发明名称 |
Spectrum analyzer having enterable offsets and automatic display zoom |
摘要 |
An input signal is mixed with sampling signals from oscillators which vary the frequency of the sampling signal from a first frequency to a second frequency. The resulting Intermediate Frequency (IF) signal is processed and digital values are stored in a memory in response thereto. Waveforms are then displayed which correspond to these frequency and amplitude values. Various input and display circuits facilitate the display and interpretation of these waveforms.
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申请公布号 |
US4244024(A) |
申请公布日期 |
1981.01.06 |
申请号 |
US19780932691 |
申请日期 |
1978.08.10 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
MARZALEK, MICHAEL S.;WHEELWRIGHT, LYNN M. |
分类号 |
G01R23/16;G01R23/18;(IPC1-7):G01R23/00 |
主分类号 |
G01R23/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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