JPH0227571U - - Google Patents

Info

Publication number
JPH0227571U
JPH0227571U JP10679588U JP10679588U JPH0227571U JP H0227571 U JPH0227571 U JP H0227571U JP 10679588 U JP10679588 U JP 10679588U JP 10679588 U JP10679588 U JP 10679588U JP H0227571 U JPH0227571 U JP H0227571U
Authority
JP
Japan
Prior art keywords
voltage
circuit
measurement mode
frequency
switch
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
Application number
JP10679588U
Other languages
Japanese (ja)
Other versions
JPH0733170Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1988106795U priority Critical patent/JPH0733170Y2/en
Publication of JPH0227571U publication Critical patent/JPH0227571U/ja
Application granted granted Critical
Publication of JPH0733170Y2 publication Critical patent/JPH0733170Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例に係わるデイジタル
マルチメータを原理的に示すブロツク図、第２図
は第１図の入力レベル調整回路を詳しく示す回路
図、第３図は一実施例のデイジタルマルチメータ
の前面パネルの構成を周波数測定値表示状態で示
す正面図、第４図は第３図のパネルを１０Ｖレン
ジ表示状態で示す正面図、第５図は周波数測定の
流れ図である。 １……入力端子、２……入力レベル調整回路、
２ａ……分圧回路、２ｂ……スイツチ回路、３…
…交流電圧測定回路、４……周波数測定回路、５
……スイツチ検出回路、６……コントロール回路
、７……表示器。 FIG. 1 is a block diagram showing the principle of a digital multimeter according to an embodiment of the present invention, FIG. 2 is a circuit diagram showing the input level adjustment circuit of FIG. 1 in detail, and FIG. FIG. 4 is a front view showing the configuration of the front panel of the multimeter in a frequency measurement value display state, FIG. 4 is a front view showing the panel of FIG. 3 in a 10V range display state, and FIG. 5 is a flowchart of frequency measurement. 1...Input terminal, 2...Input level adjustment circuit,
2a...Voltage dividing circuit, 2b...Switch circuit, 3...
...AC voltage measurement circuit, 4...Frequency measurement circuit, 5
...Switch detection circuit, 6...Control circuit, 7...Display device.

Claims (1)

【実用新案登録請求の範囲】 被測定電圧と被測定周波数信号とが選択的に入
力する入力端子と、 前記入力端子に結合された分圧抵抗と前記分圧
抵抗に接続された複数段の分圧比を得るための複
数の分圧比設定スイツチとの組み合せから成る入
力レベル調整回路と、 前記入力レベル調整回路を介して得られる信号
の電圧測定及び前記信号の周波数測定を行う電圧
及び周波数測定回路と、 前記電圧及び周波数測定回路を電圧測定モード
に動作させるか周波数測定モードに動作させるか
を示す信号を与えるための測定モード選択スイツ
チと、 前記電圧及び周波数測定回路から得られる測定
結果を表示するための表示器と、 を備えたデイジタルマルチメータにおいて、 前記分圧比設定スイツチのオン・オフ状態を検
出するスイツチ状態検出回路と、 前記スイツチ状態検出回路から得られるスイツ
チ状態を示す信号と前記測定モード選択スイツチ
の操作に対応して得られる前記周波数測定モード
を示す信号とに応答して、前記周波数測定モード
が選択された時点から一定時間内に前記入力レベ
ル調整回路におけるレベル調整の状態を前記表示
器に表示するためのコントロール回路と を設けたことを特徴とするデイジタルマルチメー
タ。[Claims for Utility Model Registration] An input terminal into which a voltage to be measured and a frequency signal to be measured are selectively input, a voltage dividing resistor coupled to the input terminal, and a plurality of stages of voltage dividing resistors connected to the voltage dividing resistor. an input level adjustment circuit consisting of a combination of a plurality of voltage division ratio setting switches for obtaining a voltage ratio; and a voltage and frequency measurement circuit that measures the voltage of a signal obtained through the input level adjustment circuit and the frequency of the signal. , a measurement mode selection switch for providing a signal indicating whether to operate the voltage and frequency measurement circuit in a voltage measurement mode or a frequency measurement mode; and for displaying measurement results obtained from the voltage and frequency measurement circuit. A digital multimeter comprising: a switch state detection circuit that detects the on/off state of the voltage division ratio setting switch; a signal indicating the switch state obtained from the switch state detection circuit and the measurement mode selection. In response to a signal indicating the frequency measurement mode obtained in response to the operation of a switch, the level adjustment state in the input level adjustment circuit is displayed on the display within a certain period of time from the time when the frequency measurement mode is selected. A digital multimeter characterized by being provided with a control circuit for displaying information.
JP1988106795U 1988-08-12 1988-08-12 Digital multimeter Expired - Lifetime JPH0733170Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988106795U JPH0733170Y2 (en) 1988-08-12 1988-08-12 Digital multimeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988106795U JPH0733170Y2 (en) 1988-08-12 1988-08-12 Digital multimeter

Publications (2)

Publication Number Publication Date
JPH0227571U true JPH0227571U (en) 1990-02-22
JPH0733170Y2 JPH0733170Y2 (en) 1995-07-31

Family

ID=31340629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988106795U Expired - Lifetime JPH0733170Y2 (en) 1988-08-12 1988-08-12 Digital multimeter

Country Status (1)

Country Link
JP (1) JPH0733170Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020187436A (en) * 2019-05-10 2020-11-19 オムロン株式会社 Signal measurement unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5554448A (en) * 1978-06-23 1980-04-21 Minolta Camera Co Ltd Setter for measurement range of measuring instrument
JPS5582057A (en) * 1978-12-15 1980-06-20 Seiko Epson Corp Multimeter with counter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5554448A (en) * 1978-06-23 1980-04-21 Minolta Camera Co Ltd Setter for measurement range of measuring instrument
JPS5582057A (en) * 1978-12-15 1980-06-20 Seiko Epson Corp Multimeter with counter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020187436A (en) * 2019-05-10 2020-11-19 オムロン株式会社 Signal measurement unit
WO2020230425A1 (en) * 2019-05-10 2020-11-19 オムロン株式会社 Signal measurement unit
CN113711283A (en) * 2019-05-10 2021-11-26 欧姆龙株式会社 Signal measuring unit

Also Published As

Publication number Publication date
JPH0733170Y2 (en) 1995-07-31

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