33112.mx-12 HoTT.2.gb H O P P I N G . T E L E M E T R Y . T R A N S M I S S I O N mx-12 H O P P I N G . T E L E M E T R Y . T R A N S M I S S I O N GRAUPNER GMBH & CO. KG POSTFACH 1242 D-73220 KIRCHHEIM/TECK GERMANY Modifications and availability reserved. Graupner products are only available through model shops. We will gladly inform you of your nearest stockist. We accept no liability for printing errors. http://www.graupner.de Printed in Germany PN.PG-02 33112_Um_mx12_HoTT_2_GB.
Contents Guarantee certificate General Information Safety Notes .................................................................. 3 Safety notes and handling instructions relating to Nickel-Metal-Hydride rechargeable batteries ............ 8 Foreword...................................................................... 10 Description of radio control set .................................... 11 Recommended battery chargers ................................. 13 Transmitter power supply ......................
Safety Notes Please read carefully! We all want you to have many hours of pleasure in our mutual hobby of modelling, and safety is an important aspect of this. It is absolutely essential that you read right through these instructions and take careful note of all our safety recommendations. We also strongly recommend that you register without delay at http:// www.graupner.
Safety Notes any other installed equipment in the model, but in an easily accessible position. Under no circumstances allow servo leads to run close to the aerial, far less coiled round it! Ensure that cables are fastened securely, so that they cannot move close to the receiver aerial when the model is flying. Deploying the receiver aerial(s) The receiver and its aerials should be installed as far away as possible from all kinds of power system.
Checking the transmitter and receiver batteries It is essential to stop using the radio control system and recharge the batteries well before they are completely discharged. In the case of the transmitter this means – at the very latest – when the message “battery needs charging” appears on the screen, and you hear an audible warning signal. It is vital to check the state of the batteries at regular intervals – especially the receiver pack.
Safety Notes • • • • applicable to mobile transmitting apparatus, the equipment’s aerial must be at least 20 cm from any person when the system is in use. We therefore do not recommend using the equipment at a closer range than 20 cm. Ensure that no other transmitter is closer than 20 cm from your equipment, in order to avoid adverse effects on the system’s electrical characteristics and radiation pattern.
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Safety notes and handling instructions relating to Nickel-Metal-Hydride rechargeable batteries As with all sophisticated technical products, it is vitally important that you observe the following safety notes and handling instructions if you wish the equipment to operate safely and reliably for an extended period. Safety notes • Rechargeable batteries are not playthings, and must be kept well away from children. Store rechargeable batteries out of the reach of children.
which allows you to set the charge current accurately, then the battery should always be recharged using the “normal” charge rate of 1/10C; see the example stated above. Wherever possible, transmitter batteries should always be recharged at the 1/10C rate, in order to avoid differences in cell states. The charge current must never exceed the maximum permissible value stated in the transmitter instructions.
mx-12 the latest generation of radio control technology HoTT (Hopping Telemetry Transmission) is the synthesis of expertise, engineering and world-wide testing by professional pilots. The equipment operates on the 2.4 GHz band, and offers bi-directional communication between transmitter and receiver via a down-link channel integrated into the receiver. The mx-12 HoTT RC system is based on the Graupner/JR mc-24 computer radio control system which was introduced back in 1997.
mx-12 Computer System Six-channel radio control set with Graupner HoTT 2.4 GHz technology (Hopping Telemetry Transmission) Graupner HoTT technology offers excellent reliability in use, with bi-directional communication between transmitter and receiver, integrated telemetry and ultra-fast response times. Simplified programming technology with four-way push-buttons. High-contrast eight-line graphic screen with blue backlighting for ultra-clear display of all set-up parameters and telemetry data.
mx-12 Computer System Six-channel radio control set with Graupner HoTT 2.
The set Order No. 33112 contains: mx-12 HoTT micro-computer transmitter with integral 4NH-2000 RX RTU flat-pack Ni-MH transmitter battery (specification reserved), Graupner GR-12 HoTT bi-directional receiver, switch harness and plug-type battery charger Order No. Description 220 V mains conn. 12 V DC connect. NiCd Ni-MH LiPo Lead-ac. Integral charge.
Operating Notes Transmitter power supply The mx-12 HoTT transmitter is fitted as standard with a high-capacity rechargeable 4NH-2000 RX RTU Ni-MH battery (Order No. 2498.4FBEC) (specification reserved). When delivered, the standard rechargeable battery is not charged. When you are using the transmitter you can monitor the battery voltage on the LCD screen. If the voltage of the transmitter battery falls below a certain point, you will hear an audible warning signal.
Battery timer, bottom left corner of the screen This timer displays the cumulative operating time of the transmitter since the last time the transmitter battery was charged. This timer is automatically reset to “0:00” when the transmitter detects that the voltage of the transmitter battery is significantly higher than the last time it was switched on, e. g. as a result of a charge process. GRAUBELE #01 6.1V 99% 0:00h 0:00 stop flt 0:00 «normal » K78 HoTT 0.0V Mx Operating Notes 33112_mx12_HoTT_2_GB.
Operating Notes Receiver power supply A wide range of rechargeable four-cell and five-cell NiMH batteries varying in capacity is available for use as the receiver power supply. If you are using digital servos we recommend that you use a five-cell (6 V) pack of generous capacity. If your model is fitted with a mixture of digital and analogue servos, it is important to check the maximum permissible operating voltage of all the types. The PRX unit, Order No.
Adjusting stick length Both sticks are infinitely variable in length over a broad range, enabling you to set them to suit your personal preference. Hold the bottom half of the knurled grip firmly, and unscrew the top section: Now screw the stick top in or out (shorter or longer) to the length you prefer before tightening the top and bottom sections against each other to fix the stick top. Opening the transmitter case Please read the following notes carefully before you open the transmitter.
Operating Notes Converting the dual-axis stick units Self-centring action Either or both sticks can be converted from self-neutralising to non self-neutralising action: start by opening the transmitter as described on the previous page. If you wish to change the standard stick unit arrangement, start by locating the screw on the left-hand stick unit shown circled in white in the photo below.
Brake spring and ratchet You can alter the braking force of the stick by adjusting the outer of the two screws circled in white in the next picture; adjusting the inner screw alters the strength of the ratchet: Stick centring force The centring force of the sticks is also variable to suit your preference. The adjustment system is located adjacent to the centring springs; see the white circles in the following photo.
Description of transmitter Transmitter controls Attaching the transmitter neckstrap You will find a strap lug mounted in the centre of the front face of the mx-12 HoTT transmitter, as shown in the drawing on the right. This lug is positioned in such a way that the transmitter is perfectly balanced even when suspended from a neckstrap. Order No. 1121 Neckstrap, 20 mm wide Order No.
Case screw Case screw Option well for speech output module Order No. 33001.71 Data socket for connecting Smart-Box, Order No. 33700 DSC socket for connecting flight simulators and for Teacher mode Three-pin socket for connecting transmitter to a PC Case screw Case screw Transmitter battery charge socket Battery compartment cover Case screw Case screw Optional headphone socket If you install the optional speech output module, Order No. 33001.
DSC Data storage Direct Servo Control Card slot The original function of this socket was for “Direct Servo Control”, and that’s why the abbreviation is still in use. However, for technical reasons “direct servo control” is no longer possible with the HoTT system using a diagnosis lead. The mx-12 HoTT transmitter’s standard two-pole DSC socket is now used as a Trainer (buddy box) socket (Teacher or Pupil), and as an interface for flight simulators.
GRAUBELE #01 5.2V 50% 3:33h 0:00 stop flt 0:00 «normal » K78 HoTT 5.5V M Note: If there is an SD card installed, withdraw it BEFORE you remove the transmitter’s back panel, otherwise there is a risk that you will damage the card.
Screen and keypad Visual display of the trim lever positions; alternatively - if rotary controls CTRL 7 or 8 are operated - display of the current settings of these two controls Model name Model type display (fixed-wing / helicopter) See page 28 for possible warnings Stopwatch in min:sec (count-up / count-down) Model memory 1 … 10 Left-hand four-way button ef cd leaf through ef pressed briefly together: switches to Servo display menu Right-hand four-way button ef cd leaf through / alter values SET Sele
Operating the “Data Terminal” Input buttons ESC, SET, CLEAR, symbols On-screen telemetry symbols The active model memory is not yet “bound” Not flashing: RF switched off at transmitter Flashing aerial symbol: The last receiver bound to the active model is inactive, or out of range >M x No telemetry signal detected Signal strength display >M Display of Pupil signal strength on the Teacher >P transmitter’s screen.
HIDDEN MODE Language selection and screen contrast The “HIDDEN MODE” (VERSTECKTER MODUS) menu of the mx-12 HoTT transmitter can be accessed from virtually any menu position by holding the arrow buttons cd of the left-hand four-way button and the SET button of the right-hand four-way button pressed in; after about one second this display appears: ¿VERSTECKTER MODUS¿ 0 KONTRAST DEUTSCH SPRACHE ANSAGEN DEUTSCH CONTRAST In the “CONTRAST” (KONTRAST) line you can adjust the screen contrast to suit your preferenc
RF ON/OFF? ON OFF Changing the language Use the arrow buttons of the left or right-hand four-way button to move to the “VOICE” line: ¿ HIDDEN MODE ¿ 0 CONTRAST ENGLISH LANGUAGE VOICE DEUTSCH Confirm your choice by pressing the central SET button of the right-hand four-way button once more: the selected voice package is now loaded into the transmitter’s memory: ¿ HIDDEN MODE ¿ 0 CONTRAST ENGLISH LANGUAGE VOICE ENGLISH 22/100% I The loading process is finished when the progress bar at the bottom edge of the
Warnings On-screen function fields Warnings SEL, STO, SYM, ASY, , The bottom line of the screen displays function fields which vary according to the menu selected. BIND N/A OK RF ON/OFF? ON OFF batter y needs charging fail safe setup t.b.d MISSING IMPORT DATA OK 28 “Binding not present” No receiver is bound to the currently active model memory. You can move directly to the appropriate option by briefly pressing the SET button.
Position display Input lock Rotary proportional controls CTRL 7 and 8 As soon as you operate one of the two rotary controls CTRL 7 + 8 on the centre console, a small symbol appears to the right of the two vertical position indicators: At the same time the position display of the two central vertical bars switches for the duration of the actuation from the display of the current trim position to the current position of the rotary controls CTRL 7 + 8.
Using the transmitter for the first time Preliminary notes regarding the mx-12 HoTT transmitter For more information please visit our Internet site at www.graupner.de Preliminary notes Within this period you can switch off the RF signal if required by moving the black field to the right using the c In theory the Graupner HoTT system permits the simulor f arrows of the right-hand four-way button; when you taneous operation of more than 200 models.
they become available. Important notes: • The transmitter included in the set is prepared at the factory with the correct settings for most European countries (except France). If you wish to operate the RC system in France, you MUST first set the Country setting on the transmitter to “FRANCE” mode; see page 115.
Using the receiver for the first time Preliminary notes regarding the GR-12 receiver For more information please visit the Internet at www.graupner.de. Receiving system Temperature warning If the temperature of the receiver falls below a limit value The mx-12 HoTT radio control set includes a GR-12 set on the receiver (the default is -10°C), or exceeds 2.4 GHz bi-directional receiver which is suitable for conthe upper warning threshold, which is also set on the nection to a maximum of six servos.
RX CURVE CURVE1 CH : 02 TYPE : A CURVE2 CH : 05 TYPE : A CURVE3 CH : 04 TYPE : B 5CH FUNCTION:SERVO On this menu page locate the “>” symbol at the left-hand edge of the screen, use the d arrow button of the left or right-hand four-way button to move it to the bottom line, and then press the central SET button of the right-hand four-way button: RX CURVE CURVE1 CH : 02 TYPE : A CURVE2 CH : 05 TYPE : A CURVE3 CH : 04 TYPE : B 5CH FUNCTION:SERVO Now select the alternative “SENSOR” setting using one of the two
Installation Notes Installing the receiver Regardless of which Graupner receiving system you are using, the procedure is always the same: Please note that the receiver aerials must be arranged at least 5 cm away from all large metal parts and leads which are not attached or connected directly to the receiver. This includes steel and carbon fibre components, servos, fuel pumps, cables of all sorts, etc.
Receiving system power supply A reliable power supply is one of the basic essentials for reliable model control. Free-moving pushrods, a fullycharged battery, battery connecting leads of adequate cross-section, minimal transfer resistance at the connectors etc.
generally do not survive such a high number of charge / discharge cycles as is claimed for other batteries, such as Nanophosphate® types. The comparatively high nominal voltage of 7.4 Volt of a two-cell LiPo pack presents no problems to Graupner HoTT receivers, nor to those servos, speed controllers, gyros, etc. which are expressly approved for use at these higher voltages. Please note, however, that virtually all servos, speed controllers, gyros etc.
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Definition of terms Control functions, transmitter controls, function inputs, control channels, mixers, switches, control switches To make it easier for you to understand the mx-12 HoTT manual, the following section contains definitions of many terms which crop up again and again in the remainder of the text.
Assigning switches and control switches The basic procedure At many points in the program there is the option of using a switch (SW 1, 3 … 7) or a control switch (G1 … 3; see below) to operate a function, or to switch between settings, such as the DUAL RATE / EXPO function, flight phase programming, mixers and more. The mx-12 HoTT allows you to assign several functions to a single switch.
Digital trims Description of function, and Ch 1 cut-off trim 40 1. Fixed-wing models The Ch 1 trim features a special cut-off trim which is designed for glowplug motors: you initially use the trim lever in the usual way to select a reliable idle setting for the motor. If you now move the Ch 1 trim lever to its end-point in the direction of “motor cut-off”, pushing the lever in a single movement, a marker appears on the screen in the last position.
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Fixed-wing model aircraft This program provides convenient support for normal model aircraft with up to two aileron servos and two flap servos, V-tail models, flying wings and deltas with two elevon (aileron / elevator) servos and two flap servos. The majority of power models and gliders belong to the “normal” tail type with one servo each for elevator, rudder, ailerons and throttle or electronic speed controller (airbrakes on a glider).
Installation notes The servos MUST be connected to the receiver outputs in the following order: Outputs not required are simply left vacant. Please note the following points in particular: • If you are using only one aileron servo, receiver output 5 (right aileron) is left unused; it can also be used for another purpose if you select “1 AIL” in the “Basic settings” menu.
As there are several possible combinations of servo orientation and control surface linkage, you may find that the direction of rotation of one or more servos is incorrect. Use the following table to solve the problem. Model type V-tail Delta, flying wing Servo rotating in wrong direction Remedy Rudder and elevator reversed Reverse servos 3 + 4 in the “servo set.
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Model helicopters The continued development of model helicopters and helicopter components, such as gyros, speed governors, rotor blades etc., has led to the current position where helicopters are capable of sophisticated 3-D aerobatics. In contrast, if you are a beginner to helicopter flying, you need a simple set-up so that you can quickly get started on the initial stages of hovering practice, and then gradually learn to exploit all the options provided by the mx-12 HoTT.
Note for modellers upgrading from earlier Graupner systems: Compared with the previous receiver channel sequence, servo socket 1 (collective pitch servo) and servo socket 6 (throttle servo) have been interchanged. The servos must be connected to the receiver output sockets in the order shown at bottom right. Outputs not required are simply left vacant. For more information on the different types of swashplate, please refer to the “Basic settings” menu described on page 64 / 65.
Detailed description of programming Reserving a new memory If you have already read through the manual to this point, you will undoubtedly have made your first attempt at programming the system already. Even so, it is important to describe each menu here in detail, to ensure that you have comprehensive instructions for each application you are likely to encounter. In this section we start with setting up a “free” model memory prior to “programming” a new model: GRAUBELE #01 6.
press the central SET button of the right-hand four-way button briefly in confirmation. This initialises the chosen model type for the model memory you have just selected, and you can now start programming your model in this memory. It is now only possible to change this memory to a different model type if you first erase the model memory (“Model memory” menu, page 52).
sticks, whereas servos connected to sockets 5 and 6 remain steadfastly at their centre position. If you set up a new model helicopter, servo 6 may also respond to some extent to the controls - depending on the position of the throttle limiter CTRL 7. For both model types this situation only changes once you have carried out the appropriate assignments in the “Transmitter control settings” menu.
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Model memories Calling up a model, erasing a model, copying model ¼ model The section on pages 24 and 25 explains the basic method of using the buttons, while the previous two double-pages explains how to move to the Multi-function list and reserve a new model memory. At this point we wish to start with the “normal” description of the individual menu points in the sequence in which they occur on the transmitter itself.
Caution: The erasure process is irrevocable. All data in the selected model memory is reset to the factory default settings. Note: If you wish to erase the currently active model memory in the basic display, you will be required to define the model type “Helicopter” or “Fixed-wing” immediately. However, if you erase a non-active model memory, then the message “ÄÄfreeÄÄ” appears in the Model select menu.
copied to the SD card. Notes: • If the warning … SD-CARD INSERT OK • • • • • 54 … appears instead of a model selection, there is no SD card in the card slot; see page 22. When you copy a model memory, the binding data is copied along with the model data, so that the receiving system associated with the original model memory can also be operated using the SAME transmitter and the copied memory without repeating the binding procedure. An exported fixed-wing model is stored on the memory card under \\Mo
is copied along with the model data, so that the receiving system associated with the original model memory can also be operated using the SAME transmitter and the copied memory without repeating the binding procedure. Program description: model memories 33112_mx12_HoTT_2_GB.indd Abs23:55 55 06.06.
Base settings Basic model-specific settings for fixed-wing model aircraft Before you start programming specific parameters, some basic settings must be entered which apply only to the currently active model memory. Select the “Basic settings” (basic model settings) menu using the arrow buttons of the left or right-hand four-way button, then press the central SET button of the right-hand four-way button: base sett. contr set.
four possible options: “idle fr.”: The idle position of the throttle / airbrake stick (C1) is forward, i. e. away from the pilot. The throttle warning message “Throttle too high”, see page 28, and the – following – option “cut off” are activated. In the “Wing mixer” menu the “Brake ¼ NN *” mixers are disabled. “idle re.”: The idle position of the throttle / airbrake stick (C1) is back, i. e. towards the pilot.
GRAUBELE mod name stick mode 1 idle re. motor at C1 cut off –125% +100% 1 tail type normal STO tail type GRAUBELE mod name stick mode 1 idle re. motor on C1 cut off –125% +100% 1 tail type normal „Delt/FlW“: „2elev sv“: The mixed elevon (aileron and elevator) control system requires two or four separate servos, one or two in each wing. However, the elevator trim only affects servos 2 + 3, even if you select “2ail2fl” see below.
timer Two timers are shown in the basic display: one stopwatch and one flight timer: GRAUBELE #01 6.1V 99% 0:00h stop flt 0:00 0:00 K78 HoTT 0.0V M You can assign a physical switch or a control switch to these two timers in the right-hand column of the “timer” line, indicated by the switch symbol at the bottom edge of the screen. idle re. motor at C1 cut off –125% +100% 1 tail type normal aile/flap 2aile timer 0:00 ––– The assigned switch starts both timers, and also halts the stopwatch.
The “alarm timer” is reset by simultaneously pressing the cd or ef buttons of the right-hand four-way button (CLEAR), once you have halted the timer. Note: A count-down timer is indicated in the basic display by a flashing colon (:) between the minutes field and the seconds field. Phase 2 and Phase 3 You will automatically be in the “normal” flight phase 1 unless you have already assigned a switch to phases 2 or 3.
hand arrow buttons, and confirm your choice with SET … or alternatively press the cd or ef buttons of the right-hand four-way button (CLEAR) simultaneously to revert to the default sequence. Please note that any subsequent changes to servo settings, such as servo travel, Dual Rate / Expo, mixers etc., must be carried out according to the original (default) receiver socket sequence.
range test The integral range-check reduces the transmitter’s output power in such a way that you can test the system’s operation at a distance of up to about fifty metres. Carry out the range-check of the Graupner HoTT system in accordance with the following instructions. We recommend that you ask a friend to help with rangechecking. 1. Install the receiver in the model as required, preferably after completing the binding process with the transmitter. 2.
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Base settings Basic model-specific settings for model helicopters roll throttle throttle tail rotor pitch axis pitch axis roll STAR throttle tail rotor Motor/Pitch Use the arrow buttons cd of the left or right-hand fourway button to select the “Stick mode” line; the select field is now framed: STARLET mod name stick mode 1 1 ser vo swashplate cut off –100% +150% ––– right rotor direct Briefly press the SET button: the current stick mode appears highlighted.
is framed. Press the SET button: the current number of collective pitch servos is highlighted on the screen. You can now determine the required variant using the arrow buttons of the right-hand four-way button: “1 servo”: The swashplate is tilted by one roll servo and one pitch-axis servo. Collective pitch is controlled by one separate servo. The “Swashplate mixer” menu point is suppressed in the multi-function menu if you select “1 servo” as the swashplate type.
Cut off As part of the auto-rotation set-up procedure of the mx-12 HoTT transmitter’s Helicopter program there is the option to define a “motor OFF” position for the throttle servo or speed controller for use in an emergency. However, if you set an idle position in the “Throttle” line instead of an emergency OFF position - for example, in order to avoid having to re-start the engine after every practice auto-rotation landing - then this option is not available.
Press the central SET button of the right-hand four-way button, and the direction of operation of the throttle / collective pitch stick is highlighted. Now you can select the required variant using the arrow buttons of the righthand four-way button: Pitch Timers Two timers are shown in the basic display: one stopwatch and one flight timer. STARLET #02 6.1V 99% 0:00h right-hand rotation 0:00 0:00 K78 HoTT 0.
the right-hand four-way button (CLEAR). Switching between “count-up” and “count-down” Count-up timer (stopwatch function) If you assign a switch and start the stopwatch with the initial value of “0:00”, the timer runs up until the maximum of 180 minutes and 59 seconds, then re-starts at 0:00. Count-down timer (timer function) In the left-hand minutes field you can select a starting time within the range 0 to 180 minutes; in the right-hand seconds field the range is 0 to 59 seconds.
• With this in mind, you may wish to alter the default flight phase name “Hover” for flight phase 2 to take the inherent priorities into account; see below. • At the servo end the transition does not occur “abruptly”, but with a fixed transition period of about one second. Programming When you select “Phase 2” using the arrow buttons cd of the left or right-hand four-way button, the “Name” field for that flight phase is already framed.
S S S S S S 6 2 3 4 5 1 output output output output output output 1 2 3 4 5 6 Note: It is also possible to distribute the control functions amongst as many receivers as you wish, using the channel-mapping function in the mx-12 HoTT’s integral Telemetry menu, or even to assign the same control function to multiple receiver outputs. However, we strongly recommend that you use only one of the two options, as a combination will soon lead to confusion.
Range test The integral range-check reduces the transmitter’s output power in such a way that you can test the system’s operation at a distance of up to about fifty metres. Carry out the range-check of the Graupner HoTT system in accordance with the following instructions. We recommend that you ask a friend to help with range-checking. 1. Install the receiver in the model as required, preferably after completing the binding process with the transmitter. 2.
Servo settings Servo direction, centre, travel S1 S2 S3 S4 S5 rev 0% 0% 0% 0% 0% cent 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% trav + In this menu you can adjust parameters which only affect the servo connected to a particular receiver output, namely the direction of servo rotation, neutral point and servo travel. Always start with the servo setting in the left-hand column.v Basic procedure: 1.
Column 4 “- Servo travel +” In this column you can adjust servo travel symmetrically or asymmetrically (different each side of neutral). The adjustment range is 0 … 150% of normal servo travel. The reference point for the set values is the setting in the “Centre” column. To set symmetrical travel, i. e.
Transmitter control settings Basic procedures for assigning transmitter controls and switches I5 free I6 free +100% +100% +100% +100% tr v + In addition to the two dual-axis stick units for the control functions 1 to 4, the mx-12 HoTT is fitted as standard with a range of supplementary controls: • Two rotary proportional controls: CTRL 7 and 8. These are included in the menu as “ctrl 7” and “ctrl 8”. • Two three-position switches: SW 4/5 or CTRL 9 and SW 6/7 or CTRL 10.
will find in the “Transmitter control settings” menu as “Control 9” and “Control 10”, provide a centre position in addition to the two end-points. Simultaneously pressing the cd or ef buttons of the right-hand four-way button (CLEAR) with the switch assignment activated - see illustration above - resets the input to “free”.
Transmitter control settings Basic procedures for assigning transmitter controls and switches +100% +100% gyr free +100% +100% thr free lim ctrl 7 +100% +100% tr v + In addition to the two dual-axis stick units for the control functions 1 to 4, the mx-12 HoTT is fitted as standard with a range of supplementary controls: • Two rotary proportional controls: CTRL 7 and 8. These are included in the menu as “ctrl 7” and “ctrl 8”. • Two three-position switches: SW 4/5 or CTRL 9 and SW 6/7 or CTRL 10.
need to be operated for slightly longer. If the travel is not sufficient for the transmitter to detect it, move the control in the opposite direction. If you assign one of the two-position switches, then this control channel works like an On / Off switch. It is then possible to switch to and fro between two end-point values using this simple switch, e. g. motor ON / OFF.
Important: In contrast to servo travel adjustments, changing the transmitter travel setting affects all mixer and coupling inputs derived from it, i. e. in the final analysis all the servos which can be operated using the associated transmitter control.
Throttle limit function “Lim” input By default the “lim” input is assigned to the rotary proportional control CTRL 7, which is located at top left on the transmitter: gyr ctrl 8 +100% +100% thr free +100% +100% lim ctrl 7 +100% +100% tr v + This pre-defined assignment eliminates the need to program two flight phases - “with idle-up” and “without idle-up” - as are often used by other radio control systems for this purpose, since the method of raising the system rotational speed below the hover point is mo
ch1 thr input output point 3 0% 0% 0% To complete this basic set-up you still have to adjust the idle trim range to coincide with point “1” of the throttle curve. This is accomplished by setting point “1” of the “Ch 1 ¼ throttle” mixer in the “Heli mixer” menu to a value of about -65 to -70%: ch1 Note: Since the throttle trim lever has no effect when the throttle limiter is open, its position is not relevant at this point.
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D/R Expo Switchable control characteristics for aileron, elevator and rudder Use the arrow buttons of the left or right-hand four-way button to leaf through to the “D/R Expo” menu point of the multi-function menu: mod. mem. ser vo set. D/R expo wing mixer ser vo disp fail-safe base sett. contr set.
Caution: For safety reasons the Dual Rate value should always be at least 20% of total control travel. Examples of different Dual Rate values: normal DUAL EXPO 3 3 ––– Simultaneously pressing the cd or ef buttons of the right-hand four-way button (CLEAR) resets an altered value in the highlighted input field to 0%.
D/R Expo Switchable control characteristics for roll, pitch-axis and tail rotor roll nick tail 100% 100% 100% DUAL 0% 0% 0% ––– ––– ––– EXPO The Dual Rate / Expo function provides a means of switching to reduced control travels, and influencing the travel characteristics, for the roll, pitch-axis and tail rotor servos (control functions 2 … 4).
Examples of different Dual Rate values: Servo travel Servo travel Servo travel Dual Rate = 20% Dual Rate = 50% Dual Rate = 100% +11% +22% 0% normal DUAL EXPO 3 3 ––– Stick deflection Simultaneously pressing the cd or ef buttons of the right-hand four-way button (CLEAR) resets an altered value in the highlighted input field to 0%.
Phase trim Flight phase-specific trims for flaps, ailerons and elevator If you have not assigned a switch to phases 2 or 3 in the “Basic settings” menu, i. e. you have not assigned switches to these alternative phases, you automatically remain in flight phase 1 - “normal”. The number and name (“normal”) of this flight phase are permanently assigned, and cannot be altered. For this reason the “normal” phase is not stated as Phase 1 “normal” in the “Basic settings” menu; it is simply concealed.
Select the desired control surface function using the arrow buttons ef of the left or right-hand four-way button, then press the central SET button of the right-hand four-way button. The trim values in the highlighted value field can now be adjusted using the arrow-buttons of the right-hand four-way button. You can activate each phase by operating the assigned phase select switch or switches.
What is a mixer? Fixed-wing mixers The basic function In many models it is often desirable to use a mixer to couple various control systems, e. g. to link the ailerons and rudder, or to inter-connect a pair of servos where two control surfaces are actuated by separate servos.
Notes: • There are various alternative methods of positioning the camber-changing flaps; these include: a) settling on just one position per flight phase, simply by setting appropriate trim values in the “Phase trim” menu, as described on the preceding double-page; b) controlling the flaps manually using any transmitter control assigned to “Input 6” (in the “Transmitter control settings” menu - see page 74), after setting the basic flap positions in the “Phase trim” menu, as described earlier.
reliable centring. Mechanical solutions are also possible, but they usually have to be “designed in” when the model is built, and the degree of differential cannot be altered subsequently. In any case significant mechanical differential tends to cause additional slop in the control system.
ail ¼ flaps (Aileron ¼ flap) brak ¼ elev (Airbrake ¼ elevator) brak ¼ flap (Airbrake ¼ flap) or This mixer feeds a variable amount of the aileron signal into the flap channel. When an aileron command is given, the flaps “follow” the ailerons, although usually through a smaller angle, i. e. the mixer ratio is generally less than 100%. The adjustment range of -150% to +150% allows the user to set up the flap direction to match that of the ailerons.
brak ¼ aile (Airbrake ¼ aileron) When you operate the brake function, both aileron servos move together for the landing approach; the mixer ratio can be set to any value in the range -150% to +150%. Simultaneously pressing the cd or ef buttons of the right-hand four-way button (CLEAR) resets an altered value to 0%. Note: It can also be useful to deflect both ailerons up slightly when the airbrakes are extended; in most cases this significantly reduces the risk of a tip-stall.
“usual” settings are again in the low two-digit range. flap ¼ elev flap ¼ aile (Flap ¼ aileron) (Flap ¼ elevator) When the camber-changing flaps are lowered, either using “Phase trim” or by means of a transmitter control assigned to input “6”, a pitch trim change (up or down) may occur. Alternatively it may be desirable for slight down-elevator to be applied automatically when the flaps are raised by a small amount, in order to increase the model’s basic airspeed.
Helicopter mixers Flight phase-specific mixers for collective pitch, throttle and tail rotor In the “Basic settings” menu a method of switching flight phases can be activated by assigning the appropriate switches to “Phase 2” and / or “Auto-rotation”. You can then switch between the phases “normal” and a second phase - to which you can assign a more appropriate name yourself, if necessary - using one of the non-centring switches SW 3 … 7; a further switch then selects “Auto-rotation”.
the right-hand four-way button (CLEAR) resets an altered value to the default value. 5. Press the central SET button of the right-hand fourway button to conclude the input process.
ch1 ¼ thro (CLEAR). Points “1” and “5”, however, CANNOT be disabled. ch1 Note: The following illustration, and all the other pictures on this page, show a control curve which we prepared for illustration purposes only.
Typical throttle curves for different flight phases: +100% Output Output +100% Output +100% -100% -100% -100% 1 2 3 4 5 Control travel Hover 1 2 3 4 Control travel Aerobatics 5 1 2 3 4 5 Control travel 3D Notes on using the “Throttle limit” function: • We strongly recommend that you make use of the throttle limit function (“Transmitter control settings” menu, page 79).
Ch1 ¼ tail rotor Ch1 (static torque compensation) tail input output point 3 normal input output point 3 normal 0% 0% 0% The default setting is a torque compensation curve with a uniform linear mixer input of 0%, as is required for a gyro sensor operating in “heading lock mode”; see illustration above.
Adjusting the gyro sensor If you wish to set up a gyro to achieve maximum possible stabilisation of the helicopter around the vertical axis, please note the following points: • The mechanical control system should be as freemoving and accurate (slop-free) as possible. • There should be no “spring” or “give” in the tail rotor linkage. • You must use a powerful and - above all - fast servo for the tail rotor.
Adjusting the throttle and collective pitch curves A practical procedure Note: The hover point should always be set to the centre position of the throttle / collective pitch stick. Idle setting and throttle curve Note: Since electric power systems by their nature require no idle setting, it is not necessary to adjust the idle value. However, the matching of the throttle and collective pitch curve(s) must still be carried out as described here, in a similar way to a glow-powered helicopter.
3 4 OUTPUT OUTPUT +100% Hover point -100% 2 3 4 5 Control travel 2. The model lifts off below the centre point. +100% OUTPUT a) Rotational speed too high Remedy: on the “Ch 1 ¼ throttle” graphic page, reduce the throttle opening by reducing the value at Point 3.
This diagram only shows the change in the hover point, i. e. collective pitch minimum and maximum have been left at -100% and +100% respectively. OUTPUT +100% -100% 1 2 3 4 5 Control travel Continue adjusting these settings until you really do achieve constant main rotor speed over the full control range between hover and climb.
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Helicopter mixers Auto-rotation settings Auto-rotation allows full-size and model helicopters to land safely in a crisis, i. e. if the power plant should fail. It can also be used if the tail rotor should fail, in which case cutting the motor and carrying out an auto-rotation landing is the only possible way of avoiding a highspeed uncontrollable rotation around the vertical axis, invariably terminating in a catastrophic crash. And that is the reason why switching INTO auto-rotation occurs with zero delay.
For practice, then, you should set the value in this line so that the motor runs at a reliable idle during autorotation, but without the clutch engaging, so that you can open the throttle immediately to recover from an emergency; for an electric helicopter the motor should be reliably “off”. Tail rotor (static torque compensation) For normal flying the tail rotor is set up in such a way that it compensates for motor torque when the helicopter is hovering.
General notes regarding freely programmable mixers The two menus “Fixed-wing mixers” and “Helicopter mixers”, as described on the preceding pages, contain a wide range of ready-programmed coupling functions. The basic meaning of mixers has already been explained on page 88, together with the principle on which they work.
Free mixers Linear mixers Regardless of the selected model type, three linear mixers are available for each of the ten model memories, with the additional possibility of setting up non-linear characteristic curves. In this first section we will concentrate on the programming procedure for the first screen page. We will then move on to the method of programming mixer ratios, as found on the second screen page of this menu. The basic programming procedure 1.
sides of centre, or have to offset the mixer neutral point, then you should set or leave the pre-set mixers at “0”, and program one of the free mixers instead. ies according to the function which has been assigned to it in the “Basic settings” menu (pages 56 and 64) in the “Motor at Ch 1” column for fixed-wing models.
Mixer ratios and mixer neutral point Now that we have explained the wide-ranging nature of the mixer functions, we can move on to the method of programming linear and non-linear mixer curves. For each of the three available mixers the mixer curves are programmed on a second page of the screen display.
shift the mixer neutral point exactly to that position. If you have not already done so, turn the control - in our example this is CTRL 7 - to the left-hand end-stop and press the central SET button of the right-hand four-way button. The dotted vertical line now moves to this point - the new mixer neutral point - which always retains the “OUTPUT” value of zero in accordance with the mixer definition.
four-way button: MIX1 6 the switch channel “S” as the mixer input. Now move the selected switch to the OFF position, and move to the … el tr v +55% +20% offs 0% M1 M2 M3 el el el 6 c1 S 5 c1 3 SYM ASY Note: If you are setting up a switch channel mixer of the “S ¼ NN *” type, you must operate the assigned switch to achieve this effect. The vertical line then jumps between the left and right sides. Examples: 1.
Swashplate mixers Collective pitch, roll and pitch-axis mixers SP – MIXER ptch roll nick +61% +61% +61% the proper manner, then the first step is to change the mixer directions (“+” or “-”), before you attempt to correct the directions of servo rotation. Note: Ensure that the servos do not strike their mechanical end-stops if you change the mixer values.
Servo display Use the arrow buttons of the left or right-hand four-way button to leaf through to the “Servo display” menu point of the multi-function menu: mod.mem. ser vo set. D/R expo wing mixer ser vo disp fail-safe base sett. contr set. phase trim free mixer basic sett telemetr y Open the menu point by pressing the central SET button of the right-hand four-way button.
Basic settings Use the arrow buttons of the left or right-hand four-way button to leaf through to the “basic settings” menu point of the multi-function menu: mod. mem. ser vo set. D/R expo wing mixer ser vo disp fail-safe base sett. contr set. phase trim free mixer basic sett telemetr y Press the central SET button of the right-hand four-way button to open the menu point: Batt type Batt warning Touch Sense Contrast Display light RF Countr y Voice volume Beep volume Ni-MH 4.
GRAUBELE #01 5.2V 50% 3:33h GRAUBELE #01 5.2V 50% 3:33h 0:00 stop flt 0:00 «normal » K78 HoTT 5.5V M 0:00 stop flt 0:00 «normal » K78 HoTT 5.5V M This is accomplished by selecting the “Contrast” line using the arrow buttons cd of the left or right-hand four-way button: Screen backlight Batt type Batt war ning Touch Sense Contrast Display light of the right-hand four-way button (CLEAR) resets the value in the highlighted field to “Euro”. Ni-MH 4.
Fail-Safe FAIL SAFE Pos hold 1 2 3 4 5 6 Delay 0.25s STO The inherently higher operational security of the HoTT system compared with classic PPM technology is due to the ability of the HoTT receiver’s integral micro-processor to process the signals from “its” transmitter exclusively, and also to process any “dirty” control signals which it picks up.
Telemetry The “Telemetry” menu is used to call up and program transmitter and receiver data, and data generated by optional telemetry sensors (see Appendix), in real time. Receiver data are transmitted to the transmitter via the HoTT receiver’s integral downlink channel. One telemetry sensor can be connected to the Telemetry input of the following receivers: GR-12S HoTT (Order No. 33505), GR-12 HoTT (Order No. 33506) and GR-16 (Order No. 33508).
SETTING & DATA VIEW Telemetry The menus grouped together under the overall heading “Telemetry” are called up from the basic display of the mx-12 HoTT transmitter by holding the central ESC button of the left-hand four-way button pressed in for about three seconds. An alternative method of calling up this menu, which also applies to the transmitter’s other menus, is to briefly press the central SET button of the right-hand four-way button in the multi-function list: mod. mem. ser vo set.
L.R-VOLT Lowest receiver operating voltage since the last power-on, in Volt SENSOR1 Shows the values of the optional telemetry sensor 1 in Volt and °C SENSOR2 Shows the values of the optional telemetry sensor 2 in Volt and °C Signal quality (S-QUA) The signal quality (S-QUA) is sent “live” to the transmitter via the receiver’s downlink channel, and shows the signal strength in %. Receive performance (S-dBm) The receive performance (S-dBm) is displayed as a negative value, i. e.
RX SERVO RX SERVO OUTPUT CH: REVERSE : CENTER : TRIM : TRAVEL– : TRAVEL+ : PERIOD : 01 OFF 1500μsec –000μsec 150% 150% 20msec Before you carry out any programming at this screen display be sure to read the information on page 117.
if you are very lucky, the model aircraft will fly straight ahead for an indefinite period and then “land” somewhere or other without causing major damage. However, if the interference strikes in the wrong place and at the wrong time, then a power model could become uncontrollable and tear wildly across the flying field, endangering pilots and spectators. MODE Fail-Safe mode HOLD FAIL SAFE OFF F.S.Pos.
If interference occurs, the corresponding servo moves to the position displayed in the “POSITION” line for the duration of the interference, after the “delay time” set in the “DELAY” line. • HOLD If interference occurs, a servo set to “HOLD” maintains the position last assessed as correct for the duration of the interference.
RX FAIL SAFE OUTPUT CH: 06 INPUT CH: 04 MODE : OFF F.S.Pos. : 1670μsec DELAY : 0.75sec FAIL SAFE ALL: NO POSITION : 1670μsec RX FAIL SAFE OUTPUT CH: 04 INPUT CH: 01 MODE : FAI-SAFE F.S.Pos. : 1500μsec DELAY : 0.75sec FAIL SAFE ALL: NO POSITION : 1500μsec RX FAIL SAFE OUTPUT CH: 07 INPUT CH: 04 MODE : OFF F.S.Pos. : 1230μsec DELAY : 0.75sec FAIL SAFE ALL: NO POSITION : 1670μsec In this case servo socket 04 would respond in accordance with the Fail-Safe settings for CH 01.
33112_mx12_HoTT_2_GB.
The servo follows the stick movement with a linear response. C: EXPO = +100% and DUAL RATE = 70% The servo responds slowly to stick movements around the neutral position, but the curve becomes steeper with increasing control travel. Note: The control characteristics programmed at this point also affect mapped receiver outputs. RX SERVO TEST RX SERVO TEST ALL–MAX : 2000μsec ALL–MIN : 1000μsec TEST : STOP ALARM VOLT : 3.
ALARM VOLT (low receiver voltage warning) ALARM VOLT monitors the receiver voltage. The threshold can be set to any value within the range 3.0 to 6.0 Volt. If the voltage falls below the set alarm limit, an audible signal (interval beeping, long / short) is triggered, and “VOLT.E” flashes at top right in all “RX …” screen displays: RX SERVO OUTPUT CH: REVERSE : CENTER : TRIM : TRAVEL– : TRAVEL+ : PERIOD : VOLT.
SUMO if at least one channel at the SUMI is programmed to Fail-Safe. 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. If, in contrast, reception fails at both receivers simultaneously, then the receiver software (the version current at the time of printing these instructions) always reverts to the SUMO’s fail-safe settings.
SIMPLE DATA VIEW SIMPLE DATA VIEW Select the desired menu line using the arrow buttons cd of the left or right-hand four-way button … TELEMETRY SETTING & DATA VIEW SIMPLE DATA VIEW RF STATUS VIEW VOICE TRIGGER … and then press the central SET button of the righthand four-way button to bring up a list of further submenus.
The meanings are as follows: Value Explanation BAT1 / BAT2 Battery 1 / Battery 2 FUEL Fuel level / Fueltank indicator E/F Empty / full T1 / T2 Temperature of sensor 1 / sensor 2 CELL V Cell voltage of cell 1 … max. 6 ALT Current altitude 0m1 m/1 sec climb / descent 0m3 m/3 sec climb / descent CURRE. Actual current in Ampere POWER Actual voltage of drive battery RX + ELECTRIC AIRMODUL 0.0V 0A ALT +500m BAT1 0m/1s 0.0V 0m/3s T1 +20°C BAT2 0.0V T2 +20°C 0.0V 0A ALT +500m BAT1 0m/1s 0.
RF STATUS VIEW RX + GPS N W 0 Kmh S RXSQ 0 DIS 0m ALT +500m 0m/1s E 0m/3s 0m/10s N 0°00.0000 E 0°00.0000 If a GPS module with integral vario, Order No. 33600, is connected to the receiver, then this screen provides a graphic display of the data supplied by it. For more information on this module please see the Appendix, or refer to the product on the Internet at www.graupner.de.
VOICE TRIGGER VOICE TRIGGER First select the desired menu line using the arrow buttons cd of the left or right-hand four-way button … TELEMETRY SETTING & DATA VIEW SIMPLE DATA VIEW RF STATUS VIEW VOICE TRIGGER … then press the central SET button of the right-hand four-way button to open the selected sub-menu: REPEAT VOICE TRIGGER REPEAT 1SEC TRIG VARIO TRANSFER RECEIVER ––– ––– ––– Speech output is available via the headphone socket, but not until you have at least assigned a switch in the “REPEAT” line.
VOLT: MODELTIME: BATTERYTIME: STOPWATCH: RUNTIME: TIME: RECEIVER Select the desired menu line with the arrow buttons cd of the left or right-hand four-way button … VOICE TRIGGER REPEAT 1SEC TRIG VARIO TRANSFER RECEIVER desired line.
For your notes 133 33112_mx12_HoTT_2_GB.indd Abs52:133 06.06.
Trainer Mode Connecting two transmitters for trainer mode operations using a Trainer lead Use the arrow buttons of the left or right-hand four-way button to leaf through to the “Trainer” menu point of the multi-function menu: ser vo set. D/R expo wing mixer ser vo disp fail-safe teach/pupi ser vo set. D/R expo free mixer ser vo disp fail-safe teach/pupi contr set. phase trim free mixer basic sett telemetr y info disp contr set. heli mixer swashp.
The mx-12 HoTT Teacher transmitter can be linked to any suitable Pupil transmitter - even those operating on the “classic” 35 / 40 MHz band. For example, an mx12 HoTT Teacher transmitter can certainly be used in conjunction with an mx-12s Pupil transmitter.
Important note regarding three-pole barrel connectors: If you are using a Trainer lead with three-pole barrel connectors, on no account connect one of the ends marked “S” or “M” to a DSC system socket, as it is not suitable for this purpose. The DSC socket is only suitable for leads fitted with two-pole barrel connectors. Checking the system Operate the assigned Trainer transfer switch: • If the screen display changes from „¾T“ to „¾P“, the Trainer system is working properly.
Trainer mode operations with the mx-12 HoTT transmitter Due to the constant expansion of our range of products please visit the Internet at www.graupner.de for the latest information. mx-12 HoTT Teacher transmitter ter mx-12 HoTT Pupil transmitter mitter Trainer lead, Order No. 4179.1 Trainer lead, Order No. 3290.8 Trainer lead, Order No. 3290.7 Trainer lead, Order No. 4179.1 M Teacher transmitter with DSC socket Teacher transmitter with Teacher module Order No. 3290.2, 3290.19, 3290.
Wireless HoTT system Two HoTT transmitters can also be combined by wireless means to form a Trainer system as an alternative to the “classic” system using a Trainer lead, as described on the preceding pages. Preparations The trainer model must be programmed completely, i. e. with all its functions including trims and any mixer functions, both in a model memory of the mx-12 HoTT Pupil transmitter and also in the mx-12 HoTT Teacher transmitter.
2FL” setting in the “Basic settings” menu), or two elevator servos connected to 3 and 6 (“2Sv EL” setting in the “Basic settings” menu). You still have to assign a Trainer transfer switch on the right of the screen so that you can actually transfer control to the Pupil. This is accomplished by using the arrow buttons of the left or right-hand four-way button to place the marker next to “SW” at bottom right, and assign a switch as described on page 39.
Trainer mode operations … it is no problem for the Teacher and Pupil to stand a little way apart. However, you should never exceed a distance of 50 m (this is known as the call range), and no other persons should stand between the Teacher and Pupil, as this could reduce the effective range. Please note also that the wireless Trainer function exploits the downlink connection, and for this reason no telemetry data are transmitted from the model in this mode.
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Info Display Date, time, transmitter ID and memory card Use the arrow buttons of the left or right-hand four-way button to leaf through to the “info disp” menu point of the multi-function menu: ser vo set. D/R expo wing mixer ser vo disp fail-safe teach/pupi contr set. phase trim free mixer basic sett telemetr y info disp ser vo set. D/R expo free mixer ser vo disp fail-safe teach/pupi contr set. heli mixer swashp.
ABCDEF12 RFID 1.11 firmware ver. 2048MB SD-CARD 1234MB available 60% As already mentioned, it may take a certain amount of time for the available memory to be displayed after you switch the transmitter on, depending on the total capacity of the installed memory card. Program description: Info display 143 33112_mx12_HoTT_2_GB.indd Abs43:143 06.06.
mx-12 HoTT programming techniques Preparation, using a fixed-wing model aircraft as an example Programming model data into an mx-12 HoTT … … is easier than it might appear at first sight. There is one basic rule which applies equally to all programmable radio control transmitters, and not just to the mx-12 HoTT: if the programming is to go “smoothly” and the systems work as expected, the receiving system components must first be installed correctly in the model, i. e.
er of the model’s settings. As your piloting skills improve and you gain experience, it is very likely that you will feel the need to try out refinements such as expanded control systems, and to cater for these requirements you may find that the text deviates from the obvious order of options, or that one or other of the options is mentioned more than once.
First steps in programming a new model Example: non-powered fixed-wing model aircraft When programming a new model you should start by activating the … “select model” sub-menu (page 52) … in the “Model memory” menu. Use the arrow buttons cd of the left or right-hand four-way button to select a free model memory … 01 02 03 04 05 06 R06 ¿¿free¿¿ ¿¿free¿¿ ¿¿free¿¿ ¿¿free¿¿ ¿¿free¿¿ … then press the central SET button of the right-hand four-way button.
the “Wing mixers” menu the mixers “Brake ¼ NN*” and all mixers “from” and “to” flaps are activated. The warning message “Throttle too high” - see page 28 - and the “Motor stop” option in the “base sett.” menu is disabled. • “none/inv”: The brake system is “retracted” at the back position of the throttle / brake stick; in the “Wing mixers” menu the “Brake ¼ NN*” mixers are activated. In the “Aileron/flap” line of the “base sett.
“Servo settings” menu S1 S2 S3 S4 S5 rev 0% 0% 0% 0% 0% cent (page 72) 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% trav + … ... you can set various parameters relating to the servos, i. e. “direction of rotation”, “neutral setting” and “servo travel”, to suit the requirements of the model. By “requirements” we mean adjustments to servo centre and servo travel which are needed to compensate for minor tolerances in servos and slight inaccuracies on the model itself.
mod name stick mode motor at C1 tail type aile/flap 1 no normal 2aile … and if you wish to be able to deflect both ailerons up using the throttle / brake stick (Ch 1), then a suitable value should be entered in the “Brake ¼ AIL” line. diff aile.
Including an electric power system when programming a model and flap servos in your model. Connect your speed controller to the next vacant input, and assign one of the rotary proportional controls CTRL 7 or 8 - in our example CTRL 7 - to the selected input for example, “I6”. This is accomplished in the … An electric power system can be controlled in various ways: The simplest method of including such a power plant in a model program is to use the throttle / brake stick (Ch 1).
I5 free 3 I6 +100% +100% +100% +100% tr v + In the third column you can adjust servo travel to suit the speed controller you are using; alternatively you could use the “Servo travel” column in the … “Servo settings” menu S2 S3 S4 S5 S6 rev 0% 0% 0% 0% 0% cent (page 72).
Controlling the electric motor and up-aileron braking system using the Ch 1 stick Up-aileron deflection as landing aid Example 4 Butterfly / crow system as landing aid: ailerons up, flaps down Before we start the programming of this fourth example, and turn our attention to expanding the basic programming we have already discussed, we need to consider briefly the position of the throttle / brake stick at “motor OFF” or “brake OFF”.
Once you are confident that the direction of the Ch 1 stick is “correct” as far as the motor is concerned, the next step is to ensure that you can switch its effect on the motor on and off, so that you can also control the braking system. This is carried out in the … “Free mixers” menu M1 M2 M3 typ MIX1 c1 ?? ?? fro to 3 … where you need to program a free mixer “c1 ¼ c1”.
diff aile. ail rudd brak elev brak aile elev aile +33% +55% –5% +44% 0% ––– ––– ––– 3 ––– Note: The settings shown here are just examples, and must not be adopted under any circumstances without careful checking.
Operating the timers using the Ch 1 stick or a switch SW 1, 3 … 7 If, following on from the model programming described on the preceding pages, you have decided on Example 4 from the previous page, or you are using the Ch 1 stick (throttle / brake stick) to control motor power - independently of this programming example - then you can use the associated control switch to turn the stopwatch on and off automatically.
Using flight phases Within any of the ten model memories you can program up to three different flight phases (states of flight), each incorporating settings which can be entirely different from the others. Each flight phase can be called up by means of a switch. Flight phases represent the simplest and most convenient method of switching between different model settings in flight, and are programmed for different stages of a typical flight, such as “normal”, “thermal”, “speed”, “distance” etc.
Programming example: servos running in parallel In some cases a second servo is required to run in parallel with an existing servo; for example, if a second elevator or rudder is to be actuated by a separate servo, or where a second servo is needed to cope with very high control forces, or where two servos are required for a large control surface due to the high forces involved. This task could be solved simply by connecting both servos together in the model using a conventional Y-lead.
Programming example: Delta / flying wing On page 144, where the section on fixed-wing model programming starts, you will find general notes regarding the installation and set-up of the RC system in a model, and - of course - this applies equally to deltas and flying wings. The information on test-flying and refining the settings is also relevant, including the section on programming flight phases.
menu are disabled. • “Idle forward” or “Idle rear” The Ch 1 trim operates either forward or back. If you switch the transmitter on with the throttle stick too far in the direction of full-throttle, you will see the warning message “Throttle too high” on the screen. In the “Aileron / flap” line of the “base sett.” menu it is only possible to select “1AL” or “2AL”, and the mixers “Brake ¼ NN*” in the “Wing mixers” menu and all mixers “from” and “to” flaps are disabled. In the “base sett.
“normal” four-flap wing (two ailerons and two flaps), and therefore has all the options associated with this wing type. The method involves the “elev ¼ NN *” mixers, which were originally intended only for pitch trim compensation and non-standard applications. In this case they are “abused” by setting higher values than normal, in order to transfer the elevator signal to the control surfaces of the tailless model.
with suitable travel settings. The offset for both mixers should be +100%, as the Ch 1 stick is usually at the forward end-point when the airbrakes are retracted, and the winglet rudders are only required to deflect outwards proportionally when the brakes are extended. For your notes 161 33112_mx12_HoTT_2_GB.indd Abs11:161 06.06.
Programming example: F3A model aircraft F3A models belong to the category of powered fixedwing model aircraft designed for competition flying. They may be powered by an internal combustion engine or an electric motor. Electric-powered models are eligible and totally competitive in the international F3A “pattern” class, and also in the F5A electric aerobatic class. fixed-wing models we have already described. The auxiliary function “Retracts” is usually assigned to the auxiliary channel 6.
stick mode 1 motor at C1 idle re. cut off –100% +150% 1 tail type normal aile/flap 2aile The remaining settings should be adjusted as required to suit your personal preferences. You may find it necessary to assign transmitter controls to particular inputs to operate the retractable undercarriage or carburettor mixture adjustment. This is carried out in the … “Transmitter control settings” menu (page 74).
This completes the basic set-up for a typical F3A model. Correcting model-specific errors It is an unfortunate fact of life that even very carefully built models exhibit minute faults and inaccuracies which produce unwanted deviations when the model is flying; the mixers of a computer radio control system are then needed to compensate for these deficiencies.
“FAIL-SAFE settings” We strongly recommend that you make use of the safety potential of this option by at least setting the throttle position (glow-powered models) to idle, or the electric motor to stop, if a fail-safe event should be triggered. This simple precaution ensures that the model is much less likely to create havoc and cause property damage or personal injury.
Programming example: model helicopter In this programming example we assume that you have already read and understood the descriptions of the individual menus, and are by now familiar with the general handling of the transmitter. We also assume that you have assembled and adjusted the helicopter exactly according to the kit instructions. The electronic facilities provided by the transmitter should never be used to compensate for major mechanical inaccuracies.
“Basic settings” menu (pages 64 … 71) This is accomplished by moving to the “rx bind” line: timer phase 2 autorotat.
settings” menu. “Transmitter control settings” menu Note: Please note one important difference in later Graupner mc and mx radio control systems compared with earlier equipment: the first collective pitch servo and the throttle servo have been interchanged.
left or right-hand four-way button, pressing the central SET button of the right-hand four-way button, and then moving the two-position switch (SW 3) to the “ON” setting. The switch number (in our example “3”) now appears on the right of the screen: rotor direct pitch min timer phase 2 autorotat. right rear 5:00 C3 hover ––– 3 This switch should be located at a position on the transmitter where you can easily reach it without letting go of the stick, e. g. above the collective pitch stick.
model when practising “autos” at a later (!) date. Once you have set up the collective pitch curve, operate the auto-rotation switch again, then briefly press the central ESC button of the left-hand four-way button to return to the helicopter mixer menu select point. Now we move on to the “Ch1 ¼ thro” line, where you can set up the throttle curve. The first step here is to enter the idle trim range by adjusting the throttle curve.
ptch ch1 thro tail ch1 gyro swash lim. normal gyr ctrl 8 thr free lim ctrl 7 0% off SEL tr v Please be sure to read and observe the set-up instructions supplied with your gyro at this point, as there is a possibility that your helicopter will be uncontrollable if you set it up incorrectly! If your gyro features gain control from the transmitter unlike the type we are using in this example - you will need another free proportional control for it, e. g. CTRL 8.
automatically when you move the throttle limit slider towards full-throttle, and stops again when you move the limiter back to the idle range. Suggested refinement: speed governor At some time you may wish to install a speed governor (regulator) in your helicopter, e. g. the mc-Heli-Control, to try flying with a system rotational speed which is automatically maintained at a constant value.
For your notes 173 33112_mx12_HoTT_2_GB.indd Abs60:173 06.06.
Appendix PRX (Power for Receiver) Order No. 4136 Graupner HoTT GPS / Vario module Order No. 33600 Graupner HoTT Vario module Order No. 33601 A highly developed stabilised receiver power supply with intelligent power management. The unit constitutes a stabilised user-selectable power supply for the receiver, and provides a further enhancement in the reliability of the airborne power supply.
Graupner HoTT General Engine Module Order No. 33610 Graupner HoTT General Air Module Order No. 33611 Graupner HoTT Electric Air-Module Order No. 33620 General sensor for Graupner HoTT receivers and models with internalcombustion or electric power system: • 2 x temperature and voltage measurements with warning thresholds for min. and max. voltage and min. and max. temperature • Individual cell measurement with min.
Graupner HoTT RPM magnet sensor Order No. 33616 Graupner HoTT Smart-Box Order No. 33700 Optional speech output module for Graupner mx-12 HoTT Order No. 33001.71 Graupner HoTT RPM optical sensor Order No. 33615 A vast range of different functions combined in a single device: that’s what destines the SMART-BOX to be your intelligent companion in future.
FCC Information Graupner mx-12 HoTT #33112 FCC ID:ZKZ-MX-12 FCC ID: ZGZ-mx-12 FCC Label Compliance Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference. 2. This device must accept any interference received, including interference that may cause undesired operation. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
