JPH0230657U - - Google Patents
Info
- Publication number
- JPH0230657U JPH0230657U JP10841788U JP10841788U JPH0230657U JP H0230657 U JPH0230657 U JP H0230657U JP 10841788 U JP10841788 U JP 10841788U JP 10841788 U JP10841788 U JP 10841788U JP H0230657 U JPH0230657 U JP H0230657U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- comparison circuit
- line
- communication line
- 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
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
Landscapes
- Monitoring And Testing Of Exchanges (AREA)
Description
第１図は本考案の実施例を示す図、第２図は第
１図の実施例の実装ならびに操作パネルの例を示
す斜視図、第３図は電圧比較回路の動作を説明す
る図、第４図は回線の相混を測定する手順を示す
図、第５図は回線の他絡を測定する手順を示す図
である。
Ｖｃｃ…電源、Ｓ１，Ｓ３…スイツチ、Ｓ２…
切替手段、Ｓ，Ｒ…回線、ＬＥＤ１〜ＬＥＤ５…
ＬＥＤランプ、ＩＣ１〜ＩＣ４…電圧比較回路、
Ｒ１〜Ｒ２１…抵抗、５１〜５４…出力端子。
FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a perspective view showing the implementation of the embodiment of FIG. 1 and an example of an operation panel, FIG. FIG. 4 is a diagram showing a procedure for measuring phase interference in a line, and FIG. 5 is a diagram showing a procedure for measuring cross-circuit in a line. Vcc...power supply, S1 , S3 ...switch, S2 ...
Switching means, S, R...line, LED1 to LED5...
LED lamp, IC1 to IC4...voltage comparison circuit,
R1 to R21 ...resistors, 51 to 54...output terminals.
Claims (1)
圧発生回路と、該電圧発生回路に生じた電圧と予
め定められた基準電圧とを比較する電圧比較回路
と、該電圧比較回路の出力端に設けられた表示器
と、前記電圧発生回路に測定項目に対応して前記
通信回線を切替・接続する切替手段とを有するこ
とを特徴とするラインチエツカー。 A voltage generation circuit that generates a voltage according to the conduction state of the communication line, a voltage comparison circuit that compares the voltage generated in the voltage generation circuit with a predetermined reference voltage, and a voltage comparison circuit provided at the output end of the voltage comparison circuit. 1. A line checker characterized in that the line checker comprises: a display device configured to display the voltage generating circuit; and switching means for switching and connecting the communication line to the voltage generating circuit in accordance with a measurement item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10841788U JPH0230657U (en) | 1988-08-18 | 1988-08-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10841788U JPH0230657U (en) | 1988-08-18 | 1988-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0230657U true JPH0230657U (en) | 1990-02-27 |
Family
ID=31343726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10841788U Pending JPH0230657U (en) | 1988-08-18 | 1988-08-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0230657U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5314406B2 (en) * | 1973-11-19 | 1978-05-17 |
-
1988
- 1988-08-18 JP JP10841788U patent/JPH0230657U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5314406B2 (en) * | 1973-11-19 | 1978-05-17 |
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