Foreword - GRAUPNER MC-20 HoTT Programming Manual

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the Newest Generation of Remote Control Technology
The technical advances across the entire spectrum
of model building is an ever-present challenge to
design engineers. This is why the introduction of
new transmission technology in the 2.4 GHz band
represents a new milestone.
The HoTT-System (Hopping Telemetry Transmission)
developed by Graupner is a synthesis of know-how,
engineering and testing done around the world by
professional pilots.
Established Graupner HoTT techniques theoretically
permit over 200 models to be operated at the same
time. However, because of the interspersed radio-
frequency utilization permitted by certifi cation for the
2.4 GHz ISM band, this number is signifi cantly lower
in practical application. Nevertheless, in general
more models can be operated simultaneously in the
2.4 GHz band than would be the case in conventional
35 or 40 MHz frequency bands. The real limiting
factor is – as often before – is still likely to be the
size of available operating space (i.e. airspace for
aircraft). Alone the fact that it is no longer necessary
to coordinate transmitting frequencies with other
pilots in the vicinity (which is sometimes quite diffi cult
in broken landscapes, such as on hillside slopes)
represents an enormous boost for remote control
operating security.
Bidirectional communication between transmitter
and receiver, by way of a return channel built into
the receiver, permits convenient access to data and
programming in the HoTT receiver. For example,
this makes it possible to swap receiver outputs or to
divide up control functions among multiple servos
(channel mapping). Servo travel and servo rotation
directions in the receiver can also be matched to
one another with these facilities. Telemetry data,
like VARIO and GPS data, can be called up from
optionally available modules.
Based on the mc-24 Graupner/JR computerized
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remote control system, the
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Foreword

control system has been especially developed for
experienced RC pilots All conventional model types
can be readily operated with the
system, regardless of whether the model is a winged
aircraft, helicopter, ship or land vehicle.
Complex mixed-control functions of guiding surfaces
are often necessary for winged aircraft (rudder,
elevators) and helicopter models (swashplate).
Thanks to modern computer technology, very diverse
model requirements can be programmed in the
simplest conceivable manner with touch-sensitive
keys (CAP Touch). Simply select the given model
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type from the
will assemble all signifi cant mixer functions and
coupling functions automatically. This eliminates
the need for separate modules in the transmitter
to implement complex coupled functions and also
makes sophisticated mechanical mixer mechanisms
in the model unnecessary. For example, this makes
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the HoTT transmitter fully equipped with both
software and hardware to operate the well-known
NAUTIC modules on the receiver side. The "channel
sequencer" is new. It permits the operation of up to
three servos to be automated.
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The
reliability without having to forgo great operating
convenience. The
system has 80 model memory locations. Additional
fl ight-phase-specifi c settings can be stored in every
model memory location. For example, such settings
can be made for various parameters that can be
called up to implement particular fl ight maneuvers at
the "press of a button". Additional model memories
can be stored on the SD card, which is included
standard with the set. Even telemetry data can be
recorded for subsequent evaluation on a PC.
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Since the
displays, the lower display has been optimized for
comprehensible, simple operation of the software.
HoTT remote
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HoTT
HoTT program and its software
HoTT system offers optimal security and
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HoTT remote control
HoTT is equipped with two
The graphic representation of mixer functions
is particularly helpful. The upper display allows
telemetry data to be called up from the receiver.
Functionally-related options are clearly arranged
by content in a simple organization. The clear,
comprehensible program structure permits a beginner
to quickly become familiar with the various functions
and able to use all options pertinent to his level of
expertise with remote control models.
This handbook describes every menu in detail. There
are tips, many notices and programming examples to
supplement the descriptions and also explanations
for model specifi c technical terms, like transmitter
control, dual rate, butterfl y, and so on.
Please observe the safety notices and technical
notices. Read through the instructions attentively.
Before usage, test all functions by simply attaching
servos to the receiver included in the set. While doing
this, observe respective notes on page 68. This will
help you learn the essential operating techniques and
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functions of the HoTT.
Always handle your remote controlled model with a
sense of responsibility so that you do not endanger
yourself or others.
The Graupner team wishes you much pleasure
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and success with your HoTT, the newest
generation of remote control systems.
Kirchheim-Teck, December 2011