DLM full duplex wireless transceiver module for video and data Link

 — TDD OFDM full duplex wireless transceiver module for video and data link
    — 高達 30Mbps Iperf 吞吐量@20MHz 頻道
    — Supports Point-to-Point and Point-to-Multipoint networks
    — RF Tx Power: 25±2dBm
    — 工作頻率: 806~826HMz, 1428~1448MHz, 2402~2482MHz
    — Web UI or control uart for management
    — 2 乙太網路和 1 TTL uart data link

DLM module was designed for video and data wireless transmission with two way wireless data link. This OFDM radio module works at 800MHz, 1.4GHz and 2.4GHz bands, 採用跳頻技術 (FHSS) to make sure better stability signal communication.

特徵:

• TDD 正交頻分複用調變
• Supports three bands (806~826HMz/1428~1448MHz/2402~2482MHz)
• 支援各頻段內的 FHSS
• 1.4/3/5/10/20MHz band widths
• Max 30Mbps@20MHz throughput
• 射頻發射功率: 25±2 dBm
• 星座: QPSK, 16QAM, 64QAM, 自適應
• 靈敏度: -106分貝(2.4千兆赫 1Mbps), -108分貝(1.4千兆赫 1Mbps), -108分貝(800兆赫1Mbps)
• 支援IP資料傳輸(2 乙太網路埠)
• 支援串列資料傳輸(1 頻道, TTL)
• Up to 17km LOS (無人機對地) and 2km LOS(地對地)
• Web UI or control uart for management
• AES128 加密
• Uplink and downlink stream control
• 群組網方式: 點對點, 點對多點, 中繼, 網(指定)
• 移動速度: 支援不低於120km/h
• 電源輸入: 7～30V
• Power consumption<4W¯¯
• 方面: 58*48*10毫米
• 重量: 28G

輸入/輸出

電源輸入	2 welding hole, DC in:7～30V
以太網絡 1	4PIN PH1.25mm 可鎖連接器
以太網絡 2	4PIN PH1.25mm 連接器
FPC_Main	Designed for connecting with video encoder/decoder module
資料串口	3PIN PH1.25mm 可鎖連接器, TTL 3.3V
控制串口	4PIN PH1.25mm 連接器, TTL 3.3V
USB	4PIN PH1.25mm 連接器, for software upgrading
轉變	Tx/Rx control signal for outside power amplifier
Main antenna	Tx/Rx Antenna port, IPEX
Second antenna	Rx 天線端口, IPEX

Wireless networking with DLM

DLM module supports two operating modes: Access Node or Central Node. It can be managed through Web UI or AT command via config uart. DLM module supports features of maximum 16 Access Nodes connected to a Central Node. All of the Nodes are in a same wireless LAN and share the whole transmission bandwidth (maximum 30Mbps@20MHz throughput). Data from Central Node to Access Node, we call downlink, and data from Access Node to Central Node, we call uplink. Uplink and downlink stream ratio can be controlled through web UI or AT command. When using DLM module for Point-to-Point transmitting, uplink and downlink share the whole transmission bandwidth (maximum 30Mbps@20MHz throughput) too. DLM module supports networking mode: Point -to-Point, 點對多點, 中繼, and Mesh (specify mesh version when order).

Add Tx Power Amplifier

The maximum RF transmission power of DLM module is 25±2 dBm, also provides power amplifier to increase the RF Power to 2W/5W/10W. Below diagram shows how to add power amplifier outside of the DLM module.

Point-to-Point transmitting

Point-to-Multipoint transmitting

Relay transmitting

Mesh transmitting (指定)