JPS5886467A - Tester for logical circuit - Google Patents

Tester for logical circuit

Info

Publication number
JPS5886467A
JPS5886467A JP56184918A JP18491881A JPS5886467A JP S5886467 A JPS5886467 A JP S5886467A JP 56184918 A JP56184918 A JP 56184918A JP 18491881 A JP18491881 A JP 18491881A JP S5886467 A JPS5886467 A JP S5886467A
Authority
JP
Japan
Prior art keywords
line
stage
impedance
measuring
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.)
Pending
Application number
JP56184918A
Other languages
Japanese (ja)
Inventor
Yozo Machida
町田 要造
Shigeki Kurihara
栗原 繁樹
Akira Watanabe
彰 渡辺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ando Electric Co Ltd
Original Assignee
Ando Electric Co Ltd
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 by Ando Electric Co Ltd filed Critical Ando Electric Co Ltd
Priority to JP56184918A priority Critical patent/JPS5886467A/en
Publication of JPS5886467A publication Critical patent/JPS5886467A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00Error detection; Error correction; Monitoring
    • G06F11/28Error detection; Error correction; Monitoring by checking the correct order of processing

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE:To improve the accuracy of measurement by setting two lines for measurement, and using the same for forcing and sensing in the stage of measuring DC parameters and for impedance matching in the stage of function testing. CONSTITUTION:Lines 8, 9 having values twice the impedance Zo of a driver 4 are provided. A switch 6e is a switch for connecting the line 8 and the line 9, and is turned off in the stage of measuring measuring DC parameters and is turned on in the stage of function testing. Therefore, in the stage of measuring DC parameters, the line 8 is a forcing line and the line 9 is a sensing line. On the other hand, in the stage of function testing, the switch 6e is turned on; therefore the line 8 and the line 9 are paralleled, and the combined impedance thereof is made the same as the impedance Zo of the driver 4, thus the test signal is transmitted and received smoothly.

Description

【発明の詳細な説明】 (13発明の技術分野 この発明は、DCパラメータ測定器とファンクシ曽ンテ
スト用ドライバ、コンパレータを同じラインを用いて試
験される論理回路(DUT)に接続する試験装置につい
てのものである。
Detailed Description of the Invention (13) Technical Field of the Invention The present invention relates to a test device that connects a DC parameter measuring instrument, a funxion test driver, and a comparator to a logic circuit (DUT) to be tested using the same line. It is something.

(23従来技術 従来装置の構成例を第1図に示す。図で、1は試験さn
るDUT、2はDCパラメータ測定器のフォーシング端
子、5はDUT 1からのセンシング端子である。4は
ファンクションテスト用のドライバで、図示を省略した
パターン発生器からの信号により論理「1」レベルまた
は「0」レベルの信号をDUTlに加える。5aと5b
はDUTlからの信号を受けるファンクションテスト用
のコンパレータである。また、6a〜6dトそnぞれス
イッチで、DCパラメータ測定のときはスイッチ6aと
スイッチ6dを接にし、スイッチ6bとスイッチ6c′
fr断にする。ファンクシ冒ンテストのときは、この逆
にする。
(23 Prior Art An example of the configuration of a conventional device is shown in Fig. 1. In the figure, 1 indicates the test n
2 is the forcing terminal of the DC parameter measuring device, and 5 is the sensing terminal from DUT 1. Reference numeral 4 denotes a driver for a function test, which applies a logic "1" level or "0" level signal to the DUTl based on a signal from a pattern generator (not shown). 5a and 5b
is a comparator for function testing that receives a signal from DUTl. In addition, when measuring DC parameters, switch 6a to switch 6d should be connected, and switch 6b and switch 6c' should be connected.
FR cut off. When doing the funk test, do the opposite.

第1図の従来装置ではDCパラメータ測定とファンクシ
ョンテストをする場合、1つのライン7を共用し、スイ
ッチ6a〜6dの接断て信号の授受を行っている。
In the conventional device shown in FIG. 1, when performing DC parameter measurements and function tests, one line 7 is shared, and switches 6a to 6d are connected and disconnected to send and receive signals.

(3)従来技術の問題点 ドライバ4の出力をDUT 1に加える場合は、反射に
よる波形の乱nを防ぐためにドライバ4の出力インピー
ダンスzOと同じインピーダンスの2イン7を用いる。
(3) Problems with the Prior Art When applying the output of the driver 4 to the DUT 1, a 2-in-7 with the same impedance as the output impedance zO of the driver 4 is used to prevent waveform disturbance n due to reflection.

DCパラメータ測定のときは、DCパラメータ測定器の
フォーシング端子2とセンシング端子5はスイッチ6a
、6dにより接続されてからジイン7を通してDUTl
に接続される。このため、−2イン7の直流抵抗による
誤差が生ずる。
When measuring DC parameters, the forcing terminal 2 and sensing terminal 5 of the DC parameter measuring instrument are connected to the switch 6a.
, 6d and then through the input 7 to the DUTl.
connected to. Therefore, an error occurs due to the -2 in 7 DC resistance.

(4)発明の目的 この発明は、第1図の2イン7を2つのラインに分けて
DUTIに接続し、DCパラメータ測定のときは、この
ラインをそれぞれフォーシングラインとセンシングライ
ンとして使い、ラインの直流抵抗による誤差が生じない
ようにし、7アンクシ冒ンテストのときは、このライン
を並列に!!枕してドライバ4の出力インピーダンスZ
Oと同じインピーダンスのラインとして使用できるよう
にしたものである。
(4) Purpose of the Invention This invention divides the 2-in-7 shown in Fig. 1 into two lines and connects them to DUTI, and when measuring DC parameters, these lines are used as a forcing line and a sensing line, respectively. To avoid errors caused by DC resistance, connect these lines in parallel when performing a 7-input test. ! Output impedance Z of driver 4
It can be used as a line with the same impedance as O.

(5B  発明の実施例 この発明による実施例の構成図を第2図に示す。(5B Examples of the invention A configuration diagram of an embodiment according to the present invention is shown in FIG.

図で、1〜6dは第1・図と同じである。、8と9はト
ライバ4のインピーダンスZOの2倍の値をもつライン
で、第1図のライン7を2つに分けた形になっている。
In the figure, 1 to 6d are the same as in the first figure. , 8 and 9 are lines having a value twice the impedance ZO of the driver 4, and are formed by dividing the line 7 in FIG. 1 into two.

例えば、ドライバ4のインピーダンスが50Ωのときは
、ライン8とライン9のインピーダンスをそれぞれ10
0Ωにする。
For example, when the impedance of driver 4 is 50Ω, the impedance of line 8 and line 9 are each 10Ω.
Set it to 0Ω.

スイッチ6eはライン8とライン9を接続するスイッチ
で、DCパラメータ測定のときは断、ファンクシ譚ンテ
ストのときは接にする。
Switch 6e is a switch that connects line 8 and line 9, and is turned off when measuring DC parameters and turned on when performing a function test.

したがって、DCバ2メータ測定のときはライン8がフ
ォーシングラインとなり、ライン9がセンシングライン
となる。
Therefore, during DC meter measurement, line 8 becomes a forcing line and line 9 becomes a sensing line.

一方、ファンクシ曹ンテストのときは、スイッチ6Cが
接になるので、ライン8とライン9は並列になり、その
合成インピーダンスはドライバ4のインピーダンスZo
と同じになシ、テスト信号の授受が円滑に行セれる。
On the other hand, during the funxion test, the switch 6C is connected, so lines 8 and 9 are connected in parallel, and their combined impedance is equal to the impedance Zo of the driver 4.
Similarly, test signals can be sent and received smoothly.

1 (61発明の効果 この発明によnは、DUTlのパラメータ測定とファン
クションテストが、その目的に合った方法で接続される
ことになシ、DCパラメーター」定の際、ラインの直流
抵抗による誤差をなくすことができ、従来装置に対しD
Cパラメータの測定棺度を向上することができる。
1 (61 Effects of the Invention) According to this invention, the parameter measurement and function test of the DUTl are connected in a manner suitable for the purpose. D compared to conventional equipment.
The accuracy of C parameter measurement can be improved.

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

第1図は従来装置の一例、 第2図はこの発明による実施例の構成図。 1・・・・・・試験される論理回路(DUT )、2・
・・・・・DCパラメータ測定器のフォーシング端子。 5・・・・・・DUT 1からのセンシング端子、4・
・・・・・ファンクションテスト用のドライバ、5a・
5b・・・・・・DUTtからの信号を受けるファンク
ションテスト用のコンパレータ、6a〜6e・・・・・
・スイッチ。 7・・・・・・ライン、8書?・・・・・・ドライバ4
のインビダンスの2倍の値をもつライン。 代理人  弁理士  小俣欽町 第1図 第♀図
FIG. 1 is an example of a conventional device, and FIG. 2 is a configuration diagram of an embodiment according to the present invention. 1... Logic circuit to be tested (DUT), 2.
...Forcing terminal of DC parameter measuring instrument. 5... Sensing terminal from DUT 1, 4.
...Driver for function test, 5a.
5b... Comparator for function test receiving signal from DUTt, 6a to 6e...
·switch. 7...Line, 8 books?・・・・・・Driver 4
A line with a value twice the impedance of . Agent Patent Attorney Omata Kincho Figure 1 Figure ♀

Claims (1)

【特許請求の範囲】 1、  DCパラメータ測定器とファンクションテスト
用ドライバ、コンパレータを同じラインを用いてDUT
に接続する論理回路試験装置において、2Zoの特性イ
ンピーダンスをもつラインを2つ備え。 DCパラメータ測定のときは前記ラインの1つをフォー
シングラインにするとともに、前記ラインの他の1つを
センシングラインとし。 ファンクシ箇ンテストのときは前記ラインを並列に接続
し、Zoの特性インピーダンスラインとすることを特徴
とする論理回路試験装置。
[Claims] 1. A DC parameter measuring device, a function test driver, and a comparator are connected to the DUT using the same line.
The logic circuit test equipment connected to the circuit is equipped with two lines with a characteristic impedance of 2Zo. When measuring DC parameters, one of the lines is used as a forcing line, and the other line is used as a sensing line. 1. A logic circuit testing device characterized in that, during a function test, the lines are connected in parallel to form a Zo characteristic impedance line.
JP56184918A 1981-11-18 1981-11-18 Tester for logical circuit Pending JPS5886467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56184918A JPS5886467A (en) 1981-11-18 1981-11-18 Tester for logical circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56184918A JPS5886467A (en) 1981-11-18 1981-11-18 Tester for logical circuit

Publications (1)

Publication Number Publication Date
JPS5886467A true JPS5886467A (en) 1983-05-24

Family

ID=16161603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56184918A Pending JPS5886467A (en) 1981-11-18 1981-11-18 Tester for logical circuit

Country Status (1)

Country Link
JP (1) JPS5886467A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3426254B2 (en) * 1997-11-20 2003-07-14 株式会社アドバンテスト IC test method and IC test apparatus using this test method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5824797U (en) * 1981-08-07 1983-02-16 大阪機器製造株式会社 Internal valve type powder discharge valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5824797U (en) * 1981-08-07 1983-02-16 大阪機器製造株式会社 Internal valve type powder discharge valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3426254B2 (en) * 1997-11-20 2003-07-14 株式会社アドバンテスト IC test method and IC test apparatus using this test method

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