Related Manuals for JETI model duplex REX 12A Series
Summary of Contents for JETI model duplex REX 12A Series
- Page 1 COMPLEX RADIO CONTROL SYSTEM COMPLEX RADIO CONTROL SYSTEM COMPLEX RADIO CONTROL SYSTEM ® User manual User manual REX Assist receivers 02/2023...
- Page 2 COMPLEX RADIO CONTROL SYSTEM...
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Page 3: Table Of Contents
COMPLEX RADIO CONTROL SYSTEM Content: Introduction..................01 2. Technical data ..................02 2.1 Technical data ................03 2.2 Important Notices ..............03 3. Installation ................... 05 3.1 Installation in the model ............05 3.2 Power supply ................07 3.3 Operation ..................08 3.4 Binding .................. - Page 4 COMPLEX RADIO CONTROL SYSTEM 4.3.2 Training: Airplanes ............25 4.3.3 Normal (Damping): Airplanes ........26 4.3.4 Heading Hold: Airplanes ..........26 4.3.5 Stabilisation of the horizon: Airplanes and Multicopters ................. 26 4.3.6 Stabilise: Multicopters ............27 4.3.7 Sport: Multicopters ............27 4.3.8 Acro: Multicopters .............
- Page 5 COMPLEX RADIO CONTROL SYSTEM 6. Advanced properties ................38 6.1 PID control setting ..............39 6.2 "Stabilise" mode setting ............. 39 6.3 Acro mode settings ..............40 6.4 Arming switch ................41 6.5 Fail-Safe ..................41 7. Alternative pins configuration ............43 7.1 Receiver Outputs .................
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Page 6: Introduction
COMPLEX RADIO CONTROL SYSTEM REX receivers with function ASSIST Introduction English The REX A receivers enhance the REX series of receivers and extend it with the intelligent flight stabilization feature, which is designed for airplane models and multicopters. This stabilization works in all three axes of the model and facilitates flying in windy or otherwise challenging conditions. -
Page 7: Technical Data
COMPLEX RADIO CONTROL SYSTEM Technical data Basic data 7SA** 9SA** 12A* 38x25x11 42x28x11 60x16x13 60x16x13 51x28x11 51x28x11 Dimensions [mm] Weight [g] 2x100 2x200 2x200 2x200 2x200 2x400 Antenna lenght [mm] Number of output channels -10 to +85 -10 to +85 -10 to +85 -10 to +85 -10 to +85 -10 to +85 Temp. -
Page 8: Technical Data
COMPLEX RADIO CONTROL SYSTEM 2.1. Properties Up to 16 stabilised airplane channels. ź Support for different multicopter types – from tricopters to ź octocopters. Up to 3 adjustable flight modes, options for stabilising the ź horizon and altitude. In-flight gain tuning using free channels. ź... - Page 9 COMPLEX RADIO CONTROL SYSTEM that all electronics must be optically isolated from the ignition unit and ideally located as far as physically possible from the engine itself. Do not expose the receiver to excessive vibration. Sensors in the ź receiver are very sensitive and vibrations are an undesirable phenomenon.
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Page 10: Installation
COMPLEX RADIO CONTROL SYSTEM Installation 3 Installation 3.1. Installation in the model Always place the receiver in the model parallel to the flight axes and ideally as close as possible to the center of gravity (especially for multicopters). This is important for the proper functioning of stabilisation and its correct response. - Page 11 COMPLEX RADIO CONTROL SYSTEM There are several ways to place the receiver in the model, and you need to activate this position in the setup wizard. The direction of the arrow on the receiver sticker determines its placement: Standing - right Standing - on the Rotated - 90°...
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Page 12: Power Supply
COMPLEX RADIO CONTROL SYSTEM 3.2. Power supply When designing a wiring system in the model, always be careful about choosing a suitable power supply so that it is sufficiently current-rated and its output voltage is compatible with the receiver, servos and other electronics. It is recommended that the REX A receivers be powered by low-resistance Li-XXX type batteries or a stabilized BEC voltage source (either as a separate device or integrated in the speed controller). -
Page 13: Operation
COMPLEX RADIO CONTROL SYSTEM 3.3. Operation We recommend that you switch on the transmitter first and then subsequently the receiver. The transmitter confirms the switching on of the receiver with an acoustic signal. When switching off the system we recommend that you switch off the receiver first and then subsequently proceed with switching-off the transmitter. -
Page 14: Range Test
COMPLEX RADIO CONTROL SYSTEM You may bind an arbitrary number of receivers to one transmitter. The receiver, however, can only be bound to one transmitter, i. e. the receiver is only bound to the most recently bound transmitter. 3.5. Range test By range testing, you verify the correct operation of the transmitter and receiver. -
Page 15: Quick Setup
COMPLEX RADIO CONTROL SYSTEM Quick setup 4.1. Airplane From production the REX Assist receivers behave as standard receivers and stabilisation is not active by default. This can be used to set up an airplane model - the initial procedure is similar: Place the receiver in the model according to the "Installation in the model"... - Page 16 COMPLEX RADIO CONTROL SYSTEM Specify the model type so that its flight characteristics best match one of the options. Each model type i n c l u d e s p r e c o n f i g u r e d a n d optimised stabilisation presets.
- Page 17 COMPLEX RADIO CONTROL SYSTEM Carefully make the calibration of the sticks, elevators and rudder functions step by step according to the instructions of the wizard. After correct calibration, the values in the Controller line have to be in the range of -100/0/+100 in the neutral and full positions of the controller of the exact function.
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Page 18: Airplane Model Settings Optimisation
COMPLEX RADIO CONTROL SYSTEM Confirming the "Apply and exit wizard" option will save the set stabilisation parameters and exit the setup wizard. Before flight, place the model on the ground and hold it stable during the gyroscope initialization. Once the initialization is completed, it is then possible to control servos. -
Page 19: Choice Of Flight Modes
COMPLEX RADIO CONTROL SYSTEM Heading hold – determines how strongly the model will hold its orientation in the given direction in the " H e a d i n g H o l d " m o d e . I n t h e "Normal"... - Page 20 COMPLEX RADIO CONTROL SYSTEM Turn assistant - stabilisation will automatically optimize the turning of the model using ailerons and rudder. Damping only - Ticking this option will allow you to use butterfly, trims and glider mixes without any side effects. Fail-Safe: in "intelligent"...
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Page 21: Multicopter
COMPLEX RADIO CONTROL SYSTEM 4.2. Multicopter Before you connect and configure the REX A receiver for the first time in a multicopter model, we recommend disconnecting speed controllers with motors from the receiver to avoid accidental spinning. Remove the propellers from motors. Place the receiver in the model according to the „Installation in the model”... - Page 22 COMPLEX RADIO CONTROL SYSTEM Select the type of your multicopter frame and continue to the next page by pressing the "Next" link. The following types of frames are supported (direction of rotation and motor sequence have to always be observed): Tricopter Y Quadcopter + Quadcopter X...
- Page 23 COMPLEX RADIO CONTROL SYSTEM Select the multicopter characteris- tics to best match your model. Each type includes preconfigured and optimised presets for stabilisation so that the first flights are enjoyable and additional settings are kept to a minimum. Select the receiver position in the m o d e l s o t h a t t h e d i s p l a ye d graphics matches real situation.
- Page 24 COMPLEX RADIO CONTROL SYSTEM channels. If all the servos in the model are digital, the output period will be automatically set to 7.5ms. Otherwise, it will be 17.5ms. The output control period for the motors is 2.5 ms, which means 400Hz. •...
- Page 25 COMPLEX RADIO CONTROL SYSTEM available. In position 1 the altitude and horizon stabilisation is enabled by default. Switching to position 2 (center), a simple horizon stabilization mode with direct throttle is activated. Switching to position 3 activates the aerobatics mode. Assign the throttle channel.
- Page 26 COMPLEX RADIO CONTROL SYSTEM In the „Configuration/Multicopter Settings” menu, test the correct rotation direction of the motors according to the diagram displayed on the top of the screen. Now lay the model on a flat surface - once the stabilisation is initialized, the speed controllers usually respond by beeping.
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Page 27: Optimise Multicopter Settings
COMPLEX RADIO CONTROL SYSTEM Continue flying in one place and at low altitude - if the flight is unstable or oscillation occurs in any axis, land and adjust the gain of the PID control loop (see the next chapter). Retest the new setting again in flight. - Page 28 COMPLEX RADIO CONTROL SYSTEM buttonon the transmitter is pressed. Use OneShot125 - check this option to enable OneShot125 mode for controlling the multicopter speed controllers. This is a special mode where the pulses from the receiver are 8 times shorter than standard servo pulses.
- Page 29 COMPLEX RADIO CONTROL SYSTEM Integral coefficient - determines the weight of stabilisation error accumulated from the past. Thanks to integrating, the receiver is able to return the model to its original orientation, even if it has been previously displaced. Set this factor so that the model does not tilt in the air in any axis and keeps a steady attitude in the Sport or Acrobatic mode.
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Page 30: Choice Of Flight Modes
COMPLEX RADIO CONTROL SYSTEM 4.2.2. Choice of flight modes Depending on your preferences, choose which flight modes to use during flight - a total of 5 are available, switching between three is available (see the Description of flight modessection). For each flight mode, you can set the default gain (this multiplies the proportional, integral and derivative coefficients in all axes), and you can specify whether you want to use gain tuning via special channels (see „Configuration ->... -
Page 31: Normal (Damping): Airplanes
COMPLEX RADIO CONTROL SYSTEM does not interfere with the steering when the model flies horizontally. However, as soon as you want to make a manoeuvre, the stabilisation will not allow you to exceed the maximum safe angles for tilting the aileron axis or the elevator. Aerobatics in this mode is not possible. -
Page 32: Stabilisation Of The Horizon: Airplanes And
COMPLEX RADIO CONTROL SYSTEM 4.3.5. Stabilisation of the horizon: Airplanes and Multicopters Stabilisation of the horizon is also suitable for beginners. In this case, the stabilisation algorithm makes it possible to perform basic aerobatics, but if the pilot leaves the controls in the center position, the model is levelled to horizontal flight. -
Page 33: Acro: Multicopters
COMPLEX RADIO CONTROL SYSTEM 4.3.8. Acro: Multicopters This mode is similar to the Sport mode, additionally with direct stick input applied (adjustable in „Configuration - Advanced Properties - Aerobatics Factor/Stick Priority”). E.g. The 60% aileron stick priority means that at maximum left or right stick position, the aileron stabilisation gain will be reduced to 60%, and from 40% the direct stick position will be applied. -
Page 34: Additional Stabilisation Features
COMPLEX RADIO CONTROL SYSTEM Additional stabilisation features 5.1. Throttle to PID attenuation (TPA) This feature is available for multicopter models to help suppress oscillations when throttle is pushed rapidly. If the model flies well with low throttle, but begins fast oscillations when adding throttle, s e t "... -
Page 35: Additional Channels
COMPLEX RADIO CONTROL SYSTEM 5.2. Additional channels To assign additional channels, locate „ C o n f i g u r a t i o n / C h a n n e l A s s i g n m e n t / A s s i g n Ad d i t i o n a l Channels”. -
Page 36: Camera Gimbal
COMPLEX RADIO CONTROL SYSTEM Fail-Safe channel - Here you can assign a dedicated channel operated by a two-position switch that, after switching to the active position, will simulate the signal loss event. The servos will move to their predefined positions afterwards. Engine control remains active. - Page 37 COMPLEX RADIO CONTROL SYSTEM can configure the individual outputs for the gimbal servos either by going through the wizard (step 7) or in the „Configuration/Channel assignment menu /Gimbal channels”. Gimbal Roll - shows the channel assigned in the transmitter to tilt the camera to the left and right.
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Page 38: Connecting An External Led Strip
COMPLEX RADIO CONTROL SYSTEM 5.4. Connecting an external LED strip The REX A receivers support the connection of an external LED strip consisting of up to 32 programmable RGB LEDs of the WS2812 type. A single receiver port is dedicated to the strip, which must first be configured to enable the strip. - Page 39 COMPLEX RADIO CONTROL SYSTEM The function and color of the LED light is adjustablesequentially according to their order and each of the diodes can be setindividually according to the table: LED not lit The color indicates the "Unlocked" and "Locked" states, i.e.
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Page 40: Vibration Analysis And Filtering
COMPLEX RADIO CONTROL SYSTEM 5.5. Vibration analysis and filtering REX Assist receivers have a graphical vibration analyzer and advanced digital vibration filtering algorithms. In this way, it is possible to suppress unwanted effects caused by vibrations in the model. The analyzer graphically displays the intensity of vibrations at different frequencies, and with the help of two filters you can subsequently eliminate their negative effects on the functions of the stabilisation system. -
Page 41: Band Filter (Notch Filter)
COMPLEX RADIO CONTROL SYSTEM 5.5.3 Band Filter (Notch Filter) – it's used to filter out specific frequencies caused by engine vibrations. You can additionally activate this filter if the vibrations caused by the engine are relatively high. Check the vibration level regularly via "Vibration Analysis"... - Page 42 COMPLEX RADIO CONTROL SYSTEM stabilisation is armed and ready for flight. The internal barometer is being calibrated at the same time as the gyroscope to create a reference zero level for calculating the relative altitude. Calibration of the accelerometer is a more complex process. The receiver is already calibrated from the factory, but due to the Earth's gravitational field, which is not constant all over the planet, the accelerometer can show inaccurate measurements.
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Page 43: Advanced Properties
COMPLEX RADIO CONTROL SYSTEM Advanced properties Output period – setting the signal period for the servos. At lower values, the servos have a faster response and more consumption. For analog servos, the recommended period is 20ms, for digital servos "Auto". Number of PPM channels –... -
Page 44: Pid Control Setting
COMPLEX RADIO CONTROL SYSTEM 6.1. PID control setting Aileron/Roll rate, Elevator/Pitch rate, Rudder/Yaw rate - in this section you set the individual PID control coefficients for each axis separately for multicopter models. These coefficients are applied in all flight modes to stabilise the rotational speed around each axis. Vertical Speed - PID coefficients to stabilise the climb and descent rate. -
Page 45: Acro Mode Settings
COMPLEX RADIO CONTROL SYSTEM and you can achieve, for example, with airplane models a slightly pulled horizontal flight. Quick trim setting - place the model on a flat solid horizontal surface so that its position exactly matches the horizontal flight (a multicopter should be positioned exactly horizontally). -
Page 46: Arming Switch
COMPLEX RADIO CONTROL SYSTEM Dead Zone - dead zone parameters indicate the size of the area around the center position of the controls, where the resulting stick position in the given direction is considered zero. 6.4. Arming switch The arming procedure is automatic for a i r p l a n e m o d e l s s o t h a t t h e stabilisation is enabled automatically after receiver initialisation. - Page 47 COMPLEX RADIO CONTROL SYSTEM outputs can be configured individually with the following options: •Hold - the receiver repeats the last known values on its output. •Out OFF - the output pin is deactivated. •Fail-Safe - the output is moved to a position given by the parameter "Value"...
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Page 48: Alternative Pins Configuration
COMPLEX RADIO CONTROL SYSTEM Alternative pins configuration Here you can change the modes of the receiver pins. Servo outputs can be configured, for example, in digital input or digital output mode. Servo - standard impulse output for servo control (-100% ~ 1ms, 0% ~ 1.5ms, + 100% ~ 2ms). - Page 49 COMPLEX RADIO CONTROL SYSTEM default, and conventional servo pulses or OneShot125 protocol can be used for control. Camera control (roll, tilting/pitch, and pan/yaw) - output pins assignment for a stabilised camera gimbal controlled by servos. PPM Positive Output - standard PPM signal with positive logic of the PPM data stream.
- Page 50 COMPLEX RADIO CONTROL SYSTEM Table of possible functions on the individual receiver pins REX 6A REX 7A REX 7SA REX 9SA REX 10A REX 12A Pin1 Pin2 Pin3 Pin4 Y5, LED Y5, E2 Y5, E2 Y5, LED Pin5 Y5/E1 Pin6 Y6/E2 Y6/E1 Pin7...
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Page 51: Receiver Outputs
COMPLEX RADIO CONTROL SYSTEM 7.1. Receiver Outputs The receiver output settings screen allows you to redirect the transmitter channels to any receiver output. For clarity, the transmitter channels are described by their numerical value and their meaning. Group: As the last parameter, you can set the output group (A-H) for each servo separately. -
Page 52: Real Time Telemetry
COMPLEX RADIO CONTROL SYSTEM Real time telemetry By default, the receiver provides operational telemetry data such as battery voltage and signal strength. With integrated inertial sensors, it can a l s o p r o v i d e i t s o r i e n t a t i o n i n individual axes (roll, pitch and yaw) or total G-force. -
Page 53: Solving The Most Common Problems
COMPLEX RADIO CONTROL SYSTEM Solving the most common problems 9.1. General After binding the receiver, it is not possible to configure it using the DC/DS transmitter. But the Device Explorer screen displays the correct name (e.g. REX12A). Check the transmitter version (minimum version supporting the REX A receiver is 4.24). -
Page 54: Multicopter Models
COMPLEX RADIO CONTROL SYSTEM flight and land. Now reassign the primar y channels „Configuration/Channel Assignment” menu. When the stabilisation is enabled, the control surfaces do not return to the center position even when the model is at rest for a longer time. In Heading Hold mode, the model remembers its original direction before displacement and tries to return to that position. - Page 55 COMPLEX RADIO CONTROL SYSTEM the value in small steps to make the motors spin after arming. When at full throttle, the multicopter oscillates quickly, but when the throttle is in the middle, the flight is calm. We recommend enabling the "Throttle-PID Attenuation (TPA)" function in the „Configuration/Advanced Properties”...
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Page 56: Receiver Update And Configuration
COMPLEX RADIO CONTROL SYSTEM Receiver update and configuration 10.1. Update the receiver EX A receivers can be updated and configured by PC via JETI USB Adapter. The JETI Studio software is intended for all standard updates – you can d ow n l o a d i t f ro m o u r we b s i te : www.jetimodel.com USB adapter Procedure:... -
Page 57: Configuring The Receiver Via A Pc
COMPLEX RADIO CONTROL SYSTEM 10.2. Configuring the receiver via a PC With the JETI Studio program, it's possible to configure the receiver without a Duplex DC/DS transmitters, for example, if you use the Duplex Tx module in a transmitter from another manufacturer. Connect the receiver via its Ext. -
Page 58: Activation Of Extension Functions
COMPLEX RADIO CONTROL SYSTEM Activation of extension functions All receivers of the REX Assist series have an integrated vario and altimeter, including program support and telemetry data of these modules. These software modules are not active by default. They can be activated at any time after their purchase according to the following procedure: 11.1. -
Page 59: Activating The Receiver's Vario And Altimeter Function
COMPLEX RADIO CONTROL SYSTEM to get the registration code, connect the paired receiver to the transmitter and open the directory „Menu/ xxxx-xxxx-xxxx-xxxx Model/ Device Explorer/REXxA/ Info” open the menu of the registered receiver, selec t the expansion module "Vario for REX ASSIST" and make the payment after payment verification, you will receive an activation file in the format "Act-xxxxxxxxxx.bin"... - Page 60 COMPLEX RADIO CONTROL SYSTEM turn on the receiver first and then the transmitter. In the transmitter, go to "Menu/Model/Device explorer" Note: during the entire activation process, do not have any sensor connected to thee receiver and its power supply has to be stabl. the transmitter will ask you for activation and after confirmation the receiver will start the process of...
- Page 61 Warranty and post warranty service is provided by the manufacturer. We wish you successful flying with the products of: JETI model s.r.o. Příbor, www.jetimodel.com...
- Page 62 COMPLEX RADIO CONTROL SYSTEM THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. O P E R AT I O N I S S U B J E C T TO T H E F O L LO W I N G T W O CONDITIONS(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT...
- Page 63 COMPLEX RADIO CONTROL SYSTEM Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence.
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- Page 67 COMPLEX RADIO CONTROL SYSTEM REX7S, REX7SA, REX9S, REX9SA 05.01.2023...
- Page 68 COMPLEX RADIO CONTROL SYSTEM COMPLEX RADIO CONTROL SYSTEM Duplex-System EX: • Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units JETI model s.r.o. Lomená 1530, 742 58 Příbor Czech Republic - EU www.jetimodel.com info@jetimodel.cz...