver

REVERSE Servo reverse OFF / ON

CENTER Neutral point in usec. If active (highlighted), according

to transmitter control position

TRIM Trim position in usec. -120 – 120 usec

TRAVEL- Servo travel in %, negativ 30 – 150%

TRAVEL+ Servo travel in %, positiv 30 – 150%

PERIOD Cycle time in msec. 10 or 20 msec

Manual Module M-G2 33302 08

RX DATAVIEW >

S-QUA 100% S-dBm -49dBm

S-STR 065% R-TEM. +30°C

L PACK TIME 00005msec

R-VOLT : 05.9V

LR-VOLT : 05.8V

SENSOR1: 00.0V 00°C

SENSOR2: 00.0V 00°C

RX SERVO < >

OUTPUT CH: 01

REVERSE : ON

CENTER : 1500usec

TRIM : -000usec

TRAVEL- : 100%

TRAVEL+ : 100%

PERIOD : 20msec INC + DEC

INC + DEC

INC

DEC

ENTER

ESC

RX SERVO < >

OUTPUT CH: 01

REVERSE : ON

CENTER : 1500usec

TRIM : -000usec

TRAVEL- : 100%

TRAVEL+ : 100%

PERIOD : 20msec

Channel select (OUTPUT CH): here you select the desired channel; the remainder of the settings in

this display only affect the channel which you select at this point.

Servo reverse (REVERSE): sests the direction of rotation of the connected servo

Normal: REVERSE OFF

Reverse: REVERSE ON

Servo centre (CENTER): The “CENTRE” line displays the current pulse width in μs of the control chan-

nel selected in the “OUTPUT CH” line. The displayed value varies according to the current position of

the transmitter control which affects this control channel, and also its trim position. A pulse width of 1500

μs corresponds to the standard centre position, and therefore the usual servo centre setting.

To change this value, select the “CENTRE” line and touch the INC + DEC buttons simultanously. Move

the corresponding transmitter control to the desired position, and touch the INC + DEC buttons again to

store the current transmitter control position. This position is now stored as the new neutral position.

Trim position (TRIM): The purpose of the “TRIM” line is to provide ﬁne adjustment of the neutral po-

sition of a servo connected to the control channel selected in the “OUTPUT CH” line. Adjustments are

made in 1 μs increments using the INC or DEC buttons. The value in the “CENTRE” line can be adjusted

over the range +/- 120 μs around the TRIM value set here.

Servo travel (TRAVEL +/-): this function is used to adjust the maximum servo travel (control surface

travel) of the connected servo. The adjustment is available separately for each direction

Cycle time (PERIOD): at this point it is possible to deﬁne the speed of the servos’ response to move-

ments of the transmitter controls. This adjustment applies to all channels.

Note: if you are using analogue servos, you must set a value of 20 msec. If you are using digital servos

exclusively, 10 msec should be selected.

5.2.3 Failsafe Setup (RX FAIL SAFE)

To switch to the Failsafe setup display, press the ENTER button repeatedly until RX FAIL SAFE appears

on the screen.

Display Description Setup

OUTPUT CH Output channel select 1 – X, depends on the connected

receiver

INPUT CH Input channel select 1 – 16

MODE Fail-safe Mode Fail Safe / Hold / Off

Factory setting Hold

F.S. Pos. Failsafe Position 1000 - 2000 usec

DELAY Failsafe response time 0.25, 0.50, 0.75, 1.00sec

Factory setting 0.75 sec.

FAIL SAFE ALL Stores fail-safe positions for all control

channels NO / SAVE

POSITION Failsafe position 1000 - 2000 usec

Output channel select (OUTPUT CH): this is where you select the desired channel; the remainder of

the fail-safe settings only affect the channel selected at this point.

Input channel select (INPUT CH): channel mapping function

The control functions can be distributed over several receivers in any sequence; alternatively multiple

receiver outputs can be assigned to the same control function. For example, this is useful if your aircraft

RX FAIL SAFE < >

OUTPUT CH: 01

INPUT CH: 01

MODE : FAI SAFE

F.S.Pos. : 1400usec

DELAY : 0.75sec

FAIL SAFE ALL : NO

POSITION : 1500usec

INC + DEC

INC

DEC

ENTER

ESC

INC + DEC

RX FAIL SAFE < >

OUTPUT CH: 01

INPUT CH: 01

MODE : FAI SAFE

F.S.Pos. : 1400usec

DELAY : 0.75sec

FAIL SAFE ALL : NO

POSITION : 1500usec

09 Manual Module M-G2 33302

features two servos acting on each aileron instead of only one.

The SMART-BOX can be used to manage a maximum of sixteen transmitter channels. At this point

you can deﬁne how the transmitter channels (INPUT) are assigned to the channels (OUTPUT) of the

receiver(s).

If your model is ﬁtted with multiple receivers, the Master receiver is the last receiver to be bound.

However, in subsequent operations only the receiver which was bound last is able to make a telemetry

connection to the transmitter. On the other hand, this also means that only the last bound receiver can

be addressed using the Telemetry menu.

Fail-safe mode (MODE): this function is used to select the fail-safe mode for the channel you have se-

lected. You can select either a programmed fail-safe position (Fail Safe), hold-mode for the last position

(HOLD) or OFF.

But CAUTION: if the control signal is absent, analogue servos and many digital servos offer no resis-

tance to the forces acting on the control surfaces, with the result that the model’s control surface posi-

tions are more or less quickly lost.

Please read the corresponding chapter in the RC system instructions on this subject.

F.S.Pos. (Fail-Safe position):

For each OUTPUT CH (receiver servo socket) activate (highlight) the value ﬁeld by brieﬂy pressing the

INC + DEC simutanously, then use the INC or DEC buttons in the “F.S.POS.” line to set the servo posi-

tion which the servo is to take up in “FAIL-SAFE” mode if interference should occur. The setting can be

entered in increments of 10 μs. Default setting: 1500 μs (servo centre).

Important note:

The “F.S.POS.” function is also signiﬁcant if the receiver is switched on, but is (not yet) receiving a valid

signal; this applies to all three modes “OFF”, “HOLD” and “FAILSAFE”: The servo immediately runs to

the Fail-Safe position previously set in the “Position” line. This can be exploited, for example, to prevent

the operation of a retractable undercarriage or similar function if the receiver is switched on accidentally.

However, during normal model operations the corresponding servo behaves in accordance with the set

“MODE” if interference should strike.

Fail-safe response time (DELAY): this point is used to select the delay time after which the servos run

to their selected position if interference affects the radio signal. This value is applied to all channels.

FAIL SAFE ALL (global fail-safe setting): This sub-menu can be used to deﬁne the Fail-Safe position

of the servos simply by “pressing a button”; and is simple to use: Move to the “FAIL-SAFE ALL” line and

press the INC + DEC buttons simultanously to activate the value ﬁeld; “NO” is highlighted (black back-

ground). Now set the parameter to “SAVE” using the INC or DEC button. Use the transmitter controls to

move all the servos which you have assigned - or intend to assign later - in the “MODE - FAIL-SAFE”

line, to the desired fail-safe positions. In the extreme bottom line “Position” displays the current position

of the transmitter control for the channel you have just set.

After touching the INC + DEC buttons once more, the display reverts from “SAVE” to “NO”. This indica-

tes that the position of all the servos affected by the procedure have now been stored, and have also

been adopted in the “F.S.Pos.” line. At the same time the position for the current OUTPUT CH (servo

socket) is immediately displayed on the screen.

Switch the transmitter off, and check the Fail-Safe positions by observing the servo movements.

Fail-safe position (POSITION): displays the Fail-Safe position for the channel set under OUTPUT

CH.

“Fail-Safe” in combination with “channel mapping”

It is clearly desirable that mapped servos - i.e. servos which are controlled by a common control channel

(INPUT CH) - should respond in the same way when interference occurs, so the corresponding settings

of the

INPUT CH determine the behaviour of mapped servos.

Manual Module M-G2 33302 10

11 Manual Module M-G2 33302

RX FREE MIXER < >

MODE : 1

MASTER CH: 08

SLAVE CH : 08

S-TRAVEL- : 100

S-TRAVEL+ : 100

RX WING MIXER

TAIL TYPE : NORMAL

INC + DEC

INC

DEC

ENTER

ESC

RX FREE MIXER < >

MODE : 1

MASTER CH: 08

SLAVE CH : 08

S-TRAVEL- : 100

S-TRAVEL+ : 100

RX WING MIXER

TAIL TYPE : NORMAL

INC + DEC

For example, if receiver servo sockets 6, 7 and 8 are mapped together, i.e. if the same control channel

“04”

is assigned to OUTPUT CH (servo sockets) 06, 07 and 08 then INPUT CH 04 determines the Fail-Safe

behaviour of the three servos connected to control channel 4, regardless of the individual settings of the

OUTPUT CH for INPUT CH 04. This also applies, for example, if it is mapped in turn to INPUT CH 01.

In this case servo socket 04 would respond in accordance with the Fail-Safe settings for CH 01. In con-

trast, the response or delay time set in the “DELAY” line always applies uniformly to all channels which

are set to “FAIL-SAFE”.

CAUTION: if the receiver is switched on and you call up the fail-safe function again using the program-

ming button on the transmitter, any settings previously programmed in the FAIL SAFE display using the

SMART-BOX will be lost, including the channel assignment (INPUT CH).

5.2.4 Mixer Setup (RX FREE MIXER / RX WING MIXER)

To switch to the Mixer setup display, press the ENTER button repeatedly until RX FREE MIXER appears

on the screen.

Display Description Setup

MODE Mode 1, 2, 3

MASTER CH Master channel 0, 1 – 8

SLAVE CH Slave channel 0, 1 – 8

SLAVE TRAVEL- Limit Servo travel, negative 0 – 150%

SLAVE TRAVEL+ Limit Servo travel, positive 0 – 150%

RX WING MIXER

TAIL TYPE Tail type Normal, V-Tail, Elevon

RX FREE MIXER

Mode (MODE): a total of up to three mixers can be used simultaneously, and the MODE function is used

to switch between mixer 1, mixer 2 and mixer 3 for the purpose of adjustment. The remainder of the

settings in this display only affect the mixer selected at this point.

Master channel (MASTER CH): here you set the main channel (primary control function); the slave

channel is mixed into the channel you select at this point.

Sub-channel (SLAVE CH): subsidiary channel coupled to the main channel; the sub-channel is mixed

into the main channel to the extent deﬁned by the value you set.

Sub-channel servo travel (SLAVE TRAVEL +/-): this point is used to adjust the maximum control

surface travel of the servo connected to the sub-channel; the adjustment is carried out separately for

both directions (EPA).

RX WING MIXER

Tail type (TAIL TYPE): at this point you can select pre-set mixer functions for the appropriate model

type

NORMAL: conventional model aircraft - separate rudder and elevator at the tail - no mixer functions

activated

V-TAIL: For this model type the control functions elevator and rudder are linked together in such a way

that each of the two control surfaces - actuated by a separate servos - carries out superimposed eleva-

tor and rudder functions.

ELEVON (delta / ﬂying wing models): The servos connected to outputs 2 and 3 assume superimposed

aileron and elevator functions.

5.2.5 Expo Functios (RX CURVE)

To switch to the Expo functions display, press the ENTER button repeatedly until RX CURVE appears

on the screen.

Display Description Setup

CURVE1 CH Channel number, servo curve 1 1 – 8

CURVE1 TYPE Servo curve 1 Type A, B, C

CURVE2 CH Channel number, servo curve 2 1 – 8

CURVE2 TYPE Servo curve 2 Type A, B, C

CURVE3 CH Channel number, servo curve 3 1 – 8

CURVE3 TYPE Servo curve 3 Type A, B, C

The servo curve function is used to manage the exponential function for up to three servos.

CURVE1 CH: this function is used to select the desired

channel of the ﬁrst servo; the remainder of the settings in

CURVE 1 TYPE only affect the channel selected at this

point

CURVE1 TYPE: at this point you can select the servo curve

for the channel selected under CURVE 1 CH.

A: EXPO- setting, i.e. the servo responds strongly to stick movements around the neutral position, but

its response reverts to a more linear curve with increasing control surface travel

B: linear setting: the servo’s response to stick movements is linear

C: EXPO+ setting, i.e. the servo responds only slightly to stick movements around the neutral position,

but its response reverts to a more linear curve with increasing control surface travel

CURVE2 CH: this function is used to select the desired channel of the second servo; the remainder of

the settings in CURVE 2 TYPE only affect the channel selected at this point

CURVE2 TYPE: at this point you can select the servo curve for the channel selected under CURVE 2

CH.

CURVE3 CH: this function is used to select the desired channel of the second servo; the remainder of

the settings in CURVE 3 TYPE only affect the channel selected at this point

CURVE3 TYPE: at this point you can select the servo curve for the channel selected under CURVE 3

CH.

RX CURVE < >

CURVE 1 CH : 01

TYPE: B

CURVE 2 CH : 02

TYPE: B

CURVE 3 CH : 03

TYPE: B

INC + DEC

INC

DEC

ENTER

ESC

RX CURVE < >

CURVE 1 CH : 01

TYPE: B

CURVE 2 CH : 02

TYPE: B

CURVE 3 CH : 03

TYPE: B

Manual Module M-G2 33302 12

Servoweg

Geberweg

TYP C

Expo = +100%

TYP A

Expo = –100%

TYP C

Expo = +100%

TYP B

linear

13 Manual Module M-G2 33302

5.2.6 Servo test (RX SERVO TEST)

To switch to the Servo test display, press the ENTER button repeatedly until RX SERVO TEST appears

on the screen

Display-Anzeige Erläuterung Einstellungen

ALL MAX Maximum control surface travel position for all servos 1500 – 2000 usec

ALL Min Minimum control surface travel position for all servos 1000 – 1500 usec

TEST Test procedure START / STOP

ALARM VOLT Displays the set voltage at which the low voltage

warning signal is triggered

3.0 – 6.0 V

Factory setting 3.8 V

ALARM TEMP+ Displays the upper limit value at which the warning

signal is triggered

50 – 80° C

Factory setting 70°C

ALARM TEMP- Displays the lower limit value at which the warning

signal is triggered

-20 – +10° C

Factory setting -10°C

CH OUTPUT TYPE Channel sequence ONCE / SAME / SUMI

/ SUMO

Maximum control surface travel position (ALL MAX): this is where you set the maximum control

surface travel for the servo test

Minimum control surface travel position (ALL min): this is where you set the minimum control sur-

face travel for the servo test

Test procedure (TEST): START initiates the servo test process; STOP halts it again. You start and stop

the test by simultaneously pressing the INC / DEC buttons (dark background disappears)

Receiver low voltage warning (ALARM VOLT): monitors the receiver voltage, and can be set to any

value within the range 3.0 to 6.0 Volt. If the voltage falls to the threshold value, an audible signal is

emitted (continuous beeping), and “VOLT.E” ﬂashes at top right in all the Smartbox’s receiver displays;

at the same time the parameter R-VOLT is displayed in inverse form in the receiver data display (RX

DATAVIEW).

Receiver temperature monitor (ALARM TEMP +/-): monitors the receiver temperature. It is pos-

sible to program both a lower limit value ALARM TEMP- (-20 – +10°C) and an upper limit value

ALARM TEMP+ TEMP (50 – 80°C). If the receiver temperature rises above the maximum value or falls

below the minimum, the unit generates an audible warning (continuous beeping). At the same time all

the Smartbox receiver displays show a ﬂashing “TEMP.E” at top right, and the parameter R-TEM is

shown in inverse form in the receiver data display (RX DATAVIEW).

It is important that the temperature of your receiver always stays within the approved range under all

ﬂight

conditions (ideally between 10 and 55°C; please refer to your RC system instructions). If the tempera-

ture rises above maximum or falls below minimum an audible signal is emitted (continuous beeping)

Channel- (CH OUTPUT TYPE): at this point you can select how the receiver signals are sent to the

outputs.

ONCE: the receiver outputs are transmitted in sequence: recommended for analogue servos. This set-

ting ensures that the servos are automatically operated using a 20 msec cycle - 30 msec in the case

of the twelve-channel receiver (Order No. 33512) - regardless of the value set and displayed in the RX

RX SERVO TEST <

ALL-MAX : 2000usec

ALL-MIN : 1000usec

TEST : STOP

ALARM VOLT : 3.8V

ALARM TEMP+ : 70°C

ALARM TEMP- : 10°C

CH OUTPUT TYPE: ONCE INC + DEC

INC + DEC

INC

DEC

ENTER

ESC

RX SERVO TEST <

ALL-MAX : 2000usec

ALL-MIN : 1000usec

TEST : STOP

ALARM VOLT : 3.8V

ALARM TEMP+ : 70°C

ALARM TEMP- : 10°C

CH OUTPUT TYPE: ONCE

SERVO display under the menu point ‘PERIOD’.

SAME: the receiver outputs are transmitted in parallel blocks of four, i.e. channels 1 to 4 and channels

5 to 8 receive the transmitter signal simultaneously in each case: recommended for digital servos. It is

particularly useful where multiple servos are used for a particular function (e.g. ailerons), so that all the

servos move absolutely synchronously.

It is also possible to connect analogue servos; in this case you must set 20 ms in the menu point ‘PE-

RIOD’ in the RX SERVO display.

Note: if you select the SAME setting, it is especially important to install a high-capacity receiver power

supply system, as up to four servos are almost always working simultaneously, placing a greater load

on the battery.

SUMI (Sum signal Input): Input for satellite receiver

SUMO (Sum signal output): the receiver outputs are transmitted in sequence, whereby the highest

channel transmits the sum signal; this signal is required by certain optional devices. With this setting the

servos are automatically operated using a 20 msec cycle - 30 msec in the case of the twelve-channel

receiver (Order No. 33512) - regardless of the value set and shown in the menu point ‘PERIOD’ of the

RX SERVO display.

Ex: V-Stabiliser, teacher-student system, Microbeast, ﬂight simulator and output satellite receiver

SATELLITE MODE

Two HoTT receivers are inter-connected using a three-core connecting lead (Order No. 33700.1 (300

mm) or 33700.2 (100 mm) by the highest-numbered servo sockets. For more details on this please visit

www.graupner.de on the Internet.

The HoTT receiver which is conﬁgured as SUMO (see below) is designated the satellite receiver, and

all its channels are transmitted in the form of a sum signal to the second HoTT receiver - the primary

receiver - if reception should fail; the primary receiver must be programmed as “SUMI”. Note that the

signal only ever moves towards SUMI.

The receiver outputs are addressed in sequence at a frame rate of 20 ms (30 ms with the GR-24 re-

ceiver, Order No. 33512), even if you have set 10 ms in the “PERIOD” line of the “RX SERVO” screen

page. However, if the receiver programmed as the satellite (SUMO) suffers signal reception failure, the

servos connected to that receiver take up the Fail-Safe positions programmed in the satellite receiver,

regardless of the primary receiver.

This receiver conﬁguration is recommended in particular circumstances: for example, if one of the two

receivers has to be installed in an unfavourable position in the model, or if there is a danger that the

received signal will be weak in certain ﬂight attitudes, perhaps due to a turbine, carbon ﬁbre in the

airframe, or a similar problem, with the result that sporadic range problems might be expected.

For this reason it is essential to connect the most important control functions to the primary receiver (the

one programmed as SUMI), so that interference to the satellite receiver (SUMO) does not cause the

model to go out of control. Telemetry data, such as the voltage of the airborne power supply, are only

sent to the transmitter by the satellite receiver (conﬁgured as SUMO), i.e. all telemetry sensors must be

connected to the satellite receiver (SUMO).

Each receiver should be connected to the shared power supply using its own power lead. If high cur-

rents can be expected, duplicated power connections are recommended. However, if each of the two

receivers is to be powered by its own battery, then it is essential to withdraw the central (red) wire from

one of the two satellite lead connectors.

If you wish to carry out further programming, such as the Fail-Safe settings, disconnect the three-core

satellite connection between the two receivers, and switch on just the receiver you wish to address. Note

that you may also need to change the binding sequence.

Manual Module M-G2 33302 14

15 Manual Module M-G2 33302

6. FUNCTIONS

6.1.Binding

When you wish to use the Graupner HoTT 2.4 GHz receiver with a particular transmitter, the ﬁrst step

must always be to “bind” the unit to “its” Graupner HoTT 2.4 GHz RF module (transmitter). However,

the “binding” procedure is only required once for each receiver / RF module combination. Carry out the

following steps when necessary:

• Switch the transmitter and receiver on.

• Without Smart-Box or internal telemetry: Locate the BIND / RANGE button on the back of the mo-

dule, and hold it pressed in while you press and hold the SET button on the receiver. Both LEDs on

the back of the transmitter now glow constantly, and the red LED on the receiver ﬂashes. Under

normal circumstances the ﬂashing red LED on the receiver will cease to ﬂash and switch to a con-

stant green within about ten seconds. This indicates that the binding process is complete. You can

now release both buttons, and your transmitter / receiver combination is ready for use.

With Smart-Box or internal telemetry:• At the Telemetry menu “TX” go to the RX BIND line, then

press the INC + DEC buttons on the SMART-BOX simultaneously (or push rotary): the screen

changes to BINDING, displayed highlighted (black background). Hold the SET button on the recei-

ver pressed. If the ﬂashing red LED on the receiver goes out within about ten seconds, the green

LED glows constantly then the binding procedure has been completed successfully.

• However, if the red LED on the receiver continues to ﬂash for longer than ten seconds, then the

binding process has failed. If this should occur, repeat the whole procedure.

6.1.1. Binding multiple receivers in one model

If required, it is also possible to bind multiple receivers to the transmitter for a particular model. The ﬁrst

step is to bind each receiver individually using the procedure already described.

When the system is in use, the receiver which was switched on ﬁrst, is the Master receiver. Any teleme-

try sensors installed in the model must be connected to this unit, as only the Master receiver transmits

sensor data using the downlink channel. The second and all further receivers operate in parallel with the

Master receiver but in Slave mode, with the downlink channel switched off.

The control functions can also be distributed amongst multiple receivers; this is carried out using the

Channel Mapping function of the SMART-BOX (Order No. 33700). In the same way it is possible to as-

sign one control function to multiple receiver outputs; a typical example would be the use of two servos

for each aileron instead of only one, etc.

6.2.Range checking

The method of checking the effective range of the Graupner HoTT 2.4 GHz system is described below.

We recommend that you ask a friend to help you with this procedure.

After binding the receiver to your transmitter, switch the transmitter and the receiver on, and wait until

the green LED on the receiver lights up.

• Install the bound receiver in the model in its ﬁnal intended position.

• Switch the RC system on, so that you can observe the movement of the servos.

• Set up the model on a ﬂat surface (pavement, closely mown grass or earth), and ensure that the

receiver aerials are located at least ﬁfteen cm above the ground. This may require a support for the

model.

• Hold the transmitter at hip-height, away from your body, but do not point the aerial directly at the

model; instead turn and / or angle the aerial tip so that it stands vertical, and keep it there for the

duration of the range check.

• Start the range check mode in the Telemetry menu; the transmitter starts beeping evenly, and the

red and green LEDs next to the BIND / RANGE button ﬂash alternately.

• Walk away from the model, operating the transmitter sticks constantly. If you detect an interruption

in the link within a range of about ﬁfty metres, stand still and attempt to reproduce it.

• If the model is ﬁtted with a motor, switch it on in order to check whether the power system is gene-

rating interference.

• Continue to walk away from the model until you reach the point where perfect control is no longer

possible.

• Now press the BIND / RANGE button on the transmitter once more; this terminates range-check

Manual Module M-G2 33302 16

mode manually, and the model should respond normally to control commands. If this does not occur

with 100% reliability, the system should not be used. Contact your local Service Department of

Graupner GmbH & Co. KG.

• Range-check mode is usually terminated manually when the user presses the BIND / RANGE but

ton, but it terminates automatically after about ninety seconds in any case. The red LED now glows

constantly again, while the green LED either glows constantly or ﬂashes continuously, according to

the Country setting.

• We recommend that you check effective radio range before every ﬂight. While you are carrying

out the check, simulate all the servo movements which will take place when the model is in ﬂight.

The ground range must always be at least ﬁfty metres in order to ensure safe, reliable model con-

trol.

Note:

Range-check mode is usually terminated manually when the user presses the BIND / RANGE button,

but it terminates automatically after about ninety seconds in any case.

CAUTION:

During normal operations (i. e. when controlling a model) never press and hold the programming

button on the transmitter module!

6.3.Fail-Safe function (RX Failsafe)

In its default state (as delivered) the receiver is set to “Hold” mode, i.e. if a fail-safe situation occurs, all

the servos connected to it maintain the last position detected as valid. In this mode the red LED on the

receiver lights up when interference occurs, and the red LED on the transmitter goes out. The transmit-

ter also starts beeping about once per second as an audible warning.

You can exploit the safety potential of the fail-safe option by at least programming the throttle channel to

respond to a fail-safe situation: the throttle channel of an engine-powered model should be set to idle,

the throttle channel of an electric-powered model to “stop”, and the throttle channel of a model helicop-

ter to “Hold”. You can program the fail-safe function either in the Telemetry menu under “RX Failsafe”

(5.2.3), or on the transmitter module: repeated brief presses of the BIND / RANGE button on the trans-

mitter module cycle through the fail-safe modes (fail-safe on / off, hold-mode, or standard). Locate the

BIND / RANGE button on the back of the module, and hold it pressed in while you switch the transmitter

on. Release the button again once it is switched on.

• Fail-Safe mode: when you press the BIND / RANGE button, the transmitter beeps once; the red

and green LEDs glow constantly.

It is now possible to program positions to which the servos will move in a Fail-Safe situation; this

occurs after a “Hold” period of 0.75 seconds: move the corresponding transmitter controls (sticks,

rotary knobs, INC / DEC buttons etc.) to the desired Fail-Safe positions SIMULTANEOUSLY, then

hold the BIND / RANGE button pressed in for three to four seconds. When you release the button,

both the red and green LEDs should light up constantly, and the transmitter should not emit an au-

dible signal: the transmitter now reverts to Control mode. If this does not occur, repeat the procedu-

re.

• Hold mode (recommended for model helicopters): when you press the BIND / RANGE button,

the transmitter beeps twice; the red LED lights up constantly, and the green LED goes out (factory

default setting).

If interference occurs, all servos programmed to “Hold” remain at the last position detected by the

receiver as correct; this situation is maintained until such time as the receiver picks up a new, valid

control signal.

You can save your selection by holding the BIND / RANGE button pressed in for three to four se-

conds. When you release the button, both the red and green LEDs should light up constantly, and

the transmitter should not emit an audible signal: the transmitter now reverts to Control mode. If this

does not occur, repeat the procedure.

• Fail-Safe OFF: when you press the BIND / RANGE button, the transmitter beeps three times; the

green LED glows constantly, the red LED goes out.

You can save your selection by holding the BIND / RANGE button pressed in for three to four se-

conds. When you release the button, both the red and green LEDs should light up constantly, and

the transmitter should not emit an audible signal: the transmitter now reverts to Control mode. If this

does not occur, repeat the procedure.

17 Manual Module M-G2 33302

• Standard mode (suitable for ﬁxed-wing model aircraft only): when you press the BIND / RAN-

GE button, the transmitter beeps four times; both LEDs are off.

In this mode the throttle servo (channel 1) moves to the Fail-Safe position, i.e. the position you have

programmed for a Fail-Safe situation, while all the other channels remain at “Hold”.

Move the throttle stick to the desired position, then hold the BIND / RANGE button pressed in for

three to four seconds. When you release the button, both the red and green LEDs should light up

constantly, and the transmitter should not emit an audible signal: the transmitter now reverts to

Control mode. If this does not occur, repeat the procedure.

6.4.Country Ländereinstellung (COUNTRY)

The Country setting is present in order to cater for various directives (FCC, ETSI, IC etc.). The HoTT

2.4 radio system features a restricted frequency band for France. If you wish to use the RC system in

France, the country setting on the transmitter must be set to “France” mode, as described. It is essenti-

al not to use the Universal/EUROPE mode. If you select the “France” setting on your transmitter, you

MUST select it again every time you alter the Fail-Safe settings using the programming button.

You can either program the Country setting in the Telemetry menu “TX COUNTRY” (5.1.) or on the

transmitter module: To select a Country setting, you must ﬁrst switch the transmitter off, then insert the

(FRANCE / GENERAL) programming plug (supplied) in the DATA socket on the back of the transmitter.

Switch the transmitter on: you can now toggle between the “GENERAL” and “France” settings by brieﬂy

pressing the BIND / RANGE button, always starting with the current setting.

• GENERAL/EUROPE: the transmitter beeps once when you press the BIND / RANGE button, and

the green LED lights up constantly.

Default setting: approved for use in all countries with the exception of France.

• France: the transmitter beeps twice when you press the BIND / RANGE button, and the green

LED ﬂashes continuously.

• Once you have selected the Country setting, save it in the transmitter by holding the BIND / RANGE

button pressed in for about three seconds. When you release the button, the transmitter emits a brief

conﬁrmation tune, and the beeps cease.

• Switch the transmitter off, and remove the programming plug. Do not under any circumstances use

the radio control system with the programming plug inserted!

• If you subsequently wish to check the current Country setting for the transmitter, observe the green

LED on the back of the transmitter when it is switched on:

green LED glowing constantly = “GENERAL”

green LED ﬂashing constantly = “France”

6.5. Low voltage warning

If the transmitter voltage falls below 8.0 V (the voltage can be programmed in the Telemetry display

“TX” or with the Smart-Box), the RF module generates an audible low voltage warning in the form of a

steady series of beeps at intervals of around one second. This occurs independently of the transmitter

software.

6.6. Range warning

If the receiver signal in the down-link channel becomes too weak, the transmitter always generates an

audible range warning in the form of a beep emitted about once per second. Since the transmitter’s

output is much higher than that of the receiver, you will still maintain full control of the model, but in the

interests of safety you should ﬂy the model back towards you until the warning signal ceases again.

If the audible range warning signal does not cease when you reduce the distance, then the transmitter

or receiver low voltage or temperature warning is active! In this case you must land the model and cease

operations without delay.

6.7.DATA socket - Firmware update or SMART-BOX connection

The SMART-BOX is connected to the DATA socket on the back of the transmitter.

Firmware updates for the transmitter RF module can be transferred via the DATA or 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, and the adapter lead, Order No. 7168.6A, which are available separately.

The programs and ﬁles required for this are available from www.graupner.de in the Download area for

Manual Module M-G2 33302 18

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