10km Compatible Data GPRS Modem Wireless Transmitter RS232 Serial Server Port

Instruction:

DS-303 is a data radio module, adopts double phase-lock loop, double VCO structure, high stability TXCO. With advanced arithmetic fault-rectify system in software design, it has high stability and reliability. This module is usually used for industry control, water conservancy, electric, oil field management, wireless alarm so on. Moreover, we can extend its functions and ODM products for you according to your specific application.

Features:

Specification:

Carrier frequency: VHF/UHF;

Baud rate: 1200-19200bps

Interface: TTL/RS-232/RS-485 (selection);

Modulation: FSK/MSK;

Frequency stability: ±2.5ppm;

Channel spacing: 25kHz;

Antenna impedance: 50 ohm;

Temperature: -30~+70℃;

Supply voltage: 12V;

Size: 115*60*20mm;

Transmitter indicator:

RF power: 2W

Frequency: 400-470MHz (subdivided)

Frequency deviation: ≥ 5.0kHz

Adjacent channel power: ≥70dB

Transmitting current: ≤1.5A

Receiver:

Receiving sensibility: ≤-119dBm (more than 12dB SINAD)

Adjacent channel selectivity: ≥65dB

Intermodulation rejection: ≥65dB

Clutter and images rejection: ≥70dB

Setting of frequency, interface, and data format

Before using DS-303, users can use our software to setting frequency value, interface rate and data format.

A. Users can program any frequency value in the frequency range. Before ordering, clients need confirm the frequency range.

B. Users can choose the interface rate according to requirement.

C. Users can change the data format individually.

Supported protocol and Transmit capability

DS-303 transceivers offer transparent protocol to support various applications and protocols of users.

If the user needs to decrease his cost or ease the workload of terminal CPU, we can add other specific functions based on the transparent protocol, such as addressing, data acquisition, command interpretation and so on.

Description of Indicator light

a. The red and green lights will keep on about 50Ms when power supply.

b. The red light is normally on when transmitting data, while the red light will crush out after ending the data.

c. The green light is normally on when receiving the air signal, while the green light will crush out after receiving the air signal.

Dingshen is a leading of High-tech global enterprise in developing and manufacturing. Company established in 1998 and located in Shenzhen China. Specializing in the provision of advance wireless microwave communication system to the broadcast, UAV, public surverillance and defense industries. By continuously investing in innovation and combining exceptional products and services, Kimpok offers superior solutions that enable our customers to do their jobs even more effectively.

Dingshen has a very strong technical team and R&D capacity. we dedicated to developing the high level wireless mobile video surveillance system for application of Law enforcement and military, field forces, radar, R/C helicopter, security & protection, government departments, military, security systems, oil field, Vessel, large mines, factories and so on.

Last for 15 years, Dingshen continually concentrate on researching and innovating in the wireless high speed mobile video transmission industry based in LOS/NLOS environments,especial for Unmanned aircraft vehicle(UAV), airborne area and soldier man-pack areas. COFDM modulation and TDDworking mode transmitter/receiver are our demonstrable advantages.All the products production must be in very strict quality management by using US original (HP) spectrum analyzer and Germany (Rohde & Schwarz) Network Analyzer.

The transmitter and receiver are with Anti-jamming, high quality image, long range transmission distance, and have a highly appraise in this area. Company’s developing and long-term programming is the key way for leading us to be the leader at this area, we always believe we can do it. We will continually concentrate on researching and innovating in the wireless microwave transmission industry.

Welcome to tell use your needs, we will try to meet your requirements and custom made a special device for you.” Your support and suggestions are our motivation”. We aim to provide our users worldwide exclusive advanced wireless videography system.