GRAUPNER mx-20 Hott Programming Manual Download

Page: 212 / 296

212

Detail program description - Control adjust

model may become uncontrollable and "tear" across the
fl ight fi eld completely out of control, putting the pilot and
spectators at risk.
Therefore, it would obviously be benefi cial to program
the the function "Motor off" at the very least, in order to
prevent such risks. If necessary, seek the advice of an
experienced pilot in order to fi ne a "logical" setting for
your model.

And then another brief notice regarding the three
possible versions of the

mx-20

HoTT transmitter for

the setting of Fail Safe:
The easiest, and recommended, way to fail-safe settings
is the use of the "

Fail Safe

" menu, which can be

reached from the multifunction list, see page 196.
Similarly, in order to achieve the same result somewhat
more laboriously, the "FAIL SAFE ALL" option described
on the following pages is also available.
In addition, there are the relatively elaborate methods
of the of the individual adjustment using the options
"MODE", "F.S.Pos." and "DELAY". The description of
these variants begins with the "MODE" option further
below.

Value

Explanation

Possible

settings

OUTPUT CH Output channel

(servo connection
of the receiver)

1 … depending on
receiver

INPUT CH

Input channel
(channel
coming from the
transmitter)

1 … 12

MODE

Fail-Safe mode

HOLD
FAIL SAFE
OFF

F.S.POS.

Fail-safe position

1000 … 2000 µs

DELAY

Reaction time
(delay)

0.25, 0.50, 0.75
and 1.00 s

FAIL SAFE
ALL

Save of the Fail-
safe
Positions of all
control channels

NO / SAVE

POSITION

Display of the
saved Fail-safe
position

Between approx
1000 and 2000 µs

OUTPUT CH (servo connection)

In this line you select the respective OUTPUT CH (servo
connection of the receiver) to be set.

INPUT CH ( selection of the input channel)

As already mentioned on page 208, the control functions
of the

mx-20

HoTT transmitter can be arbitrarily

distributed to multiple receivers, if necessary, or even
assigned to multiple receiver outputs with the same
control function. For example, this might be used in
order to be able to control two servers for each aileron
fl ap or an oversized rudder with linked servos instead of
an individual servo.
Distribution to multiple HoTT receivers, in turn, offers the
advantage of not having to use a long servo cable, e. g.
for large models. In this case, bear in mind that only the
receiver selected in the line "TEL.EMPF." through the
"

Telemetry

" menu can be addressed!

The 12 control channels (INPUT CH) of the

mx-20

HoTT can be appropriately managed through so-called
"Channel Mapping" (channel assignment) whereby
a different control channel is assigned to the servo
connection selected in the OUTPUT CH line for the
receiver in the INPUT CH line. ATTENTION: If, for
example, you have specifi ed "2AIL" for the transmitter
side in the line "Aile/fl aps" in the "

Base setup model

menu, the

Control function 2

(

Aileron)

is already

distributed to the

Control channels 2 and 5 for the left

and right aileron

. The corresponding

INPUT CH of

the receiver,

which must also be mapped, would be

the channels 02 and 05 in this case; see the following
example.

Examples:

You would like to control each aileron fl ap with two or

•

more servos for a large model:
You would like to control each aileron fl ap with two or

•

more servos for a large model:
Assign one of the two standard aileron control
channels 2 or 5 as INPUT CH to the corresponding
OUTPUT CH (servo connections) depending on the
left or right bearing surface.
You would like to control the rudder with two or more

•

servos for a large model:
Assign the same INPUT CH (control channel) to the
corresponding OUTPUT CH (servo connections). In
this case, this is the standard rudder channel 4.

MODE

The settings of the options "MODE", "F.S.Pos." and
"DELAY" determine the behavior of the receiver in the
event of a failure in the transmission from transmitter to
receiver.
The setting programmed under "MODE" is

always

based