JPS6188337U - - Google Patents
Info
- Publication number
- JPS6188337U JPS6188337U JP17246184U JP17246184U JPS6188337U JP S6188337 U JPS6188337 U JP S6188337U JP 17246184 U JP17246184 U JP 17246184U JP 17246184 U JP17246184 U JP 17246184U JP S6188337 U JPS6188337 U JP S6188337U
- Authority
- JP
- Japan
- Prior art keywords
- level
- voltage
- signal
- waveform
- comparator
- 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.)
- Granted
Links
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Analogue/Digital Conversion (AREA)
- Manipulation Of Pulses (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Description
第１図および第２図はこの考案による波形整形
回路の実施例に係り、第１図はそのブロツク線図
、第２図は各部の信号波形説明図である。第３図
は従来の波形整形回路のブロツク線図、第４図は
その各部信号波形の説明図である。
図中、１０はコンパレータ、１１はマイクロコ
ンピユータ、１２はＤ／Ａ変換器である。
1 and 2 relate to an embodiment of the waveform shaping circuit according to this invention, FIG. 1 is a block diagram thereof, and FIG. 2 is an explanatory diagram of signal waveforms of each part. FIG. 3 is a block diagram of a conventional waveform shaping circuit, and FIG. 4 is an explanatory diagram of signal waveforms at various parts thereof. In the figure, 10 is a comparator, 11 is a microcomputer, and 12 is a D/A converter.
Claims (1)
、この矩形波状信号から上記被測定線路の信号周
波数を求める周波数測定回路における波形整形回
路であつて、 (a) 上記被測定線路の信号電圧が一方の入力端
に加えられ、他方の入力端には基準電圧が加えら
れるコンパレータと、 (b) 該コンパレータから出力される矩形波状信
号の高電位電圧と低電位電圧に対応してＬレベル
（又はＨレベル）と、Ｈレベル（又はＬレベル）
のデイジタル信号を形成するカウンタを含むマイ
クロコンピユータと、 (c) 該マイクロコンピユータから送出される上
記Ｌレベル又はＨレベルのデイジタル信号をアナ
ログ電圧に変換し、上記コンパレータから出力さ
れる矩形波状信号の高電位電圧と低電位電圧とに
関連してその基準電圧を交叉にＬレベルとＨレベ
ルに切り換えるＤ／Ａ変換器とを備えていること
を特徴とする周波数測定回路における波形整形回
路。[Claims for Utility Model Registration] A waveform shaping circuit in a frequency measuring circuit that converts a signal voltage waveform of a line under test into a rectangular waveform and determines the signal frequency of the line under test from this rectangular waveform signal, comprising: (a) a comparator to which the signal voltage of the line under test is applied to one input terminal and a reference voltage to the other input terminal; (b) high potential voltage and low potential voltage of the rectangular wave signal output from the comparator; L level (or H level) and H level (or L level) corresponding to
(c) converting the L level or H level digital signal sent from the microcomputer into an analog voltage, and converting the high level of the rectangular wave signal output from the comparator into 1. A waveform shaping circuit in a frequency measurement circuit, comprising a D/A converter that switches a reference voltage crosswise between an L level and an H level in relation to a potential voltage and a low potential voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984172461U JPH062343Y2 (en) | 1984-11-14 | 1984-11-14 | Waveform shaping circuit for frequency measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984172461U JPH062343Y2 (en) | 1984-11-14 | 1984-11-14 | Waveform shaping circuit for frequency measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6188337U true JPS6188337U (en) | 1986-06-09 |
| JPH062343Y2 JPH062343Y2 (en) | 1994-01-19 |
Family
ID=30730125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984172461U Expired - Lifetime JPH062343Y2 (en) | 1984-11-14 | 1984-11-14 | Waveform shaping circuit for frequency measurement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH062343Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54157530U (en) * | 1978-04-24 | 1979-11-01 | ||
| JPS5817720A (en) * | 1981-07-23 | 1983-02-02 | Nippon Telegr & Teleph Corp <Ntt> | Signal detecting circuit |
-
1984
- 1984-11-14 JP JP1984172461U patent/JPH062343Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54157530U (en) * | 1978-04-24 | 1979-11-01 | ||
| JPS5817720A (en) * | 1981-07-23 | 1983-02-02 | Nippon Telegr & Teleph Corp <Ntt> | Signal detecting circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH062343Y2 (en) | 1994-01-19 |
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