Graupner GmbH & Co. KG MC-20 用户手册
42
Commissioning the transmitter
Preliminary remarks
The Graupner HoTT system theoretically permits
simultaneous operation of more than 200 models.
However, because of the interspersed radio-
frequency utilization permitted by certifi cation for the
2.4 GHz ISM band, this number is signifi cantly lower
in practical application. Nevertheless, in general
more models can be operated simultaneously in the
2.4 GHz band than would be the case in conventional
35 or 40 MHz frequency bands. The real limiting
factor is – as often before – is still likely to be the
size of available operating space (i.e. airspace for
aircraft). Alone the fact that it is no longer necessary
to coordinate transmitting frequencies with other
pilots in the vicinity (which is sometimes quite diffi cult
in broken landscapes, such as on hillside slopes)
represents an enormous boost for remote control
operating security.
simultaneous operation of more than 200 models.
However, because of the interspersed radio-
frequency utilization permitted by certifi cation for the
2.4 GHz ISM band, this number is signifi cantly lower
in practical application. Nevertheless, in general
more models can be operated simultaneously in the
2.4 GHz band than would be the case in conventional
35 or 40 MHz frequency bands. The real limiting
factor is – as often before – is still likely to be the
size of available operating space (i.e. airspace for
aircraft). Alone the fact that it is no longer necessary
to coordinate transmitting frequencies with other
pilots in the vicinity (which is sometimes quite diffi cult
in broken landscapes, such as on hillside slopes)
represents an enormous boost for remote control
operating security.
Battery charged?
Since the transmitter is delivered with an empty (not
charged) battery, the battery must fi rst be charged
according to the charging instructions on page 16.
Otherwise a warning tone will be sounded and an
appropriate message will be blended into the basic
display if the low voltage threshold set in the
"Battery warning" line of the
»General basic settings« menu
(see page 260) is underrun.
Since the transmitter is delivered with an empty (not
charged) battery, the battery must fi rst be charged
according to the charging instructions on page 16.
Otherwise a warning tone will be sounded and an
appropriate message will be blended into the basic
display if the low voltage threshold set in the
"Battery warning" line of the
»General basic settings« menu
(see page 260) is underrun.
Transmitter startup
After being switched on, the message shown below
will appear in the transmitter's screen for about two
seconds.
will appear in the transmitter's screen for about two
seconds.
OFF
ON
Please select
RF on/off?
Within this brief period there is an opportunity to switch
RF transmission off by using the
RF transmission off by using the
c or f key of the
right touch pad to shift the position of the fi eld shown
in inverse video to the right so that ON is in standard
video and
in inverse video to the right so that ON is in standard
video and
OFF
is presented in inverse video.
ON
Please select
RF on/off?
OFF
Now switch the RF module off by tapping on the
center
center
SET
key of the right touch pad.
The telemetry display just below the antenna socket
will then briefl y show the message …
will then briefl y show the message …
CAN‘T
RECEIVE
DATA
… and in parallel to this, the transmitter's basic
display will appear similar to that shown below:
display will appear similar to that shown below:
#01
0:00h
Stop watch
Flight tim
K78
0:00.0
4.1V
0:00.0
0
0
0
0
00:00h
M
V
The symbol combination means that the currently
active model memory has already "bonded " with a
active model memory has already "bonded " with a
Batt. must
be re-
charged!!
be re-
charged!!
Commissioning the transmitter
Preliminary remarks about the
mc-20
HoTT transmitter
Graupner-HoTT receiver but there is no connection
to that receiver at the moment. (In this example,
RF transmission has been switched off.)
If, however, the transmitter is switched on without
switching RF transmission off, the symbolic antenna
mast will blink. At the same time, an acoustic warning
will sound until a connection is established with the
respective receiver. As soon as the connection is
established, the "X" at the base of the symbolic antenna
will be replace with a fi eld strength indicator, for
example
to that receiver at the moment. (In this example,
RF transmission has been switched off.)
If, however, the transmitter is switched on without
switching RF transmission off, the symbolic antenna
mast will blink. At the same time, an acoustic warning
will sound until a connection is established with the
respective receiver. As soon as the connection is
established, the "X" at the base of the symbolic antenna
will be replace with a fi eld strength indicator, for
example
, and the visual and acoustic warnings will
cease.
If a telemetry connection has also been established
for the incoming signal, that is output by the receiver
in the model, then the right side of this same screen
line will display a similar indication of signal strength
for this reception of the receiver's transmitted signal
(M
If a telemetry connection has also been established
for the incoming signal, that is output by the receiver
in the model, then the right side of this same screen
line will display a similar indication of signal strength
for this reception of the receiver's transmitted signal
(M
) as well as the current voltage of the receiver's
power supply.
On the other hand, if the symbol combination
On the other hand, if the symbol combination
6
appears in in the display and the front display shows
the message "Can't receive data" then the currently
active model memory is not "bound" to any receiver
at the moment.
the message "Can't receive data" then the currently
active model memory is not "bound" to any receiver
at the moment.
Under-voltage warning
If the transmitter's voltage drops below a certain
value set in the »General basic settings« menu
(page 260), 4.7 V by default, there will be visual and
acoustic under-voltage warnings issued.
If the transmitter's voltage drops below a certain
value set in the »General basic settings« menu
(page 260), 4.7 V by default, there will be visual and
acoustic under-voltage warnings issued.
Important notices:
The transmitter in the set is already preset,
•
as delivered, with default values which are
correct for operation in most European
countries (except France).
If the remote control system is to be operated
in France then the transmitter's "Region"
setting MUST be changed over to "FRANCE"
mode, see page 261. IN NO CASE may the
correct for operation in most European
countries (except France).
If the remote control system is to be operated
in France then the transmitter's "Region"
setting MUST be changed over to "FRANCE"
mode, see page 261. IN NO CASE may the