Graupner Hendheld RC 2.4 GHz No. of channels: 5 33110 User Manual

92

Preliminary notes regarding the GR-12 receiver

The 

mx-10 HoTT radio control set includes a GR-12 

2.4 GHz bi-directional receiver which is suitable for 
connection to a maximum of six servos.
In order to create a connection to the transmitter, the 
Graupner HoTT receiver must fi rst be “bound” to “its” 
model memory in “its” Graupner HoTT transmitter; this 
procedure is known as “binding”. However, binding is 
only necessary once for each receiver / model memory 
combination (see pages 106 or 109), and has already 
been carried out at the factory using the components 
supplied in the set. You therefore only need to carry out 
the “binding” process with additional receivers, or if you 
switch to a different model memory. The procedure can 
also be repeated whenever you wish - for instance, if 
you change the transmitter.
For this reason, if you connect the GR-12 HoTT receiver 
supplied in the set to a power supply and switch it on, 
the integral LED briefl y lights up green, and then goes 
out again, assuming that “its” transmitter is not in range, 
or is switched off. If a connection is made, the LED 
glows a constant green.

Receiver voltage display
Once a telemetry connection exists, the actual voltage 
of the receiver power supply is displayed on the right-
hand side of the transmitter screen.

Temperature warning
If the temperature of the receiver falls below a limit value 
set on the receiver (the default is -10°C), or exceeds 
the upper warning threshold, which is also set on the 
receiver (the default is +70°C), the transmitter generates 
a warning in the form of steady beeps at intervals of 
about one second.

Servo connections and polarity
The servo sockets of Graupner HoTT receivers are 
numbered. The connector system is polarised: look for 
the small chamfers when inserting the connectors, and 
on no account force the plugs into the sockets.
The power supply is through-connected via all the num-
bered sockets. If there is no vacant servo socket, it is 
also possible to connect the power supply via a Y-lead, 
Order No. 3936.11, in parallel with a servo.
Do not connect the battery to these sockets with 
reversed polarity, as this is likely to ruin the receiver 
and any devices connected to it.
The function of each individual channel is determined by 
the transmitter you are using, rather than by the receiver. 
The throttle servo socket is defi ned by the radio control 
system, and may differ according to the make and type. 
For example, in the case of Graupner radio control 
systems the throttle function is assigned to channel 1 for 
fi xed-wing models, and channel 6 for helicopters.

Servo socket 5: “SERVO” or “SENSOR”
The servo socket 5, which is marked with an additional 
“T” …

Servo 
sensor

OR

… can be used not only to update the receiver by con-
necting the adapter lead, Order No. 7168.6A, but also to 
connect a telemetry sensor.
However, to ensure that the receiver correctly detects 
the device connected to this socket, servo socket 5 
MUST be reset from “SERVO” to “SENSOR” and vice 
versa to suit the device. This is carried out in the “Te-
lemetry” menu on the “RX CURVE” page of the “SET-
TING & DATA VIEW” sub-menu. See the section starting 
on page 120  for more details:

On this menu page locate the “>” symbol at the left-hand 
edge of the screen, use the 

 or 

 button to move 

it to the bottom line, and then press the 

 button 

simultanously:

Now select the alternative “SENSOR” setting using one 
of the 

 or 

 buttons: