The rapid development of digital radio frequency (RF) technology has brought about a result that the spectrum is becoming more and more crowded, and the efficiency of use is becoming higher and higher; at the same time, modern RF signals have become extremely complex. In order to improve capacity, performance, and confidentiality, comprehensive RF technologies such as burst, frequency hopping, and adaptive modulation are generally used in combination. These technologies all show the characteristics of power and frequency changing with time, and are transient. The interleaving and popularity of these signals pose various challenges to design engineers, who must capture and analyze these RF signals that change over time. RF engineers need to look at the exact details of RF signals that change over time more than before, so Rick King, vice president of Tektronix ’s RF test product line, pointed out: “Time can no longer be ignored in the RF field. Now is the time for next-generation real-time spectrum analysis technology. "Relying on traditional swept frequency analyzers and vector signal analyzers (VSA), engineers have been unable to capture and analyze these transient RF signals 100%. The latest RSA6100A series of real-time spectrum analyzers from Tektronix enables engineers to quickly capture and analyze problems. This series of products provides an excellent combination of capture bandwidth and dynamic range. 6.2GHz RSA6106A and 14GHz RSA6114A provide industry-leading 110MHz real-time bandwidth and 73dB of spurious-free dynamic range. The high performance of these two aspects is said to be among other products. It is difficult to have both. A key breakthrough for the new product RSA6100A for high-end applications is the introduction of digital fluorescence (DPX) technology, King said: "DPX waveform processor technology generated the industry's first real-time RF spectrum picture, enabling engineers to view previously unknown existence The RF signal instability and transients have greatly improved the spectrum update rate and information display ability, and converted a large amount of RF data into a clear view. " DPX technology is the introduction of digital phosphor oscilloscope (DPO) technology in the time domain into the frequency domain. It adopts a parallel processing structure. Compared with the fastest scanning frequency analyzer and vector signal analyzer, its spectrum processing speed is increased. Nearly 1,000 times, more than 48,000 spectrum measurements can be processed per second. By continuously converting time-domain signals into the frequency domain, DPX technology provides a means for displaying both frequent and infrequent events at the same time, extracting and real-time computing discrete Fourier at a frame rate much higher than the human eye can perceive Transform (DFT) and transform them into an intuitive and comprehensive picture of activity. The variable color level afterglow will maintain anomalous signals until they can be seen, so Tektronix RF product line product manager Matthew J. Maxwell emphasized: "RSA6100A helps to reveal undetectable glitches and other transient events. At each update Time, the power level value at each frequency in the capture bandwidth will be recorded, and by changing the color on the display, the signal power at each frequency will be displayed over time. Spectrum information below the peak amplitude of the network. Another important aspect, RSA6100A provides a unique frequency mask trigger (FMT) function, allowing users to trigger measurements based on the occurrence of unique event patterns in the spectrum. The high dynamic range of FMT can trigger weak transient signals while ignoring known strong signals. FMT works on the entire 110MHz real-time bandwidth of the RSA6100A series, and can reliably capture difficult-to-detect RF signals or frequency anomalies that traditional analyzers will miss. When debugging RF circuits, FMT is critical to finding signals with low power or varying with time. It can detect occasional signals, existing intermodulation products, and transient spectrum suppression violations. FMT is essential for monitoring applications and radar work. It can capture related events on the spectrum, such as weak signal pulses under complex spectrum conditions. These events cannot be captured based on level triggering alone. From the application point of view, Maxwell pointed out that the RSA6100A is suitable for applications in many fields such as digital predistortion (DPD) power amplifiers, radio monitoring, and radar design. In response to the situation in China, Wu Youshou, a professor in the Department of Electronic Engineering of Tsinghua University and an academician of the Chinese Academy of Sciences, emphasized its significance for digital TV: "The development of digital TV standards requires real-time spectrum testing, and digital TV broadcasting standards will soon be used in China. Digital TV can reliably receive signals under high-speed movement? How to ensure that interference is avoided in complex spectrum application environments? These applications also require real-time spectrum analyzers. " RSA6100A's measurement-centric user interface is specially designed to not only optimize parameters for any measurement combination selected by the user, but also manually adjust these control functions at any time. The RSA6100 series also includes the most frequently used functions in traditional spectrum analyzers, such as peak and average detection, waveform averaging, maximum hold, minimum hold, reference waveforms, and resolution bandwidth filters in various operating modes. The RSA6100A series uses a 10.4-inch XGA touch screen display, which provides mouse / keyboard and traditional front panel operation control functions. These instruments use the Windows XP operating system and provide a familiar interface for common tasks, such as file management, printing, copy / paste, import / export, tools, help, etc. Backpack Pump Sprayer,Pressure Pump Sprayer,Backpack Garden Sprayer,Commercial Backpack Sprayer Ningbo superclean environmental technology co.,ltd , https://www.supercleanmedical.com
Figure: Simplified block diagram of the RSA6100A series