一、概述此合成器的方框图示于图1。这种合成器的工作原理是众所周知的,不再详述,现在只介绍简单的工作过程及其特点。VCO的频率为140～200兆赫,间隔1兆赫一点。当需要其中某一波道时,只需要按下“波道选择”琴键开关,使可变分频器预置到所需的波道数,阶梯波发生器自动扫描,粗调 I. Overview The block diagram of this synthesizer is shown in Figure 1. The working principle of this synthesizer is well known, will not elaborate, and now only introduces a simple work process and its characteristics. The VCO frequency is 140 to 200 MHz with 1 MHz intervals. When one of these channels is required, simply press the “Channel Select” key switch to preset the variable divider to the desired channel number, the staircase generator automatically scans, the coarse