User's Manual

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Using the transmitter for the ﬁ rst time

Preliminary notes

In theory the Graupner HoTT system permits the simul-

taneous operation of more than 200 models.

However, in practice the mixed operation of different

technical systems in the 2.4 GHz ISM band - as requi-

red by the approval regulations - reduces this number

considerably. Generally, however, it will always be

possible to operate even more models simultaneously

on the 2.4 GHz band than on the 35 / 40 MHz frequency

bands which we have used to date. However, the actual

limiting factor - as it has always been - is likely to remain

the size of the (air-) space available. The simple fact that

no frequency control procedure is necessary - a great

convenience in itself - equates to an enormous gain in

safety, especially at ﬂ ying sites where groups of pilots

may be distributed over a large area, with nobody in

overall control.

Battery charged?

When you take receipt of your transmitter, the battery

will be in the discharged state, so you must ﬁ rst charge

it as described on page 81. Otherwise you will hear a

warning signal and the Status-LED ﬂ ashes ﬁ ve times in

quick succession when falling below a certain voltage to

remind you to recharge it.

This warning threshold for the transmitter battery can be

selected in the menu „TX“ of the optional the Smart Box,

page 114.

Switching the transmitter on

After switching on the Status-LED glows constantly or is

blinking to indicate the current transmitter mode.

See the following table:

Using the transmitter for the ﬁ rst time

Preliminary notes regarding the mx-10 HoTT transmitter

To change the mode, move the mode switch on the

transmitter in the desired position, press and hold the

BIND-button and then switch on the transmitter.

Note: after programming the „normal“ mode, the trans-

mitter is in fail-safe programming mode (see page 111),

if you do not want to program anything here, turn off the

transmitter again now.

The programmed mode is indicated with LED and

buzzer signals after switching on the transmitter, see the

table above.

Mode normal

teacher

pupil

LED Status Buzzer Description

green LED on - Transmitter ON, but no bounded receiver

or receiver bound, but no telemetry signal

orange LED on - Transmitter mode „normal“, country setting: general

orange LED ﬂ ashes - Transmitter mode „normal“, country setting: France

orange LED ﬂ ashes once beeping twice after swit-

ching on

Transmitter mode: pupil

orange LED ﬂ ashes twice 2x beeping twice after

switching on

Transmitter mode: teacher

orange LED ﬂ ashes three

times

beeping three times after

switching on

Bad receiving quality of the receiver

orange LED ﬂ ashes four

times

beeping four times after

switching on

Bad receiving quality of the downlink channel

orange LED ﬂ ashes ﬁ ve

times

beeping ﬁ ve times after

switching on

Transmitter battery empty. Hit the battery warning

threshold, 4.5 V as standard, set in the menu „TX“ of

the optional Smart-Box, page 114

First select the transmitter mode „normal“, „teacher“ or

„pupil“ by the transmitter mode switch on the left top side

of the transmitter:

The transmitter is delivered in the mode „normal“. For

normal operation you have to change nothing. In order

to select the teacher or pupil mode, read the chapter

„Trainer model“ on page 127.

121

Program description: Telemetry menu

wish to use the RX CURVE option - then two curves

must be set:

RX CURVE

TYPE : A

CURVE1 CH : 02

TYPE : A

CURVE2 CH : 05

TYPE : B

CURVE3 CH : 04

5CH FUNCTION:SERVO

If you ignored this, the left and right ailerons would

exhibit different control characteristics.

The RX CURVE function can be used to manage the

control characteristics for up to three servos:

CURVE 1, 2 or 3 CH•

Select the desired control channel (INPUT CH) for

the ﬁ rst servo.

The following setting in TYPE only affects the chan-

nel you select at this point.

TYPE

Select the servo curve:

A: EXPO = -100% and DUAL RATE = 125%

The servo responds slowly to stick movements

around the neutral position, but the curve becomes

steeper with increasing control travel.

B: Linear setting

The servo follows the stick movement with a linear

response.

C: EXPO = +100% and DUAL RATE = 70%

The servo responds slowly to stick movements

around the neutral position, but the curve becomes

steeper with increasing control travel.

Note:

The control characteristics programmed at this point

also affect mapped receiver outputs.

RX SERVO TEST

ALL–MIN : 1000sec

ALL–MAX : 2000sec

ALARM VOLT : 3.8V

TEST : STOP

ALARM TEMP–:–10°C

ALARM TEMP+: 70°C

CH OUTPUT TYPE:ONCE

Value Explanation Possible settings

ALL-MAX Servo travel on

the “+” side for all

servo outputs in

the servo test

1500 … 2000 μs

ALL-MIN Servo travel on

the “-” side for all

servo outputs in

the servo test

1500 … 1000 μs

TEST Test procedure START / STOP

ALARM

VOLT

Alarm limit for the

receiver low-

voltage warning

3,0 … 6,0 V

Default setting:

3,8 V

ALARM

TEMP+

Alarm limit for

excessive receiver

temperature

50 … 80 °C

Default setting:

70 °C

ALARM

TEMP–

Alarm limit for

excessively

low receiver

temperature

-20 … +10 °C

Default setting:

-10 °C

CH OUTPUT

TYPE

Channel sequence ONCE, SAME,

SUMI, SUMO

ALL MAX (maximum servo travel)

In this line you can set the maximum servo travel for the

servo test on the plus side of control travel.

2000 μs corresponds to full travel, 1500 μs corresponds

to the neutral position.

ALL MIN (minimum servo travel)

In this line you can set the maximum servo travel for the

servo test on the minus side of control travel.

1000 μs corresponds to full travel, 1500 μs corresponds

to the neutral position.

TEST

In this line you can start and stop the receiver’s integral

servo test.

Press the

INC+DEC button to activate the input ﬁ eld:

RX SERVO TEST

ALL–MIN : 1000sec

ALL–MAX : 2000sec

ALARM VOLT : 3.8V

ALARM TEMP–:–10°C

ALARM TEMP+: 70°C

CH OUTPUT TYPE:ONCE

TEST : STOP

Now select START with one of the arrow buttons of the

right-hand four-way button:

RX SERVO TEST

ALL–MIN : 1000sec

ALL–MAX : 2000sec

ALARM VOLT : 3.8V

ALARM TEMP–:–10°C

ALARM TEMP+: 70°C

CH OUTPUT TYPE:ONCE

TEST : START

Press the INC+DEC button to start the test-run. The

input ﬁ eld now reverts from highlighted to “normal”:

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