JPS59183665U - Logic probe with logic status indicator light - Google Patents
Logic probe with logic status indicator lightInfo
- Publication number
- JPS59183665U JPS59183665U JP7705683U JP7705683U JPS59183665U JP S59183665 U JPS59183665 U JP S59183665U JP 7705683 U JP7705683 U JP 7705683U JP 7705683 U JP7705683 U JP 7705683U JP S59183665 U JPS59183665 U JP S59183665U
- Authority
- JP
- Japan
- Prior art keywords
- logic
- impedance converter
- probe
- logic state
- output
- 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
- 239000000523 sample Substances 0.000 title claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のロジックプローブの構成図、第２図は本
考案の実施例の構成図である。
図面において１１は入力部、１２はスレッショルドコン
パレータ、１３はバッファ、１４はＬＥＤドライバ、１
５はＬＥＤランプ、１６は電流制限用の抵抗である。FIG. 1 is a block diagram of a conventional logic probe, and FIG. 2 is a block diagram of an embodiment of the present invention. In the drawing, 11 is an input section, 12 is a threshold comparator, 13 is a buffer, 14 is an LED driver, 1
5 is an LED lamp, and 16 is a current limiting resistor.
Claims (1)
ザ等の測定器の論理状態入力部において、入力保護回路
とこれに、接続′されたＦＥＴもしくは集積回路による
インピーダンス変換器と前記インジ−タンス変換器に接
続され、あらかじめ一定電圧に設定されたスレッショル
ドレベルと前記インピーダンス変換器の出力信号とを比
較して０″又は１″の論理状態信号に変換すると柔ろの
スレッショルドコンパレータ、もしくは前記インピーダ
ンス変換器と、前記スレッショルドコンパレータとをか
ねた集積回路と、その出力である前記論理状態信号を入
力とし、前記論理状態信号の状態に対応して点滅するＬ
ＥＤランプをドライブするＬＥＤドライバと、この出力
に接続される前記ＬＥＤランプとから構成されるロジッ
ク状態表示ランプ、のついたロジックプローブ。In the logic state input section of a measuring instrument such as a logic analyzer or a microprocessor analyzer, an input protection circuit is connected to an impedance converter made of an FET or an integrated circuit, and an impedance converter is connected to the impedance converter. Comparing the output signal of the impedance converter with the threshold level set in the voltage and converting it into a logic state signal of 0'' or 1'', a soft threshold comparator or the impedance converter and the threshold comparator are connected. An L that receives as input the integrated circuit and the logic state signal that is its output, and blinks in response to the state of the logic state signal.
A logic probe with a logic status display lamp consisting of an LED driver that drives an ED lamp and the LED lamp connected to the output of the LED driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7705683U JPS59183665U (en) | 1983-05-24 | 1983-05-24 | Logic probe with logic status indicator light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7705683U JPS59183665U (en) | 1983-05-24 | 1983-05-24 | Logic probe with logic status indicator light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59183665U true JPS59183665U (en) | 1984-12-06 |
Family
ID=30207102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7705683U Pending JPS59183665U (en) | 1983-05-24 | 1983-05-24 | Logic probe with logic status indicator light |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59183665U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5151651U (en) * | 1974-10-17 | 1976-04-20 | ||
| JPS57191575A (en) * | 1981-05-15 | 1982-11-25 | Tektronix Inc | Input device for logic-analyzer |
-
1983
- 1983-05-24 JP JP7705683U patent/JPS59183665U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5151651U (en) * | 1974-10-17 | 1976-04-20 | ||
| JPS57191575A (en) * | 1981-05-15 | 1982-11-25 | Tektronix Inc | Input device for logic-analyzer |
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