GRAUPNER mc-16 Programming Manual page 96

Corresponding parameter settings are made in the
»Helicopter mixer« (see page 184); refer also to the
"Principle of the Auto. C1 Pos." topic which follows.
The "Autorotation" name is permanently assigned to
this phase and it is included in the base screen and
the screens of all flight phase dependent menus. This
name can NOT be changed. It is only possible to as-
sign a switch to this option at the right of this display,
as described on page 60. If a switch is assigned,
it will have absolute priority over all other flight-
phase switches:
Base setup model
RF transmit
RF Range Test
DSC Output
Autorotation
More about flight-phase programming can be found
in the text beginning on page 184 in the»Helicopter
mixer« section.
Autorotation C1 position
The autorotation flight-phase can alternatively be ac-
tivated by a threshold point for the C1 throttle/pitch
stick. To do this, use the  selection keys of the left
or right four-way button to move into the "Autorot. C1-
Pos." line.
As soon as this display line has been selected, its
value field, located above the column label STO will be
framed.
96 Program description - Base setup models | Helicopter models
Move the C1 stick into the desired threshold switch-
over position then tap the centre
four-way button. The current value will be displayed,
e. g.:
ON
99sec
PPM10
–––
After this has been done, use the selection keys to
move into the column above the switch symbol then
assign a switch to this field, as described in section
"Physical control, switch and control switch assign-
ments" on page 60:
Once this activation switch is closed, the first occur-
rence of a threshold underrun will cause the program
to switch over to "Autorotation" and then remain inde-
pendent of C1 position in this flight phase until the acti-
vating switch, in this example switch 4, is again "OFF".
"Autorot. C1-Pos." has precedence over all other flight-
phase switches.
Corresponding parameter settings for ...
Base setup model
RF Range Test 99sec
DSC Output PPM10
Autorotation –––
Auto.C1 Pos. 0% –––
STO
SET key of the right
Base setup model
RF Range Test 99sec
DSC Output PPM10
Autorotation
–––
Auto.C1 Pos. –66% –––
STO
Base setup model
RF Range Test 99sec
DSC Output PPM10
Autorotation –––
Auto.C1 Pos. –66% 9
STO
• pitch servos
• throttle servo
• tail rotor servo
• swashplate rotation, if available
• gyro setting
... are made in the »Helicopter mixer« menu,
page 184.
Cut off
Within the framework of autorotation settings for the
mc-16 HoTT and mc-20 HoTT transmitter's heli-
copter program, there are parameters for an emergen-
cy "cut off" of the throttle servo or motor actuator, refer
to the programming proposal on page 326. However,
this option is not available if an idle position is speci-
fied in the "Throttle position AR" line of the »Helicopter
mixer« menu instead of an (emergency) OFF position;
for example, to avoid restarting the motor after every
landing during autorotation practice.
This option can be used on the
mc-16
HoTT transmitters as an emergency OFF
mc-20
function as well as an alternative "cut-off trim", see
"digital trims" on page 62.
Depending on the "forw./rear" choice made for the
"Pitch min" line of the »Helicopter type« menu, this
"cut off" option can be coupled to a switch for thrott ling
down a speed controller or a carburettor servo to the
motor OFF (or idle) position.
This cut-off (or idle) position is specified in the left col-
umn's field, above the SEL column label, and its value
is to be established through trial and error.
However, the speed controller or throttle servo only
moves to the selected position when two conditions
are fulfilled: a switch is operated, and a particular servo
position or switching threshold is exceeded. This is
done by setting the desired servo position (threshold
value) into the middle column field, directly over the
column label STO, then selecting the appropriate ON/
OFF switch function in the right column.
HoTT and