Multiplex RX-7 SYNTH DS M-PCM Instructions page 8

These operating instructions are an integral part
of the product, and contain important information
and safety notes. Please keep them in a safe place
at all times, and be sure to pass them on to the new
owner if you ever dispose of the product.
1. S
PECIFICATION
RX-7-SYNTH DS 35MHz
A-band
M-PCM
Order No. # 5 5850
Servo channels
Current drain
Weight
Dimensions
RX-9-SYNTH DS 35MHz
A-band
M-PCM compact
Order No. # 5 5855
Servo channels
Current drain
Weight
Dimensions
35MHz
RX-9-SYNTH DS
M-PCM A-band
Order No.
# 5 5860
Servo channels
Current drain
Weight
Dimensions
RX-12-SYNTH DS 35MHz
M-PCM A-band
Order No. # 5 5865
Servo channels
Current drain
Weight
Dimensions
1)
41MHz band only approved for use in France.
Shared specification
Modulation
FM
MULTIPLEX Pulse Code Modulation
Reception system
(M-PCM), dual conversion
Available
RF channels / see table on page 6
frequencies
Sensitivity
approx. 2 µV
Servo signal rate
16 ms
Aerial length 900 mm
4.0 V ... 9.0 V
Operating voltage
Operating
- 20° C ... + 55° C
temperature range
MULTIPLEX Modellsport GmbH & Co.KG • Westliche Gewerbestraße 1 • D-75015 Bretten (Gölshausen) • www.multiplex-rc.de
Operating Instructions - RX-7/9/12-SYNTH DS M-PCM /
RX-9-SYNTH DS M-PCM compact receivers
35MHz 40/41MHz
B-band
# 5 5851
7
approx. 25 mA (excl. servos)
31 g
approx. 56.0 x 22.5 x 24.5 mm
35MHz 40/41MHz
B-band
# 5 5856
9
approx. 25 mA (excl. servos)
31 g
approx. 56.0 x 22.5 x 24.5 mm
35MHz 40/41MHz
B-band
# 5 5861
9
approx. 50 mA (excl. servos)
61 g
approx. 64.0 x 48.0 x 25.5 mm
35MHz 40/41MHz
B-band
# 5 5866
12
approx. 50 mA (excl. servos)
61 g
approx. 64.0 x 48.0 x 25.5 mm
4 - 6 NiCd / NiMH (NiXX) cells
2S LiPo / LiIo
2. S
PECIAL
•
Synthesizer receivers, requiring no plug-in crystals
•
Integral error counter
•
Receiver Diversity operation possible
•
Can be updated to new software versions via PC
•
Compatible with the MULTIPLEX MULTImate
1)
•
MULTIPLEX M6 connector system as battery socket on
RX-9/12-SYNTH DS M-PCM
# 5 5852
3. S
AFETY
Read the instructions before using the receiver for the
first time
Use the receiver for its intended application only (
Be sure to use a power supply of adequate capacity
( 7.)
1)
Read and observe the installation notes (
Carry out regular range checks (
# 5 5857
Keep strictly to the following sequence when switching
ON and OFF
First switch the transmitter ON, then switch the receiver ON.
First switch the receiver OFF, then switch the transmitter OFF.
4. A
PPLICATIONS
1) The RX-7/9/12-SYNTH DS M-PCM and RX-9-SYNTH DS M-PCM
compact receivers are radio control system components de-
signed exclusively for use in modelling applications. Their use in
# 5 5862
vehicles designed to carry persons and for industrial applications
is prohibited.
5. C
OMPATIBILITY
These receivers can only be operated in conjunction with
transmitters which exploit M-PCM transmission technology. As
of July 2008 these are the following:
1)
•
ROYALpro 7, 9 and 12
•
ROYALevo 7, 9 and 12, if they have been upgraded to soft-
# 5 5867
ware Version V2.xx as part of the Upgrade Action by the
MULTIPLEX Customer Service Department, and are fitted
with the HFM-S M-PCM/PPM RF module.
6. T
HE
Like all analogue systems, PPM contains a degree of back-
ground noise which becomes more significant with increasing
range. The result is that servos start to jitter even when the
distance between model and transmitter is only moderate. The
MULTIPLEX IPD system reduces servo jitter, but at the cost of
resolution and response speed. In practice, the receiver's in-
herent noise level restricts resolutions to around 500 increments
(steps).
MULTIPLEX-PCM (M-PCM) is a digital transmission system. It
uses a newly developed encoding process to transmit twelve
fast, equal-value servo channels with a resolution of 3872 steps
(12-bit). The background noise has no influence on the accuracy
of the servo signals right up to the effective limits of range.
Resolution, centring precision and therefore accuracy of control
remain at a constant high level right to the range limit, whereas
these parameters steadily deteriorate towards the range limit
with PPM and / or IPD. However, at the range limit reception
fails more abruptly and with considerably less warning than with
PPM. Digital encoding mean that both Hold mode and Fail-Safe
operate much more accurately and reliably than is possible with
PPM and IPD.
F
EATURES
N
OTES
M-PCM T
RANSMISSION
4.)
13.)
14.)
S
YSTEM
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