Manual Multiplex RX-7-DR M-LINK (page 13 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 5/6

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

MULTIPLEX

11. MULTIMATE AND RX DATAMANAGER

PC PROGRAM

All MULTIPLEX M-LINK receivers are based on modern micro-

controllers (FLASH technology). In the case of most M-LINK

receiver types (see the operating instructions supplied with your

receiver) it is also possible to connect the unit to the MULTImate

(# 8 2094) and / or to a PC or notebook computer using the PC

connecting lead (# 8 5149); the PC program RX DataManager

can then be used.

The PC program RX DataManager is available as a free down-

load from the MULTIPLEX website (www.multiplex-rc.de). This

program or MULTImate opens up the following possibilities:

x Availability of expanded receiver options, such as freely

variable HOLD and FAIL-SAFE period, individual FAIL-SAFE

settings can be activated and adjusted channel by channel,

…

x Error counter / error memory read-out

The error count can be read out separately for signal errors

and operating voltage errors.

x Unrestricted sensor address assignment for the receiver

battery voltage and for connection quality (0 - 15).

x Receiver name assignment (max. 12 characters).

The RX DataManager program also allows:

x Firmware update.

12. INSTALLATION NOTES

x Protect your receiver from vibration, especially in models

in foam).

x Locate the receiver at least 150 mm away from electric mo-

tors, petrol engine ignition systems and any other electronic

components such as speed controllers for electric motors and

drive batteries. Do not route the aerials close to these compo-

nents.

x Install the receiver in the model in such a way that both

aerials are as far away as possible from electrically conduc-

tive materials, and are arranged at an included angle of 90°.

Locate the two aerial ends as far from each other as possible.

x If the model’s fuselage contains conductive material (e.g.

carbon fibre), the aerials must be installed in such a way that

the active part of the aerial (approximately the last 30 mm) is

located outside the model.

x Do not deploy the receiver aerials inside or on model com-

ponents which are laminated or reinforced with electrically

conductive materials (metal foil, carbon fibre, metallic paints

etc.), as they have a shielding effect.

x Never shorten or extend the aerials or their feed cables.

Never attempt to exchange the aerials yourself!

x Do not deploy the aerials parallel to servo leads, high-current

cables or electrically conductive parts (e.g. pushrods).

x Keep to the recommended installed arrangements (Î 18.,

sketches A - D)!

x High-current cables, e.g. those attached to the speed con-

troller, motor and flight battery, should be kept as short as

possible.

x If you are using a diode-based battery backer, always install a

PeakFilter (# 8 5180).

x Reception quality can be optimised by fitting a special ferrite

ring (# 8 5146) or suppressor filter lead (# 8 5057) in the speed

controller cable. It is also advisable to fit effective suppressors

to conventional (brushed) electric motors (not brushless types)

(e.g. use the suppressor set # 8 5020).

13. RANGE 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 enable you 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 If possible, carry out the range check when no other trans-

mitters are operating.

Carrying out the range check:

1. Select “range-check mode” on your transmitter (see the

operating instructions supplied with the transmitter or RF

module).

There must be visual contact between the transmitter and

receiver aerials (i.e. the model) during the range check.

Keep the transmitter and the model about one metre above

ground during the range check.

2. When checked with reduced transmitter power, the range of the

RX-7/9-DR M-LINK receiver must be 100 metres. You have

reached the range limit when the servos start to move jerkily.

If your transmitter features an automatic servo test facility,

we recommend that you activate it for one control function

(e.g. rudder). This sets up a steady movement of the servo,

and enables you to detect the limit of range clearly.

Important:

Carry out the first range check with the motor switched off.

Turn the model into all attitudes, and attempt to optimise

reception by changing the position of the two aerials.

For the second range check, run the motor at varying speeds

and check that the effective range is not significantly reduced.

If there is a marked reduction, locate and eliminate the cause

of the interference (caused by the motor, the arrangement of

the receiving system and power supply, vibration, etc.).

14. EXCHANGING THE AERIALS

The standard aerial feed cables attached to RX-7/9-DR M-LINK

receiver types are long enough for most applications.

If you require longer or shorter aerial feed cables, please contact

the MULTIPLEX Service Department or any MULTIPLEX Ser-

vice Centre, as they stock cables of different lengths, and will

gladly quote an individual price for modifying your receiver to

professional standards.

!Caution: never attempt to exchange the aerials yourself!

Changing the aerials to a professional standard requires

special tools as well as appropriate expertise. Ignoring this

warning may have an adverse effect on the receiver’s

reception quality.

!Caution: if the active part of the aerial (the final 30 mm)

should be damaged, the aerial must be replaced by the

MULTIPLEX Service Department or a MULTIPLEX Service

Centre; the same applies to damaged aerial feed cables.

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