JPS5673946A - Loop constituting system for data transmission system - Google Patents
Loop constituting system for data transmission systemInfo
- Publication number
- JPS5673946A JPS5673946A JP15115379A JP15115379A JPS5673946A JP S5673946 A JPS5673946 A JP S5673946A JP 15115379 A JP15115379 A JP 15115379A JP 15115379 A JP15115379 A JP 15115379A JP S5673946 A JPS5673946 A JP S5673946A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- code
- terminal
- data transmission
- loop
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Abstract
PURPOSE:To achieve accurate loop constitution for tested terminal even if data transmission error is produced, by independently detecting address code and mode code. CONSTITUTION:When a signal is input to a terminal 301, first the loop constituting code formed at a scramble circuit 304 is output at an output terminal 308 via an AND circuit 3071 and an OR circuit 3074 according to the timing signal at a terminal 302 from a timer 303. After the transmission of the loop constituting code, the timer 303 opens the gate of an address code forming circuit 305, and the address code is output to an output terminal 308 via an AND circuit 3072 and the OR circuit 3074. Next, the timer 303 opens the gate of a mode code forming circuit 306 and outputs the mode code to the output terminal 308. Thus, accurate loop constitution can be made for the tested terminals.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15115379A JPS5673946A (en) | 1979-11-21 | 1979-11-21 | Loop constituting system for data transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15115379A JPS5673946A (en) | 1979-11-21 | 1979-11-21 | Loop constituting system for data transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5673946A true JPS5673946A (en) | 1981-06-19 |
JPS6239581B2 JPS6239581B2 (en) | 1987-08-24 |
Family
ID=15512508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15115379A Granted JPS5673946A (en) | 1979-11-21 | 1979-11-21 | Loop constituting system for data transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5673946A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62206946A (en) * | 1986-03-06 | 1987-09-11 | Nec Corp | Remote test circuit |
JPS62252246A (en) * | 1986-04-25 | 1987-11-04 | Nec Corp | Remote test circuit |
JPH05213251A (en) * | 1992-10-01 | 1993-08-24 | Yamaha Motor Co Ltd | Object containing device for scooter type vehicle |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0468214U (en) * | 1990-10-24 | 1992-06-17 |
-
1979
- 1979-11-21 JP JP15115379A patent/JPS5673946A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62206946A (en) * | 1986-03-06 | 1987-09-11 | Nec Corp | Remote test circuit |
JPS62252246A (en) * | 1986-04-25 | 1987-11-04 | Nec Corp | Remote test circuit |
JPH05213251A (en) * | 1992-10-01 | 1993-08-24 | Yamaha Motor Co Ltd | Object containing device for scooter type vehicle |
Also Published As
Publication number | Publication date |
---|---|
JPS6239581B2 (en) | 1987-08-24 |
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