GRAUPNER mx-16 ifs, Programming Manual

Page: 33 / 132

33 Description of transmitter: switch assignment
Assigning switches and control switches
The basic procedure
At many points in the program there is the option of using
a switch (SW 1 … 4, SW 6/7, PB 8) or a control switch
(C1 … 3; see below) to operate a function, or to switch
between settings, such as the DUAL RATE / EXPO
function, fl ight phase programming, mixers and more.
The
mx
-16iFS allows you to assign several functions to
a single switch.
The process of assigning switches is exactly the same
in all the relevant menus, and we will explain the basic
programming procedure at this point so that you can
concentrate on the special features when reading the
detailed menu descriptions.
A switch symbol appears in the bottom line of the screen
at all programming points where switches can be as-
signed:
If you move to this fi eld using the rotary cylinder, the
switch symbol fi eld is highlighted (inverse video – black
background):
This is the procedure for assigning a switch:
Press the rotary cylinder. 1.
The following message appears on the screen:
push desired switch
i n t o p o s i t i o n O N
Now simply move the switch you wish to use to the 2.
“ON” position, press the push-button, or move the
Ch 1 stick from the “OFF” position in the direction of
“ON”. Please note: the so-called control switches as-
signed to this transmitter control (see right) carry out
the task of an ON / OFF switch in software; the same
applies to the throttle limiter (see page 62) which is
available in the “Helicopter” model type. This com-
pletes the assignment process.
Changing the direction of switching:
3.
If the switch turns out to work in the wrong direction,
you can correct it as follows: move the switch to the
desired OFF position, select the switch symbol once
more and assign the switch again, this time with the
switch direction you prefer.
Erasing a switch:
4.
Activate the switch symbol as described under Point
2, then press the
CLEAR button.
Special feature: SW 4 / PB 8
This “push-button” can be assigned in two ways:
A brief press as On / Off switch “4”, i. e.. the switched •
state (“on” or “off”) changes every time you press the
button.
A longer press as momentary button “8”, i. e.. the
•
switch is only ON as long as the button is held
pressed in.
Note:
Every time you switch the transmitter on, switch 4 always
defaults to the “OFF” position.
Transmitter control switches
Many functions are best controlled automatically by a
particular position of the Ch 1 transmitter stick (or the
throttle limiter in the case of helicopters), rather than by a
conventional physical switch.
Typical applications:
Automatically switching an on-board glowplug ener- •
gizer on and off according to the throttle position of
the Ch 1 stick (“C1” or “C2”). In this case the switch
for the plug energizer is controlled by a mixer at the
transmitter.
Automatically switching a stopwatch on and off to
•
record the pure “fl ight time” of a model helicopter; this
is accomplished using the “C3” switch of the throt-
tle limiter.
Automatically switching the “ail
•
¼
rudd” mixer off
when the airbrakes are extended, in order to keep
the wings parallel with the ground when landing on
a slope face, without the (usually coupled) rudder af-
fecting the model’s heading.
Automatically extending landing fl aps with coupled el-
•
evator trim adjustment on the landing approach, as
soon as the throttle stick is reduced below the set
threshold point.
Automatically switching a stopwatch on and off in or-
•
der to time the run of an electric motor.
For both model types the
mx
-16iFS transmitter’s
software caters for these purposes with two “control
switches” of this type; they can be assigned to the Ch 1
stick: “C1” is switched on at around -80% of full travel,
while “C2” is switched on at 80%. The Helicopter
program also includes an extra control switch “C3” on the
throttle limiter close to the 100% point; see pages 33 and
62.
All these control switches can be included without
restriction in the free programming of the switches, i. e..
they can be assigned to a function instead of a physi-
cal switch. This means that you are able to assign one
of the control switches C1 … C2 (or C1 … C3) instead
of a physical switch at any point in the software where
switches are assigned. All you have to do is move the Ch
1 stick or the throttle limiter control (by default the rotary
proportional control CTRL 7) from the desired “OFF”
position in the direction of “ON”.