Instructions
Dear customer, Dear fellow-modeller, The C OCKPITMM: 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 Cockpit is not comparable in any way with the earlier version. The new transmitter incorporates micro-processor technology, and it is this which provides its wideranging facilities and operating convenience.
1. Contents 1. Contents ...................................................................................................................3 2. Safety ........................................................................................................................5 3. The COCKPITMM transmitter ...................................................................................6 4. 4.1. Switching on for the first time............................................................................
8.3.1. 8.3.2. 8.4. 8.4.1. 8.4.2. 8.5. 8.5.1. 8.5.2. 8.5.3. 8.5.4. 8.5.5. 8.5.6. 8.5.7. 8.6. 8.6.1. 8.6.2. 8.6.3. 8.6.4. 8.6.5. 8.6.6. 8.6.7. Selecting the direction of rotation and servo signal format...............................................24 Adjusting the servo centre and end-points.....................................................................................25 Adjusting the transmitter controls ................................................................... 26 Dual-Rates............
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).
3. The COCKPITMM transmitter Transmitter aerial Slider # 7 5720 (optional transmitter control) Stick unit left Adjustor # 7 5719 (optional transmitter control) Universal socket (on side): - battery charging - diagnosis operation - teacher/pupil operation Function or control switch Stick unit right LCD screen Digital trim (4 x) ON/OFF switch Neckstrap lug Aerial storage compartment (bottom) Monitor lamp The illustration shows a transmitter fitted with optional accessories.
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).
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 transmitter and receiver batteries (MPX connector system) are fitted to the chargers as standard.
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.
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 twisting the stick top through about 180°. 4.1.6.
Function switches Three additional switch can be installed. The switched function depends on the selected model type: Functions for Functions for type UNI type HELI Combi-Switch Auto-rotation Dual-Rate Connection (s. fig. V) S3 S2 Timer and MOTOR OFF S1 Switch type 2-pos. (# 7 5742) 2-pos. (# 7 5742) 3-pos. (# 7 5740 or # 7 5707 E/A/T) The connectors can be fit to the main electronics board in either direction. When turned by 180 deg. the switch position for ON/OF is reversed.
Now connect the charged receiver battery to The Brick/EinStein (or a conventional receiver - see next page). The transmitter aerial is stored in the bottom of the case; remove it and screw it into the socket on the front of the transmitter. You are now ready to switch on the transmitter and The Brick/EinStein.
5. The operating philosophy 5.1. Introduction In the development of the C OCKPITMM we gave priority to useful, practical adjustment facilities and mixer functions in conjunction with a simple, easily understood method of programming which could be implemented quickly. The two elements which form the basis of programming the C OCKPITMM are the 3D digital adjustor and the LCD screen, which clearly and unambiguously shows the settings you have selected. All programming is based on ready-made menus.
5.2. Screen and 3D digi-adjustor The LCD screen consists of two lines, each capable of displaying 6 letters, numbers or symbols, and it forms the basic means of showing the menus and settings currently in use. When you first switch on the transmitter you will see operating screen 1: INFO screen 1 model type (e.g. UNI) model memory No. (e.g No. 1) Cursor line 1 Trim display (4x) (all 4 neutral) line 2 Operating voltage (e.g. 7.8 V) The first line always helps to orientate you, i.e.
5. Press the 3D digiadjustor once 1x You reach the settings of the SETUP menu. 6. Rotate the 3D digiadjustor 5 times clockwise 5x You reach the language select setting „TEXT“. At this point we ought to mention how the cursor 4 works: As soon as you have selected a setting at the parameter level, you can switch from the first line (orientation line) to the second line (setting line) by pressing the 3D digi-adjustor once.
5.4. Digital trims and trim value memory The purpose of the trims on a radio control transmitter is to adjust the neutral position of the controls to ensure that, for example, the model flies in a perfectly straight line without requiring any help from the pilot. 5.4.1. Digital trims The C OCKPITMM is the first MULTIPLEX transmitter to feature digital trims. This means that the trims no longer take the form of a slider or lever, but a rocker switch.
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.
6. Model memories An important element of any modern radio control system is the model memory, and the C OCKPITMM features 9 of them. Model memories provide a means of storing all the settings and trim values for each model separately. The advantages of model memories is illustrated in the following brief example: Suppose you acquire a second model aircraft after flying your first model for some time. By this time you have optimised all the settings for the first model.
6.2. Copying model memories The second setting in the MODEL menu is the copy function (COPY). This feature allows you to produce a duplicate of the contents of one model memory, which is then stored in a new memory spot. Note: any existing data in the memory into which you place the copy will be overwritten! Application Suppose you acquire a new model which is similar to an existing one.
7.2. Battery alarm threshold The C OCKPITMM features a battery alarm and a voltage display. You can read the battery voltage in the display, if you are in the INFO menu level (see menu overview, displays “INFO1” or “INFO2”). When the battery monitor detects that the voltage of the transmitter battery has fallen below the alarm threshold, a quadruple beep sounds as a warning. The second warning level is indicated by a continuous beep. You can vary this safe threshold level within the range 6.8 to 7.
8. Setting up a new model 8.1. Preparing the model and receiving system 8.1.1. Preparing the model For setting up a new model you will need the completely built model, set up correctly, ready to use. Thus the first step in preparation is to install the receiving system and the other essential components in your completely finished model. Please read Chapter 12. „The system in use“. 8.1.2.
This is how you select the model type: Procedure Display 1. Select the MODEL TYP setting in the SETUP menu and switch to the second line. 2. You can now select the model type e.g. H (for HELI) 3. Return to the first line. Continue as shown in the flow chart. Note: Erase model memory (RESET) If you change the model type in a model memory which contains the data for an existing model, the result is a RESET of that memory, i.e.
This is how you select the stick mode: Procedure Display 1. Select the MODE setting in the SETUP menu and switch to the second line 2. Select the stick mode e.g. MODE 3 3. Return to the first line. Continue as shown in the flow chart. 8.2.3. The Throttle/Collective Pitch trim of the COCKPITMM All settings are to be done in the menu item LEERL/IDLE (menu SETUP) gemacht.
8.3. Adjusting servos (direction of rotation, pulse format, centre and travels) The model’s receiving system must be switched on when you make these adjustments. When you do this the control surfaces and other controlled functions will move to pre-defined settings. Caution with electric-powered models. The motor could burst into life! If you have a fixed-wing model aircraft with two aileron servos, you should first set the DIFF mixer to 1% (see 8.5.1.). 8.3.1.
1. Procedure Select the SERVO1 (e.g. for servo 1) setting in the SERVO menu and switch to the second line 2. Set the direction of rotation and signal format e.g. MPX, reversed 3. Return to the first line. Continue as shown in the flow chart. Display 8.3.2. Adjusting the servo centre and end-points You can adjust the centre position and end-points (both directions separately) for all seven channels individually.
8.4. Adjusting the transmitter controls 8.4.1. Dual-Rates The Dual Rates facility alters the effect of a transmitter control for two directions of operation when the Dual Rate switch is operated. The C OCKPITMM features Dual Rates on three channels (aileron, elevator, rudder, or roll, pitch-axis and yaw in a helicopter). The switchable reduced travel can be set to any value in the range 100 - 0%, separately and independently for each channel. The default for all three transmitter controls is 60%.
TIP: Using Dual Rates to harmonise the control response when using the V-tail or DELTA mixer You can use the DUAL RATES facility to adjust the two inputs of a V-tail (rudder and elevator) or DELTA mixer (aileron and elevator). When used in this way a physical Dual Rates switch is not required. Example The elevator response of your V-tailed model may be too powerful, but its rudder response is normal. Solution: reduce the elevator travel with the Dual Rates elevator setting (DRATE HR). 8.4.2.
8.5. Mixers for fixed-wing model aircraft The following sub-menus appear in the MIX menu only if you have selected the Universal model type (UNI, U) in the SETUP menu (see 8.2.1. Sel. the model type). 8.5.1. Combi-Switch for coupled aileron and rudder The combi-switch makes it easier to move up from rudder/elevator models to „fullhouse“ control. This mixer couples ailerons and rudder, so that you only need to operate one transmitter control in order to steer the model.
This is how you activate the V-tail mixer: Display GB: Procedure D: 1. Select the V-MIX setting in the MIX menu and switch to the second line V-MIX OFF VMIX AUS 2. Activate the V-tail mixer V-MIX ON V-MIX AN 3. Return to the first line Continue as shown in the flow chart This is how you adjust the V-MIX mixer: 1. Activate V-MIX (see step 2. above) 2. In the SERVO menu set the correct direction of travel for rudder only as shown (see 8.3.1.
This is how you activate the DELTA mixer: Display GB: Procedure D: 1. Select the DELTA setting in the MIX menu and switch to the second line DELTA OFF DELTA AUS 2. Activate the DELTA (example: elevator reversed) DELTA ON DELTA 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.
Preparation: • Connect the aileron servos to channels 1 and 5. This is how you set aileron differential: Procedure Display 1. Select the DIFF setting in the MIX menu and switch to the second line 2. Set the aileron differential e.g. 50% 3. Return to the first line Continue as shown in the flow chart GB: AI AI 8.5.5. Flaperon mixer for trimming the wing section The term flaperon is a combination of flap (camber-changing flap) and aileron.
! Notes: If you wish to reverse the direction of flaperon travel, set a negative value (e.g. -10% ⇒ +10%). Deploying the flaperons may produce a change in pitch trim. You can correct this automatically with the FLP-CO mixer (see 8.5.7. Elevator compensation). Caution: deploying flaperons at high speed: For high-speed flying always set the ailerons up (speed setting) or leave them at neutral. Never set the ailerons down (thermal setting) for high-speed flying.
Notes: If the ailerons deflect in the wrong direction after you have selected spoilerons, swap over servos 1 and 5 at the receiver. ! The spoiler signal is still present at channel 6. Deploying the spoilerons may produce a change in pitch trim. You can correct this automatically with the SPL-CO mixer (see 8.5.7. Elevator compensation). 8.5.7.
8.6. Helicopter mixers 8.6.1. Introduction Safety note Radio-controlled model helicopters are complex flying machines which are not easy to control in the air. Operating a model helicopter without due care and skill, and without a responsible attitude, represents a high-risk activity.
8.6.2. Preparations a.) Preparing the transmitter: Select model type HELI (H): The special settings for helicopters appear in the MIX menu only if in the SETUP menu the model type HELI (H) is selected (see 8.2.1.). In the model type HELI the throttle servo is automatically controlled by the collective pitch stick (collective pitch → throttle mixing) Installation of the required switches and controls: Under 4.1.6. we mentioned already the necessity of additional control elements for helicopters.
• 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: 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 upwards, as described for the basic tail rotor setting (see 8.6.2). • Move the collective pitch stick to max. collective pitch (climb).
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.
8.6.6.
A. Move the collective pitch stick to the minimum position: Set the nominal rotational speed by adjusting the centre point of servo 5 (throttle). B. Set the collective pitch stick to the hover setting (centre): The model should now hover at an unchanged rotational speed. Adjust the throttle servo until this is the case. If the model hovers above or below the centre point of the collective pitch stick, the setting of servo 4 (collective pitch) should be adjusted until you can return the stick to centre. C.
! The timer is visible only in the operating screens INO 1 and INFO 2 ! This is how you set the alarm time: Procedure Display 1. Select the ALARM1 setting in the TIMER menu and switch to the second line 2. Set the alarm time, e.g. 2 min 30 sec 3. Return to the first line Continue as shown in the flow chart 9.2. Teacher/pupil mode The C OCKPITMM can be used as the pupil transmitter for „trainer“ operations by connecting it to a transmitter, which can be expanded with a teacher/pupil switch.
• • CAUTION: This setting must be left unchanged all the time you are using teacher/pupil mode. „PUPIL ON“ must remain active! Do not disconnect the teacher/pupil lead from either transmitter while you are using teacher/pupil mode! 5. Ending the teacher/pupil mode Press the 3D-digi-adjustor once. The cursor moves back to the upper line and the teacher/pupil lead can be disconnected from the transmitters.
10.2. Operating the transmitter with Channel-Check Once installed in the transmitter, Channel-Check carries out its work automatically every time you switch the transmitter on. You will hardly be aware of anything happening at this stage. However, you must ensure that Channel-Check is set to check the correct channel.
10.4. How effective is Channel-Check? With the telescopic aerial fully extended ChannelCheck 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.
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 receiving 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).
The frequency bands available for radio controlled models are 26.960 to 27.280 MHz General use, 34.995 to 35.255 MHz (Channels 60 - 85 incl.) Air only, 40.665 to 40.955 MHz (Channels 50 - 79 incl.) Surface only, and 458.500 to 459.500 MHz General.
12.3. Using the diagnosis lead If you just want to check and adjust your model without flying it, you can connect the transmitter directly to the receiving system by means of a diagnosis lead, without the transmitter radiating an RF signal. This is the procedure: 1. Connect the transmitter (multi-function socket) to the receiving system in the model using the diagnosis lead 2. Switch on the transmitter first (the RF section stays switched off) 3.
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