JPS56140736A - Method and device for testing data transmission circuit line - Google Patents
Method and device for testing data transmission circuit lineInfo
- Publication number
- JPS56140736A JPS56140736A JP4284980A JP4284980A JPS56140736A JP S56140736 A JPS56140736 A JP S56140736A JP 4284980 A JP4284980 A JP 4284980A JP 4284980 A JP4284980 A JP 4284980A JP S56140736 A JPS56140736 A JP S56140736A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- data transmission
- disturbance
- measurement
- 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
- 230000005540 biological transmission Effects 0.000 title abstract 3
- 238000005259 measurement Methods 0.000 abstract 3
- 238000001514 detection method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/24—Testing correct operation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
PURPOSE:To detect the level difference between an AC signal and a disturbance signal as well as the code error factor, by measuring the code error factor after superposing the disturbance signal onto the AC signal received at the reception side of a data transmission circuit and then converting them into a digital signal. CONSTITUTION:At the reception side of the data transmission line 4, the AC signal is branched through the signal branching circuit 6 that is connected to the output terminal 5 of the circuit 4. Then the receiving level of the AC signal is measured by the level measuring circuit 7. This measurement is easy by an operation only at the reception side of the circuit 4 since an optional setting is possible by the result of measurement and the level control circuit 9. In such a way, the code error factor to be measured is deteriorated by adding the disturbance signal given from outside to the AC signal. Then the margin of the disturbance wave is measured. As a result, the time of measurement can be reduced. At the same time, the accuracy can be increased in the detection of faults.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4284980A JPS56140736A (en) | 1980-04-03 | 1980-04-03 | Method and device for testing data transmission circuit line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4284980A JPS56140736A (en) | 1980-04-03 | 1980-04-03 | Method and device for testing data transmission circuit line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56140736A true JPS56140736A (en) | 1981-11-04 |
Family
ID=12647448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4284980A Pending JPS56140736A (en) | 1980-04-03 | 1980-04-03 | Method and device for testing data transmission circuit line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56140736A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009513920A (en) * | 2005-10-28 | 2009-04-02 | レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | Method and apparatus for low NOx combustion |
-
1980
- 1980-04-03 JP JP4284980A patent/JPS56140736A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009513920A (en) * | 2005-10-28 | 2009-04-02 | レール・リキード−ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | Method and apparatus for low NOx combustion |
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