| 直接式单片机扫频信号源 |
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| 引用本文： | 余佩英. 直接式单片机扫频信号源[J]. 工业控制计算机, 1998, 0(6): 60-62 |
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| 作者姓名： | 余佩英 |
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| 作者单位： | 南京机械高等专科学校计算机系!210042 |
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| 摘 要： | 本文介绍一种由四片７４１６７同步十进制系数乘法器构成的正弦波扫频信号发生器。频率范围０．１￣９９９９Ｈｚ，频率分辨率为０．１Ｈｚ。频率值，扫频方式和扫频速率均可由键盘输入。电路用５．１２ＭＨｚ的石英晶体振荡器作为主频发生器，采用了频率跟踪低通滤波器。其波形失真度很小，约为０．３％。
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| 关 键 词： | 直接式 频率合成器 扫频方式 单片机 扫频信号源 |
A Direct Sweep Signal Source Based on Single Chip Microcomputer |
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| Yu Peiying. A Direct Sweep Signal Source Based on Single Chip Microcomputer[J]. Industrial Control Computer, 1998, 0(6): 60-62 |
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| Authors: | Yu Peiying |
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| Abstract: | In this paper, a sine wave sweep signal generator is introduced, which is composed of 4 chips of synchronous decimal factor multiplier. The range of frequency is 0.1Hz~ 9999Hz, and the frequency resolution is 0.1Hz. The frequency value, sweep method and sweep rate can be input by keyboard. A quartz crystal oscillator with 5. 12MHz serves as a basic frequency generator in the circuit and a sweep tracking low-pass filter is also used. The degree of distortion of the wave - form is as little as about 0. 3 %. |
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| Keywords: | direct frequency synthesizer sweep method sweep rate sweep traking low-pass filter |
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