Operating Instructions
HFMG3 M-LINK 2.4 GHz RF Module
Page 12
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Tip
: if the RF module is a tight fit in the RF module recess,
the best method of removing it is to slip your fingernails into
the space between the retaining clips and the RF module
well, then squeeze the retaining clips together, and finally
push the RF module up and out.
x
Install the 35, 40, … MHz RF module.
x
Screw in the 35, 40, … MHz aerial.
Reverse the procedure to convert from 35, 40, … MHz back to
2.4 GHz M-LINK technology.
!
Note:
you must always remove the 35, 40, ... MHz trans-
mitter aerial (telescopic or short type) before operating the
2.4 GHz M-LINK system!
12. B
INDING PROCEDURE
The transmitter and receiver using 2.4 GHz M-LINK technology
must be “bound” to each other once before the system can be
used. This procedure is known as “binding”.
!
Note:
You will find general information on the subject of binding, and
on fault-finding and correction relating to the binding procedure,
in the operating instructions supplied with your MULTIPLEX
M-LINK receiver.
The binding procedure in detail:
1. Place the transmitter and receiver aerial(s) immediately
adjacent to each other.
2. Switch ON the transmitter with 2.4 GHz M-LINK technology
in Binding mode:
x
Locate the SET / LED button on the top of the
HFMG3
M-LINK 2.4 GHz RF module
, and hold it pressed in.
x
Switch the transmitter ON.
x
Release the SET / LED button as soon as the LED on the
RF module starts flashing at a high rate.
3. Switch the M-LINK receiver ON in binding mode
(see the M-LINK receiver operating instructions):
=> The binding process is now in progress.
4. Once the transmitter and receiver have detected each other,
both units
automatically
switch over to regular transmit /
receive mode (Normal operations
Î
14.
):
=> The LED on the SET / LED button on the top of the
HFMG3 M-LINK 2.4 GHz RF module
flashes at
intervals of about two seconds.
!
Note:
the binding process usually only takes a few seconds.
13. R
ANGE CHECKING
Regular range checks are very important - even when using a
2.4 GHz system - in order to ensure reliable operation of the
radio control system, and to give you a chance to detect sources
of interference in good time. This applies in particular:
x
Before the use of new or changed components, or existing
components in a new or modified arrangement.
x
Before re-using radio control system components which were
previously involved in a crash or a hard landing.
x
If you have encountered problems on a previous flight.
Important:
x
Always ask a second person to help you with your range
check, so that one of you can secure and observe the model.
x
The range check should only be carried out if there are no
other transmitters switched on at the same time.
Preparations, carrying out the range check:
1. Select “range check” mode on the transmitter with 2.4 GHz
M-LINK technology:
x
Switch the transmitter ON.
x
Within four seconds of switching the transmitter ON, hold
the SET / LED button on the top of the
HFMG3 M-LINK
2.4 GHz RF module
pressed in until the LED on the
SET / LED button glows constantly.
2. Switch the M-LINK receiver ON.
3. Carry out the range check as described in the operating
instructions supplied with your M-LINK receiver.
4.
When you have completed the range check, switch OFF
the transmitter with M-LINK technology, and then ON
again, in order to switch back to normal transmit mode
with full range!
!
Note: after switching the transmitter OFF, wait a few
seconds before switching it back ON again!
!
Caution: selecting “Range check” mode reduces the
transmitter’s output power. The transmitter emits an
audible signal every ten seconds or so to warn you of
this.
Never attempt to fly a model with the transmitter set to
reduced output (range check mode)!
14. N
ORMAL OPERATIONS
This is the procedure for operating the transmitter with 2.4 GHz
M-LINK technology in normal transmit mode (normal
operations):
1. Switch the transmitter ON:
=> The LED on the SET / LED button on the top of the
HFMG3 M-LINK 2.4 GHz RF module
flashes at
intervals of about two seconds.
2. Switch the M-LINK receiver ON.
=> The M-LINK system is now ready for use.
This is the procedure for switching OFF the 2.4 GHz M-LINK RC
system:
1. Switch the M-LINK receiver OFF.
2. Switch the transmitter OFF.
15. F
EEDBACK CHANNEL
/ T
ELEMETRY
The 2.4 GHz ISM band provides a means of transmitting data
from the model to the transmitter. If you are using a telemetry-
capable M-LINK receiver, your Graupner/JR transmitter with 2.4
GHz M-LINK technology warns you when the receiver battery
voltage falls to a low level via the RF module’s integral buzzer.
For more information on this subject please refer to the opera-
ting instructions supplied with your telemetry-capable M-LINK
receiver.
If the MULTIPLEX Telemetry-Display (
# 4 5182
) is also used,
the screen shows the connection quality (LQI = Link Quality
Indication) as well as the voltage of the receiver power supply.
The Telemetry-Display can also show additional telemetry data.
Examples of this include current, voltage, altitude and speed
values - depending on the sensors connected to the system.
The Telemetry-Display is capable of displaying a maximum of
sixteen telemetry values.
Visual and audible warnings are generated by the Telemetry-
Display. The warning sounds are produced either through the
integral loudspeaker with volume control, or the earpiece, which
