JPS5689064A - Testing apparatus - Google Patents

Testing apparatus

Info

Publication number
JPS5689064A
JPS5689064A JP16555779A JP16555779A JPS5689064A JP S5689064 A JPS5689064 A JP S5689064A JP 16555779 A JP16555779 A JP 16555779A JP 16555779 A JP16555779 A JP 16555779A JP S5689064 A JPS5689064 A JP S5689064A
Authority
JP
Japan
Prior art keywords
unit
testing apparatus
units
timing signal
cables
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
JP16555779A
Other languages
Japanese (ja)
Inventor
Yoshifumi Morioka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP16555779A priority Critical patent/JPS5689064A/en
Publication of JPS5689064A publication Critical patent/JPS5689064A/en
Pending legal-status Critical Current

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  • Tests Of Electronic Circuits (AREA)

Abstract

PURPOSE: To correct the delay time generated by connected cables, unit by unit, by transmitting a check timing signal up to the units in the same manner as for a control signal and returning it to the testing apparatus side.
CONSTITUTION: Units 14W16 packaged with printed circuit boards 25 as the devices to be tested are housed in an aging chamber 2 and the respective units 14W 16 are connected to a testing apparatus 1 by means of cables. After the test data are sent to each unit through a control line 30, they are returned to the testing apparatus 1, and the signal from a timing signal generating part 18 is also returned by passing through the inside of the units. By the timing signal thereof, the test data are compared in a comparator 20. Hence, it may be made into the check timing signal corrected of the delay time of the signals by the cables and the need for making the unit-by-unit timing signals may be eliminated.
COPYRIGHT: (C)1981,JPO&Japio
JP16555779A 1979-12-21 1979-12-21 Testing apparatus Pending JPS5689064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16555779A JPS5689064A (en) 1979-12-21 1979-12-21 Testing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16555779A JPS5689064A (en) 1979-12-21 1979-12-21 Testing apparatus

Publications (1)

Publication Number Publication Date
JPS5689064A true JPS5689064A (en) 1981-07-20

Family

ID=15814618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16555779A Pending JPS5689064A (en) 1979-12-21 1979-12-21 Testing apparatus

Country Status (1)

Country Link
JP (1) JPS5689064A (en)

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