ZHEJIANG DAHUA VISION TECHNOLOGY CO., LTD. Dahua or the third party may reserve the right of the product described in this user’s manual. Without the prior written approval of the corresponding party, any person cannot (including but not limited to) copy, distribute, amend, excerpt, reverse compile, disassemble, decode, reverse engineering, rent, transfer or sublicense the software.
Preface Document Overview The manual is to comprehensively introduce function features, structure parameters, installation, dismounting and flight guide etc. of the product. Applied Model X650 Application Object End users Reading Guide Chapter Chapter Main Content Name Product It is to introduce the function features and application scenarios of Overview the product.
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chapter; the operation sequence can't be reversed. Upgrade It is to introduce upgrade methods and points of attention. Appendix 1 It is to introduce the technical parameters. Appendix 2 It is to introduce the indicator definition of the aircraft. Appendix 3 It is to introduce the matching method among the components.
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Symbol Definition The following symbol may appear in the document. Please refer to the table below for the respective definition. Symbol Note It indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. It indicates a moderate or low level of potential danger which, if not avoided, could result in minor or moderate injury.
Important Safeguards and Warnings The following description is the correct application method of the device. Please read the manually carefully before use, in order to prevent danger and property loss. Strictly conform to the manual during application and keep it properly after reading. Danger ...
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the junction extruded from the device. Battery Points of Attention It has to use the exclusive power adapter provided by Dahua Technology to charge the device. Otherwise, it may damage the battery or lead to other unpredictable consequences.
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Please do not use undesignated battery to the device. Please do not dismantle and destroy the battery without permission; water is not allowed to enter the device; man-made damages are not covered by warranty. Please do not throw the battery into fire or expose it to high-temperature environment. ...
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particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: —Reorient or relocate the receiving antenna.
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regions. For detailed information, see the paper User's Manual, CD-ROM, QR code or our official website. If there is inconsistency between paper User's Manual and the electronic version, the electronic version shall prevail. All the designs and software are subject to change without prior written notice. The product ...
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Appendix 4.2 FAQ and Solutions of Remote Control ............... 87 Appendix 4.3 FAQ and Solutions of Airborne Device ............... 87 Appendix 4.4 FAQ and Solutions of Charger ..................87...
Product Introduction Overview This product is a quadrotor drone designed for public security, transportation, firefighting, border defense, agriculture, forest and energy source fields. It provides integrated solutions of aerial video surveillance. This product consists of aircraft, airborne device and remote control. ...
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Built-in GPS system ensures that positioning is accurate and real-time. Wireless Transmission Aircraft has 4 antennas. Connect the remote control and image transmission device to send and receive radio wave signals. The remote control has 3 antennas. Connect the aircraft to send and receive radio wave ...
Structure This product mainly consists of aircraft, airborne device and remote control. This chapter introduces the structures of these three components. The detailed operations will be introduced in Chapter 错误!未找到引用源。错误!未找到引用源。. All figures listed below and all dimensions listed here are for reference only. The figure and the dimensions may be slightly different from the user data due to measurement position, measurement accuracy and position indication.
1.3.2 Structural Component Figure 0-3 Name Function High-speed revolution to turn the motor power to propulsive force. There are two pairs of propellers with Propeller different structures. Please adjust the installation positions according to the actual situation. Fold or unfold. Fold or unfold.
Name Function Landing gear Fixed under the fuselage, support the aircraft. Arm wrench It is used to fold the arm. Motor Bring along propeller revolution. Electronic speed Adopt sine wave driving and boast good acceleration and controller deceleration performance. Table 0-1 Airborne Device This part takes visible light PTZ camera and thermal PTZ camera as an example, and ...
1.4.2 Structural Component Figure 0-6 Name Function Shock absorber ball Reduce PTZ camera vibration during the flight, to get clearer Shock absorber board video. Installation screw Secure the PTZ camera on the aircraft. Yaw motor Control rotation angle of yaw axis of the camera. Yaw rotation arm Roll motor Control rotation angle of roll axis of the camera.
Figure 0-8 1.5.2 Structural Component Front panel, side panel and rear panel of the remote control are shown in Figure 0-9, Figure 0-10 and Figure 0-11.
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Figure 0-9 Name Function Establish the remote control relationship with the aircraft to Antenna receive images. One silver antenna is installed in the middle, while two yellow antennas are installed at both sides. Hanger Fix the hanger belt. Left control stick Control the aircraft flight status.
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Figure 0-10 Name Function PTZ course scroll Control horizontal shooting angle of camera lens. wheel Snapshot Press this button shortly to snapshot present image. 3-level lever to select flight mode. Upper level: intelligent flight mode. The aircraft flights automatically according to the specified course. Middle level: flight at the specified height.
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Name Function 2-level lever. It is to select PTZ mode. Upper level: Course following mode. The PTZ camera angle changes with aircraft flight direction. PTZ mode lever Lower level: Course locking mode. No matter what the aircraft flight angles are, the PTZ camera always faces the same degree to shoot.
Table 0-5 1.5.3 Buttons Refer to “错误!未找到引用源。错误!未找到引用源。” for the joystick and flight mode lever button information. 1.5.3.1 Scroll Wheel Besides “PTZ course scroll wheel” and “PTZ pitch scroll wheel”, at “Status Bar > Quick Operation > PTZ”, control “PTZ Center” and “PTZ 90°” by reference to “错误!未找到引用源。 错 误!未找到引用源。”.
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Figure 0-14 2-level lever: Upper level: Course following mode. Shooting angle of PTZ camera changes with aircraft flight direction. Lower level: Course locking mode. No matter what the aircraft flight angles are, the PTZ camera always faces the same degree to shoot. Lever returns to the center: start from any position, move the lever for three times ...
1.5.4 Operation Interface After turning on with the remote control, enter main interface. It consists of the following function modules, as shown in Figure 0-16. Figure 0-16 Slide up at any position on the main interface to hide the setting menu, function bar and state bar.
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Figure 0-17 Icon Name Function Click this icon to enter setting menu. Please refer to “1 Settings Setting” for details. Display present PTZ mode (PTZ locking or PTZ following mode). : When the PTZ lever is at the lower level, ...
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Icon Name Function options. Please refer to “1.11.5 Set Quick Operation” for details. Table 0-7 3.3.4.1.1 Setting Click to enter setting interface, as shown in Table 0-8. Level 1 Menu Level 2 Menu Level 3 Menu Function Provide two modes. Control Please refer to “1.15.4 Manual Flight joystick mode...
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Level 1 Menu Level 2 Menu Level 3 Menu Function brightness, contrast, saturation, Image sharpness and gamma value. Advanced Please refer to “1.18.4.3 Image Settings” settings for details. Aircraft Check firmware status and upgrade. Please refer to “1.19 Firmware Update” firmware upgrade for details.
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Figure 0-18 3.3.2.1.2 Flight State List Click the icon to display drone state list, as shown in Figure 0-19. Figure 0-19 View drone state info in a real-time way. 3.3.2.1.3 Quick Operation Realize quick setting of dashboard, PTZ, image transfer and others. Please refer to “1.11.5 Set Quick Operation”...
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Figure 0-20 1.5.4.2 State Display Bar Figure 0-21 Icon Name Function Aircraft direction Blue triangle: it indicates the aircraft camera lens direction on the geographic position. direction Display remaining flight time of the aircraft. It displays N/A when the aircraft is not connected.
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Icon Name Function Horizontal forward and backward speed of Horizontal speed the aircraft. It displays N/A when the aircraft is not connected. Vertical ascending and descending speed Vertical speed of the aircraft. It displays N/A when the aircraft is not connected. Relative altitude from the takeoff position.
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1.5.4.3.2 Map Preview Mode Figure 0-23 In this mode, the image transmitted by the camera to the remote control is displayed in a small window at the top left corner of the preview interface. In this mode, the large window displays aircraft position on the map. ...
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1.5.4.4.2 Locking Mode Click the icon to select locking mode of the aircraft on the popped up dialog box, as shown in Figure 0-25. Figure 0-25...
Flight Preparation This chapter elaborates complete flow before the aircraft is unlocked and takes off. Please select operation according to the actual situation after the first flight is over, if it is not the used for the first time. Please operate by strictly conforming to the steps described in this chapter;...
Please refer to “1.8 Charging” when the battery is low. Please implement the sebsequent steps after charging. 4.2.1 Aircraft 1.7.1.1 Aircraft Battery Check Short press the aircraft battery indicator button once, and then long press it for 3s, and check the state of indicator lights, as shown in Figure 0-2.
1.7.2 Remote Control 1.7.2.1 Remote Control Battery Check Move the power switch to the arrow location; view the number of indicator lights which are on. Figure 0-3 Figure 0-4 At normal temperature, the remaining power shall be ≥2. Remaining power shall be ≥3 when the temperature is lower than -10℃. ...
Charging It doesn't need to implement the following chapter if the remaining power is enough. 1.8.1 Aircraft Battery Charging During charging of power battery, charging is completed when the charger displays “FULL” and beeps. Don’t take down batteries before charging is completed. The entire charging period (from 0 to full) is about 1.5 hours.
Figure 0-6 Step 8 After charging is completed, disconnect it from the power socket, and then disconnect all other cables. 1.8.2 Remote Control Charging The entire charging period (from 0 to full) needs approximately 3.5 hours. Please charge the remote control when its power is off. Step 1 Connect DC: connect the remote control and power adapter with a charging cable.
Please implement demounting step first and then connection step when the PTZ camera needs to be replaced. It only needs to implement demounting step when the aircraft flies directly without PTZ camera. 1.9.1 Demount PTZ Camera Step 1 Loosen 4 mounting screws, as shown in Figure 0-9.
1.10 Prepare Aircraft 1.10.1 Unfold Arm Unfold the arm to horizontal position. When you hear “clicking” sound, it means that the arm has been fixed, as shown in Figure 0-11. The subsequent steps can be implemented only when the arm is fixed. Please contact our company if the arm is loose.
1.10.3 Remove Sheath Remove sheath from the propellers, as shown in Figure 0-13. Figure 0-13 1.10.4 Open Propeller After removing the sheath, unfold the propeller manually, as shown in Figure 0-14. Figure 0-14 1.10.5 Install and Enable Aircraft Battery Step 1 Pick up the battery and push it into the battery compartment horizontally, as shown in Figure 0-15.
Figure 0-15 When you hear “clicking” sound, the battery is put into the battery compartment Step 2 completely, so the installation is completed, as shown in Figure 0-16. Figure 0-16 Step 3 Short press it once and long press it for 3s. The battery is power-on, and the aircraft enters self-inspection status.
Figure 0-17 Make the metal surface of micro SD card face downward and insert it into the micro SD card slot of the remote control side panel horizontally. 1.11.2 Open Antenna Open the antenna of remote control to proper location, as shown in Figure 0-18. Figure 0-18 1.11.3 Enable Remote Control Power Please skip the chapter if the power is not turned off after checking remaining battery.
Figure 0-19 1.11.4 Confirm Remote Control Mode It is mode 2 by default. Please set in “Settings > RC Settings > Joystick Mode” to switch mode, as shown in Figure 0-20. Figure 0-20 Please refer to “1.15.4 Manual Flight Control” for remote control mode and its corresponding relations.
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Figure 0-21 1.11.5.2 PTZ Set the PTZ, such as PTZ position and throwing. Click “PTZ”, and the system enters “PTZ” interface, as shown in Figure 0-22. Step 1...
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Figure 0-22 Step 2 Set parameters according to actual needs. Please refer to Table 0-3 for details. Parameter Note PTZ Mode View present mode of PTZ. Set PTZ position, including PTZ 90 degrees and PTZ center. PTZ Position PTZ 90 degrees: the camera is vertically downward. ...
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Figure 0-23 Step 2 Select resolution ratio, frame rate and maximum bandwidth of preview image according to actual needs. 1.11.5.4 Other Set the flight task, flight path and stop beep here. 1.11.5.4.1 Fly Task Set the flight task of remote control according to actual needs, including flight path and flight time.
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Figure 0-24 Step 2 Configure flight task according to actual needs. Append: click this icon to enter waypoint setting interface, set waypoint flight task according to actual needs and save it. Download: click this icon to download present saved flight path automatically. ...
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Figure 0-25 Click “Edit”. Step 2 Select the flight path which shall be deleted and saved according to actual needs, as shown in Figure 0-26. Figure 0-26 Click “Complete” to complete flight data setting. Step 3 Click “Select All” to operate all flight data together.
1.12 Enable Aircraft Power After power on, when the remote control doesn’t require other operations, please always keep the aircraft horizontal and static; otherwise, it may result in initialization failure. Insert intelligent battery of the aircraft, so the aircraft is power-on and indicator light indicates present battery electricity, as shown in Figure 0-27.
and the aircraft may even explode after calibration. After calibration, view “1.11.5.1 Dashboard“, and turn corresponding buttons to confirm if calibration is successful. After successful calibration, each parameter is about 1514. Turning the endpoint, maximum value is 19XX while minimum value is 10XX. The remote control can be normally used about 30s after calibration.
Figure 0-29 Place the aircraft on a flat surface, and click “Start Calibration”. The remote control will prompt “Calibration Success” if it is successfully calibrated. The remote control will prompt “Calibration Failure” if it fails to calibrate. Click “Retry” till it ...
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Possible Reasons The use position has changed a lot, which means the geographical location is quite far away from the last geographical location where the aircraft is used, causing big change to geomagnetic field. There is another intensive magnetic field or abrupt change in the environment, affecting geomagnetic field.
Figure 0-31 Step 4 Keep the aircraft vertical and rotate it for 360° vertically, as shown in Figure 0-32. Figure 0-32 It will prompt geomagnetic calibration success if it is successfully calibrated. It will prompt geomagnetic calibration failure if it fails to calibrate. Repeat Step 2, 3 and 4 to calibrate again.
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no signal. Possible Reasons The flying environment is not wide open enough, which is severely blocked. There is some other interference around the surroundings. Solutions Move the aircraft to a wider area and wait for 30s.
Enable Flight This chapter will elaborate the complete flow of formal takeoff and landing of the aircraft. Please stay away from the rotating propellers or motor, to avoid personal injury. For your personal and property safety, please make sure to check the following items carefully before enabling flight.
Figure 0-2 Three-level driving lever: Upper level: Intelligent flight mode. The aircraft will fly automatically according to the pre-set flight route. Medium level: It is the fixed height flight mode in manual flight mode. The aircraft will maintain the current flight height when the throttle joystick is in the middle. ...
Figure 0-4 If there is obvious difference about rotating speed of the propellers, move the left joystick to lower left and meanwhile move the right joystick to lower right (or move the left joystick to lower right, and meanwhile move the right joystick to lower left), and then keep the status till the propellers stop rotating.
Figure 0-5 1.15.4 Manual Flight Control Set remote control mode and control flight direction of the aircraft. Figure 0-6 The joystick presets two remote control modes. It is mode 2 by default. Please modify in “Settings > Remote Control Settings > Joystick Mode” to switch to mode 1.
make left and right turn horizontally. Vertical direction of right joystick is throttle joystick, which controls the aircraft to ascend and descend. Horizontal direction of right joystick is rolling joystick, which controls the aircraft to move left and right horizontally. Figure 0-7 ...
Figure 0-9 1.15.6 Manual Locking Move the left joystick to lower left and move the right joystick to lower right at the same time (or move the left joystick to lower right and move the right joystick to lower left at the same time). Figure 0-10...
1.16 Intelligent Mode 1.16.1 Intelligent Flight Mode Intelligent flight mode includes waypoints and circle around point of interest. Waypoints flight: Set waypoint flight mission according to requirements. Move the flight mode joystick at right rear of remote control to intelligent mode after the aircraft takes off, select proper flight mission and click “Start Mission”.
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4.3.1.1 Waypoints Select “Waypoints”. Step 1 The system displays “Waypoints” interface, as shown in Figure 0-12. Check total route length, estimated flight time and set “Cycle Flight” at the bottom of the interface. Figure 0-12 Step 2 Click the map and the position can be set as a waypoint; several waypoints can be connected together and form a route.
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Figure 0-13 Step 4 Set waypoint parameters. Please refer to Table 0-1 for more details. Parameter Note Altitude Set flight altitude of waypoint. Speed Set flight speed of waypoint Head orientation Set head orientation of waypoint according to requirement during flight. Residence time Set hovering time after the aircraft reaches a waypoint.
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in the list. Click to enter flight mission interface. There are three operations: Add mission: Click the icon to enter waypoint setting interface, set waypoint flight mission and save it according to actual requirements. Download mission: Click the icon to automatically download the currently saved ...
Figure 0-15 Step 4 Set the parameters of interest point. Please refer to Table 0-2 for more details. Parameter Note Altitude Set flight altitude of interest point. Speed Set flight speed of interest point. Cycle radius Set flight radius of aircraft flying around interest point. Select the flight direction of aircraft flying around interest point, clockwise Cycle mode optional.
Figure 0-16 There are two types of intelligent locking modes, namely course lock and return lock. Course lock: Click it to lock the present head direction as its forward direction. During the following flight process, the aircraft course has nothing to do with the head direction;...
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Figure 0-17 1.16.3.2 Auto RTH and Landing The landing under the condition of low battery or in the uncontrollable situation has been introduced in other chapters; this chapter will only introduce the landing modes in other situations. Short press RTH button on the front panel of the remote control, and the aircraft will return Home.
One-key landing doesn’t return Home, but the aircraft will land at the current position immediately. 1.17 Intelligent Protection Mechanism 1.17.1 Low Battery There are totally three prompts of aircraft low battery for the remote control, and each prompt is more serious than the previous one. Level-one low battery, remote control prompts message: “Low Voltage Alarm”, along with ...
Figure 0-20 1.18.2 Flight Control Settings 1.18.2.1 Fence Settings Select “Settings > Flight Control Settings > Fence Settings”. The system displays “Fence Settings” interface, as shown in Figure 0-21. Figure 0-21...
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5.5.2.1.1 Fence Type Draw electronic fence area. Select “Settings > Flight Control Settings > Fence Settings > Fence Type”, as shown in Figure 0-22. Figure 0-22 ALT (Limited altitude): limit the max. flight altitude of the aircraft, but there is no limit in ...
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Figure 0-23 1.18.2.1.2 Fence Action Select “Settings > Flight Control Settings > Fence Settings > Fence Action”, as shown in Figure 0-24. Figure 0-24 Notify: The aircraft hovers in the air when electronic fence is triggered. Preview interface of remote control gives a prompt, along with buzzing.
prompt, along with buzzing. Meanwhile, the aircraft returns automatically. 1.18.2.1.3 Other Settings Select “Settings > Flight Control Settings > Fence Settings”. Set radius and altitude. Set trigger distance. For example, when the fence type is set as radius + altitude, the radius is set as A meters and altitude is set as B meters, and if the trigger distance is set as C meters, then it will trigger RTH or landing when the aircraft is (A-C) meters away from the HOME point horizontally or flight altitude exceeds (B-C) meters;...
The system displays “Image Transmission Settings” interface, as shown in Figure 0-27. Figure 0-27 Step 3 Select one option. Icon at the end of selected line becomes green and checked, which makes it valid immediately. 1.18.4 Camera Settings 1.18.4.1 Photo Settings Set resolution, frame rate and max.
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Figure 0-28 Step 2 Select one line. Icon at the end of selected line becomes green and checked, which makes it valid immediately. 1.18.4.2 Video Settings Select to enable “Camera Auto-take Video When Unlock” or not; select the resolution, frame rate, stream and coding format of PTZ camera.
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Figure 0-29 Select the switch behind “Camera Auto-take Video When Unlock”. When the switch Step 2 turns green and ticked, it means that the function is enabled. Select “Resolution/FPS/KBps”, click a line, and icon at the end of selected parameter Step 3 line becomes green and checked, which makes it valid immediately.
among reference stream value. H.264 Main: Main Profile mode. H.264 Baseline: Baseline Profile mode. H.264 High: High Profile mode. H.265: Main Profile mode. 1.18.4.3 Image Settings Set the brightness, contrast, saturation, sharpness and gamma value of the preview image of PTZ camera.
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1.18.5.1 Other Settings 1.18.5.1.1 Network Settings Network access of remote control includes Wi-Fi, mobile hotspot. Select “Settings > General Settings > Other Settings > Network Settings”. Step 1 The system displays “Network Settings” interface, as shown in Figure 0-32. Figure 0-32 Select “Network Setting”.
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Figure 0-33 1.18.5.1.3 Brightness Set the overall display brightness of the remote control touch screen. Select “Settings > General Settings > Other Settings > Brightness”. Step 1 The system displays “Brightness” interface, as shown in Figure 0-34. Figure 0-34 Step 2 Drag the adjustment bar to set overall brightness of remote control.
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1.18.5.1.4 Date and time Set the date, time and time zone displayed on the remote control. Select “Settings > General Settings > Other Settings > Date and Time”. Step 1 The system displays “Date and Time” interface, as shown in Figure 0-35. Figure 0-35 Step 2 Set parameters according to actual needs.
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Figure 0-36 Step 2 According to actual needs, select English or Chinese. 1.18.5.2 About View hardware device model and version info. Select “Settings > General Settings > About” to enter “About” interface, as shown in Figure 0-37. Figure 0-37...
End Flight This chapter elaborates the operation steps after aircraft landing. Please operate according to the following flows to make sure normal application for the next time. Some of the operations are not indispensable. Please select according to the actual situation.
means that remote control power has been turned off when the indicator light of remote control front panel is off. Figure 0-3 Dismantle Air-borne Device Step 1 Loosen 4 mounting screws, as shown in Figure 0-4. Figure 0-4 Step 2 Dismantle the PTZ camera.
Figure 0-6 Step 3 Hold the arm with hand, move the arm wrench, fold the arm downwards and keep it close to landing gear, as shown in Figure 0-7. Figure 0-7 Copy Video of Camera Micro SD Card...
Figure 0-8 Step 1 Open micro SD card plug with hands. Step 2 Slightly press micro SD card and it will pop out. Pull out the micro SD card. Step 3 Insert the micro SD card into the card reader, and connect the card reader to computer. Copy the micro SD card video into the computer via card reader and save it.
Upgrade and Update This chapter elaborates upgrade methods of the device. 1.19 Firmware Update The aircraft and remote control have to be enabled and connected during firmware update, in order to pair them successfully. Don’t upgrade the firmware during flight! Update flight control, transmitting and receiving firmware of the aircraft, as well as transmitting and receiving firmware of the remote control.
Figure 0-2 It doesn't need to update when it displays the version number, and it means that the current APP is the latest version. Update is available when it displays “Update Now”. Select “Update Now”. Step 3 Update automatically and display update progress. After successful update, version number in the above figure will be the same as update software.
Appendix 1 Main Technical Parameters Parameter Item Parameter Value Model Navigator X650 System Operating temperature -20℃~60° C Environment Operating humidity Operating humidity is 95%, non-condensation. Adaptability Wheel base 650mm Aircraft type 4 rotor wings Mechanical features of arm Foldable Rack weight (except battery...
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Parameter Item Parameter Value Model Navigator X650 Installation mechanical Quick mount and demount feature Two working modes: Course follow mode (relative position of aircraft and PTZ doesn’t change) Course lock mode (the angle between PTZ and the ground doesn’t change)
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Parameter Item Parameter Value Model Navigator X650 Parameter setting Auto planning of tour mission Pattern template import/export Auto takeoff/landing Real-time switch of video and map Smart flight mode: Software function Course lock RTH lock ...
Appendix 2 Aircraft State Indicator The aircraft status indicator over the power switch is turned on after the aircraft is enabled. Different colors and statuses mean differently. Please refer to the Appendix Table 2-1. Please do understand the contents listed in the table below before flight, which is to help you quickly understand the aircraft status or positioning problem during flight.
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Phase Indicator color and status Implication Operation remote control for more than 3s Level 1 low battery … ●●● ●●● ●●● warning Level 2 low battery … ●●●● ●●●● ●●●● warning Image transmission … ●●● ●●● ●●● disconnected Disconnected from …...
Appendix 3 System Pairing The aircraft and remote control have been paired before factory delivery. Abnormity It needs to pair again when the remote control relation between remote control and aircraft loses effect. Specific Operations Step 1 With pair pin, long press the pair button of the aircraft (on the right of power switch) for Appendix Figure 3-1 Select “Settings >...
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Appendix Figure 3-2 Click “Start Pair” on the remote control, and the system starts pairing automatically. Step 3 It means pairing is successful when the remote control prompts “Success”. Step 4 If the interface prompts pairing failure, click “Retry” and repeat above step 1-4. Step 5...
Appendix 4 Appendix 4.1 FAQ and Solutions of Aircraft Question: Images are subject to water ripple and jitter in case of gale. Solution: Prevent PTZ from facing the gale directly. Appendix 4.2 FAQ and Solutions of Remote Control Question: Response speed of remote control touch screen becomes slow and has other abnormities.
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Solution: Please inspect whether connection between AC power line and charger, or connection between charger and battery is abnormal or not. Please contact the manufacturer if it fails to be solved. ZHEJIANG DAHUA VISION TECHNOLOGY CO., LTD. Address: No. 1199, Bin’an Road, Binjiang District, Hangzhou, P.R. China Postcode: 310053...