50W～100W Digital TV Transmitter

Overview

This transmitter is composed of various standard terrestrial digital TV exciter modules (DTMB, ISDB-T, DVB-T/T2, ATSC or full standard) using FPGA+DDS technology, and is a terrestrial digital TV transmitter that complies with a single standard or full standard.

This product adopts a powerful 4-core ARM microprocessor+FPGA+SOC joint control system to ensure excellent performance and stable operation. Adopting a silky graphical interface, users can operate the transmitter like a mobile phone, realizing the design concept of operating this product without reading the user manual.

This product uses AMPLON's latest generation of high-efficiency, high linearity, and anti standing wave ratio LDMOS tubes as power amplifier components, equipped with a highly reliable power amplifier power supply with over 100% redundancy, striving to implement the design concept of extremely high reliability.

Product model: 50W and 100W.    ZHC518D-50W, ZHC518D-100W

Features

●A high-performance incentive module that meets a single standard or a full standard, achieved through FPGA+DDS technology.

●The 4.3-inch color touch screen displays the main parameters and operating status of the exciter module, power amplifier, single frequency network timing device, etc., and various parameters can be set through the screen.

●All solid state digital TV transmitter, using the latest generation of high linearity, high efficiency, and high standing wave ratio resistant LDMOS transistors.

●Adopting Huawei's high-efficiency hot-plugin switch power supply for front-installation, easy for maintenance and repair.

●Combined with the adaptive pre-distortion correction technology of the incentive module, high efficiency for the entire transmitter.

●Equipped with a built-in timer for automatic power on/off, it can achieve timed automatic power on/off.

●Set emergency power button, which can be turned on and off with one click.

●Visualized human-machine interface, operate the transmitter like a phone.

●Multiple alarm and protection functions (overvoltage, overcurrent, overheating, overpowering, over SWR, etc.).

●Networked telemetry and remote control, which can be monitored by web page.

●High reliability design, capable of working continuously for 24 hours.

Diagram

Technical Specifications

1. Working channel:    VHF or UHF

2. Output power:              Two power levels 50W or 100W

3. Channel bandwidth:         8MHz or 6MHz

4. RF output impedance:       50Ω

5. RF output interface:         N or 7/16” female

6. Output load reflection loss:  Normal operation:- 26dB

Allowed working:- 20dB

7. Power input level:           -5dBm～0dBm

8. Out of band useless emission: ≤ 60dB (with an external bandpass filter)

9. In band fluctuation:           ≤ ±0.5dB

10. Shoulder on:                better than 40dB

11. MER:                        better than 36dB

12. ASI stream input interface:  BNC female

13. IP stream input interface:   RJ45 female

14. Network communication interface: RJ45 female

15. RS232 communication interface:  RS232 female

16. Power supply voltage:             AC220V/50Hz

17. Operating environment temperature: -10℃～45℃

18. Relative humidity:                 <95%

19. Altitude:                          <2500m (<4500m optional)

20. Dimensions:               88mm (height) x 483mm (width) x 460 (depth)

21. Weight:                    13Kg

All other specifications meet the technical requirements and measurement methods for terrestrial digital television broadcast transmitters (GB/T28435-2012)