JP2578794B2 - Oscilloscope - Google Patents
OscilloscopeInfo
- Publication number
- JP2578794B2 JP2578794B2 JP62070622A JP7062287A JP2578794B2 JP 2578794 B2 JP2578794 B2 JP 2578794B2 JP 62070622 A JP62070622 A JP 62070622A JP 7062287 A JP7062287 A JP 7062287A JP 2578794 B2 JP2578794 B2 JP 2578794B2
- Authority
- JP
- Japan
- Prior art keywords
- sweep signal
- signal
- main
- sub
- waveform
- 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.)
- Expired - Fee Related
Links
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、オシロスコープに関する。Description: TECHNICAL FIELD The present invention relates to an oscilloscope.
従来の技術 従来、この種のオシロスコープは、オルタネート（AL
T）機能を有し、主掃引信号波形の指定された一部を時
間軸に沿って拡大して副掃引信号を生成し、主掃引信号
波形と拡大副掃引信号波形を交互に同一の増幅率（即
ち、同一の感度）で表示することができるように構成さ
れている。2. Description of the Related Art Conventionally, this type of oscilloscope has been known as an alternate (AL)
T) function, expands a specified part of the main sweep signal waveform along the time axis to generate a sub-sweep signal, and alternately applies the same amplification factor to the main sweep signal waveform and the expanded sub-sweep signal waveform (That is, the same sensitivity).
発明が解決しようとする問題点 しかしながら、上記従来のオシロスコープでは、主掃
引信号波形を時間軸に沿ってのみ拡大するものであり、
主掃引信号波形と副掃引信号波形を同一の感度でしか表
示できないために、測定信号の垂直方向の信号波形を正
確に観測することができないという問題点がある。Problems to be Solved by the Invention However, in the above-mentioned conventional oscilloscope, the main sweep signal waveform is enlarged only along the time axis.
Since the main sweep signal waveform and the sub-sweep signal waveform can be displayed only with the same sensitivity, there is a problem that the vertical signal waveform of the measurement signal cannot be accurately observed.
本発明は上記問題点に鑑み、垂直方向の信号波形を正
確に観測することができるオシロスコープを提供するこ
とを目的とする。The present invention has been made in view of the above problems, and has as its object to provide an oscilloscope that can accurately observe a signal waveform in the vertical direction.
問題点を解決するための手段 本発明は上記問題点を解決するために、主掃引信号及
び副掃引信号の波形を異なる増幅率で選択的に増幅する
ように構成したことを特徴とするものである。Means for Solving the Problems In order to solve the above problems, the present invention is characterized in that the waveforms of the main sweep signal and the sub-sweep signal are selectively amplified with different amplification factors. is there.
作用 したがって、本発明によれは、主掃引信号及び副掃引
信号の波形を交互に表示するとともに、主掃引信号もし
くは副掃引信号の何れか一方の所望の観測信号を大きい
増幅率で他方の信号を小さい増幅率で増幅することによ
り、所望の観測信号波形をより一層拡大して画面に表示
することができるため、観測信号の垂直方向の信号波形
を正確にかつ詳細に観測することができる。Operation Therefore, according to the present invention, the waveforms of the main sweep signal and the sub-sweep signal are alternately displayed, and the desired observation signal of either the main sweep signal or the sub-sweep signal is converted to the other signal with a large amplification factor. By amplifying with a small amplification factor, a desired observation signal waveform can be further enlarged and displayed on a screen, so that a vertical signal waveform of the observation signal can be observed accurately and in detail.
実施例 以下、図面を参照して本発明の実施例を説明する。第
１図は、本発明に係るオシロスコープの一実施例を示す
ブロック図、第２図は、第１図の垂直偏向増幅器の詳細
な回路図、第３図は、第１図のオシロスコープの主要信
号の波形図である。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of an oscilloscope according to the present invention, FIG. 2 is a detailed circuit diagram of the vertical deflection amplifier of FIG. 1, and FIG. 3 is a main signal of the oscilloscope of FIG. FIG.
第１図において、１は、測定信号の入力端子、２は、
入力端子１からの測定信号を増幅する前置増幅器、３
は、前置増幅器２により増幅された測定信号を遅延する
遅延線回路、４は、後述するように遅延線回路３からの
測定信号を切り換えパルスｅ、ｆにより増幅して主掃引
信号ａと副掃引信号ｂを選択的に増幅し、CRT（陰極線
管）５の垂直偏向板5Vを駆動する垂直偏向増幅器であ
る。In FIG. 1, 1 is an input terminal of a measurement signal, and 2 is
A preamplifier for amplifying the measurement signal from the input terminal 1, 3
Is a delay line circuit for delaying the measurement signal amplified by the preamplifier 2, and the measurement signal from the delay line circuit 3 is switched by switching pulses e and f, and the main sweep signal a This is a vertical deflection amplifier that selectively amplifies the sweep signal b and drives a vertical deflection plate 5V of a CRT (cathode ray tube) 5.
６は、前置増幅器２からの測定信号によりトリガ信号
を発生するトリガアンプ、７は、トリガアンプ６からの
トリガ信号により主掃引信号ａを発生し、また、不図示
の操作パネルを介して指定された増幅率により主掃引信
号ａと副掃引信号ｂを選択的に増幅するための切り換え
パルスｅ、ｆを発生する主水平掃引信号発生器、８は、
不図示の操作パネルを介して指定された遅延時間に応じ
て主掃引信号を遅延し、副掃引信号ｂを発生する副水平
掃引信号発生器、９は、主水平掃引信号発生器７及び副
水平掃引信号発生器８からの２種の掃引信号ａ、ｂを交
互に合成してCRT5の水平偏向板5Hを駆動する水平偏向増
幅器である。Reference numeral 6 denotes a trigger amplifier that generates a trigger signal based on a measurement signal from the preamplifier 2, and 7 generates a main sweep signal a based on a trigger signal from the trigger amplifier 6 and is designated via an operation panel (not shown). A main horizontal sweep signal generator 8 for generating switching pulses e and f for selectively amplifying the main sweep signal a and the sub-sweep signal b according to the set amplification factor;
A sub-horizontal sweep signal generator 9 for delaying the main sweep signal according to a delay time designated via an operation panel (not shown) and generating a sub-sweep signal b is provided with a main horizontal sweep signal generator 7 and a sub-horizontal signal. This is a horizontal deflection amplifier that alternately combines two types of sweep signals a and b from the sweep signal generator 8 to drive the horizontal deflection plate 5H of the CRT 5.
次に、第２図を参照して垂直偏向増幅器４を説明す
る。Next, the vertical deflection amplifier 4 will be described with reference to FIG.
この回路４は、増幅度の異なる差異増幅回路4aと41よ
り構成され、20、21は、第１図の遅延線回路３からの信
号の入力端子、α、βはそれぞれ、差動増幅回路4a、4b
を選択する切り換えパルスｅ、ｆの入力端子であり、切
り換えパルスｅ、ｆが入力端子α又はβに入力すると、
抵抗35、36とトランジスタ45より成る選択回路、又は抵
抗37、38とトランジスタ46より成る選択回路がオンにな
るとともに、差動増幅回路4a、4bの定電流源となる。This circuit 4 is constituted by difference amplifier circuits 4a and 41 having different amplification degrees, 20 and 21 are input terminals of a signal from the delay line circuit 3 in FIG. 1, and α and β are differential amplifier circuits 4a, respectively. , 4b
Are input terminals of the switching pulses e and f for selecting the following. When the switching pulses e and f are input to the input terminals α or β,
A selection circuit including the resistors 35 and 36 and the transistor 45 or a selection circuit including the resistors 37 and 38 and the transistor 46 is turned on, and serves as a constant current source for the differential amplifier circuits 4a and 4b.
差動増幅回路4aにおける41と42、差動増幅回路4bにお
ける43と44はそれぞれ、特性の等しい一対のトランジス
タであり、差動増幅回路4a、4bの増幅率はそれぞれ、抵
抗24、25、26及び27の合成値と、抵抗29、30及び31の合
成値により決定される。41 and 42 in the differential amplifier circuit 4a and 43 and 44 in the differential amplifier circuit 4b are a pair of transistors having the same characteristics, respectively, and the amplification factors of the differential amplifier circuits 4a and 4b are the resistances 24, 25 and 26, respectively. And 27 and the combined value of the resistors 29, 30 and 31.
尚、抵抗28、32はそれぞれ、差動増幅回路4a、4bが選
択されていない場合のプルアップ抵抗である。The resistors 28 and 32 are pull-up resistors when the differential amplifier circuits 4a and 4b are not selected.
次に、第３図を参照して上記構成に係る実施例の動作
を説明する。Next, the operation of the embodiment according to the above configuration will be described with reference to FIG.
測定信号は、入力端子１に入力して前置増幅器２によ
り増幅されると、垂直信号が遅延回路３により遅延さ
れ、掃引信号に対してタイミングが採られる。When the measurement signal is input to the input terminal 1 and amplified by the preamplifier 2, the vertical signal is delayed by the delay circuit 3, and the timing is set for the sweep signal.
他方、トリガアンプ５は、前置増幅器２からの測定信
号によりトリガ信号を出力し、主水平掃引信号発生器７
は、トリガ信号により主掃引信号（鋸歯状波形）ａを発
生し、副水平掃引信号発生器８は、操作パネルから指定
された遅延周期で主掃引信号ａを時間軸方向に拡大した
副掃引信号（鋸歯状波形）ｂを発生する。On the other hand, the trigger amplifier 5 outputs a trigger signal based on the measurement signal from the preamplifier 2 and outputs a trigger signal from the main horizontal sweep signal generator 7.
Generates a main sweep signal (sawtooth waveform) a by a trigger signal, and a sub-horizontal sweep signal generator 8 generates a sub-sweep signal obtained by enlarging the main sweep signal a in the time axis direction with a delay period designated from the operation panel. (Sawtooth waveform) b is generated.
主水平掃引信号発生器７内ではまた、オルタネート用
の掃引切り換え信号ｃを発生し、水平偏向増幅器９は、
主掃引信号ａと副掃引信号ｂが交互に表れるオルタネー
ト掃引信号（鋸歯状波形）ｄを発生する。The main horizontal sweep signal generator 7 also generates an alternate sweep switching signal c, and the horizontal deflection amplifier 9
An alternate sweep signal (sawtooth waveform) d in which the main sweep signal a and the sub-sweep signal b appear alternately is generated.
また、主水平掃引信号発生器７は、操作パネルを介し
て選択された主掃引信号ａと遅延掃引信号ｂの切り換え
信号ｅ、ｆを発生し、垂直偏向増幅器４（差動増幅回路
4a、4bの端子α、β）に出力する。The main horizontal sweep signal generator 7 generates switching signals e and f between the main sweep signal a and the delayed sweep signal b selected via the operation panel, and outputs the signals to the vertical deflection amplifier 4 (differential amplifier circuit).
4a, 4b terminals α, β).
主掃引信号ａは差動増幅回路4aによりその増幅率で増
幅され、副掃引信号ｂは差動増幅回路4bによりその増幅
率で増幅され、したがって、CRT5の画面に表示される波
形ｇは、主掃引信号ａと遅延掃引信号ｂが異なる増幅率
で増幅された波形となる。The main sweep signal a is amplified at the amplification rate by the differential amplifier circuit 4a, and the sub sweep signal b is amplified at the amplification rate by the differential amplifier circuit 4b. Therefore, the waveform g displayed on the screen of the CRT 5 is The sweep signal a and the delayed sweep signal b have waveforms amplified at different amplification factors.
反対に、切り換え信号ｅ、ｆを差動増幅回路4b、4aの
端子β、αに出力すれば、CRT5の画面に表示される波形
ｈは、主掃引信号ａと遅延掃引信号ｂが逆の増幅率で増
幅された波形となる。Conversely, if the switching signals e and f are output to the terminals β and α of the differential amplifier circuits 4b and 4a, the waveform h displayed on the screen of the CRT 5 will be an amplified signal in which the main sweep signal a and the delayed sweep signal b are inverted. It becomes a waveform amplified by the rate.
また、切り換え信号ｅのみ、又は切り換え信号ｆのみ
を差動増幅回路4a、4bの端子α、βに選択的に出力する
ように構成すれば、CRT5の画面に表示される波形は、主
掃引信号ａと遅延掃引信号ｂの一方が選択された方の増
幅率で増幅された波形となる。If only the switching signal e or only the switching signal f is selectively output to the terminals α and β of the differential amplifier circuits 4a and 4b, the waveform displayed on the screen of the CRT 5 becomes the main sweep signal. a and the delayed sweep signal b have a waveform amplified by the selected amplification factor.
尚、上記実施例では、主掃引信号ａと遅延掃引信号ｂ
を２つの差動増幅回路4a、4bにより選択的に増幅するよ
うに構成したが、増幅率の異なる増幅を多く設けること
により、主掃引信号ａと遅延掃引信号ｂを多段階に増幅
することができる。In the above embodiment, the main sweep signal a and the delayed sweep signal b
Is selectively amplified by the two differential amplifier circuits 4a and 4b. However, by providing many amplifications having different amplification factors, the main sweep signal a and the delayed sweep signal b can be amplified in multiple stages. it can.
発明の効果 以上説明したように、本発明は、主掃引信号及び副掃
引信号の波形を異なる増幅率で選択的に増幅するように
構成したので、主掃引信号及び副掃引信号の波形を交互
に表示するとともに、主掃引信号もしくは副掃引信号の
何れか一方の所望の観測信号を大きい増幅率で他方の信
号を小さい増幅率で増幅することにより、所望の観測信
号波形をより一層拡大して画面に表示することができる
ため、観測信号の垂直方向の信号波形を正確にかつ詳細
に観測することができるという効果を有する。Effects of the Invention As described above, the present invention is configured to selectively amplify the waveforms of the main sweep signal and the sub-sweep signal at different amplification factors. In addition to displaying, the desired observation signal waveform is further enlarged by amplifying the desired observation signal of either the main sweep signal or the sub-sweep signal with a large amplification factor and the other signal with a small amplification factor. Therefore, there is an effect that the signal waveform in the vertical direction of the observation signal can be observed accurately and in detail.
第１図は、本発明に係るオシロスコープの一実施例を示
すブロック図、第２図は、第１図の垂直偏向増幅器の詳
細な回路図、第３図は、第１図のオシロスコープの主要
信号の波形図である。 ４……垂直偏向増幅器、７……主水平掃引信号発生器、
８……副水平掃引信号発生器、９……水平偏向増幅器。FIG. 1 is a block diagram showing one embodiment of an oscilloscope according to the present invention, FIG. 2 is a detailed circuit diagram of the vertical deflection amplifier of FIG. 1, and FIG. 3 is a main signal of the oscilloscope of FIG. FIG. 4 ... vertical deflection amplifier, 7 ... main horizontal sweep signal generator,
8: Sub-horizontal sweep signal generator, 9: Horizontal deflection amplifier.
Claims (1)
と、前記主掃引信号を遅延して副掃引信号を発生する副
掃引信号発生器と、前記主掃引信号及び副掃引信号の波
形を交互に発生させて画面に表示する手段と、前記主掃
引信号及び副掃引信号の波形を異なる増幅率で選択的に
増幅する増幅手段とを備え、前記主掃引信号及び副掃引
信号の波形をそれぞれ異なる増幅率で画面に同時に表示
することを特徴とするオシロスコープ。1. A main sweep signal generator for generating a main sweep signal, a sub sweep signal generator for delaying the main sweep signal to generate a sub sweep signal, and a waveform of the main sweep signal and the sub sweep signal. Means for alternately generating and displaying on the screen; and amplifying means for selectively amplifying the waveforms of the main sweep signal and the sub-sweep signal at different amplification factors. An oscilloscope characterized by simultaneously displaying on the screen with different amplification factors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62070622A JP2578794B2 (en) | 1987-03-25 | 1987-03-25 | Oscilloscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62070622A JP2578794B2 (en) | 1987-03-25 | 1987-03-25 | Oscilloscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63236970A JPS63236970A (en) | 1988-10-03 |
| JP2578794B2 true JP2578794B2 (en) | 1997-02-05 |
Family
ID=13436898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62070622A Expired - Fee Related JP2578794B2 (en) | 1987-03-25 | 1987-03-25 | Oscilloscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2578794B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521304A (en) * | 1978-07-26 | 1980-02-15 | Hitachi Ltd | Elevator controller |
-
1987
- 1987-03-25 JP JP62070622A patent/JP2578794B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521304A (en) * | 1978-07-26 | 1980-02-15 | Hitachi Ltd | Elevator controller |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63236970A (en) | 1988-10-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |