The company's R&D center has established a professional radio and television R&D testing laboratory. The equipment used in the laboratory is consistent with that of the international radio and television testing laboratory organizations DTG and the US Cable Labs, ensuring high standards of R&D and accuracy of testing. To better serve industry customers, the company can provide open experimental conditions for operators, research institutes, and product R&D companies.
Doewe has opened its laboratory, which is equipped with major measuring instruments including Rohde & Schwarz (R&S) DVM400, SFU, SFC, and spectrum analyzer FSH4. It offers testing services for radio and television testing and measuring instruments, and also provides instrument rental services to meet the diverse needs of users.
1. R&S DVM400 Digital Video Test System
◆ Comprehensive testing, analysis, and monitoring functions for digital television. It can analyze all levels of digital video and thoroughly troubleshoot intermittent faults.
◆Supports DVB-S/S2 RF input and indicator measurement.
◆Windows operating system, easy to carry, weighing approximately 10Kg.
◆Supports compressed video elementary stream analysis; data broadcast monitoring and analysis can be parsed to the bit level.
◆The stream analyzer DVM400 supports video and audio decoding quality monitoring, provides hardware decoding display, and monitors decoded audio.
◆Supports multi-transport stream monitoring, enabling all-round and multi-level stream monitoring.
◆Has large-capacity stream recording and playback functions, supports seamless loop streams, and provides an editor. While generating digital TV signals, it can also achieve high-speed stream recording for long-term storage of streams.
◆Supports IPTV analysis, including MPEG I, MPEG II, and H.264 video compression formats; MPEG I Layer2, MPEG II, and AC3/AAC audio compression formats; and various audio sampling rates.
◆Supports various types of stream libraries, including SDTV, HDTV, H.264 streams, and other TS streams with special compression formats or special content.
◆Equipped with 2 USB interfaces for convenient data transmission and a LAN control interface.
2. R&S SFU Radio and Television Test System
Main Functions Overview：
◆ Integrates almost all global digital TV/mobile TV standards.
◆ Supports real-time analog TV signal generation, meeting all analog TV standards.
◆ Can provide more economical production line solutions as needed.
◆ Output frequency range: 100 kHz to 3 GHz.
◆ Internally integrates digital and analog TV interference signal sources for testing adjacent channel interference.
◆ Offers multiple channel emulation functions, including multipath fading and various types of noise.
◆ Provides high-precision bit error rate (BER) measurement.
◆ Built-in TS stream generator, capable of playing seamless loop GTS streams.
◆ Supports recording and playback of .TRP format streams (compatible with .TS) and ETI baseband streams.
◆ Built-in I/Q arbitrary function generator to meet R&D needs.
3. R&S SFC Compact Modulator
The R&S SFC compact modulator is an economical multi-standard signal source that provides real-time encoding for all digital and analog TV and audio broadcasting standards. With a height of 1 unit and ½ 19", it is compact in size, making it ideal for rack mounting in production test systems. Despite its small size, it is fully functional, equipped with an integrated traditional stream player, audio/video generator, and optional noise source, making it suitable for simple applications in development. The R&S SFC is controlled via a USB mouse, keyboard, and monitor, or remotely via LAN using remote desktop. It features the same renowned graphical user interface as the R&S SFU and R&S SFE, and allows remote control via SCPI commands.
1）Multi-standard signal generator with real-time encoding
◆ Cable, satellite, terrestrial TV digital and analog standards.
◆ Digital and analog audio broadcasting standards.
◆ Real-time signal generation and encoding.
◆ Other standards can be upgraded as software options.
2）Integrated baseband signal source
◆ Transport stream player.
◆ Transport stream library for digital TV standards.
◆ Analog audio/video generator.
◆ Analog TV test pattern library.
3）Simple and convenient remote operation
◆ Local operation using USB mouse, keyboard, and monitor.
◆ Remote control and operation via LAN.
◆ Optimized processing for production test systems.
◆ Compact housing, ideal for rack mounting.
◆ Low power consumption, reducing operating costs.
◆ Compatible with Rohde & Schwarz system control software.
◆ Can operate independently without a computer.
4）Other functions for professional applications
◆ Integrated additive white Gaussian noise generator.
◆ ASI transport stream input.
◆ Digital I/Q input.
◆ 10MHz reference signal input.
4. R&S FSH4/8/13/20 Handheld Spectrum Analyzer
The R&S FSH4/8/13/20 is a new handheld spectrum analyzer launched by Rohde & Schwarz for future applications. It integrates multiple testing functions such as spectrum analysis, antenna and feeder analysis, full-function vector network analysis, vector voltmeter, power meter host, and broadband communication demodulation, with indicators comparable to mid-to-high-end benchtop spectrum analyzers. The R&S FSH4 and R&S FSH8 demonstrate the miracle of small size and high performance, making them excellent handheld RF test instruments in the industry.
Main Features：
◆ Frequency range: 9kHz to 3.6GHz, 8GHz, 13.6GHz, 20GHz.
◆ High sensitivity (<–141dBm; <–161dBm with preamplifier on).
◆ 20MHz demodulation bandwidth, facilitating LTE signal analysis.
◆ Low measurement uncertainty (<1dB).
◆ Minimum resolution bandwidth of 1Hz, clearly presenting signal details.
◆ Up to 20MHz signal demodulation bandwidth, meeting future testing needs.
◆ Built-in tracking signal source and VSWR bridge, with DC bias power supply.
◆ Standard measurement functions include THD/OBW/ACLR/SEM/channel power/gated trigger scanning.
◆ Optional full-function dual-port network analysis, cable breakpoint analysis, and vector voltmeter.
◆ Optional spectrum waterfall function for capturing and recording intermittent signals.
◆ Optional WCDMA/CDMA2000/EVDO/LTE-FDD/LTE-TDD demodulation tests.
◆ Optional accessories such as a variety of antenna probes are available, enabling easy completion of various RF measurement tasks.
◆ Rugged and waterproof housing, suitable for harsh field working conditions.
◆ Lightweight (3kg with battery), easy to hold, with a Chinese interface and easily accessible function keys.
◆ Supports GPS positioning.
◆ Easily replaceable high-capacity lithium-ion battery, with a working time of up to 4.5 hours.
◆ LAN and USB interfaces for remote control and measurement data transmission; measurement results can be saved on an SD card.