User Manual for 10W PA Wireless video data RC link Vcan1818
wireless video link User Manual
Table of contents
3.1. Air system installation 8
3.1.4. Connect flight controller (remote control and data transmission) 10
3.2. Ground end module installation 10
3.2.1. antenna installation 10
3.2.2. power supply installation 11
4.5. Downlink mode configuration 22
4.6. Data transmission settings 24
4.7. Remote control protocol setting 24
4.8. frequency configuration 25
5.1. Detailed system application 31
5.2. remote control function 31
5.2.1. FRSKY remote control configuration 32
5.2.2. Futaba remote control configuration 32
6.2. Remote control channel and remote control 35
6.5. Device binding operation 38
6.6. Computer Windows Firewall 39
6.7. Computer IP address setting 40
6.8. Definition of data transmission and remote control interface 42
Packing Item Details
Air end & Ground end
Antenna & Feeder for Air Unit× 2
(Air terminal antenna)
(Air terminal feeder)
Ground end antenna & feeder ×2
(ground terminal antenna)
(The ground end feeder is used when connecting a high-gain N-head antenna)
Air end cable
| No. | Interface |
| 1,2,3 | RJ45 Ethernet port, connected to the network camera, video input to the air terminal. |
| 4,5 | S.BUS interface, as shown in the figure above, the first core of the DuPont head from the left is the S.BUS signal, and the third core is the ground. |
| 6,7 | The digital transmission serial port is located as shown in the figure above. From the left, the second core of the GH1.25 connector is for receiving, the third is for sending, and the sixth is for grounding. There are two TTL signals by default, RS232 and RS422 are optional. |
| 8 | PPM interface, as shown in the figure above, the first core of the DuPont head from the left is the PPM signal, and the third core is the ground. |
| 9 | Power supply, DC18~26V power supply |
Ground cable
| No. | Interface |
| 1,2,3 | RJ45 Ethernet port, connected to the ground station, video output to the ground station. |
| 4,5 | S.BUS interface, as shown in the figure above, from the left, the first core of DuPont head is S.BUS signal, the second core is 5V power supply, and the third core is grounding. |
| 6,7 | Serial port to USB interface, default TTL to USB. Connect to ground station. |
| 8 | PPM interface |
| 9 | Power supply, DC18~26V power supply |
- Product Description
- Technical Parameters
| parameter | index |
| working frequency | 1370~1450MHz |
| bandwidth | 10MHz |
| Maximum emission energy | 40dBm |
| Modulation | OFDM |
| Constellation | BPSK、QPSK、16QAM |
| FEC | LDPC (1/2、2/3、3/4、5/6) |
| duplex mode | TDD |
| Downlink throughput | 2Mbps-8Mbps |
| Uplink throughput | 400kbps |
| encryption | AES256 |
| interface | Ethernet port, serial port (UART), PPM/S.BUS |
| power consumption | 38W (air end)/16W (ground end) |
| size | 176*139.3*27.8mm (air terminal & ground terminal) |
| weight | 668g |
| Rated voltage/current | DC24V/1.2A (or 6S lithium battery) |
| Operating temperature | -30°C ~55°C |
| antenna | omnidirectional, sectoral |
- Air port
- J30J interface
Connect the provided air end cable to the J30J-37 pin interface to realize power supply, image transmission, data transmission and remote control functions.
- USB interface
USB Type-C interface, connect this interface to the ground station through a USB data cable, and run the wireless video link device management client.
- LED status indicator
The LED light is always on, indicating that the uplink is connected, and very bright, indicating that the uplink is not connected normally (this function is invalid for the air terminal). The positions shown in the figure, from left to right, are the power indicator (1), the Ethernet connection indicator (2~4), and the uplink and downlink status indicators (5~6).
- bind button
Long press the button to put the device into the binding state. The device has been bound before leaving the factory, and customers do not need to bind again.
- RF interface
Install the antenna to the RF interface.
- Ground interface
- J30J interface
Connect the provided ground end cable to the J30J-37 pin interface to realize power supply, image transmission, data transmission and remote control functions.
- USB interface
USB Type-C interface, connect this interface to the ground station through a USB data cable, and run the wireless video link device management client.
- LED status indicator
The LED light is always on, indicating that the uplink is connected, and very bright, indicating that the uplink is not connected normally (this function is invalid for the air terminal). The positions shown in the figure, from left to right, are the power indicator (1), the Ethernet connection indicator (2~4), and the uplink and downlink status indicators (5~6).
- bind button
Long press the button to put the device into binding state. The device has been bound before leaving the factory, and customers do not need to bind again.
- RF interface
Install the antenna to the RF interface.
- Installation Notes
- Air system installation
- antenna installation
- Air system installation
- Air end module
Install the antennas of the air unit to the RF ports respectively.
Notice:
- To avoid damage to the module, please install the antenna before powering on.
- When the air end is integrated on the drone, please avoid the installation position of the antenna being blocked by the drone components.
- Please ensure that the antenna connector is perpendicular to the module when the antenna is installed.
- power connection
Insert the cable into the J30J connector on the air end, and connect the other end to the battery or other power output ports of the drone. 24V DC is recommended.
Notice:
- To avoid damage to the module, please install the antenna before powering on.
- Power supply recommendation:DC24V/1.2A (or 6S lithium battery)。
- connect camera
Connect the camera’s network port video output interface to the module’s air port network port.
- Connect flight controller (remote control and data transmission)
Data transmission connection: The 6PIN interface is connected to the serial port (UART) of the air terminal module, and the other end is connected to the data transmission interface of the flight controller. The digital baud rate is configurable.
Remote control connection: The 6PIN interface is connected to the remote control interface of the air terminal module, and the other end is connected to the remote control interface of the flight controller. Support PPM and S.bus protocols.
Notice:
- Different versions of flight controllers may have different interface types, and corresponding cables need to be used.
- Ground end module installation
- antenna installation
Correctly connect the ground end antenna to the RF interface through the RF connection cable to ensure that the interface is tightly installed.
Notice:
- To avoid damage to the module, please install the antenna correctly before powering on.
- Make sure the antenna is perpendicular to the module, and tighten the connectors at both ends of the connecting cable, but not too tight to avoid damaging the antenna.
- When the module is working, the antenna needs to be perpendicular to the module.
- power supply installation
Connect to the power interface on the ground end, and connect the battery or other power input devices to the other end. It is recommended to use 24V DC, 6S lithium battery.
Notice:
- To avoid damage to the module, please install the antenna before powering on.
- It is recommended to use 24V DC, 6S lithium battery for power supply.
- Digital connection
Connect the serial port of the ground end, and connect the other end to the ground station with USB, which can realize the data transmission communication function between the ground end module and the ground station.
Notice:
- Please confirm that the ground station baud rate and image transmission baud rate are configured correctly.
- Please confirm that the wire sequence of the data transmission cable matches the interface definition of the wireless video link module.
- Connect the remote
Use the PPM protocol: the 6PIN interface is connected to the remote control interface of the ground terminal, and the other end is connected to the trainer interface of the remote control, and the remote control inputs the remote control signal to the ground terminal module.
Use the S.BUS protocol: the 6PIN interface is connected to the remote control interface on the ground side, and the other end is connected to the S.BUS receiver, and the S.BUS receiver communicates with the remote control wirelessly.
Notice:
- Please make sure that the remote controller is set to trainer mode and the corresponding PPM or S.BUS working mode.
- The line sequence matches the interface definition of the wireless video link module.
- If the S.BUS receiver is used, the working frequency of the receiver and the wireless video link module must have a certain degree of isolation. For example, a 2.4G remote control cannot be used with a 2.4G wireless video link device at the same time.
- Create video output
The ground terminal outputs video to the ground station or notebook through the network port.
Notice:
- Please make sure that the IP address of the ground station or notebook is configured correctly, and the network cable is connected correctly.
- System Diagram
- Connect the antenna to the RF interface of the air end module.
- Connect the video output interface of the camera’s network port to the network port of the air system.
- Connect the remote control interface of the air terminal module to the remote control interface of the flight controller.
- Connect the data transmission interface of the flight controller to the data transmission serial port of the air terminal module.
- Turn on the camera power switch and set parameters such as video format.
- Connect the 24V DC power supply to the power interface of the air unit module, and turn on the power switch.
- If you need the latest version of firmware, connect the air terminal module and PC or notebook through a USB cable, and use the wireless video link management software to upgrade the firmware。
- Connect the antenna to the RF interface of the ground end module.
- Adjust the remote control to trainer mode, if using PPM mode, connect the remote control interface of the ground terminal to the trainer port of the remote control; if using the S.BUS protocol, you need to use the S.BUS receiver to establish a wired connection with the ground terminal, to establish a connection.
- The PC or laptop is connected to the data transmission interface on the ground side through a TTL-USB cable to establish data transmission communication.
- If you want to watch the video on a PC or laptop, you need to connect to the video output interface of the network port on the ground side through a network cable.
- Connect the 24V DC power supply to the power supply interface of the ground terminal, and turn on the power switch.
- If you need the latest version of firmware, connect the ground terminal module and PC or notebook through a USB cable, and use the wireless video link management software to upgrade the firmware.
- management software
- Web UI management device
In addition to using the client, you can also manage the device through the webpage, connect the ground end and air end devices directly to the computer through the network cable, and configure the computer IP as 192.168. Access to ground and air terminals.
On the Status-Baseband status page, you can view detailed information such as signal strength, signal-to-noise ratio, transmit power, downlink traffic, and data transmission and reception.
On the Status-Device information page, you can view the device serial number and device software version information.
On the Config-Net settings page, you can configure the device’s own IP address, data transfer destination IP address and port. For example: Mavlink host IP is set to 192.168.199.33, Mavlink UDP port (Mavlink UDP port corresponds to the first physical serial port, Mavlink UDP port ext corresponds to the second physical serial port) is set to 14550, then the IP address of the ground station needs to be set to 192.168 .199.33, UDP listening port is set to 14550.
On the Config-Radio settings page, you can set frequency hopping, frequency point, and antenna selection.
The device can be bound on the Config-Bind settings page.
On the Config-System settings page, you can set the serial port baud rate, downlink MCS, ground end role, factory reset, etc. U1 baudrate and U2 baudrate respectively represent the baud rate of the first and second serial ports. QAM Mode supports adaptive mode, that is, the device automatically and dynamically adjusts the downlink mode according to the real-time wireless link quality.
On the Upload-upload page, you can upgrade the device firmware.
- Use Cases
- remote control function
The remote control function can choose PPM and S.BUS protocol for communication. If you use the PPM protocol, please use the wireless video link standard remote control cable to connect the ground terminal and the remote control trainer port. If the S.BUS protocol is used, an additional S.BUS-supporting receiver is required. The ground terminal is connected to the S.BUS receiver, and the S.BUS receiver establishes wireless communication with the remote controller. In both modes of use, the corresponding mode needs to be configured on the remote control. If you use an S.BUS receiver, please use a receiver whose working frequency is different from that of the video transmission module.
When using PPM mode, the air terminal module needs to be connected to the PPM RC interface of the flight controller (Pixhawk4).
When using S.BUS mode, the air terminal module needs to be connected to the DSM/S.BUS RC interface of the flight controller (Pixhawk4).
- Frisky（FRSKY）remote control configuration
- PPM mode
The mode of the Model setup major item – Trainer sub-item is adjusted to Slave/Jack.
It is necessary to adjust the mode of the Model setup major item – Internal RF sub-item to OFF, and turn off the S.BUS mode.
- S.BUS mode
The Model setup major item – Internal RF sub-item can be adjusted to LR12, D8, D16, OFF. OFF means to close the S.BUS mode.
Select LR12, D8, D16 options according to the type of receiver.
- Futaba remote control configuration
- S.BUS mode
The mode of the Linkage menu item – system sub-item can be adjusted to FASSTest-14CH, FASSTest 12CH, FASST MULTI, FASST 7CH, S-FHSS. Different mode settings are made according to the receiver type.
- PPM mode
Use the wireless video link standard trainer line to connect with futaba’s trainer line (one end is connected to futaba’s trainer port, and the other end is a 3.5mm connector), and the PPM mode can be used directly without additional configuration.
- Digital connection
The data transmission serial port of the air end module is connected to the TELEM1 port of the Pixhawk4 flight controller.
- Precautions
- link performance
- 2.4GHz WiFi interference
The working frequency of WiFi is 2.4GHz, and the working bandwidth is 20MHz and 40MHz. WiFi will cause same-frequency or adjacent-frequency interference to the 2.4GHz wireless link of the drone. Even if there is no WiFi router nearby for the WiFi device to connect to, the WiFi device will periodically send a beacon/probe signal. Therefore, when you use the 2.4GHz wireless link to operate the drone in the field, you need to turn off the WiFi device (such as a modem, hotspot, etc.) of the mobile phone or laptop. If the ground station needs to use a WiFi relay, it is recommended to use a 5.8GHz WiFI modem.
- Bluetooth interference
Bluetooth works in frequency hopping mode at 2.4GHz. Any Bluetooth device (such as Bluetooth mouse, Bluetooth joystick, car remote control key, etc.) in working condition and close to the ground station will interfere with the downlink products. Please avoid using Bluetooth devices when operating the drone with a 2.4GHz wireless link.
- Wireless Device Coexistence Interference
If another wireless device works on a frequency close to 2.4GHz, when this device is close to the 2.4GHz module of the drone, it will interfere with the wireless link of the drone. For example, some drones use both LTE links and point-to-point communication links. In particular, it is important to note that LTE operating on the 2.3GHz frequency may also cause problems.
- HDMI interference
When the HDMI source/cable is close to the antenna of the 2.4GHz wireless device, the HDMI source/video will interfere with the 2.4GHz wireless signal (including WiFi).
http://www.dslreports.com/forum/r27141612-HDMI-connect-interferes-with-wifi
It is recommended to install the antenna at least 24cm away from the HDMI source/cable. Using a good shielded HDMI cable is also a solution. The following shielded HDMI cables use 360-degree shielded terminations, which is recommended.
http://www.l-com.com/content/Article.aspx?Type=P&ID=10699
http://www.l-com.com/audio-video-micro-hdmi-to-hdmi-cables
http://www.l-com.com/audio-video-hdmi-female-to-micro-hdmi-male-adapter
- EMI of USB3.0 extender and splitter (HUB)
USB3.0 extender or splitter will cause EMI to the device, please check whether there is EMI when using USB3.0 extender to avoid interference to wireless devices.
- RF cable connection and antenna connection inspection
Before flying, check if the antenna is connected to the module. Using the module without the antenna connected will result in extremely short distances and may damage the module. It is recommended to check the connections of all RF connectors. Loose connections can significantly reduce distance.
- antenna installation
The placement of two antennas in the air ensures that no matter what the position of the drone, at least one antenna will not be blocked by the ground station payload. When installing the air end antenna, make it close to the vertical ground when the drone is moving.
- battery power
If the battery powering the module is low, transmit and receive performance will degrade, even though the battery may still be powering the module.
- Remote control channel and remote control
The remote control channel of the wireless video link module supports PPM and S.BUS protocols. If you use the PPM protocol, you need to configure the remote control to PPM mode and turn off the wireless transmission of the remote control. If the S.BUS protocol is used, the wireless operating frequency of the receiver and the remote control must be in a different frequency band from the operating frequency of the wireless video link module, and a certain degree of isolation must be guaranteed.
If you do not use the remote control channel of the wireless video link module, but use the remote control link that comes with the remote control, you must pay attention to the working frequency of the remote control link of the remote control. If the working frequency of the wireless video link module is in the same frequency band, it will interfere with each other.
When using it, it is necessary to avoid the interference of the wireless link of the remote control or the receiver on the wireless video link module.
- frequency selection
After the device is connected normally, open the wireless video link management software and click the “Frequency” button.
On the left side, you can observe the RSSI curve of the 2.4G WIFI frequency band scanning results.
The lower the RSSI value corresponding to the frequency point, the smaller the interference of the corresponding frequency point.
In order to ensure the best working performance, please select the frequency point with the least interference as the working frequency point.
The working mode provides two modes manual and automatic.
Manual mode: The user can manually configure the working frequency.
Automatic mode: After the device is turned on, it selects the working frequency according to the frequency scanning results.
Please use manual mode for manual frequency point configuration.
Use the channel selection function to configure the desired operating frequency.
- firmware upgrade
Upgrade files: Air-end FPGA, Ground-end FPGA, Air-end MCU1 program, Ground-end MCU1 program, Air-end MCU2 program, Ground-end MCU2 program.
All files are updated using management software. Do not disconnect the power supply during the upgrade process, and ensure the normal connection of the USB cable. If the upgrade fails, do not disconnect the power or restart the device, please try to upgrade again directly. Otherwise, it will be necessary to return to the factory and use a special burning tool for firmware burning.
- Device binding operation
Binding is the method used to pair the air-end and ground-end devices.
Air end and ground end binding process:
- Both the air end and ground end modules are powered on.
- First press the binding button (physical binding button, not the button on the software interface) of the air system module for more than 5 seconds. The LED light (green) next to the binding button will flash, indicating that it is in the binding state.
- Then press the binding button (physical binding button, not the button on the software interface) of the ground module for more than 5 seconds. The LED light (green) of the ground end will flash, indicating that it is in the binding state.
- After the link indicators of the air end and the ground end are always on, it indicates that the binding state has been entered, and the two end devices are powered off.
- Turn on the dual-terminal power supply, and the link indicator lights normally, indicating that the air terminal and the ground terminal have been connected normally. Bonded will also be displayed on the management software, indicating that the binding is successful. If Unbinded is displayed, it means that the binding failed.
Notice:
- If devices with different firmware versions are bound, the binding may fail.
- If the programs of the air unit and the ground unit are programmed incorrectly, for example, the air unit is programmed as the ground unit, and the wrong air unit and the ground unit are bound to each other, the binding will fail.
- The device has been bound before leaving the factory, and customers do not need to bind it again after unpacking.
- If the device is restored to factory settings, it needs to be re-bound.
- Computer Windows Firewall
Make sure that the firewall on the computer is closed to prevent data transmission or video data from being intercepted. Taking the Win10 system as an example, the steps to disable the firewall are as follows:
control Panel🡪system and security🡪Windows firewall🡪custom settings
Select “Close Windows Firewall” for private network settings/public network settings, and click “OK”.
- Computer IP address setting
When using a computer to watch videos, you need to set the IP address of the computer accordingly. Taking the HDMI ground terminal usage scenario as an example, the computer IP address needs to be set to 192.168.199.33.
The Win10 operating system setting path is as follows: Control Panel\Network and Internet\Network Connections, double-click “Ethernet”,
Double-click “Internet Protocol Version 4 (TCP/Ipv4)”,
Set the IP address and subnet mask as follows, and click “OK” to complete the setting.
- J30J-37 interface definition
| name | pin |
| Power | 1,2,20 |
| GND | 3,10,15,21,22,29,31 |
| Ethernet1 TX+ | 7 |
| Ethernet1 TX- | 26 |
| Ethernet1 RX+ | 6 |
| Ethernet1 RX- | 25 |
| Ethernet2 TX+ | 5 |
| Ethernet2 TX- | 24 |
| Ethernet2 RX+ | 4 |
| Ethernet2 RX- | 23 |
| Ethernet3 TX+ | 8 |
| Ethernet3 TX- | 27 |
| Ethernet3 RX+ | 9 |
| Ethernet3 RX- | 28 |
| SBUS_V | 11 |
| PPM | 12 |
| GPS_SYNC | 13 |
| Reserved | 14 |
| 232TX1 or 422Y2 | 16 |
| 232RX1 or 422A2 | 17 |
| 232TX2 or 422Y1 | 18 |
| 232RX2 or 422A1 | 19 |
| SBUS1 | 30 |
| SBUS2 | 32 |
| Reserved | 33 |
| 422Z2 or TTLTX1 | 34 |
| 422B2 or TTLRX1 | 35 |
| 422Z1 or TTLTX2 | 36 |
| 422B1 or TTLRX2 | 37 |
- common problem
Question 1: How does the wireless video link module supply power?
Module power supply range: DC 18-26V.
Question 2: Can the wireless video link module be powered on first and then install the antenna?
The antenna must be installed before powering on.
Question 3: How many antennas are installed on the wireless video link air terminal?
Two antennas need to be installed on the air terminal.
Question 4: How many antennas are installed on the wireless video link ground terminal?
Two antennas need to be installed on the ground end.
Question 5: Can different models of remote controllers be used to control the aircraft?
Yes, just output the standard PPM signal through the trainer port; or use the S.BUS receiver for communication.
Question 6: Can two air units be installed on one aircraft?
No, a plane can only have one air unit.
Question 7: Can two ground terminals be installed at the receiving end?
Point-to-point devices can only install one ground terminal; point-to-multipoint devices support multiple ground terminals.
Question 8: After installing the wireless video link air terminal module, the GPS fails to search for satellites, what should I do?
Please check whether the antenna of the device is far away from the GPS to avoid blocking interference to the GPS. 1. The frequency band of 4G equipment is close to the GPS frequency band, so a certain degree of antenna isolation must be ensured.
Question 9: What does it mean if the 6 LED lights of the ground end module are on or off?
LED1 (power indicator light): After the power is turned on, the light is always blue.
LED2~4 (network connection indicators): If the light is always on, it means that the physical link of the network port is connected, and if the light is off, it means that the physical link of the network port is not connected.
LED5 (uplink indicator): When the light is on, it indicates that the link between the ground unit and the air unit has been established; when the light is off, it indicates that the link between the ground unit and the air unit has been disconnected.
LED6 (downlink indicator light): When the light is on, it indicates that the link between the air unit and the ground unit has been established; when the light is off, it indicates that the link between the air unit and the ground unit has been disconnected.
Question 10: What should I do if the uplink status indicator light of the ground end is not on?
Please follow the steps below:
1) Please check whether the power supply of the air end and ground end modules is normal;
2) Please check whether the air end and the ground end are successfully bound;
3) Please check whether the antenna installation of the air terminal and the ground terminal module is normal: whether there is any obstruction in the installation position of the antenna; whether the antenna interface is loose; whether the feeder is not tightened, and whether the interface is loose;
4) Use the management software to check whether the transmitting frequency of the ground terminal is consistent with the receiving frequency of the air terminal;
5) If none of the above operations can solve the problem, please contact wireless video link technical support personnel.
Question 11: What should I do if the downlink status indicator light of the ground end is not on?
Please follow the steps below:
1) Please check whether the power supply of the air end and ground end modules is normal;
2) Please check whether the air end and the ground end are successfully bound;
3) Please check whether the antenna installation of the air terminal and the ground terminal module is normal: whether there is any obstruction in the installation position of the antenna; whether the antenna interface is loose; whether the feeder is not tightened, and whether the interface is loose;
4) Use the management software to check whether the transmitting frequency of the air terminal is consistent with the receiving frequency of the ground terminal;
5) If none of the above operations can solve the problem, please contact wireless video link technical support personnel.
Question 12: What should I do if the network physical connection indicator of the ETH ground end is not on?
Please follow the steps below:
1) Please check whether the power supply of the air end and ground end modules is normal and whether the modules start normally;
2) Please check whether the network cable is connected normally;
3) Please check whether the network camera is powered normally;
4) If none of the above operations can solve the problem, please contact wireless video link technical support personnel.
Question 13: After connecting the wireless video link device, the data transmission cannot be connected normally?
Please follow the steps below:
1) Confirm whether the wireless link status is established normally;
2) Please check whether the connection between the flight controller and the air terminal is correct and whether the connection between the ground terminal and the ground station is correct;
3) Please check whether the data transmission line sequence of the air end and ground end modules is normal. Our company provides standard cables. If you do the wiring yourself, please check the line sequence;
4) Check whether the data transmission baud rate is consistent with the flight control through the management software;
5) Whether the computer firewall of the ground station is closed;
6) If none of the above operations can solve the problem, please contact wireless video link technical support personnel.
Question 14: After connecting the wireless video link device, the remote control cannot be connected normally.
Please follow the steps below:
1) Confirm whether the wireless link status is established normally;
2) Please check whether the connection between the flight controller and the air terminal is correct and whether the connection between the ground terminal and the remote control is correct;
3) If using PPM mode, please check the mode configuration of the remote control; if using S.BUS mode, please check the receiver and remote control configuration;
4) Please check whether the remote control line sequence of the air end and ground end modules is correct;
5) Check whether the remote control mode is configured correctly through the management software;
6) If none of the above operations can solve the problem, please contact wireless video link technical support personnel.
Question 15:After connecting the wireless video link device, the image cannot be displayed?
Please follow the steps below:
1) Confirm whether the wireless link status is established normally;
2) Confirm whether the network physical connection indicators of the air terminal and the ground terminal are normal;
3) If using a network camera, please confirm the IP address of the network camera, login user name and password;
4) Whether the IP address configuration of the ground station computer and the network camera are in the same network segment;
5) Whether the video stream address configuration for playing RTSP is correct;
6) Whether the computer firewall of the ground station is closed;
7) If none of the above operations can solve the problem, please contact wireless video link technical support personnel.
Question 16: After connecting the wireless video link device, the image freezes or there is a mosaic phenomenon?
1) Confirm whether the downlink mode configuration is reasonable;
2) Whether the network cable used is connected properly;
3) Whether there is interference in the downlink, consider changing the working frequency point;
4) If there is no interference, whether the limit distance of the communication link has been reached;
5) Observe whether the downlink rate of the pod fluctuates too much. For example, the fixed bit rate of the pod is 3 Mbps, and the downlink rate of the client is set to 3.97 Mbps, and the peak value of the pod’s bit rate is likely to be at a certain stage If it exceeds 3.97 Mbps, there will be lag or mosaic phenomenon at this time. Set the downlink rate of the client to 5.27 Mbps, and verify whether the downlink rate exceeds 3.97 Mbps. If it exceeds 3.97 Mbps, set the downlink rate of the client to be greater than the peak value of the pod;
6) Check the real-time downlink rate of the client, whether there are double camera streams;
7) If none of the above operations can solve the problem, please contact wireless video link technical support personnel.
Question 17: Using wireless video link equipment, the communication distance is short, which does not meet expectations?
1) Confirm whether the antenna and connecting cable are installed correctly and whether they are standard materials of wireless video link;
2) Ensure that the antenna installation of the air terminal will not be blocked by the load, and that there is no obvious obstruction in the short distance of the antenna of the ground terminal, and that the antenna of the air terminal and the ground terminal are perpendicular to the ground;
3) Check whether the video transmission equipment hardware such as power amplifier is damaged;
4) Whether the downlink mode configuration value is unreasonable, and the high-speed downlink mode will significantly reduce the communication distance;
5) Whether the working frequency is significantly interfered, you can select the optimal frequency through the client;
6) Whether the air terminal and the ground terminal are seriously blocked in the flight environment, and the complex geographical environment will affect the communication distance;
7) If none of the above operations can solve the problem, please contact wireless video link technical support personnel.