MX-20 Graupner HoTT Computer System 2.4GHz

Safety:

FHSS, frequency hopping over up to 75 channels

Maximum interference immunity through optimised frequency hopping, wider channel spread and antenna diversification

Intelligent data transfer including error correction

Extremely wide range

Range test and warning function

Undervoltage warning

Extremely wide receiver operating voltage range of 3.6 V to 8.4 V (functional up to 2.5 V)

Numerous fail-safe functions

Key-lock function to prevent unintentional changes to menus


Precision:

Shorter response times can be set (10 ms period time)

No additional delays due to module processors All hopping management is handled directly by the 32 bit main processor.

Synchronous servo operation made possible by simultaneous control of servo outputs in blocks of 4


Pilot feeling:

Essentially delay-free control responses due to direct processing

Real-time telemetry evaluation

Optional voice output for timers, telemetry data and warnings via headset connector

Repeat function and continue function for voice output can be programmed via freely assignable switches

Pre-selection of voice output to be used

Separately adjustable volume for beeps and voice output

Integrated telemetry display with 8 x 21 characters or 128 x 64 pixels, optionally in text or graphics form

Duration of display lighting: ALWAYS, 30 s, 60 s, 90 s, 120 s

Micro SD card slot for storage of telemetry data similar to a black box and for expansion of model memories

PC software for analysis or display of downloaded telemetry data

Buzzer signal programmable for peak T/P function receiver output, satellite receiver, simulators, flybarless stabilization systems, etc.

Model-memory-dependent binding, except for copied model memories

Wireless teacher/pupil function

3 flight phases programmable

Swashplate limiter

Motor off function

Numerous fixed-wing and helicopter mixers


Other features:

Simple and extremely fast binding

Free channel assignment (channel mapping), transmitter and receiver mixer functions and all servo settings are simple to program

Binding of any number of receivers for channel expansion (16 channels maximum) The last receiver bound sends the telemetry data.

Update capability via PC interface guarantees future viabilityThe mc-20 HoTT with its 12 control functions can give experienced RC model builders control over virtually any model. The use of Graupner HoTT 2.4 GHz transmission technology safeguards high functional reliability through bidirectional communication between transmitter and receiver supporting integrated telemetry, voice output via headset connector and ultra-fast response times.
The transmitter has 24 model memories. Programming is simplified by a programming technique implemented with capacitive touch buttons. A high-contrast, 8-line blue-illuminated graphic display ensures perfect presentation of all parameter settings and telemetry data. It is possible to store telemetry data and an extension of model memories on a micro SD memory card.
USB connection to read and write the model's memories as well as for firmware upgrades.

Age recommended by manufacturer: 14 years and upMicrocomputer remote control set implemented with the very latest 2.4 GHz Graupner HoTT technology
Bidirectional communicationbetween transmitter and receiver
Wireless T/P function
6 different languages (German, English, French, Italian, Spanish and Dutch) available via software update. For the availability of a given language, go to the Download area.
Storage of telemetry data with date and time
Servo cycle times of 10 ms can be selected for digital servos
Ultra-fast response times due to direct and reliable transmission of data from the main processor to the 2.4 GHz transceiver. No additional delays due to detours via a module processor.
Short antenna, collapsible
Operating and programming are similar to the proven concepts implemented in the mx-24
A high-contrast, blue-illuminated graphic display ensures perfect control of parameter settings such as model type, model memory, timers and operating voltage.
12 control functions
Free assignment of all switches
24 model memories
7 switches/keys , including 2 3-stage-switches, 3 2-stage switches, 2 keys, 3 analogue switches already installed
Modes 1 to 4 freely selectable
CAP TOUCH operating elements with key lock function to prevent unintentional operation.
CAP TOUCH change of display from the main menu to the telemetry main menu via ESC.
Numerous telemetry displays, programming functions and evaluation functions are presented directly on the transmitter's screen
Voice output can be called up via freely programmable switches
Extensive programs for fixed-wing and helicopter models
Swashplate limiter
"Monitor" switch to check all switches and control switches
12 freely programmable mixers for fixed-wing or helicopter models, each with freely selectable input and output functions, including: 4 curve mixers, 5 point curve technology in 1 % increments, easy to adjust curve values at up to 5 points for throttle, pitch, tail or other non-linear actuations. The processor in the CPU employs an ingenious method of calculating polynomial approximations for truly-rounded, ideal MPC (multi-point curve) mixer curves.
7 flight-phase programs can be individually adapted for each model and given a name. The switchover time is programmable separately.
SUPER SERVO menu with a perfect overview of all servo setting data and simple parameter correction for 4 "levels" (direction of rotation, mid-point setting, separate servo travel on both sides and separate travel limiting on both sides for 12 servos with a total of 72 possible settings)
SUPER-DUAL-RATE, EXPO and EXPO/DUAL-RATE menu with 36 possible settings for 3 servo functions and 7 flight phases.
Highly practical multi-function menu for fixed-wing and helicopter models. Entry of the number of aileron and flap servos automatically programs all necessary mixer functions in the multi-function "Wing mixers" menu. Differential aileron mixer, butterfly mixer, dual-flap mixer, automatic gyro set function and other special functions
Helicopter swashplate mixer for 1, 2, 3, or 4-point steering.
Fail-safe for 12 servo functions
Convenient timers menu. Stopwatch system, alarm timer, countdown timer, laps counter, etc. Two timers and one lap counter/timer can be displayed at the same time.
Stopwatch with history: in addition to the lap counter there is a time 1 which captures the ON time and a time 2 which records the ON and OFF times separately.
The transmitter's operating time timer is automatically reset to zero by the battery charging process.
Flight phase switch assignments: now 6 switches, 2 with priority function. Every switch combination can be named freely. This makes the number of flight phases independent of the number of flight phase switches.
Linearising switchplate servos: electronic compensation for non-linear travel of swashplate rotary servos.
Tail type normal, V-tail, Delta/flying-wing and 2 EL Sv 3+8 (which immediately makes 2 coupled elevator servos available without using free mixers or dual mixers)
Flap count up to 4 AIL/4 FL: Full support of 8 wing servos, now even without use of free mixers.
Flight phase switching delay, can be switched off: the delay time can be switched off for individual channels flight phase by flight phase (e.g. for motor off in electric models or to activate/deactivate helicopter head lock).
16 phase names:.
Fixed-wing mixer: New concept for the multi-flap menu to simplify settings of up to 8 wing servos on a flight-phase-specific basis in a comprehensible manner without requiring the use of free mixers.
Number of flight phases: (fixed-wing: 7, helicopter: 6 + AR)
Phase trim
Switchable Snap-Flap mixer EL => FL with a new offset function for easy course corrections and fast turns
3 ring limiters for Voith-Schneider and similar drives
Channel sequencer for 3 channels for folding motors and landing gear doors
Swapping of servo assignment at receiver output on transmitter side and receiver sideThe Set contains:Graupner HoTT mx-20 microcomputer telemetry transmitter with built-in NiMH 2000 mAh transmitter battery, Graupner HoTT GR-16 receiver and 200mA transmitter charger, uSD-card, update cableGeneral HoTT characteristics:Simple and extremely fast binding
Range test and warning function
Undervoltage warning
Extremely wide receiver operating voltage range of 3.6 V to 8.4 V (functional up to 2.5 V)
Fail-safe, free channel assignment (channel mapping), mixer functions and all servo settings are easy to program with the internal telemetry
Binding of any number of receivers for channel expansion (32 channels maximum)
Up to 4 servos can be controlled simultaneously as a block in a servo cycle time of 10 ms (digital servos only)
Maximum noise immunity due to optimised frequency hopping and wider channel spread
Intelligent data transfer including error correction
Extremely fast rebinding, even at maximum distance
Real-time telemetry evaluation
More than 200 systems can be used simultaneously
Update capability via USB interface or micro SD card guarantees future viability