Manual Multiplex Royal SX9 (page 7 of 113) (English)

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Manual

2. Introduction

We are delighted that you have decided to purchase

the MULTIPLEX ROYAL SX radio control system.

The ROYAL SX is the result of a consistent programme

of development through the ROYAL series. The new

ROYAL SX retains many familiar and proven features

from the ROYALevo in combination with new features

suggested and requested by our large circle of users.

Transmission

M-LINK is a transmission system designed by

MULTIPLEX. It operates on the 2.4 GHz ISM band,

and exploits modern FHSS technology (FHSS = Fre-

quency Hopping Spread Spectrum).

Automatic RF channel management:

With this system it is no longer necessary for the op-

erator to select the RF channel manually (plug-in crys-

tals, Synthesizer). 2.4 GHz Spread Spectrum systems

automatically divide up the frequency spectrum, and

this eliminates the need for conventional frequency

monitoring. Same-channel interference (as is possible

on the 35, 40 … MHz band) is virtually impossible.

The first time the system is used you just have to

carry out a simple binding procedure to link the trans-

mitter to the receiver. From this moment on the re-

ceiver only responds to the signals from your specific

transmitter.

FHSS technology:

The transmitter and receiver jump from channel to

channel every few milliseconds, maintaining the same

rhythm; the data is transmitted during a fraction of this

period. The resultant brief period of channel occupa-

tion minimises signal conflicts, and suppresses inter-

ference. Even if data packets are lost on particular

channels, the constant high-speed hopping to the next

channel makes any interruptions unnoticeable to the

pilot.

Good data security / transmission security:

The enormous bandwidth available on 2.4 GHz makes

it possible to transmit much greater quantities of data

than is possible, for example on the 35 MHz band

(bandwidth on 2.4 GHz = 83.5 MHz; on 35 MHz =

1 MHz). Digital modulation in conjunction with sophis-

ticated error-checking in the receiver guarantee out-

standing data quality.

Good resistance to interference:

Typical interference sources in the model, such as

electric motors, and electronic devices such as speed

controllers, petrol engine ignition systems etc., have

an interference spectrum whose maximum frequency

is significantly below the 2.4 GHz range. It is virtually

impossible for 2.4 GHz systems to suffer interference

from such sources, and this provides a further im-

provement in security.

Fast, accurate transmission:

MULTIPLEX M-LINK is a digital transmission system

offering a maximum of sixteen servo channels with a

resolution of 12 bits (3872 steps). Background noise

has no effect on servo signal accuracy right up to the

limits of range. Resolution, centring precision and with

it general accuracy of control are at a con-stant high

level up to the effective limits of range. M-LINK’s digi-

tal encoding allows both HOLD and FAIL-SAFE to op-

erate very accurately. The standard servo pulse rate

of 21 ms (16-channel mode) can be reduced to 14 ms

(12-channel mode - Fast Response) in the case of the

ROYALevo, ROYAL SX and ROYAL SX M-LINK

transmitter types.

Feedback capability / Telemetry:

The 2.4 GHz ISM band offers the possibility of trans-

mitting data from the model back to the transmitter. If

you use a telemetry-capable receiver, the actual volt-

age of the receiver power supply is displayed on the

transmitter’s integral screen. If the voltage falls below

the set minimum value, an audible signal warns you

that the battery is almost flat. It is also possible to

have additional telemetry data from the model dis-

played on the screen, provided that appropriate sen-

sors are installed in the model; these parameters in-

clude motor current, battery voltage, temperature, …).

Short transmitter aerial:

The short 2.4 GHz transmitter aerial is robust and

easy to handle, and it does not impinge on the pilot’s

field of vision.

Operation

 Digital trim system

easily accessible cruciform trim buttons, trims spe-

cific to each flight phase, clearly arranged graphic

on-screen trim display, audible support, variable

trim increments

 Voltage display and battery monitor with variable

warning threshold (battery voltage) and audible

alarm

 Battery management system

Transmitter battery monitor with display of residual

charge in mAh, plus calculated display of remain-

ing operating time in hours

 Servo monitor

with graphic or numerical display, for checking

model settings

 Code lock PIN (4-digit) for securing the transmitter

against unauthorised data access

Hardware

 Modern, ergonomically efficient case design with

ultra-precise, individually variable, swivelling ball-

raced stick units for use hand-held or in a tray

 Graphics-capable folding screen (132 x 64 pixels)

with variable contrast

 Modern FLASH processor technology; simple up-

date via the Internet when new software versions

become available

 MULTIPLEX multi-function socket fitted as stan-

dard: acts as charge socket, Trainer mode inter-

face, PC interface (PC update, data back-up, flight

simulator)

 Selective Trainer mode operations

facilities provided as standard; unique Quick-

Select control assignment

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Multiplex Royal SX9 Manual

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