JPS645544U - - Google Patents
Info
- Publication number
- JPS645544U JPS645544U JP9942287U JP9942287U JPS645544U JP S645544 U JPS645544 U JP S645544U JP 9942287 U JP9942287 U JP 9942287U JP 9942287 U JP9942287 U JP 9942287U JP S645544 U JPS645544 U JP S645544U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- test signal
- test
- common
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
Landscapes
- Time-Division Multiplex Systems (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Description
第１図はこの考案の一実施例による信号変換イ
ンタフエース部折返し試験方式を示すブロツク図
、第２図は従来の信号変換インタフエース部折返
し試験方式を示すブロツク図である。
１は折返し試験回路、２，３は信号変換インタ
フエース部、６，７は試験信号発信回路、９，１
０は試験信号受信回路、１２，１３は信号変換回
路、１４は共通試験信号発信回路、１５は応答信
号受信回路、１６，１７は共通試験信号受信回路
、１８，１９は応答信号発信回路。なお、図中、
同一符号は同一、又は相当部分を示す。
FIG. 1 is a block diagram showing a signal conversion interface section loopback test method according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional signal conversion interface section loopback test method. 1 is a return test circuit, 2 and 3 are signal conversion interface sections, 6 and 7 are test signal transmission circuits, 9 and 1
0 is a test signal receiving circuit, 12 and 13 are signal conversion circuits, 14 is a common test signal transmitting circuit, 15 is a response signal receiving circuit, 16 and 17 are common test signal receiving circuits, and 18 and 19 are response signal transmitting circuits. In addition, in the figure,
The same reference numerals indicate the same or corresponding parts.
Claims (1)
変換するため、それぞれの属性毎に用意された信
号変換インタフエース部と、この信号変換インタ
フエース部の正常性を試験する折返し試験回路を
備えたデジタル多重装置において、前記各信号変
換インタフエース部は、それが有する属性用の試
験信号を発信する試験信号発信回路と、信号変換
回路で折返された前記試験信号を受信する試験信
号受信回路と、共通試験信号を受信して前記試験
信号発信回路を起動する共通試験信号受信回路と
、前記試験信号を受信した前記試験信号受信回路
に起動されて応答信号を発信する応答信号発信回
路を備え、前記折返し試験回路は、前記共通試験
信号を発信する共通試験信号発信回路と、返送さ
れてくる前記応答信号を受信する応答信号受信回
路を備えたことを特徴とするデジタル多重装置。 In order to convert external signals with various attributes to an internal multiplex bus, the digital converter is equipped with a signal conversion interface section prepared for each attribute and a loopback test circuit to test the normality of this signal conversion interface section. In the multiplexing device, each signal conversion interface section has a common test signal transmission circuit that transmits a test signal for the attribute that it has, and a test signal reception circuit that receives the test signal returned by the signal conversion circuit. a common test signal receiving circuit that receives a test signal and activates the test signal transmitting circuit; and a response signal transmitting circuit that is activated by the test signal receiving circuit that receives the test signal and transmits a response signal; A digital multiplexing device characterized in that the test circuit includes a common test signal transmitting circuit for transmitting the common test signal and a response signal receiving circuit for receiving the returned response signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9942287U JPS645544U (en) | 1987-06-30 | 1987-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9942287U JPS645544U (en) | 1987-06-30 | 1987-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS645544U true JPS645544U (en) | 1989-01-12 |
Family
ID=31326566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9942287U Pending JPS645544U (en) | 1987-06-30 | 1987-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS645544U (en) |
-
1987
- 1987-06-30 JP JP9942287U patent/JPS645544U/ja active Pending
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