JPS5665234A - Loop test system - Google Patents
Loop test systemInfo
- Publication number
- JPS5665234A JPS5665234A JP14087079A JP14087079A JPS5665234A JP S5665234 A JPS5665234 A JP S5665234A JP 14087079 A JP14087079 A JP 14087079A JP 14087079 A JP14087079 A JP 14087079A JP S5665234 A JPS5665234 A JP S5665234A
- Authority
- JP
- Japan
- Prior art keywords
- loop test
- stop
- synchronous
- circuit
- control
- 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
Abstract
PURPOSE: To make it possible to very easily execute the control for the loop test, by detecting a position where a transmission error has occurred, making certain of the response whenever one character is transmitted.
CONSTITUTION: The sychronous state of a data of the transmitter/receiver circuit 2 is changed to the start-stop synchrnous system from the synchronous system only in case of the circuit loop test, by the command C1 from the control part 3. And the circuit 2 can transmit and receive a data by the start-stop synchronous system by using a clock of the frequency dividing ratio 1/1 of the circuits L1, L2, which is received from the synchronous MODEM1, and the synchronous system is changed to the start-stop system at the time of the loop test. In this way, the control for the loop test can be executed very easily by detecting a position where a transmission error has occurred, making certain of the response whenever one character is transmitted.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14087079A JPS5665234A (en) | 1979-10-31 | 1979-10-31 | Loop test system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14087079A JPS5665234A (en) | 1979-10-31 | 1979-10-31 | Loop test system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5665234A true JPS5665234A (en) | 1981-06-02 |
Family
ID=15278659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14087079A Pending JPS5665234A (en) | 1979-10-31 | 1979-10-31 | Loop test system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5665234A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009271594A (en) * | 2008-04-30 | 2009-11-19 | Fujitsu Ltd | Storage device |
-
1979
- 1979-10-31 JP JP14087079A patent/JPS5665234A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009271594A (en) * | 2008-04-30 | 2009-11-19 | Fujitsu Ltd | Storage device |
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