overview
AJ-DL245 is a remote WIFI private protocol dedicated module based on 802.11 design, using full V3S, ARM Cortex-A7, up to 1.2GHz; Conforms to the standard IEEE802.11b/g/n/wireless network protocol and private LR-WiFi (Long Range WiFi) protocol, greatly expands the communication distance, adopts wireless signal multichannel transceiver, transmission rate up to 300Mbps. The module can be powered by USB, supports network ports and USB virtual network ports, and integrates the transparent transmission function of serial ports.
This document mainly describes the function, performance and hardware interface of the AJ-DL245 module, with test methods.
Interface definition
Method of application:
1. The factory default IP address of the module is 192.168.100.1/.2, and the module is configured to be used as one-come-one-receive (master/slave mode). After the module is powered, it can work.
2, the transmitter is fixed on the UAV or other products, can be fixed by 3M glue, cable tie and other strong fixing methods (be sure to check whether it is fixed firmly before use), such as with our pinion camera, there can be a fixed mounting hole;
3, the antenna must be installed vertically down/up, and the spacing between the two antennas shall not be less than 15cm;
4, after the installation is complete, you can use a matching line to connect the computer ping module IP address;
5, installation attention module and antenna should not be close to high-power equipment or magnetic, metal objects, after installation check that no error, select 12V or 5V power supply after the transmitter starts to work.
Operating frequency band | From 2384 to 2.3 GHz / 2.4 ~ 2.484 GHz | |
Antenna interface | IPEX/SMA | |
Networking mode | Point-to-point/Star Networking (Central point) | |
Modulation mode | QPSK,BPSK | |
Transmitting power | 20dBm (Max) | |
Receiving sensitivity | -96dBm (Min) | |
Transmitter index | Transport protocol | Tcp/Udp/Htpp/FTP/RTSP/RTMP conventional network protocol |
Operating bandwidth | 32MHz | |
delay | Approx. 10ms (image transmission only) | |
Compressed format | H.264/H.265 | |
Image sharpness | 4K@60/50/30 (backward compatible) | |
Operating voltage | DC 12~24V, USB interface is 5V (cannot be used at the same time) | |
Image interface | Network Port /HDMI (Optional) | |
Data interface | TTL serial port (Baud rate up to 115200) | |
Overall power | 2.5 W or less | |
Transmission distance | Receiver 3dBi antenna: transmission distance up to 2~3km; | |
Receiver 5dBi antenna: transmission distance up to 2~5km; | ||
weight | 5g | |
Product size | 55 * 45 * 7.5 mm | |
Service temperature | - 20 ° to 60 ° | |
WiFi RF Specifications
Transmitting power & EVM | WiFi - 2.4 G: 16.5 + / - 1.5 dBm & < 15 db @ 11 b - 11 MBPS 16.5 + / - 1.5 dBm & < - 28 db @ 11 g - 54 MBPS 16.5 + / - 1.5 dBm & < - 28 db @ 11 n - 40 - MCS7 HT20 / |
Receiving sensitivity@PER | WiFi - 2.4 G: 11b-1Mbps: -94dBm@PER<8%; 11b-11Mbps:-85dBm@PER<8%; 11g-54Mbps:-72dBm@PER<10%; 11n-HT20-MCS7:-70dBm@PER<10%; 11n-HT40-MCS7:-68dBm@PER<10%; |
Rf test report | ||||||||||
PathA | ||||||||||
2.4 G | ||||||||||
mode | speed(Mbps) | power(dBm) | EVM(dB) | sensitivity(dBm) | ||||||
CH1 | CH7 | CH13 | CH1 | CH7 | CH13 | CH1 | CH7 | CH13 | ||
11b | 1 | 16.6 | 16.5 | 16.3 | - 25 | - 25 | - 25 | - 96. | - 96. | - 96. |
11 | 16.8 | 16.4 | 16.7 | - 25 | - 25 | - 25 | - 88. | - 88. | - 88. | |
11g | 6 | 16.5 | 16.7 | 16.6 | - 25 | - 25 | - 25 | - 93. | - 93. | - 93. |
54 | 16.5 | 16.5 | 16.5 | - 29 | - 29 | - 29 | - 75. | - 75. | - 75. | |
mode | speed(Mbps) | power(dBm) | EVM(dB) | sensitivity(dBm) | ||||||
CH3 | CH7 | CH11 | CH3 | CH7 | CH11 | CH3 | CH7 | CH11 | ||
※ Using LR-WiFi test
Performance referencedoes | ||
Transmission environment | Transmission distance | Typical application scenario |
Unobstructed Line of sight (LOS) Open ground to air | 3KM | Drone image transmission |
Unobstructed Ground Open ground | 1.2 KM | Outdoor camera Unmanned vehicle |
Indoor 3~4 walls indoor Three or four walls | 30m | Indoor camera |
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