JETI model Duplex REX Assist Series User manual

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computer radio control system®User Manual User Manual User Manual ENReceivers REXFW 1.05FW 1.05FW 1.05COMPLEX RADIO CONTROL SYSTEMJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system1. Introduction ......................................................................................... 042. Technical data ...................................................................................... 05 2.1 Properties ..................................................................................... 06 2.2 Important Notices ....................................................................... 06 3. Installation ........................................................................................... 08 3.1 Installation in the model ............................................................ 08 3.2 Power supply ............................................................................... 10 3.3 Operation ..................................................................................... 11 3.4 Binding .......................................................................................... 11 3.5 Range test .................................................................................... 124. Quick Setup ........................................................................................... 14 4.1 Airplane ........................................................................................ 14 4.1.2 Choice of flight modes ...................................................... 19 4.2 Multicopter ........................................................................... 21 4.2.1 Optimize multicopter settings ........................................ 27 4.2.2 Choice of flight modes ...................................................... 301ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system 4.3 Description of flight modes ...................................................... 31 4.3.1 Manual (Assist Off): Airplanes ........................................ 31 4.3.2 Training: Airplanes ............................................................ 31 4.3.3 Normal (Damping): Airplanes ........................................ 32 4.3.4 Heading Hold: Airplanes .................................................. 32 4.3.5 Stabilization of the horizon: Airplanes and Multicopters ......................................................................... 32 4.3.6 Stabilize: Multicopters ...................................................... 33 4.3.7 Sport: Multicopters .......................................................... 33 4.3.8 Acro: Multicopters ............................................................. 33 4.3.9 Altitude stabilization: Multicopters ............................... 345. Additional stabilization features .................................................. 35 5.1 Throttle to PID attenuation (TPA) ............................................ 35 5.2. Airspeed compensation ............................................................ 36 5.3 Additional channels ................................................................... 36 5.4 Camera gimbal ............................................................................ 38 5.5 Connecting an external LED strip ............................................ 39 5.6 Sensor data filtering ................................................................... 41 5.7 Sensor calibration ....................................................................... 42 5.8 Vibration analysis ....................................................................... 432ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system36. Advanced properties ............................................................................ 45 6.1 PID control setting ...................................................................... 46 6.2 “Stabilize” mode sett ................................................................... 47 6.3 Acro mode settings ..................................................................... 48 6.4 Filtering ......................................................................................... 49 6.5 Fail-Safe ........................................................................................ 507. Alternative pins configuration .......................................................... 51 7.1 Receiver Outputs ......................................................................... 548. Real time telemetry ................................................................................ 559. Solving the most common problems ............................................... 56 9.1 General ......................................................................................... 56 9.2 Airplane models ....................................................................... 56 9.3 Multicopter models .................................................................... 5810. Receiver update and configuring ................................................... 59 10.1 Update the receiver ..................................................................... 59 10.2 Configuring the receiver with a PC ........................................... 60....ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control systemThe 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. Aerobatic maneuvers will be more accurate and smoother. With the help of several flight modes, which are also suitable for beginner pilots, flying practice will be really easy.The REX A receivers are compatible with all existing 2.4GHz Duplex Tx modules and DC/DS transmitters.You can set them directly via DC/DS transmitters, alternatively you can use the USBa adapter and JETI Studio software (free download at www.jetimodel.com). The receivers provide internal telemetry (e.g., receiver quality, inertial unit status and G-force level). They also process telemetry from external sensors compatible with Duplex EX or EX Bus.In order to stabilize the airplane model effectively in flight, it is appropriate to equip the model with high speed digital servos. Stabilization is also suitable for combustion engine models.REX Receivers with Assist Functions1 IntroductionENGLISHFW. ver. 1.054ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control systemThe JETI model company portfolio contains a diverse offering of electronic modelling equipment like voltage regulators, motor speed controllers, telemetry data display equipment, telemetry sensors and, last but not least, DC/DS transmitters. The JETI model product manfacturing policy is to constantly produce the highest quality product possible. 2 Technical data* xternal ower onnector EPC
Basic Data
REX6A
REX7A
REX10A
REX12A*
Dimensions [mm]
38x25x11
42x28x11
51x28x11
51x28x11
Weight [g]
11
13
16
24
Antenna length [mm]
2x100
2x200
2x200
2x400
# of channel outputs
6
7
10
12
Temperature range [°C]
-10 to +85
-10 to +85
-10 to +85
-10 to +85
Supply voltage [V]
3.5 – 8.4
3.5 – 8.4
3.5 – 8.4
3.5 – 8.4
Average current [mA]
80
80
80
80
Real time transmission of telemetry data
Yes
Yes
Yes
Yes
Programming
Tx - DC/DS
Tx - DC/DS
Tx - DC/DS
Tx - DC/DS
Support satellite receiver Rsat
Yes
Yes
Yes
Yes
Power output [dBm]
15
15
15
15
Receiver sensitivity [dBm]
-106
-106
-106
-106
Frequency [MHz]
2400 - 2483
2400 - 2483
2400 - 2483
2400 - 2483
Built-in sensors
3-axis gyroscope, 3-axis accelerometer
Sensitivity of altitude measurement
0,1m
Range of gyroscope measurement
± 2000°/s
Range of accelerometer measurement
± 16G
Gyroscope/accelerometer sampling rate
6600Hz
5ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system2.1 Properties Up to 16 stabilized airplane channels. Support for different multicopter types – from tricopters to octocopters. Up to 3 adjustable flight modes, options for stabilizing the horizon and altitude. In-flight gain tuning using free channels. Using the latest 3-axis gyroscope and 3-axis accelerometer. Support for LED strip consisting of WS2812 chips. Support for external camera gimbal driven by servos. Intelligent fail-safe. Vibration analysis. Full set-up options with DC/DS transmitters or via PC. Available telemetry: Receiver voltage, signal quality, G-force, attitude orientation. Support of telemetry and up to 3 sensors connected directly.2.2 Important Notices Always use the current firmware in your DC/DS transmitter and receiver. The minimum version of software for transmitters supporting REX A receivers is 4.24. Always check the polarity of the lead wires so that the voltages on the receiver and other electronics are not reversed. Do not expose the receiver to heat and sudden temperature changes that may affect the accuracy of the sensors. Never use a receiver that is visibly damaged. In particular, check the state of the antennas regularly. In no way modify or remove the receiver electronics from the supplied housing. When installing on a combustion engine model, keep in mind 6ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control systemthat 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 receiver are very sensitive and vibrations are an undesirable phenomenon. It is advisable to check the vibration level with the built-in analyzer before flight and to take appropriate measures to reduce vibration (e.g. attach the receiver in the model with a soft double-sided adhesive tape). Do not expose the receiver to direct air flow. Aerodynamic forces may have a strong influence on the sensitive barometric sensor when the model is moving faster. Always use a sufficiently sized power source for the receiver and servos. Keep in mind that with the stabilization switched on, the servos in the airplane model are constantly moving, resulting in increased current consumption and subsequent heating of the components. Any major changes to the settings (especially for the initial configuration) should be done without the propellers fitted. During use, it is recommended to switch on the transmitter first and then the receiver. The transmitter confirms that the receiver is turned on by an acoustic signal. When turning off the system, first switch off the receiver and then the transmitter. REX A receivers do not support Clone mode. This is because the stabilizing receiver should always be the primary receiver in the model. Other receivers, serving as satellites, must not have the stabilization enabled.7ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system3.1 Installation in the modelAlways 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 stabilization and its correct response. It is important that the mounting of the receiver is made in such a way that the vibrations from the model are minimized and that the fixation is guaranteed at the right place. We recommend using a double-sided adhesive tape for this purpose.3 Installation8ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control systemThere 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:
Default - Horizontal
Rotated by 90°
Vertical – on the left
Vertical – on the right
Inverted - Horizontal
Standing – on the left
Standing – on the right
Rotated by 180°
9ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system3.2 Power supplyWhen 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).Never connect two different voltage sources in parallel, even if they seem to have the same parameters. Instead, use an additional circuit, such as DSM10, to separate both sources which become independent.The supply voltage can be applied to the receiver in the following ways: Via throttle channel (when using the speed controller BEC). Using any free or open receiver port. Via the MPX connector included on EPC receivers (Extended Power Connector). For multirotors, use either a BEC output from a single controller or, in case of Opto-type controllers, use an external stabilized source. Never connect voltages from several BEC circuits in parallel.10ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system3.3 OperationWe 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.3.4 BindingWhen using a new receiver or transmitter it is necessary to carry out the binding process between them. Transmission between the receiver and transmitter occurs in fully digital manner, therefore it is necessary to identify and share the addresses of each device communicating on the mutual 2.4GHz frequency band.Procedure:1. Insert the BIND PLUG (included in the receiver packing) into the receiver socket labeled Ext.2. Switch on the receiver – (connect a proper voltage supply to the receiver). Binding of the receiver may now be performed within 60 seconds. After the 60 seconds elapse the receiver returns to setup mode and the binding process must be repeated by starting again from step 1.3. Switch on the transmitter - the transmitter emits an acoustic signal announcing the detection of a new receiver.Binding may be carried out with the aid of the JETIBOX instead of using the BIND PLUG.11ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control systemThe procedure is as follows:1. Connect the JETIBOX with the connecting cable to the Ext. receiver output .2. Switch on the receiver - (connect a proper voltage supply to the receiver).3. The receiver menu appears on the JETIBOX display. Select the „Pairing“ menu item (push the right arrow button once from the main receiver display) and then push the upward button. You now have a period of 60 seconds to bind the receiver. After the 60 seconds elapse the receiver returns to setup mode and the binding process must be repeated by starting again from step 3.If the binding process between receiver and transmitter was unsuccessful, try again. 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 testBy range testing, you verify the correct operation of the transmitter and receiver. You should perform a range test before your first flight of each flight day, or if there are any doubts about the function of the transmitter or receiver. In the range test mode, the transmit power is reduced to 10%. When testing range, place both the model and transmitter at a height of at least 80cm (3ft) from the ground. A properly operating transmitter and receiver should reliably control the model at a distance of at least 50 meters (or 50 yards) in the test 12ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control systemmode. If this is not the case, be sure to check the correct installation of the receiver antennas. If the test is not successful afterwards then do not use the device and contact your dealer or one of our service centers.Setting into Range Test mode:Insert the pairing jumper (BIND PLUG) into the Ext. port of the receiver, turn on the receiver and then the transmitter. Range test mode will be active for as long as the bind plug is inserted in the Ext. port. Alternatively, you can run the range test in the DC/DS transmitter via the System – Servo & Range Test menu.13ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system4.1 AirplaneFrom production the REX Assist receivers behave as standard receivers and stabilization is not active by default. This can be used to set up an airplane model - the initial procedure is similar:1. Place the receiver in the model according to the “Installation in the model” chapter.2. Create a new model in the transmitter as usual. The individual channels of the transmitter should correspond with the outputs on the receiver. If you plan to use additional channels to tune the stabilization gain or to switch flight modes, this is the moment you should create them. By doing that you won’t have to go back to your channel settings while configuring the receiver via Quick Wizard menu. More information about the auxiliary channels can be found in the Additional channels section. 3. Pair the transmitter with the receiver.4. For the model, set its subtrims, dual rates and expos according to the recommended values. Do not set up advanced mixes or change the servo path using servo balancer.5. Now go to the receiver configuration – either through the DC/DS menu (Model -> Device Explorer) or via your PC (see a)chapter Configuring the Receiver with PC).6.b) Run the stabilization setup wizard (Configuration -> Quick Wizard ) . On the first screen, enter the “Airplane Assist” option and go to the next page with the “Next” link.c) 4 Quick Setup14ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system7. Specify the model type so that its flight characteristics best match one of the options . Several types of gliders, d), e)aerobatic models and others are available. Each model type includes preconfigured and optimized stabilization presets so that the first flights are enjoyable and the additional settings are kept to a minimum.8. In the next step, select the receiver position in the model so that the displayed graphics matches real situation. A total of 8 options are f)available (see chapter Installation the model). Illustration indicates flight direction.a)b)c)d)e)15ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system9. Now check for additional features g):  Use airspeed correction – if the model is able to move at a large range of speeds, it is advisable to supplement it with the MSPEED sensor or MGPS for measuring flight speeds. By activating this field, the receiver will take into account the current speed while performing stabilization.  Use camera gimbal - by checking, you enable the function of an external servo control for camera gimbal.  All servos digital - This option specifies the servo output period. If all the servos are digital in the model, the output period will be automatically set to 7.5ms. Otherwise, it will be 17.5ms.10. Assign the individual channels for stabilization so that the receiver learns neutral positions and throws of individual servos . h)The model can now be placed arbitrarily because at this point you only calibrate the control functions. Proceed step by step according to the wizard and calibrate only the axes that will be f)g)h)16ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control systemused during stabilization. Check the correct response to the controls by looking at values displayed in the “Controls” row. If the servos in the model are not moving, it is ok at this point - the receiver will not allow servo outputs until the configurati-on is completed. 11.f) Assign a channel for switching flight stabilization modes . This channel should be controlled by a three- position switch, so that all three flight modes are available. In position the stabilization is 1,disabled by default. Switching to position (center) activates the 2“Normal” mode. Switching to position activates the "Heading 3Hold" mode. Note: First add a three-position switch to your DC/DS transmitter as a new function in the Model – Functions Assignment menu. Then assign this option to a free channel in the Model – Servo Assignment menu. Subsequently, this three-position switch can be used here in the receiver setup wizard.12. If you have selected the “Use gimbal” option in the previous steps, assign the individual channels to the gimbal control. You can skip this point and configure the camera gimbal later in the Configuration -> Channel Assignment -> Gimbal channels.13.j) Finish the wizard and application settings . When you run the i)17ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system“Appl y wizard and finish” command, you s to re the parameters in the receiver and the stabilization is reset to the mode according to data you’ve entered. Attention: At this point, the settings of individual servo outputs, flight mode configurati-on, and the PID control gains will be reset.14. Before each flight, place the model on the ground and hold it stable during the gyroscope initializati-on. Once the initialization is completed, it is possible to move servos.15. Check for correct input control response and stabilization function when moving in each axis. For example, if you rotate the model to the left, the control surfaces should tend to move in the opposite direction.16. Perform the first flight either with stabilization disabled (manual mode) or in “Normal” mode. If the model does not fly straight, trim it and then land. Re-assign the primary channels. Continue to optimize the settings so that the flight characteris-tics of the model match your preferences.j)k)18ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch

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computer radio control system4.1.1 Airplane model settings optimizationIn the “Airplane Settings” menu in the REX A configuration you can fine- tune the stabilization gains for individual axes.Gain - This parameter determines the proportional rate of model stabilizati-on in flight. If the model is insufficiently stabilized, for example in wind gusts, increase the gain each time by 20% until the model starts to oscillate. Consequently, reduce your value by 20%. Try the new settings at different flight speeds and make sure that even at high speeds there are no oscillations.Heading - Determines how intensively the model keeps its orientation and direction in the “Heading Hold” mode. In “Normal” mode, this parameter is not used. You can test the function of heading hold function, for example, when you are in knife edge flight.3D Aerobatic Factor (Stick Priority) - Determines how the stabilization gain decreases depending on how the control stick moves from the center position. For instance, a 60% aileron stick priority means that at maximum left or right, the aileron gain will be reduced to 40% and the stick direct position will be applied from 60%.19ENJETI model s.r.o.Lomená 1530, 742 58 PříborCzech Republic - EUwww.jetimodel.comwww.jetimodel.de[email protected]Duplex-System EX:• Transmitter modules • Receivers • Telemetric sensors • Compatible accessories • Display units Serial number:Carefully save this serial number!www.modellmarkt24.ch