GRAUPNER mc-18, Programming Manual

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Code 78 Code 88 Code 99
FAIL SAFE BAT Input Lock Transmitter Lock
Activating Battery Fail-Safe Code Lock for Keyboard Input Numerical Transmitter Lock
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m c - 1 8 E M O D E L 1
B A T T F . S . O F F
The automatic battery fail-safe serves to warn the
pilot of dropping receiver battery voltage and to give
him a chance to avoid an impending crash caused by
depleted receiver batteries.
As soon as the voltage at the receiver battery drops
below a predetermined value, a servo permanently
allocated to the battery fail-safe function and acting as
an indicator of the imminent depletion of the receiver
power supply will be actuated. In the case of a fixed-
wing model program, this will be the servo wired to
channel 1 (throttle). For helicopter programs it will be
channel 8, which could for example be used for
switching on the lights, etc.
For the position, to which the servo will be shifted,
three different values may be programmed:
+75% Three-quarter deflection in one direction
0% Servo neutral position
-75% Three-quarter deflection in the opposite
direction
When checking adjustments, the servo position
display (code 74) will prove helpful.
The fail-safe display can be cleared again by
actuating the operating element concerned for a
moment (e.g. throttle stick for fixed-wing) and the
servo can then be controlled in the normal manner. A
model should be landed straight away after the
battery fail-safe has been indicated. After code 78 has
been called the display will read “BATT F.S. OFF”.
Pressing the
INC key activates the battery fail-safe
and permits selecting the display position of the servo
in sequential order –75%, 0%, +75%, OFF. Pressing
clear will switch off the battery fail-safe immediately.
K E Y B O A R D L O C K
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The input lock prevents changes of transmitter
settings by unauthorised persons or accidental
pressing of the input keys. The lock does not prevent
unimpaired use of the transmitter when flying models
using the elements activated, but no inputs will be
possible via the keyboard, hence a change of models
is not possible.
Activation of the keyboard lock is performed using
code 88 and entering an optional 3 figure combination
using keys
1 … 9 , followed by the ENTER key.
The lock becomes effective by turning the transmitter
off and on again. After pressing the
ENTER key, the
request “push key word” appears. Only after entering
the correct combination of numbers will the lock be
released. The lock remains released until the
transmitter is turned off, after which it will be active
and it has to be unlocked again.
The combination of numbers can be changed at any
time, after releasing the lock, by calling code 88 again
and entering the new combination.
To clear the input lock completely, the CLEAR key
has to be pressed instead of entering a combination.
The input has to be terminated by pressing the
ENTER key.
Please ensure you remember the combination you
set, or you will have to return the transmitter to
Graupner Service for decoding.
A L L C L O S E
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As a precaution against theft an electronic transmitter
lock can be enabled using code 99. It prevents the
putting the transmitter into operation unless the
correct combination of figures is input after turning the
transmitter on.
Activation of the transmitter lock is achieved by calling
code 99 and entering an optional 3 figure combination
using keys
1 … 9 , followed by the ENTER key.
The lock becomes effective after the transmitter has
been turned off. On activation of the transmitter, the
request “push key word” will be displayed and it is
only after entering the correct combination of digits
that the lock will be released, permitting the
transmitter to be used. The keyboard, however,
remains locked as in the case of code 88. After
pressing the
ENTER key, the request “push key
word” appears again and the correct combination
must be entered to obtain access to the settings.
The lock remains released until the transmitter is
turned off, after which it will be active and it has to be
unlocked again.
In the case where the combination entered for the
input lock (code 88) differs from the combination of
the transmitter lock (code 99), the combination of
numbers for code 99 will also apply to the input lock
and replace the figures previously entered into
code 88.