467082

Multiplex Cockpit MM Handleiding

44
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Instructions
2
Dear customer,
Dear fellow-modeller,
The COCKPIT
MM
: that’s the name of the new system from MULTIPLEX. We have used
this name before, on a transmitter which we introduced in 1985, but the new Cock-
pit is not comparable in any way with the earlier version. The new transmitter in-
corporates micro-processor technology, and it is this which provides its wide-
ranging facilities and operating convenience. The new system features many inter-
esting and useful innovations which modellers could hardly have imagined at the
time of the earlier Cockpit:
The COCKPIT
MM
’s primary features:
• 7 channels, PPM transmission
• 9 model memories with copy function
• Suitable for fixed-wing aircraft, helicopters and vehicles
• Simple programming based on a 3D digi-adjustor and 2-line
LCD screen with up to 11 symbols
• Digital trims with trim memory
• Programmable servo reverse, centre, and end-points (both directions) for all 7
channels (3-point curve)
• 9 mixers for fixed-wing model aircraft: combi-switch, aileron differential,
V-tail mixer, delta mixer, flaperon mixer, spoileron with aileron differential sup-
pression, 3 x elevator trim compensation for motor, control E (flap), and control
F (spoiler)
• 3 mixers for helicopters
• „MOTOR OFF“ switch as emergency motor stop
• Choice of 8 primary control configurations (stick modes)
• Switchable reduced travels (Dual Rates) for 3 channels
• Expo for 3 channels
• Stopwatch, operating hours timer
The name „Cockpit“ is also intended to reflect the aim which we kept in mind all the
time when developing this system:
„Just as in a ‘full-scale’ cockpit, the model pilot should be able
to reach and control all the essentials quickly and easily.“
And the „MM“? Quite simple: MM is two thousand in Roman numerals, and we use it
to show that the Cockpit is our contribution to the theme of the new millennium.
Please read right through these instructions carefully before you use your new RC
system for the first time. This will help you to get to know the COCKPIT MM’s fea-
tures quickly, so that you can exploit its many facilities to the full.
We hope you have many hours of fun and pleasure with your new system.
Yours the MULTIPLEX team
3
1. Contents
1. Contents ...................................................................................................................3
2. Safety ........................................................................................................................5
3. The C
OCKPIT
MM
transmitter ...................................................................................6
4. Switching on for the first time............................................................................7
4.1. Preparation...............................................................................................................7
4.1.1. Charging the transmitter battery.................................................................................................................7
4.1.2. Charging the receiver battery.........................................................................................................................7
4.1.3. Battery chargers and accessories.................................................................................................................8
4.1.4. Fitting the transmitter crystal..........................................................................................................................9
4.1.5. The transmitter sticks.............................................................................................................................................9
4.1.6. COCKPIT
MM
expansion facilities and re-adjustment.......................................................................10
4.2. What is supposed to happen?...........................................................................11
5. The operating philosophy................................................................................ 13
5.1. Introduction..........................................................................................................13
5.2. Screen and 3D digi-adjustor .............................................................................. 14
5.3. Example: selecting your language ...................................................................14
5.4. Digital trims and trim value memory...............................................................16
5.4.1. Digital trims.................................................................................................................................................................16
5.4.2. Trim display.................................................................................................................................................................17
5.4.3. Trim memory..............................................................................................................................................................17
5.4.4. Trim type (centre trim).......................................................................................................................................17
6. Model memories.................................................................................................. 18
6.1. Switching model memories...............................................................................18
6.2. Copying model memories..................................................................................19
7. General settings .................................................................................................. 19
7.1. Selecting the language .......................................................................................19
7.2. Battery alarm threshold ......................................................................................20
7.3. Operating hours ...................................................................................................20
8. Setting up a new model..................................................................................... 21
8.1. Preparing the model and receiving system ...................................................21
8.1.1. Preparing the model............................................................................................................................................21
8.1.2. Connecting the servos to the receiver..................................................................................................21
8.2. Preparing the model memory...........................................................................21
8.2.1. Selecting the model type / Erasing the model memory........................................................21
8.2.2. Selecting the transmitter configuration (stick mode)..............................................................22
8.2.3. The Throttle/Collective Pitch trim of the COCKPIT
MM
....................................................................23
8.3. Adjusting servos (direction of rotation, format, centre and travels).........24
4
8.3.1. Selecting the direction of rotation and servo signal format...............................................24
8.3.2. Adjusting the servo centre and end-points.....................................................................................25
8.4. Adjusting the transmitter controls ...................................................................26
8.4.1. Dual-Rates....................................................................................................................................................................26
8.4.2. Exponential (EXPO)...............................................................................................................................................27
8.5. Mixers for fixed-wing model aircraft................................................................28
8.5.1. Combi-Switch for coupled aileron and rudder..............................................................................28
8.5.2. V-TAIL for models with a V-tail....................................................................................................................28
8.5.3. DELTA mixer for flying wings and deltas............................................................................................29
8.5.4. Aileron differential for models with two aileron servos.........................................................30
8.5.5. Flaperon mixer for trimming the wing section.............................................................................31
8.5.6. Spoileron mixer: using ailerons as a landing aid..........................................................................32
8.5.7. Elevator compensation for throttle, flaps and spoilers...........................................................33
8.6. Helicopter mixers.................................................................................................34
8.6.1. Introduction...............................................................................................................................................................34
8.6.2. Preparations...............................................................................................................................................................35
8.6.3. Static tail rotor compensation.....................................................................................................................36
8.6.4. Auto-rotation............................................................................................................................................................37
8.6.5. Idle-up.............................................................................................................................................................................38
8.6.6. The starting procedure......................................................................................................................................39
8.6.7. Test flying.....................................................................................................................................................................39
9. Auxiliary functions..............................................................................................40
9.1. Stopwatch / MOTOR OFF switch.......................................................................40
9.2. Teacher/pupil mode ............................................................................................41
10. Channel-Check gives security when you switch on ...................................42
10.1. Installing Channel-Check....................................................................................42
10.2. Operating the transmitter with Channel-Check............................................43
10.3. What should I do if STOP appears and the LED flashes fast?......................43
10.4. How effective is Channel-Check?......................................................................44
11. Installing the receiving system in the model...............................................45
12. The system in use ........................................
Fehler! Textmarke nicht definiert.
12.1. Post Office regulations for the U.K....................................................................45
12.2. Range check...........................................................................................................46
12.3. Using the diagnosis lead.....................................................................................47
12.4. Care of the transmitter........................................................................................47
12.5. What should I do if I have queries or problems?............................................47
13. Accessories............................................................................................................48
5
2. Safety
Radio controlled models are not playthings!
Safety in RC modelling is of extreme importance, and you can make the greatest
contribution to it yourself, simply by handling and using your radio control system
and model carefully, responsibly and conscientiously.
• Check all electrical and mechanical connections in the model regularly.
• Check regularly that all control surfaces work smoothly, freely, and without slop
(disconnect the linkages to check this).
• Carry out regular range checks (see 12.2. Range testing).
• Check with other pilots and the site flight line director that your channel is not
already in use. The Channel-Check module (optional accessory - see 10. Chan-
nel-Check) provides an extra level of security.
• Before launching your model extend the transmitter aerial to its full length and
check that it is in good condition and firmly secured.
• Check that the transmitter is set to the correct model memory.
• Before every flight check all the working systems as follows:
Do all the control surfaces work in the correct „sense“ relative to the stick
movements? Are the control surface travels correct? Have you set the appropri-
ate mixers for the model, and have you adjusted them correctly?
• Are the transmitter and receiver battery adequately charged, and in good, well-
maintained condition?
• Use only genuine MULTIPLEX crystals, batteries and accessories.
• Read and observe the recommendations for any components of your receiving
system which are not covered by these operating instructions.
If you are not sure of any of these points, do not launch the model! Check every-
thing again in peace and quiet, and give yourself a chance to locate and remedy the
fault. If you still cannot eliminate the problem, ask your model shop or the
MULTIPLEX customer service department for advice and assistance.
! Read Chapter 12. - The system in use -
and keep to the recommendations !
6
3. The COCKPIT
MM
transmitter
The illustration shows a transmitter fitted with optional accessories.
Specification:
Dimensions: 180 x 180 x 35 mm
Weight incl. battery: approx. 600 g
No. of channels: 7 proportional channels
Power supply: 7,2 V / 600mAh (optional 1000 mAh, Order No. 15 5510)
Current consumption: approx. 170 mA
Operating temperature: -15° C to + 50° C
Transmitter aerial
Slider # 7 5720 (optional transmitter control)
Universal socket (on side):
- battery charging
- diagnosis operation
- teacher/pupil operation
Neckstrap lug
Stick unit
right
Digital trim (4 x)
ON/OFF switch
Monitor lamp
Aerial storage compartment
(bottom)
(optional transmitter control)
LCD screen
Stick unit
left
Function or
control switch
7
4. Switching on for the first time
4.1. Preparation
4.1.1. Charging the transmitter battery
On the left-hand side of the transmitter you will find the MULTIPLEX universal
socket. We call it „universal“ because you can use it for several functions:
• charging the transmitter battery,
• connecting the cable for teacher/pupil operation (9.2. Teacher/pupil mode), and
• connecting the cable for diagnosis operation (12.3. Using the diagnosis lead).
Charging the battery - important note:
•• Automatic battery fuse
The battery installed in your transmitter is fitted with an internal thermal fuse.
The COCKPIT
MM
must be used only with a genuine MULTIPLEX battery
fitted with this type of fuse.
This fuse protects the battery from excessive current flow if a short-circuit should
occur.
!!
When the short-circuit is removed, the fuse element cools down within about
one minute, and the battery then works again normally.
•• First connect the charge lead to the charger
Always connect the charge lead to the battery charger first, and only then to the
transmitter. If you do it the other way round, the banana plugs on the charge lead
could touch and short-circuit the battery.
•• When charging the battery please note:
Normal (slow) charging:
no restrictions or special measures required.
Rapid charging with automatic charge termination: do not exceed the maximum
current stated in the operating instructions. If you ignore this, the fuse element may
trip, and the charge process will be broken off prematurely.
Never exceed the charge currents stated by the manufacturer!
4.1.2. Charging the receiver battery
The same recommendations apply to the receiver battery.
Read the manufacturer’s charging notes, which are printed on the
battery. The charge currents stated by the manufacturer must not be
exceeded!
8
4.1.3. Battery chargers and accessories
Plug-type charger
for 230 V~ # 14 5535 (50 mA) or # 14 5536 (100 mA)
for 110 V~ # 14 5538
These units charge the transmitter and receiver batteries simultaneously at around
50 mA (# 14 5535) or 100 mA (#14 5538). Charge leads to suit MULTIPLEX transmit-
ter and receiver batteries (MPX connector system) are fitted to the chargers as stan-
dard.
Combilader 5/700 for 230 V~ # 14 5541
This unit charges the transmitter and receiver batteries simultaneously at a maxi-
mum total rate of around 700 mA.
Charge leads are available as follows for:
• MULTIPLEX transmitter ⇒ # 8 6020
• Receiver battery (MPX connector system) ⇒ # 8 5106
• Receiver battery (UNI connector system) ⇒ # 8 5094
• Receiver battery (Micro connector system) ⇒ # 8 5112
PiCO line AUTO-Lader # 9 2526 for use with a 12 V car battery or a stabilised power
supply
This battery charger features automatic charge termination, and is designed for
rapid-charging of flight batteries with up to seven cells fitted with the HC (green)
connector system. It can also charge your transmitter and receiver batteries pro-
vided that they are of the rapid-charge type (read the battery manufacturer’s notes
if you are not sure).
Charge leads are available as follows for:
• MULTIPLEX transmitter ⇒ # 8 5163
• Receiver battery (MPX connector system) ⇒ # 8 5099
• Receiver battery (UNI connector system) ⇒ # 8 5096
• Receiver battery (Micro connector system) ⇒ # 8 5097
Drive batteries (flight packs) with the MULTIPLEX HC (green) connector system can
be connected to the charger directly.
Other battery chargers with banana plug sockets (4 mm Ø)
Charge leads are available as follows for:
• MULTIPLEX transmitter ⇒ # 8 6020
• Receiver battery (MPX connector system) ⇒ # 8 5106
• Receiver battery (UNI connector system) ⇒ # 8 5094
• Receiver battery (Micro connector system) ⇒ # 8 5112
9
4.1.4. Fitting the transmitter crystal
First open the transmitter (Fig. I). Transmitter crystals are fitted with a blue plastic
sleeve and bear the code letter „S“ before the channel number. Check also that the
crystal is correct for your transmitter’s frequency band.
You can tell the frequency band of any MULTIPLEX transmitter by the colour of the
aerial wire (flexible wire from the main circuit board to the aerial):
• orange = 35 MHz band
• green = 40 MHz band
• red = 72 MHz band
Fit the transmitter crystal in the appropriate socket on the main circuit board
(see Fig. II).
Please be very careful when handling crystals:
• Don’t let them fall
• Don’t force them into the socket
• Don’t subject them to vibration in use or in storage
4.1.5. The transmitter sticks
The sticks of the COCKPIT
MM
transmitter feature:
• variable spring tension
• selectable self-neutralising action or ratchet (non-neutralising)
• height-adjustable stick tops
Adjusting the stick tension (see Fig. III)
The sticks of your transmitter are fitted as standard with neutralising springs. This
means that the sticks always return to centre when you release them. You can ad-
just the spring tension to suit your personal preference by rotating the M2 x 16
cross-point screws. Turn the corresponding screw clockwise to increase spring ten-
sion, and anti-clockwise to reduce spring tension.
Activating the stick ratchet (Fig. IV)
As standard the transmitter is supplied with all four primary stick functions self-
neutralising. However, for many functions (e.g. throttle or spoilers) the neutralising
action is not required. For this reason any of the sticks can be converted from
„spring-neutralising“ to „ratchet“ operation if required. The parts required for the
conversion are supplied in a separate plastic bag in the transmitter packaging.
This is the procedure for activating the ratchet:
1. Disable the neutralising spring
Locate the M2 x 16 cross-point screw in the accessory bag and screw it fully into
the plinth designed for it.
2. Now screw the ratchet spring to the stick unit frame using the cross-point 2.2 x
6 mm screw.
Caution: don’t over-tighten the screw, otherwise you could strip the threads in
the plastic.
10
Replacing and adjusting the stick tops
The stick tops are a push-fit on the sticks; they are secured by a twisting motion.
1. To release a stick top rotate the plastic moulding until you feel it come loose.
The stick top can then easily be pulled off the stick shaft.
2. To fit a stick top, first fit the plastic moulding onto the stick and rotate it until it
slips easily down the shaft. Set it at your preferred length, and lock it by twist-
ing the stick top through about 180°.
4.1.6. COCKPIT
MM
expansion facilities and re-adjustment
In its standard form the COCKPIT
MM
features up to 7 control channels (4 stick channels,
3 auxiliary channels), depending on the version you have purchased. You can con-
vert or expand the transmitter to meet your individual needs and wishes.
Auxiliary channels
The three auxiliary channels (controls E, F, G) can be operated by any combination
of:
• slider (# 7 5720)
• rotary adjustor (# 7 5719)
• 2-position or 3-position switch (# 7 5742 resp. # 7 5740)
These controls are connected to the sockets marked E, F and G on the main circuit
board (Fig. V).
Important:
After installation or modification of controls re-adjustment is necessary!
If auxiliary controls are added or their connecting location is changed, all con-
trols must be realigned. Do not attempt to realign the transmitter until you are
familiar with the operating philosophy of the transmitter (see 5. Operating phi-
losophy).
This is how you realign controls:
Procedure
Display
GB: D:
1.
In the menu SETUP select –ADJ– and move to
the bottom line (CT- appears)
-ADJ- -ABGL-
CT- CT-
2.
Set all controls to centre position
(sticks/slider/rotary adjustor/switches)
3.
Go back to the top line.
All centre positions are stored now.
-ADJ- -ABGL-
4.
Move all controls (one by one) slowly to both of
their extreme positions and hold the extremes
for approx. 3 sec.
Don’t move stick in two directions at a time!
When you quit the menu (Digi adjustor turned
to the left) all adjustment values are stored.!
5.
Continue as shown in the flow chart.
17
5.4.2. Trim display
The trim settings are shown on the screen in the form of bars:
Trim neutral
1 trim step to the right
4 trim steps to the right
Full trim movement to the right (11 steps)
If you move the trim to maximum trim travel you will hear a beep as a warning,
which differs from the trim step beeps. You will hear a trill to confirm that the trim is
at centre (neutral). (Try it to hear the different sounds!)
5.4.3. Trim memory
A crucial advantage of modern micro-computer radio control systems lies in the fact
that the transmitter can store the optimised trim settings for each model. The ad-
vantage of this facility is that you can be confident that the same trims are set when
you select a particular model memory as when you last used that model. The model
therefore behaves exactly as it did last time out, and you won’t have any nasty sur-
prises. The COCKPIT
MM
features a trim memory, and you, as user, don’t need to con-
cern yourself with it at all. When you switch the transmitter off, the current trim
values are automatically stored. When you switch on again, select the appropriate
model memory (if you have changed models), and you can fly again immediately,
with the trims correctly set automatically.
5.4.4. Trim type (centre trim)
All four trims work on the centre trim principle (exception: see 8.2.3.: throttle trim
type). That means that the end-points of the servo’s travel are unchanged even if
you alter the trim setting, and the same applies if you adjust the servo centre in the
SERVO menu. In contrast to standard trims, you can always exploit the full servo
travel to both sides.
Servo
travel
Control travel
-100%
+100%
+100%
0%
0%
untrimmed
trimmed
Trim +22 %
Trim -22 %
30
This is how you activate the DELTA mixer:
Procedure
Display
GB: D:
1.
Select the DELTA setting in the MIX menu and
switch to the second line
DELTA DELTA
OFF AUS
2.
Activate the DELTA
(example: elevator reversed)
DELTA DELTA
ON AN
3.
Return to the first line
Continue as shown in the flow chart
This is how you adjust the DELTA mixer:
1. Switch the DELTA mixer on (ON))
2. In the SERVO menu set the correct direction of travel for aileron only (see 8.3.1.
Selecting the direction of rotation and servo signal format).
3. If you find that elevator is now reversed, select „ON-“ in the DELTA menu point.
4. Adjust the mixer ratio for elevator and aileron using Dual Rates.
(see 8.2.4. Dual Rates).
Note:
When setting the servo end-points ensure that the travel of both elevons is identical
(see 8.3.2. Adjusting the servo centre and end-points).
8.5.4. Aileron differential for models with two aileron servos
!!
This mixer is primarily required in order to provide the aileron control signal for
two aileron servos
(servos 1 and 5). This basic requirement is met simply by setting
a differential value of at least 1%. If you set the value to 0%, the aileron signal is
output to Servo 1 only!
Within the same mixer you can set differential aileron travel to reduce the travel of
the down-going aileron. The purpose of this is to correct the negative roll moment
(adverse yaw) which can occur with high aspect ratio wings, and which tends to
yaw the model in the opposite direction to the desired turn.
Aileron differential can be set to any value in the range 1% to 100% (100% = no
down-travel = „split“ ailerons). If the plan for your model does not state the recom-
mended aileron differential, a good starting point is about 50% (full up travel, half
down travel). The optimum differential setting can only be found by practical flight
testing.
Note:
If you set differential travel, but find that the up aileron movement is reduced in-
stead of the down travel, change the set value to a negative one.
For example: 50% differential means that the aileron travel in one direction is only
half as great as the travel in the other direction. Naturally this only applies if the
aileron travels are identical in both directions when differential is switched off (see
8.3.2. Adjusting servo centre and end-points).
36
• Set maximum and minimum collective pitch on the main rotor as described in
the helicopter instructions.
• It is important to set up the throttle servo linkage in such a way that the motor
can be set to full throttle with the idle-up slider, and can also be stopped
completely without the throttle servo being stalled (mechanical obstruction)
at either end-point. This is done by selecting the correct pushrod length and
using the correct linkage hole on the servo output arm.
TIP for setting up the main and tail rotors for hovering:
If the helicopter instructions do not state collective pitch values, a good starting
point for the main rotor is a collective pitch of around 5° for the
hover.
The tail rotor can also be set up approximately as follows (see
drawing alongside):
• Swivel both tail rotor blades so that they point vertically
upwards
• The distance between the two tail rotor blade tips should be
about 10 - 15 mm. Adjust the length of the tail rotor pushrod
until this is the case.
With the pitch angle set correctly, the tail rotor will counteract the
torque of the motor at the hover. You will need to carry out a se-
ries of practical flight tests to find the optimum setting. The aim is
to prevent the model’s tail swinging round when the model is in a stable hover.
8.6.3. Static tail rotor compensation
The basic setting of the tail rotor required to counteract the torque of the main
rotor at the hover has already been established in Chapter 8.6.2. If you cause the
helicopter to climb or descend from the hover (by changing the collective pitch
setting), main rotor torque also rises and falls. The helicopter then tends to rotate
around the vertical axis, since tail rotor compensation is no longer correct. When
adjusted correctly, static tail rotor compensation is designed to correct this un-
wanted rotation when the helicopter climbs or descends.
This is how you set static tail rotor compensation:
PROCEDURE
Display
GB: D:
1.
Select the TAIL PI setting in the MIX menu and
switch to the second line
T-ROT HECK
2.
Set the mixer value e.g. 20%
3.
Return to the first
Continue as shown in the flow chart
37
TIP: setting static tail rotor compensation
If the building instructions supplied with your helicopter do not
state recommended values for tail rotor compensation, a good
starting point for the mixer is as follows:
• Swivel both tail rotor blades so that they face vertically up-
wards, as described for the basic tail rotor setting (see 8.6.2).
• Move the collective pitch stick to max. collective pitch (climb).
• Set up the tail rotor compensation mixer TROT CP so that the
distance between the two blade tips is to around 30 mm.
The optimum setting can only be established by practical flight
testing (see 8.6.7).
8.6.4. Auto-rotation
The term auto-rotation refers to a non-powered landing by a helicopter, i.e. it is a
method of landing the model safely if the motor should cut in the air. The collective
pitch of the main rotor is set to a negative value, and the airflow through the rotor
keeps it spinning while the model descends rapidly. Sufficient energy is maintained
in the rotor for a safe flare just above the ground followed by a gentle landing -
provided that the pilot judges the approach correctly. This flight manoeuvre is diffi-
cult to get right, but very important, and the COCKPIT
MM
makes it as simple as possi-
ble to practise it. The transmitter can be fitted with an auto-rotation switch which
can be employed for practising auto-rotation landings as well as for genuine
„autos“ if the motor actually cuts in flight. Install a 2-position switch in the left-hand
outboard well, and connect it to socket S3. You can then use it to switch directly
from normal flight to auto-rotation.
What does the auto-rotation switch do?
The switch disables the collective pitch / throttle mixer, which is automatically acti-
vated when you select the Helicopter model type. For auto-rotation practice the
auto-rotation throttle setting (AROT GAS) can be set to any value in the range 0 to
75%.
This is how you set auto-rotation throttle:
Procedure
Display
GB: D:
1.
Select the AROT THrottle setting in the MIX menu
and switch to the second line
AROT AROT
TH GAS
2.
Set the auto-rotation throttle value e.g. 45%
3.
Return to the first line
Continue as shown in the flow chart
! See also the notes on the following page!
38
Notes:
For practising auto-rotation landings you should set the auto-rotation throttle to a
value which ensures that the motor runs at a safe idle, but is not driving the rotor,
i.e. the centrifugal clutch is reliably disengaged.
You can use the motor OFF switch (see 9.1) to cut the motor completely during the
auto-rotation, if you wish.
Since the rotor is no longer driven by the motor during the auto-rotation descent,
main rotor torque is reduced to nil, so the tail rotor no longer has to provide com-
pensation. That is the reason why the auto-rotation switch turns off static tail rotor
compensation (see 8.6.3). The basic pitch angle of the tail rotor blades, which is
designed to compensate for main rotor torque when hovering (see 8.6.2), is re-
duced to a value of around 0° by the tail rotor offset.
This is how you set tail rotor offset:
Procedure
Display
GB: D:
1.
Select the T-ROT OF setting in the MIX menu
and switch to the second line
T-ROT HECK
OF OF
2.
Set the mixer value e.g. 15%
3.
Return to the first line
Continue as shown in the flow chart
Note:
To set the mixer value for the tail rotor offset swivel the tail rotor blades up verti-
cally again as already described. Adjust the mixer value so that the two blade tips
are in line with each other.
8.6.5. Idle-up
The idle-up function is required to prevent motor speed falling off too much when
you bring the model down by selecting a negative collective pitch setting. On the
COCKPIT
MM
you can pre-select the minimum motor speed with the slider (see 8.6.2).
Start the motor and run it at idle, with the model parked on the take-off site, and
push the idle-up slider to the centre position. Do this slowly and steadily so that the
motor brings the system up to nominal rotational speed with minimum stress. The
throttle and collective pitch curves should be set up (see 8.6.7) in such a way that
the idle-up select slider stays at centre (centre detent) all the time the model is fly-
ing. This is a defined position for idle-up which can be found easily for every flight.
44
But only with
the telescopic aerial
fully extended!
approx. 300 m
10.4. How effective is Channel-Check?
With the telescopic aerial fully extended Channel-
Check monitors the airwaves over a radius of about
300 m. Of course, the monitoring radius varies
according to the ambient conditions in which you are
operating your transmitter. Flat or hilly ground, the
type of terrain, other radio control transmitters already
in use, other kinds of transmitter (radio, television,
navigation systems etc.) can reduce the effective
monitoring radius.
!!
With the telescopic aerial collapsed the ambient influences become relatively
so powerful that it is not possible to state the effective monitoring radius reliably.
CAUTION:
„Channel vacant“ only applies to the moment in which you switch on.
When your channel has been checked, the RF module stays
switched on permanently.
Even if interference should occur subsequently
or if another transmitter on the same channel is switched on later.
45
11. Installing the receiving system in the model
Fig. VI shows the optimum arrangement of the receiving system components in the
model. As far as possible you should consider and work out the position of the re-
ceiving system components in the model even before you start building.
The following points are particularly important:
• Keep the receiver as far away as possible from
- electric motors
- electrical ignition systems
- servos
- batteries
- cables (especially leads carrying high currents).
• Deploy the receiver aerial in as straight a line as possible, and run it out of the
model by the most direct route
(e.g. tension it to the fin with a rubber band).
• Do not shorten/extend the aerial, and don’t leave it coiled up inside the model.
• Do not deploy the aerial inside a model component, or stick it on top of a
model component, which is reinforced with carbon fibre (signal shielding).
• Protect the receiver from vibration. Pack it in foam and stow it loosely in the
model.
If your model has an electric power system, we recommend that you install the
receiving system as shown in Fig. VI. Keep the distance between the receiving sys-
tem and the power system as great as possible, as the currents are high and can
produce serious interference. Ensure that all electric motors are effectively sup-
pressed.
Before the first flight carry out a particularly thorough range check (see 12.2.:
range testing) with the motor stopped and with the motor running.
If you are obliged to fit servo extension leads in the model
, the long cables will
have an effect on the reception conditions inside the airframe. If the length of any
servo lead is greater than 60 cm, a separation filter must be used at the receiver.
Separation filters may also be required to eliminate interference where servo leads
run parallel to each other over a distance of 25 cm or more. Your local model shop
or the MULTIPLEX Service Dept. will provide information on what you need (see
12.5.: What should I do if I have queries or problems?)
12. The system in use
12.1. Post Office regulations for the U.K.
Radio controlled models are of two types - those which operate on the ground or
on water, known as „surface“ models, and those which operate in the air. The first
group includes model cars, trucks and buggies, and also model boats of all types.
The second encompasses fixed-wing model aircraft and rotary-wing machines
(mainly helicopters).
48
13. Accessories
Transmitter neckstrap # 8 5161
Transmitter case # 76 3321
Channel Check module 35 MHz # 7 5164
Channel Check module 40 MHz # 7 5165
Expansion units, switches
On/Off switch (E/A) # 7 5742
On/Off/On switch (E/A/E) # 7 5740
On/Of/Momentary switch (E/A/T) # 7 5707
Slider # 7 5720
Rotary adjustor # 7 5719
Teacher-pupil lead # 8 5121
Diagnosis lead for:
MPX switch harness with charge socket # 8 5105
EinStein # 8 5162
Transmitter charge lead # 8 6020
Transmitter battery, 6/1000 mAh # 15 5510
Service addresses:
Austria Heinz Hable, Wien 0732-321100
Belgium Jean Marie Servais, Jambes 081-304564
France Claude Hubscher, Strasbourg 03-88411242
Germany MULTIPLEX Service 07233-7333
Netherlands Jan van Mouwerik, Maasland 01-059-13594
Sweden ORBO, Solna 08-832585
Switzerland Werner Ankli, Zullwil
K. Elsener
0691-7919191
061-3828282
© MULTIPLEX 1999 (2
nd
edition Ap) Printed in Germany.
Errors, alterations and omissions excepted. Conditions of availability reserved.
# 85 5690
MULTIPLEX modelltechnik gmbh
•
Neuer Weg 15
•
D-75223 Niefern
… 44 …

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