GRAUPNER mx-16 HOTT, Programming Manual

Page: 30 / 180

30 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 required
by the approval regulations - reduces this number
considerably. Generally, however, it will always be pos-
sible 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 14. If you do not do this, the
battery will soon fall below the
pre-set threshold voltage, and
you will see and hear a warn-
ing signal to remind you to
recharge it.
Switching the transmitter on
When you switch the transmitter on, the following display
appears in the centre of the transmitter screen for about
two seconds:
RF ON/OFF?
OFF ON
Within this period you can switch off the RF signal if
required by moving the black fi eld to the right using the
c
or
f
arrows of the right-hand touch-key; when you
do this, ON should appear normal, and OFF in inverse
form (black background).
RF ON/OFF?
ON OFF
You can now switch the RF module off by briefl y press-
ing the central
SET button of the right-hand touch-key.
Until this point the central LED glowed blue, but it now
changes to red, and at the same time the screen switch-
es to the transmitter’s base display:
#01
0:33h
stop
flt 0:00
0:00
0.0V
50% 5.2V HoTT
M
The symbol combination means that the currently
active model memory is already “bound” to a
Graupner
HoTT receiver, but there is currently no connection with
this receiver. (In our example we - of course - switched
off the RF signal!)
In contrast, if you switch the transmitter on without
switching off the RF signal, the central LED glows an
intense blue, and the symbolic transmitter mast fl ashes.
At the same time the transmitter emits an audible warn-
ing until a connection is made with the corresponding
receiver. Once this connection exists, a fi eld strength
indicator appears instead of the “x” at the base of the
symbolic aerial, for example
, and the visual and
audible warnings cease.
batter y
needs
charging
Using the transmitter for the fi rst time
Preliminary notes regarding the
mx-16
HoTT transmitter
For more information please visit our Internet site at www.graupner.de
At the right of the same line a display in the same format
appears when a telemetry connection is made, showing
the strength of the telemetry signal picked up from the
receiver (>
M ) together with the actual voltage of the
receiver power supply.
However, if the symbol combination
appears, and
the central LED glows a constant red, the currently ac-
tive model memory is not “bound” to any receiver.
Low-voltage warning
If the transmitter voltage falls below a particular value,
a visual and audible low-voltage warning is generated.
The default value is 4.7 V, but this can be varied in the
“
General Settings ” menu (page 114).
Firmware update
Firmware updates for the transmitter are carried out
at the owner’s discretion using the fi ve-pin mini-USB
port on the back of the transmitter, in conjunction with
a PC running Windows XP, Vista or 7.
For this reason
it is essential to check the state of charge of your
transmitter battery before every update. If you are
not sure, recharge the battery fi rst. It is important
to create a back-up of all occupied model memories
beforehand, so that you can restore them if neces-
sary.
The latest software and information can be found in the
Download section for the corresponding product at www.
graupner.de.
Note:
Once you have registered your transmitter at http://
graupner.de/de/service/produktregistrierung you will
automatically be informed of new updates by e-mail as
they become available.