GRAUPNER mx-12 Hott, Programming Manual

Page: 114 / 200

114 Program description: helicopter mixers – model helicopter
Helicopter mixers
Flight phase-specific mixers for collective pitch, throttle and tail rotor
In the “
Base settings
” menu a method of switching flight
phases can be activated by assigning the appropriate
switches to “Phase 2”, “Phase 3” and “Auto-rotation”.
You can then switch between the phases “normal” and a
second and third phase - to which you can assign more
appropriate names yourself, if necessary - using one of
the non-centring switches SW 2 … 8; a further switch
then selects “Auto-rotation”.
However, “Phase 2” al-
ways has precedence over the “normal”-phase and
“Phase 3” and auto-rotation always has precedence
over all other phases; see pages 87.
If you have not yet assigned switches for the flight
phases, you should do so now. Use the arrow buttons
of the left-hand touch-key to move to the right-hand
column, marked by the switch
symbol at the bot-
tom of the screen, then touch the central SET button of
the right-hand touch-key. The switches are assigned as
described on page 57:
pitch min
rear
timer 10:01 C3
phase 2
phase 3
hover
speed
autorotat.
2
5
4
Phase 1 always bears the designation “normal”. Both
the number and name of this phase are permanently
assigned, and cannot be altered. For this reason the
“normal” phase is not stated as Phase 1 in the “
Base
settings ” menu; it is simply concealed.
By default “Phase 2” is assigned the phase name
“hover”, and “Phase 3” the name “speed”, but you can
change these at any time if you prefer: touch the central
SET
button with the right-hand touch-key, and use the
arrow buttons of the right-hand touch-key to select one
of the following names:
hover •
acro •
acro 3D •
speed •
test •
Description of the helicopter mixers
Five-point curves are available for setting up the control
characteristics of “collective pitch”, “Ch 1
 throttle” and
“Ch 1  tail rotor”. Using these curves it is possible to
program non-linear mixer ratios along the travel of the
transmitter stick for these mixers. Move to the display
page for setting 5-point curves by touching the central
SET button of the right-hand touch-key (see below).
In contrast, the mixers “Ch 1  throttle” and “Ch 1 
tail rotor” are not required for the “Auto-rotation” flight
phase (described in the section starting on page 124);
instead they are automatically switched to a (user-varia-
ble) pre-defined value.
A value must be entered in the “Gyro” and “Input 8” lines:
touch the central
SET button of the right-hand touch-
key, then enter a value in the highlighted field using the
arrow buttons of the right-hand touch key - in a similar
fashion to changing the transmitter centre position or
the offset position with other radio control systems. This
set-up facility is rounded off with the “Swashplate limit”
option: this restricts the maximum travel of the swash-
plate servos to the value you set, in the form of a limiter.
All these options are required for the basic process of
setting up a model helicopter.
Altered parameters can be reset to the corresponding
default values at any time by simultaneously pressing
the  or  buttons of the right-hand touch-key
(
CLEAR
).
The name of the currently selected flight phase is
displayed in the “
Helicopter mixers ” menu as well as
in the transmitter’s basic display; this is designed to
ensure that any changes you make actually apply to
the appropriate flight phase. Note that the servos do not
change from one setting to another abruptly; they move
smoothly with a transition time of around one second.
This does not apply to auto-rotation: when you switch
INTO auto-rotation, the change takes place immediately.
If you operate the switch selected for a particular flight
phase, the associated flight phase is superimposed at
the left-hand bottom edge of the screen, e. g. “normal”.
ch1
ch1
ptch
thro
tail
normal
gyro 0%
inp8 0%
Now you can program the settings for this flight phase.
Basic programming procedure
Use the arrow buttons 1.  of the left or right-hand
touch-key to select the desired option.
Touch the central
2. SET button of the right-hand touch-
key, and the screen switches to the set-up page (
symbol at the bottom edge of the screen), or the
corresponding input field is highlighted (black back-
ground).
Define the mixer values using the arrow buttons of
3.
the right-hand touch-key, moving the throttle / collec-
tive pitch stick at the same time if necessary.