Overview

The 3kw CDR FM frequency band digital audio broadcasting transmitter is suitable for three working modes: analog, digital, analog, and digital in band simulcasting. Support all spectrum operating modes required by CDR technology standards. The transmitter mainly includes exciter (modulator), power amplifier, passive components, switching power supply, etc. The output power of the whole machine shall not be less than 3KW (analog output power in the case of simultaneous broadcasting of digital and analog). Digital signal input supports two methods: IP and ASI; Analog signal input supports AES/EBU, XLR, and RDS/SCA signal insertion.

System Characteristics
Advanced technology and design concepts；
LDMOS all solid state technology, fully solid state of the whole machine；
National patent allocation and synthetic technology；
Modular design concept；
Parallel redundancy design reduces downtime rate；
Parallel redundancy design of power amplifiers: The transmitter has two identical 2KW linear power amplifiers, which can be used as backups for each other and can be replaced at will；
Backup redundancy design of power supply: multiple switching power supplies are connected in parallel for current sharing, and the microcomputer monitors the working status of the power supply.
Backup redundancy design of exciter: The main exciter and backup exciter are mutually backed up and automatically switched. (The spare exciter is an optional component.)
Intelligent and networked monitoring system
ARM processor control technology has powerful self diagnostic capabilities.
Touch screen design, simple and practical operation.
Well developed data detection technology, monitoring system, and fully functional computer control software.
The CAN bus control system is fast and reliable, making it easy to use computer management and monitoring
Complete protective measures to ensure the safe operation of equipment.
Adopting high-performance high-power amplifier tubes with anti standing wave ratio of 40:1
The power amplifier is equipped with protections such as VSWR, temperature, and overexcitation.
The switching power supply is equipped with overvoltage, overcurrent, undervoltage, temperature and other protections.
The whole machine is equipped with VSWR, lightning protection, and phase loss protection.
Hot swappable technology, convenient for maintenance and operation.
Amplifier hot swappable;
Hot swappable switch power supply.