JPS6276669U - - Google Patents
Info
- Publication number
- JPS6276669U JPS6276669U JP16889285U JP16889285U JPS6276669U JP S6276669 U JPS6276669 U JP S6276669U JP 16889285 U JP16889285 U JP 16889285U JP 16889285 U JP16889285 U JP 16889285U JP S6276669 U JPS6276669 U JP S6276669U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signal
- reference time
- local oscillation
- oscillation signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000010355 oscillation Effects 0.000 claims 4
- 238000005259 measurement Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
Description
第１図はこの考案による周波数測定装置の一例
を示すブロツク図、第２図はその動作の説明に供
するための各部のタイムチヤート、第３図はこの
考案装置の他の例における動作の説明に供するた
めのタイムチヤート、第４図は従来の周波数測定
装置を示すブロツク図、第５図は第４図の装置の
動作を説明するためのタイムチヤートである。
１１：入力端子、１２：周波数変換器、１３：
局部信号発振器、２７：基準時間発生回路、２８
：検波器、３５：制御演算器、３６：選択回路、
３８：カウンタ、３９：スイツチ制御回路。
Fig. 1 is a block diagram showing an example of the frequency measuring device according to this invention, Fig. 2 is a time chart of each part to explain its operation, and Fig. 3 is a diagram showing the operation of another example of the device of this invention. FIG. 4 is a block diagram showing a conventional frequency measuring device, and FIG. 5 is a time chart for explaining the operation of the device shown in FIG. 11: Input terminal, 12: Frequency converter, 13:
Local signal oscillator, 27: Reference time generation circuit, 28
: Detector, 35: Control calculator, 36: Selection circuit,
38: Counter, 39: Switch control circuit.
Claims (1)
号が供給され、その入力信号と局部発振信号及び
その高調波信号との周波数混合を行う周波数変換
器と、 一定の基準時間を発生する基準時間発生回路と
、 上記周波数変換器の出力信号と上記局部発振器
の局部発振信号とを選択する選択手段と、 その選択手段により選択された信号を上記基準
時間発生回路よりの基準時間だけ計数して周波数
を測定するカウンタと、 そのカウンタによる周波数測定を上記局部発振
信号及び上記周波数変換器の出力信号についてそ
れぞれ少くとも２回ずつ行い、これらの周波数測
定結果から上記入力信号の周波数を算出する制御
演算手段とを具備する周波数測定装置。[Claims for Utility Model Registration] A local oscillator whose frequency can be swept controlled, a local oscillation signal from the local oscillator and an input signal are supplied, and frequency mixing of the input signal, the local oscillation signal, and its harmonic signal is performed. a reference time generation circuit that generates a constant reference time; a selection means for selecting an output signal of the frequency converter and a local oscillation signal of the local oscillator; and a signal selected by the selection means. a counter that measures the frequency by counting the reference time from the reference time generation circuit, and the frequency measurement by the counter is performed at least twice each for the local oscillation signal and the output signal of the frequency converter, and these A frequency measuring device comprising: control calculation means for calculating the frequency of the input signal from the frequency measurement result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16889285U JPS6276669U (en) | 1985-11-01 | 1985-11-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16889285U JPS6276669U (en) | 1985-11-01 | 1985-11-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6276669U true JPS6276669U (en) | 1987-05-16 |
Family
ID=31102194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16889285U Pending JPS6276669U (en) | 1985-11-01 | 1985-11-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6276669U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5219263B2 (en) * | 1973-08-16 | 1977-05-26 | ||
| JPS5849827A (en) * | 1981-09-19 | 1983-03-24 | Rinnai Corp | Combustion controller |
-
1985
- 1985-11-01 JP JP16889285U patent/JPS6276669U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5219263B2 (en) * | 1973-08-16 | 1977-05-26 | ||
| JPS5849827A (en) * | 1981-09-19 | 1983-03-24 | Rinnai Corp | Combustion controller |
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