JPS5631258A - Line test system - Google Patents
Line test systemInfo
- Publication number
- JPS5631258A JPS5631258A JP10727479A JP10727479A JPS5631258A JP S5631258 A JPS5631258 A JP S5631258A JP 10727479 A JP10727479 A JP 10727479A JP 10727479 A JP10727479 A JP 10727479A JP S5631258 A JPS5631258 A JP S5631258A
- Authority
- JP
- Japan
- Prior art keywords
- line
- wire
- trouble
- circuits
- circuit
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
- H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Abstract
PURPOSE:To extend the range of line test, by separating and detecting currents of two-wire lines in the two-wire line storing circuit using the hybrid coil with Hall element. CONSTITUTION:The core of the hybrid coil constituting a two-wire.four-wire converting circuit is divided into two and is constituted as two independent transformers 10A and 10B. Hall element circuits 12A and 12B and amplifying circuits 13A and 13B are connected to respective cores. Consequently, currents of the A line and the B line of subscriber's line 2 can be separated and detected by circuits 12A, 12B, 13A and 13B. As a result, wide-range measurement for the ground-fault trouble, the short-circuit trouble, the induction trouble, and so on is possible.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10727479A JPS5631258A (en) | 1979-08-24 | 1979-08-24 | Line test system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10727479A JPS5631258A (en) | 1979-08-24 | 1979-08-24 | Line test system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5631258A true JPS5631258A (en) | 1981-03-30 |
Family
ID=14454902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10727479A Pending JPS5631258A (en) | 1979-08-24 | 1979-08-24 | Line test system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5631258A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01196950A (en) * | 1988-02-01 | 1989-08-08 | Nippon Telegr & Teleph Corp <Ntt> | Method and equipment for digital subscriber line |
JPH02121916U (en) * | 1989-03-16 | 1990-10-04 | ||
JPH03176674A (en) * | 1989-12-05 | 1991-07-31 | Hiroshi Seki | Checker of electric leak |
JPH0480024A (en) * | 1990-07-23 | 1992-03-13 | Shigehiro Tawada | Manufacture of core material of corrugated board |
-
1979
- 1979-08-24 JP JP10727479A patent/JPS5631258A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01196950A (en) * | 1988-02-01 | 1989-08-08 | Nippon Telegr & Teleph Corp <Ntt> | Method and equipment for digital subscriber line |
JPH02121916U (en) * | 1989-03-16 | 1990-10-04 | ||
JPH03176674A (en) * | 1989-12-05 | 1991-07-31 | Hiroshi Seki | Checker of electric leak |
JPH0480024A (en) * | 1990-07-23 | 1992-03-13 | Shigehiro Tawada | Manufacture of core material of corrugated board |
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