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应用一台频谱分析仪实际上能测量发射机和接收机的一切感兴趣的参数。频谱分析仪的特性主要取决于其振荡器和选频滤波器。本文把西德R/S公司的装有EZFU型超高频调谐器的分析仪EZF作为新型的频谱分析仪的例子来讲述,该机采用一个调整极快的变容二极管调谐振荡器和锐分辨滤波器。这样便能达到高精度的调谐和良好地分离电平差别较大的信号。EZF/EZFU系统的其它特点是:屏幕内映入频标和电平测试线,自动识别固有干扰积和显示宽度、分辨力与最小扫描时间之间的程序组合。
Using a spectrum analyzer can actually measure all parameters of interest to the transmitter and receiver. The characteristics of a spectrum analyzer depend mainly on its oscillator and frequency-selective filter. In this paper, the EZF analyzer with EZFU UHF tuner in West Germany R / S is described as an example of a new spectrum analyzer that uses a very fast varactor tuned oscillator with sharp resolution filter. In this way, high-precision tuning and good separation of signals with high level differences can be achieved. Other features of the EZF / EZFU system are the incorporation of frequency and level test leads into the screen, a program combination that automatically identifies the inherent interference product and display width, resolution, and minimum scan time.