JPS54151074A - Miswiring inspection device - Google Patents
Miswiring inspection deviceInfo
- Publication number
- JPS54151074A JPS54151074A JP6041678A JP6041678A JPS54151074A JP S54151074 A JPS54151074 A JP S54151074A JP 6041678 A JP6041678 A JP 6041678A JP 6041678 A JP6041678 A JP 6041678A JP S54151074 A JPS54151074 A JP S54151074A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- tested
- series
- magnetic heads
- recorded
- 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
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
PURPOSE: To inspect for presence of miswiring in the length from plural magnetic heads to a record/playback selector switch accurately and in a short time, by applying discriminating signals to first and second magnetic heads simultaneously and alternately in a sequential manner.
CONSTITUTION: A magnetic tape for test 30 has a region 31 in which specified signals are recorded in the entire width thereof, and regions 33 and 35 in which the signals are recorded in the half width, being provided in first and second recording tracks 32 and 34, sequentially and repetitively. First and second magnetic heads 1, 4 send out two-series discriminating signals, when the loaded magnetic tape for test 30 is operated in playback mode, through switches 3, 6, and code signals to be tested of 2 series are made by a coding means. Using these code signals to be tested as inputs, a synchronizing means generates two-series reference signals,d and the code signals to be tested and the reference signals are inputted into a D flip-flop circuit 22 which is a detecting means. By detecting disagreement of the two signals, abnormality in wiring is detected by an output terminal Q.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6041678A JPS54151074A (en) | 1978-05-18 | 1978-05-18 | Miswiring inspection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6041678A JPS54151074A (en) | 1978-05-18 | 1978-05-18 | Miswiring inspection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54151074A true JPS54151074A (en) | 1979-11-27 |
JPS6244325B2 JPS6244325B2 (en) | 1987-09-19 |
Family
ID=13141558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6041678A Granted JPS54151074A (en) | 1978-05-18 | 1978-05-18 | Miswiring inspection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54151074A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60187914A (en) * | 1984-03-08 | 1985-09-25 | Fujitsu Ltd | Diagnostic method of magnetic head |
US5176845A (en) * | 1990-06-12 | 1993-01-05 | Canon Kabushiki Kaisha | Mesomorphic compound, liquid crystal composition, liquid crystal device, display apparatus and display method |
-
1978
- 1978-05-18 JP JP6041678A patent/JPS54151074A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60187914A (en) * | 1984-03-08 | 1985-09-25 | Fujitsu Ltd | Diagnostic method of magnetic head |
JPH0348572B2 (en) * | 1984-03-08 | 1991-07-24 | Fujitsu Ltd | |
US5176845A (en) * | 1990-06-12 | 1993-01-05 | Canon Kabushiki Kaisha | Mesomorphic compound, liquid crystal composition, liquid crystal device, display apparatus and display method |
Also Published As
Publication number | Publication date |
---|---|
JPS6244325B2 (en) | 1987-09-19 |
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