MULTIPLEX Cockpit Sx Channel Check Plus Owner's manual

Brand: MULTIPLEX

Model: Cockpit Sx Channel Check Plus

Type: Owner's manual

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Operating instructions

Channel-Check PLUS for the COCKPIT SX

MULTIPLEX Modellsport GmbH & Co.KG • Westliche Gewerbestraße 1 • D-75015 Bretten (Gölshausen) • www.multiplex-rc.de Page 1 / 2

Instructions Channel-Check-PLUS # 82 5575 (07-08-29/CHHO) • Errors and changes excepted! •



MULTIPLEX

! These operating instructions are an integral part of the

product. They contain important information and safety

notes, and must be stored in a safe place. Be sure to pass

them on to the new owner if you ever sell the product.

1. S

PECIFICATION

35 MHz

40/41 MHz

36 MHz

Order No.

# 4 5174

# 4 5175

# 4 5177

for frequency

band

35 MHz

A and B band

40 and 41

MHz band

36 MHz

band

Current drain

when scanning approx. 10 mA,

otherwise < 0.1 mA

Dimensions

L x W x H

approx. 44 x 30 x 15 mm

Weight

approx. 11 g

2. S

AFETY NOTES

! Read the instructions before using the module.

! Do not modify the module. Unauthorised work on the

module invalidates the transmitter’s operating approval.

If the settings of any components are changed, or if the unit is

damaged, send the module to your nearest MULTIPLEX Ser-

vice Centre for checking.

! Protect the module from mechanical stress (vibration,

shock, distortion) when stored. Protect it from damp, and

store it in a protective ESD bag designed for electronics.

! Always switch the transmitter off before opening the

case. Never carry out any work inside the transmitter

with the power turned on.

Disconnect the transmitter battery to be on the safe side.

3. ESD

NOTES

Electronic devices are sensitive to electrostatic dis-

charge. This module also contains components

which can be damaged in this way. The damage

can occur when charged components dissipate their

charge (potential imbalance), typically when the

components are touched. This can also shorten the compo-

nents’ effective life. The module is supplied in a conductive ESD

bag which provides effective protection from this risk.

It is important to observe the following safety measures when

handling modules which are subject to electrostatic damage:

• Earth yourself before fitting the module or removing it from

the transmitter. This can be done by touching a radiator or

similar earthed metal object with your hand.

• Open the transmitter (if necessary), and hold it by a large

area in order to allow any potential differences to dissipate.

• It should now be safe to remove the module from the con-

ductive ESD protective bag. Avoid touching the electronic

components or solder pads directly. Hold the module only

by the edges of the circuit board.

• When the module is out of the transmitter, store it in the

conductive ESD protective bag at all times. Never allow it to

contact ordinary, non ESD-suitable foam plastic, styrofoam

or other plastic material.

4. CE

CONFORMITY DECLARATION

MULTIPLEX

Modellsport

GmbH

Co.KG

hereby

declares

that

these

devices

satisfy

the

following

harmonised directives of the European Union (EU):

• Protection requirements concerning electromagnetic com-

patibility EN301 489

• Measures for the efficient use of the radio frequency spec-

trum EN300 220

Full text  www.multiplex-rc.de/Downloads/Produktinfo

5. F

EATURES

The Channel-Check PLUS module has two basic functions:

• Channel-Check

Automatic protection from channel clashes (two transmitters

on the same frequency) when you switch on the transmitter

• Manual scan

Signal strength display (showing channels in use) with man-

ual channel selection (3D digi-adjustor)

When you switch the transmitter on, the Channel-Check func-

tion automatically checks whether the set channel is free before

it allows the RF module to be activated. The transmitter only

starts transmitting if the set channel is found to be vacant (not

already in use); an RF signal is then transmitted. This represents

an important contribution to safety when flying model aircraft, as

it considerably reduces the risk of crashes due to channel

clashes.

Manual Scan mode allows the user to check the transmitter’s

frequency band. The signal strength is shown on the screen in

four stages in place of the usual trim display. The Channel-

Check PLUS module works like a normal radio control receiver.

No RF signal is radiated during scanning operations.

6. F

ITTING THE

HANNEL

-C

HECK

PLUS

MODULE

! Note: identical frequency band

The frequency band of the Channel-Check PLUS module

must be identical to that of the transmitter!

You will need to open the transmitter case in order to install the

Channel-Check PLUS module; the procedure is described in de-

tail in the COCKPIT SX operating instructions (undo the seven

TORX screws in the back of the transmitter).

! Read the ESD notes (



 3.) before proceeding.

The module is simply plugged into the main circuit board of the

COCKPIT SX.

Carefully fit the Channel-Check PLUS module in the transmitter,

then close the transmitter back and fit the screws again.

The Channel-Check PLUS module is now ready for use.

Contact pins for the

Channel-Check PLUS

module

Operating instructions

Channel-Check PLUS for the COCKPIT SX

MULTIPLEX Modellsport GmbH & Co.KG • Westliche Gewerbestraße 1 • D-75015 Bretten (Gölshausen) • www.multiplex-rc.de Page 2 / 2

Instructions Channel-Check-PLUS # 82 5575 (07-08-29/CHHO) • Errors and changes excepted! •



MULTIPLEX

7. T

HANNEL

-C

HECK FUNCTION

! Note: always extend the transmitter aerial fully before

you switch the transmitter on !

During the channel-checking procedure the transmitter aerial

acts as a receiver aerial. For this reason it must always be ex-

tended to its full length before you switch the transmitter on, oth-

erwise it could fail to detect a transmitter already operating in the

vicinity.

When you switch the transmitter on, the Channel-Check PLUS

module checks whether the set channel is free. During the

Channel-Check process no RF signal is transmitted (the blue RF

status LED glows constantly). If the set channel is in use, or is

suffering interference, no RF signal will be transmitted. This pre-

vents the danger of the transmitter affecting a model which is

already flying.

If the channel is in use, or if interference is detected, the trans-

mitter emits a quadruple warning sound.

A display similar to the following will appear on the screen:

The selected channel (74), operating on a frequency of 35.140

MHz, is in use or suffering interference. Both trim displays show

the strength of the unwanted signal:

no signal weak moderate strong very

measurable strong

You can now use the 3-D digi-adjustor to select a different

channel, and the module will display the signal strength on that

frequency.

If a weak signal is displayed:

If you are close to other modellers (< 10 m), mixed signals from

the other transmitters may generate an interference signal on

your channel, which the Channel-Check PLUS module in your

OCKPIT

SX detects as “channel in use or suffering interference”.

Radio control transmitters which are operating on an adjacent

channel (in our example channel 73 or 75) can also produce an

unwanted signal display (adjacent channel interference).

If this should happen, walk away from the other transmitters. If

the display now changes to “no signal measurable”, the problem

is an ICM (inter-channel modulation) problem or adjacent chan-

nel interference.

Switch the transmitter on again at a little distance from the other

pilots. You will need to switch off, then on again, to do this.

! Caution:

The Channel-Check PLUS function does not remove the re-

quirement for you to carry out frequency control and / or

check with the other pilots!

If your radio installation in the model is inefficient, if it is used in-

correctly, or if a fault occurs, it is still possible that a transmitter

fitted with a Channel-Check Plus module will switch on when the

selected channel is already in use by another transmitter.

8. T

HE MANUAL SCAN FUNCTION

Note: during the scanning process the transmitter does not radi-

ate an RF signal. The RF status LED glows constantly.

Starting a manual scan

To switch a COCKPIT SX transmitter with Channel-Check PLUS

module to scan mode, hold the 3-D digi-adjustor pressed in

while you switch the transmitter on.

The screen displays the frequency (e.g. 35.140 MHz), to which

the Synthesizer of your COCKPIT SX is set. The associated

channel number (74) flashes in the line below this.

Three different displays are now possible:

a. no Channel- b. no signal c. channel in use

Check PLUS measurable or interference

present (signal very

strong)

Manual scan

You can now use the 3-D digi-adjustor to select any of the chan-

nels available on your transmitter, and the module will display

the signal strength on that frequency.

Interpreting the screen displays

If no measurable signal is present on a particular channel (aerial

completely extended and held vertical) (see display b.), this

means the following: there is no radio control transmitter operat-

ing on this channel in a radius of around 300 m.

CAUTION !

The stated range of 300 m varies according to the terrain and

the geographical circumstances, and should only be viewed as

an approximation.

You can build up a “picture” of the actual conditions at your fly-

ing site by selecting the channel of a transmitter which is already

switched on, and walking to particular distinctive points within

the bounds of your field.

9. N

OTES REGARDING MANUAL SCAN MODE

Searching for channels / frequencies in use at a flying site

During the manual scan procedure keep about 10 m away from

other transmitters. This will avoid misleading displays caused by

interactions between transmitters in the immediate vicinity.

10. D

ISPOSAL

Electrical equipment marked with the crossed-out

waste bin must not be discarded in the normal do-

mestic waste. Such items must be taken to a suitable

specialist waste centre for proper disposal.

In EU countries (European Union) electrical devices

must not be discarded through the normal domestic

refuse system (WEEE - Waste of Electrical and Electronic

Equipment, directive 2002/96/EG). You can take your unwanted

items to a local authority collection centre or your nearest recy-

cling centre, where the personnel will dispose of your equipment

properly, and at no cost to you.

Strength of the received

signal (display left and right)



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MULTIPLEX Cockpit Sx Channel Check Plus Owner's manual

Brand: MULTIPLEX

Model: Cockpit Sx Channel Check Plus

Type: Owner's manual

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italiano: MULTIPLEX Cockpit Sx Channel Check Plus Manuale del proprietario
français: MULTIPLEX Cockpit Sx Channel Check Plus Le manuel du propriétaire
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Deutsch: MULTIPLEX Cockpit Sx Channel Check Plus Bedienungsanleitung

MULTIPLEX Cockpit Sx Channel Check Plus Owner's manual

MULTIPLEX Cockpit Sx Channel Check Plus Owner's manual

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