Manual Multiplex RX-7-DR M-LINK (page 9 of 32) (English, German, French, Italian, Spanish)

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Operating Instructions for RX-7-DR M-LINK /

RX-9-DR M-LINK 2.4 GHz receivers

MULTIPLEX Modellsport GmbH & Co.KG • Westliche Gewerbestraße 1 • D-75015 Bretten (Gölshausen) • www.multiplex-rc.de Page 1/6

Instructions for RX-7/9-DR M-LINK 2.4 GHz receivers # 985 5319 (10-02-24/MIWA) • Errors and omissions excepted! •

MULTIPLEX

!These operating instructions are an integral part

of the product, and contain important information

and safety notes. Please store them in a safe place,

where you can find them at any time, and pass

them on to the new owner if you sell the receiver.

1. SPECIFICATION

RX-7-DR M-LINK RX-9-DR M-LINK

Order No. # 5 5811 # 5 5812

Reception system

2.4 GHz FHSS M-LINK

Frequency Hopping Spread Spectrum

MULTIPLEX-LINK

Servo channel count 7 9

Servo frame rate Fast Response: 14 ms

Standard: 21 ms

Signal resolution 12-bit, 3872 steps

Current drain Approx. 60 mA (excl. servos)

Aerial length Total: approx. 20 cm (2 x),

of which feed cable approx. 17 cm and

active aerial section approx. 3 cm

Operating voltage 3.5 V … 9.0 V

Î 4 - 6 NiCd / NiMH (NiXX) cells

Î 2S LiPo / LiIo

Operating

temperature range - 20°C … + 55°C

Weight 19 g

Dimensions Approx. 49.0 x 34.0 x 11.5 mm

2. SPECIAL FEATURES

x High-quality 7-channel / 9-channel receivers assembled

using the latest SMT methods, exploiting MULTIPLEX

2.4 GHz M-LINK technology, suitable for all types of model.

x Dual receivers:

Each receiver features two complete reception circuits

working in parallel (receiver diversity).

This ensures excellent reception quality by minimising

directional effects.

x Supplementary signal pre-amplification:

For highest possible sensitivity.

x In-line connector arrangement:

Ideal for models with limited internal space.

x HOLD / FAIL-SAFE function.

x Integral SET button and LED:

For binding, FAIL-SAFE programming, RESET and

displaying operating status information.

x Telemetry / feedback channel capability:

Receiver battery voltage and connection quality

= standard features.

Integral sensor interface for connecting external sensor

modules.

x Prepared for two-receiver operation:

Diversity lead (# 8 5070) required.

x Integral error counter / data logger:

For voltage and signal errors.

x Compatible with the MULTImate (# 8 2094).

x Integral PC interface:

Carry out updates and change settings using the

RX DataManager PC program.

3. SAFETY NOTES

!Please read the instructions before using the receiver.

!Use the receiver only for the intended applications

(Î 4.).

!Ensure the power supply is of adequate capacity (Î 6.).

!Observe the installation notes (Î 18.).

!Carry out regular range checks (Î 13.).

4. APPLICATIONS

The RX-7-DR M-LINK and RX-9-DR M-LINK 2.4 GHz receivers

(abbreviated to RX-7/9-DR M-LINK in this document) are radio

control receivers intended exclusively for use in model sport. It is

prohibited to employ them for other purposes such as full-size

(people-carrying) vehicles or industrial installations.

5. COMPATIBILITY

RX-7/9-DR M-LINK 2.4 GHz receivers can only be operated in

conjunction with transmitters which utilise MULTIPLEX M-LINK

transmission technology.

These are as follows (correct as of February 2010):

xROYALpro 7,9 and 16 M-LINK.

xROYALevo or pro 7,9 and 12 with firmware version V3.xx

and the HFM4 M-LINK 2.4 GHz RF module*.

xPROFImc 3010,3030 and 4000 with the HFM3 M-LINK

2.4 GHz RF module*.

xCOCKPIT SX M-LINK.

xMULTIPLEX transmitters with the HFMx M-LINK 2.4 GHz

RF module.

!*Note:

Unless stated otherwise, when this document refers to the

transmitter types ROYALevo,ROYALpro, and PROFImc 3010,

3030 and 4000, the terms refer to the 2.4 GHz M-LINK versions.

6. POWER SUPPLY

RX-7/9-DR M-LINK receivers work within a broad range of vol-

tages from 3.5 V … 9.0 V, i.e. they can be used with receiver

batteries consisting of four to six NiXX cells or 2S LiPo / 2S LiIo.

! Note: if you intend to use a five-cell or six-cell NiXX battery,

or a 2S LiPo or 2S LiIo pack, it is essential to check that all the

servos, gyros and other components connected to the system

are approved for use with this higher operating voltage.

!Note: ensure that the power supply is adequate

A power supply system in good condition and of adequate capa-

city for the specific application plays an indispensable role in the

safe operation of any model:

x Use only high-quality receiver batteries of adequate capacity.

Balance and maintain them carefully, and charge them fully.

x Ensure that all cables are of adequate conductor cross-

section. Keep all wiring as short as possible, and use the

absolute minimum of plug / socket connections.

x Use high-quality switch harnesses exclusively.

x Brief collapses in the power supply voltage (lasting a few

milli-seconds) have no adverse effect on the receiver. Longer

voltage collapses to below 3.5 V may cause a receiver reset,

resulting in a brief interruption in reception. This may be due

to a receiver battery which is almost flat, too weak or

defective, cables of inadequate cross-section, poor-quality

connectors or an overloaded or defective BEC system.

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