JPS61173018U - - Google Patents
Info
- Publication number
- JPS61173018U JPS61173018U JP5589685U JP5589685U JPS61173018U JP S61173018 U JPS61173018 U JP S61173018U JP 5589685 U JP5589685 U JP 5589685U JP 5589685 U JP5589685 U JP 5589685U JP S61173018 U JPS61173018 U JP S61173018U
- Authority
- JP
- Japan
- Prior art keywords
- measuring instrument
- reference voltage
- converter
- signal
- adapter
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
添付図面はこの考案をデイジタルマルチメータ
による抵抗測定に適用した場合の一実施例を示す
ブロツク線図である。
図中、１はデイジタルマルチメータ、２はアダ
プタ、５は基準電圧源、６はＡ／Ｄコンバータ、
７は切換器、８はアンド回路、１０は発光ダイオ
ード、１３は直流電源、１５は発絡片、２０は温
度センサ、２１は補正信号発生回路である。
The accompanying drawing is a block diagram showing an embodiment of this invention applied to resistance measurement using a digital multimeter. In the figure, 1 is a digital multimeter, 2 is an adapter, 5 is a reference voltage source, 6 is an A/D converter,
7 is a switching device, 8 is an AND circuit, 10 is a light emitting diode, 13 is a DC power supply, 15 is a switching piece, 20 is a temperature sensor, and 21 is a correction signal generation circuit.
Claims (1)
電圧を供給する基準電圧源とを含む測定器本体と
、該測定器本体に着脱可能に接続される温度セン
サ等のアダプタ類とを備えてなり、測定項目によ
り上記アダプタ類を上記測定器本体に接続して被
測定信号の特性を補正しながら測定し得るデイジ
タル計測器において、 上記測定器本体には、上記Ａ／Ｄコンバータと
上記基準電圧源との間に介装された切換手段と、
該切換手段に切換制御信号を出力するゲート回路
と、該ゲート回路の上記切換制御信号に応じて点
灯もしくは消灯する表示素子とが設けられていて
、上記切換手段は、上記基準電圧源に接続された
一方の入力端子と、上記アダプタ類が上記測定器
本体に接続される際そのアダプタ類に内蔵されて
いる補正信号発生回路に接続される他方の入力端
子と、上記Ａ／Ｄコンバータの基準電圧入力端に
接続されていて上記ゲート回路からの切換制御信
号により上記入力端子のいずれか一方に選択的に
切り換えられるスイツチ回路とを備え、 上記ゲート回路は、人的操作により切換えられ
るスイツチを介して加えられる信号と、上記アダ
プタ類に設けられている短絡片を介して測定器本
体側から加えられる信号とのアンド条件により動
作する論理回路からなることを特徴とするデイジ
タル計測器。[Claims for Utility Model Registration] A measuring instrument body including an A/D converter and a reference voltage source that supplies a reference voltage to the A/D converter, and a temperature sensor etc. that is detachably connected to the measuring instrument body. A digital measuring instrument that can measure while correcting the characteristics of the signal to be measured by connecting the adapters to the measuring instrument main body depending on the measurement item, the measuring instrument main body having the above A/ a switching means interposed between the D converter and the reference voltage source;
A gate circuit that outputs a switching control signal to the switching means, and a display element that turns on or off according to the switching control signal of the gate circuit are provided, and the switching means is connected to the reference voltage source. one input terminal, the other input terminal that is connected to the correction signal generation circuit built into the adapter when the adapter is connected to the measuring instrument body, and the reference voltage of the A/D converter. a switch circuit connected to the input terminal and selectively switched to one of the input terminals by a switching control signal from the gate circuit; A digital measuring instrument comprising a logic circuit that operates according to an AND condition between an applied signal and a signal applied from the measuring instrument main body side via a shorting piece provided on the adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5589685U JPH0421062Y2 (en) | 1985-04-15 | 1985-04-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5589685U JPH0421062Y2 (en) | 1985-04-15 | 1985-04-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61173018U true JPS61173018U (en) | 1986-10-28 |
| JPH0421062Y2 JPH0421062Y2 (en) | 1992-05-14 |
Family
ID=30579000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5589685U Expired JPH0421062Y2 (en) | 1985-04-15 | 1985-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0421062Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006250549A (en) * | 2005-03-08 | 2006-09-21 | Hioki Ee Corp | Insulation resistance tester |
| JP2012027027A (en) * | 2010-07-26 | 2012-02-09 | Mettler-Toledo Thornton Inc | Calibration of conductivity measurement system |
-
1985
- 1985-04-15 JP JP5589685U patent/JPH0421062Y2/ja not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006250549A (en) * | 2005-03-08 | 2006-09-21 | Hioki Ee Corp | Insulation resistance tester |
| JP4515940B2 (en) * | 2005-03-08 | 2010-08-04 | 日置電機株式会社 | Insulation resistance tester |
| JP2012027027A (en) * | 2010-07-26 | 2012-02-09 | Mettler-Toledo Thornton Inc | Calibration of conductivity measurement system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0421062Y2 (en) | 1992-05-14 |
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