Instructions for Use:

1. Product Introduction

DJHW/HZ‑40‑30M‑C belongs to DJADHOC high‑power MESH ad‑hoc radio family built on OFDM‑TDD wireless‑communication architecture. Designed for long‑range large‑scale field operations, it enables integrated wireless transmission of HD video, remote‑control commands and sensor data in public‑network‑denied areas.

Supporting MESH multi‑hop forwarding, mobile nodes rapidly re‑join coverage after temporary disconnection. Routing tables rebuild automatically upon topology changes, and isolated sub‑networks merge quickly. Equipped with automatic frequency‑hopping anti‑interference capability, it adapts to complex electromagnetic conditions over sea, mountain and suburban zones. It can be deployed as UAV airborne payload, portable vehicle‑mounted unit or fixed tower‑top relay station, serving as high‑performance wireless terminal for maritime search‑and‑rescue, forest‑fire prevention, large‑scale emergency communication and long‑distance pipeline inspection.

2. Core Technical Specifications

表格

3. Core Networking Capabilities

1. Fast Access & Re‑connectionNodes complete network access within seconds after power‑on. Mobile nodes restore communication automatically when returning to signal coverage after disconnection.

2. Dynamic Intelligent RoutingSupports multi‑hop forwarding. Alternative transmission paths are selected automatically under link disconnection or bandwidth congestion to guarantee uninterrupted services.

3. Rapid Sub‑Network MergingTwo geographically‑isolated independent sub‑networks merge within 1 second once radio links are established. All nodes inter‑communicate without disrupting existing services.

4. Automatic Frequency‑Hopping Anti‑InterferenceAutomatically scans electromagnetic environment, avoids interfering channels and selects optimal working frequency to improve reliability in complex sea‑surface and mountain scenarios.

4. Hardware Interfaces & LED Indicator Definition

Interface Description

1. Power Port: Molex 2.5 2‑pin, DC 20‑30 V input. Connect antennas BEFORE power‑on; powering‑on without antennas will damage RF circuits. Power source shall be ≥2A.

2. Serial‑Data Port: Molex 2.5 3‑pin, configurable TTL / RS232 / RS485 / CAN for bidirectional serial‑Ethernet transparent transmission over TCP / UDP.

3. RF Antenna Port: SMA‑J connectors for MAIN and AUX antennas. Keep ≥15 cm distance between two antennas and stay away from large‑size metal structures.

Important Installation Notes

1. Mount ground‑side antennas higher than 3 m at high‑elevation open‑field sites to reduce obstruction loss.

2. At least two units are required for normal operation; single unit cannot work standalone.

3. For multi‑unit deployment, keep physical distance ≥2 m between devices to prevent self‑interference.

LED Indicator Definition

• PWR: Power indicator, steady‑on when powered.

• MODE: Purple during boot‑up; Red = Master mode; Green = Slave mode.

• RSSI: More lit LEDs mean better signal after networking; cyclic flashing when unconnected.

5. WEB‑UI Management System

1. If primary IP is forgotten, configure PC to matching subnet and access backup IP 192.192.192.192 for configuration recovery.

2. Configuration items: master/slave working mode, matching key, bandwidth, frequency channel, transmit power, serial‑port TCP/UDP parameters.

3. Status monitoring: received‑signal energy, SNR, noise floor, bit‑error rate and estimated transmission distance of each node.

4. System maintenance: OTA firmware upgrade via web page without device disassembly.

6. Typical Application Scenarios

• High‑power UAV airborne video‑data transmission & long‑range aerial MESH relay

• Long‑range wireless communication links for offshore maritime search‑and‑rescue & maritime patrol

• Large‑area forest‑fire prevention & mountain‑wide emergency‑rescue communication

• Wireless data backhaul for long‑range pipeline & power‑line inspection

• Vehicle‑mounted portable communication base‑stations & tower‑top long‑distance fixed relays

• Video, remote‑control and sensor‑data transmission in field locations without public‑network coverage

7. Package & Technical Services

1. Factory Pre‑configuration: Pre‑set frequency band, matching key and master‑slave mode per‑project requirements for out‑of‑box networking.

2. Deliverables: Hardware datasheet, wiring definition document, WEB‑UI operation guide.

3. Technical Support: Remote debugging, link‑fault troubleshooting, project‑oriented customization available.

4. Firmware Service: OTA remote firmware iterative upgrade via WEB‑UI.

(DJHW/HZ-40-30M-C Product Physical)

(DJHW/HZ-40-30M-C product indicator light)

The indicator lights of DJHW/HZ-40-30M-C products are as follows from the left:

• LAN1: Indicates whether the network cable is connected.

• LAN2: Indicates whether the network cable is connected.

• RSSI: Indicates the energy strength of the signal received by the device. When connected, the LED will light up, and the higher the signal energy strength, the more LED lights up. When there is no connection, the 3 LED lights flash in a loop.

• L MODE: Red: The device is operating in "master mode", green: The device is operating in "slave mode".

PWR: The device stays on continuously after being powered on.

The interface surfaces of DJHW/HZ-40-30M-C products are as follows from the left:

• Molex2.5 4PIN: 100Mbps network interface network interface 1.

• Molex2.5 4PIN: 100Mbps network interface network interface 2.

• Molex2.5 3PIN：RS232/TTL/RS485， Specify pin definition 123TTL/RS232T data interface 1 according to requirements.

• Molex2.5 3PIN：RS232/TTL/RS485/CAN， Specify pin definition 123TTL/RS232 data interface 2 according to requirements.

• Molex2.5 2PIN: Power supply voltage of 20~32V, typical value of 24V 2A or above power interface.

*Do not place other electronic devices too close to the device antenna to avoid affecting the bottom noise of the device.

*When pulling the distance, try to make the ground antenna unobstructed by obstacles, and place the ground antenna at a height greater than 3 meters.

*Please ensure that all connecting wires are securely fastened and all components are functioning properly before use.

*Please do not disassemble or modify without authorization, otherwise the warranty will not be provided. If you encounter any unresolved issues during installation or testing, please contact the original factory technical support.