HFM3-SYNTH RF module operating instructions
MULTIPLEX Modellsport GmbH & Co.KG • Neuer Weg 2 • D-75223 Niefern-Öschelbronn • www.multiplex-rc.de
HF
M
3
-SY
NTH
RF
module in
struction
s # 8
2
551
1
(05
-0
7
-2
2
/ CHH
O
)
Erro
rs and
omission
s
exce
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ted
.
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MULTIP
LEX
!
These operating instructions are an integral part of the
product. They contain important information and safety
notes, and should therefore be kept in a safe place at all
times. Be sure to pass them on to the new owner if you ever
dispose of the product.
1. S
PECIFICATION
HFM3-SYNTH
Synthesizer RF module
# 4 5675
# 4 5676
Frequency range
35 MHz
(A and B band)
40 / 41 MHz
Current drain
approx. 160 mA
Temperature range
15
q
C ... + 55
q
C
Dimensions (L x W x H)
approx. 68 x 44 x 23 mm
Weight
approx. 40 g
2. S
AFETY
N
OTES
!
Read the instructions before using the module for the first
time
!
When a transmitter fitted with the HFM3-SYNTH RF module
is in use, keep any mobile radio telephones (mobiles, cell
phones) at least 2 m away from the transmitter. If you neglect
this, we cannot guarantee problem-free operation under all
circumstances, due to the high power of mobile phone trans-
mitters.
!
Do not carry out any technical modifications to the RF mod-
ule, and do not change any settings on it.
!
When the RF module is not installed in a transmitter, protect
it from mechanical load (vibration, shock, distortion etc.) and
damp.
3. S
PECIFICATIONS
x
The HFM3-SYNTH Synthesizer RF modules
# 4 5675
+
# 4 5676
support FM / PPM modulation exclusively
(PCM is not possible).
x
The HFM3-SYNTH Synthesizer RF modules
# 4 5675
+
# 4 5676
are approved for the following MULTIPLEX
transmitters:
PROFI mc 3010, PROFI mc 3030 and PROFI mc 4000.
x
The Channel-Check modules
# 7 5164
+
# 7 5165
cannot be
used with these modules.
4. L
EGAL
N
OTE
This module may only be set to the frequencies /
transmission channels which are approved for the country
in which it is used, and operated on those frequencies.
For more information on this please refer to the CE information
sheet (R&TTE Directive) which is supplied with all our
transmitting equipment, or the frequency table in the current
MULTIPLEX main catalogue. Alternatively contact the
appropriate authority (frequency administration office) of the
country in which you live.
5. CE CONFORMITY DECLARATION
MULTIPLEX Modellsport GmbH & Co. KG hereby declares that
these devices satisfy the requirements of the following har-
monised directives of the European Union (EU):
Measures for the efficient use of the radio frequency spectrum
EN300 220.
Protection requirements concerning electro-magnetic compati-
bility
EN301 489.
6. S
ETTING THE
C
HANNEL
The channel is selected using two rotary switches. The desired
channel is set using a two-digit number combination (Channel
Code). The method of converting your selected channel to the
Channel Code to be entered (00 to 99) is shown in the attached
table. The left-hand rotary switch defines the “tens” digit (x 10),
the right-hand rotary switch the “units” digit (x 1). The rotary
switches can be adjusted using a slot-head screwdriver of the
appropriate size. Please be careful when doing this!
Example:
Channel 183 (Frequency 35.830 MHz) is to be set:
1. Switch off the transmitter
2. Reference to the frequency table shows that the Channel
Code for this frequency is “03”.
3. Set the left-hand rotary switch to the number 0.
4. Set the right-hand rotary switch to the number 3.
5. Switch the transmitter on.
after a brief initialisation period the transmitter operates on
the channel you have set. The status LED on the module
(yellow LED) confirms this by single flashing (
Î
7.
).
Caution:
Before you switch the transmitter on, ensure that the code
switches really are set correctly, i.e. to the correct channel,
otherwise you could accidentally transmit on a different channel,
on which another transmitter might already be operating.
Provided that the module socket in the transmitter is a six-pin
type, the red / green LED (next to the ON/OFF switch on PROFI
mc transmitters) now indicates the operating mode, in the same
way as a crystal module:
LED red = no RF signal transmission
LED green = RF signal transmission ON, transmitter ready for
use.
Note:
Turning either of the rotary switches when the transmitter is
already on has absolutely no effect on the set channel. Chang-
ing the channel only takes effect when the transmitter is
switched off, then on again.
Caution:
PROFI mc series transmitters feature a delay time of about two
seconds after the switch is moved to OFF. During this period
the transmitter saves (stores) its data. You
must
allow this time
to elapse before you switch the transmitter on again, otherwise
it is possible that the frequency switch will not take place.
7. C
HECKING THE
F
LASHING
F
UNCTION
C
ODES
The module indicates its current status by means of a flashing
code using the yellow LED. The following states are possible:
Continuous light: RF switched off!
Possible feasons:
x
Transmission mode is set to “PCM” (the
module can only be operated in PPM
mode
Î
3.
)
x
A cable is connected to the transmitter’s
multifunction socket (this blocks RF
transmission)
x
Fault in the transmitter or module
Single repeated flash:
RF signal transmitted!
Transmitter ready for use
Double repeated flash:
Invalid channel set!
No RF signal transmitted
Triple repeated flash:
Fault!
No RF signal transmitted
