JPS62257222A - Connection part for communication equipment - Google Patents
Connection part for communication equipmentInfo
- Publication number
- JPS62257222A JPS62257222A JP61100111A JP10011186A JPS62257222A JP S62257222 A JPS62257222 A JP S62257222A JP 61100111 A JP61100111 A JP 61100111A JP 10011186 A JP10011186 A JP 10011186A JP S62257222 A JPS62257222 A JP S62257222A
- Authority
- JP
- Japan
- Prior art keywords
- digital transmission
- speed digital
- transmission line
- communication device
- lines
- 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
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Dc Digital Transmission (AREA)
- Communication Control (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
高速ディジタル伝送線路に接続する通信装置の接続部に
おいて、該高速ディジタル伝送線路を接続しない時は切
り替え部により該高速ディジタル伝送線路の公称インピ
ーダンス値を有する素子で終端されるようにすることで
、Ｓ／Ｎが良くてＮＴＴ株式会社の出力電圧の規格を満
足するようにしたものである。[Detailed Description of the Invention] [Summary] In a connection section of a communication device connected to a high-speed digital transmission line, when the high-speed digital transmission line is not connected, the switching section switches the element having the nominal impedance value of the high-speed digital transmission line to an element having the nominal impedance value of the high-speed digital transmission line. By terminating it, the S/N ratio is good and it satisfies the output voltage standards of NTT Corporation.
本発明は、例えば１．５４４Ｍｂｐｓの高速ディジタル
伝送線路に接続する通信装置の接続部の改良に関する。The present invention relates to an improvement in a connection section of a communication device that connects to a high-speed digital transmission line of, for example, 1.544 Mbps.
高速ディジタル伝送線路に接続する通信装置の１例を示
すと、第４図に示す如く、入力するＮｒ？Ｚのディジタ
ル信号を、コーグ１５にて、直流分の除去及びタイミン
グ情報を抽出し易くする為にＣＭＩ符号に変換し、ドラ
イバー１６にて増幅し、この出力を抵抗１８．１９及び
トランス２０を介して平衡形の高速ディジタル伝送線路
１．２に接続する如きものがある。An example of a communication device connected to a high-speed digital transmission line is as shown in FIG. The digital signal of Z is converted into a CMI code by a cog 15 in order to facilitate removal of the DC component and extraction of timing information, amplified by a driver 16, and this output is passed through a resistor 18, 19 and a transformer 20. There are some devices that are connected to a balanced high-speed digital transmission line 1.2.
このような通信装置の出力電圧の１規格として例えば、
高速ディジタル伝送線路１．２に接続した時はピーク値
で２．０Ｖ〜６．０■の間であり、出力端開放の時は６
．ＯＶ以下と定められている。For example, one standard for the output voltage of such a communication device is:
When connected to high-speed digital transmission line 1.2, the peak value is between 2.0V and 6.0V, and when the output end is open, it is 6.
．． It is defined as below OV.
通信装置では高速ディジタル伝送線路に接続した時の出
力のピーク値を２．０Ｖ〜６．０Ｖとすると、出力端開
放の時は通常４．０Ｖ〜１２．。When a communication device is connected to a high-speed digital transmission line, the peak output value is 2.0V to 6.0V, and when the output end is open, it is usually 4.0V to 12.0V. .
■となる。この為従来は高速ディジタル伝送線路に接続
した時のピーク値を２．０Ｖ〜３．０Ｖにおさえて、出
力端開放の時の電圧を６．０Ｖ以下になるようにしてい
た。■It becomes. For this reason, in the past, the peak value when connected to a high-speed digital transmission line was suppressed to 2.0V to 3.0V, and the voltage when the output end was open was set to 6.0V or less.
しかしながら、上記の方法では高速ディジタル伝送線路
に接続した時のピーク値が２．０Ｖ〜３゜０■と低い為
にＳ／Ｎが悪い問題点がある。However, the above method has a problem in that the S/N is poor because the peak value when connected to a high-speed digital transmission line is as low as 2.0V to 3.0V.
上記問題点は、第１図の原理回路図に示す如く、高速デ
ィジタル伝送線路１，２を接続しない時は切り替え部６
，７により該高速ディジタル伝送線路１．２の公称イン
ピーダンス値を有する素子３で終端されるようにした本
発明の通信装置の接続部により解決される。As shown in the principle circuit diagram of Fig. 1, the above problem arises when the switching unit 6
, 7 is solved by the connection of the communication device according to the invention, which is terminated with an element 3 having a nominal impedance value of the high-speed digital transmission line 1.2.
本発明によれば、出力端開放になっても、切り替え部６
．７により高速ディジタル伝送線路１゜２の公称インピ
ーダンス値を有する素子３で終端されるので、高速ディ
ジタル伝送線路１，２に接続されている時の通信装置４
の出力電圧を６． ０■にしても規格を満足出来るよう
になるので、Ｓ／Ｎを良くすることが出来るようになる
。According to the present invention, even if the output end is opened, the switching section 6
．． 7, the high-speed digital transmission line is terminated with an element 3 having a nominal impedance value of 1°2, so that the communication device 4 when connected to the high-speed digital transmission lines 1 and 2
The output voltage of 6. Since it becomes possible to satisfy the standard even if it is set to 0■, it becomes possible to improve the S/N ratio.
第２図は本発明の実施例の接続部の断面図である。 FIG. 2 is a sectional view of a connecting portion according to an embodiment of the present invention.
図中８は高速ディジタル伝送線路の公称インピーダンス
値１１０Ωを有する抵抗、９．．１０は燐青銅等の導電
材料で作られたバネ、１１．１２は銅等の４電材料で作
られた金具で抵抗８を接続しである。１３．１４は通信
装置の内部と接続する為のリード線を示す。In the figure, 8 is a resistor having a nominal impedance value of 110Ω for a high-speed digital transmission line; 9. ．． 10 is a spring made of a conductive material such as phosphor bronze, and 11.12 is a metal fitting made of a 4-electric material such as copper to which the resistor 8 is connected. 13 and 14 indicate lead wires for connection to the inside of the communication device.
この接続部を用い、これに高速ディジタル伝送線路１．
２を挿入すると、ハネ９．１０は矢印Ａ方向に拡げられ
るのでリード線１３．１４を介して通信装置と接続され
、バネ９．ＩＯと金具１１゜１２とは離される。Using this connection, connect the high-speed digital transmission line 1.
When spring 9.2 is inserted, spring 9.10 is expanded in the direction of arrow A and connected to the communication device via lead wire 13.14. The IO and the metal fittings 11 and 12 are separated.
一方高速ディジタル伝送線路１．２を抜き出力端開放と
すると、通信装置はバネ９．１０、金具１１．１２を介
して抵抗８にて終端される。従って、高速ディジタル伝
送線路１．２に接続された時の出力電圧を例えば６．Ｏ
Ｖにしても、出力端開放時も６．０■となるので、出力
電圧を６． ０■に出来Ｓ／Ｎを良くすることが出来る
。On the other hand, when the high-speed digital transmission line 1.2 is removed and the output end is opened, the communication device is terminated at the resistor 8 via the spring 9.10 and the metal fitting 11.12. Therefore, the output voltage when connected to the high-speed digital transmission line 1.2 is, for example, 6. O
Even if it is set to V, it will be 6.0■ even when the output terminal is open, so the output voltage will be set to 6.0. 0■, and the S/N can be improved.
第３図に他の実施例を示す。FIG. 3 shows another embodiment.
本例では電気的に切り替えを行うもので、受信信号の断
を断検出回路２３が検出するとスイッチ２１．２２によ
り抵抗８をドライバ１６に接続する様にしたものである
。In this example, switching is performed electrically, and when the disconnection detection circuit 23 detects disconnection of the received signal, the resistor 8 is connected to the driver 16 by the switches 21 and 22.
以上詳細に説明せる如く本発明の接続部を用いれば、高
速ディジタル伝送線路に接続する通信装置を、Ｓ／Ｎが
良く且つ出力電圧の規格を満足するようにすることが出
来る効果がある。As described in detail above, by using the connecting portion of the present invention, it is possible to make a communication device connected to a high-speed digital transmission line have a good S/N ratio and satisfy output voltage standards.
第１図は本発明の原理回路図、
第２図は本発明の実施例の接続部の断面図、第３図は本
発明の他の実施例を示す図、第４図は通信装置の１例の
回路図である。
図において、
１．２は高速ディジタル伝送線路、
３は公称インピーダンス値を有する素子、４は通信装置
、
５は接続部、
６．７は切り替え部、
８は抵抗、
９．１０はバネ、
１１．１２は金具、
１３．１４はリード線を示す。Fig. 1 is a circuit diagram of the principle of the present invention, Fig. 2 is a sectional view of a connecting part of an embodiment of the invention, Fig. 3 is a diagram showing another embodiment of the invention, and Fig. 4 is a diagram of a communication device. FIG. 3 is an example circuit diagram. In the figure, 1.2 is a high-speed digital transmission line, 3 is an element having a nominal impedance value, 4 is a communication device, 5 is a connection part, 6.7 is a switching part, 8 is a resistor, 9.10 is a spring, 11. 12 is a metal fitting, and 13 and 14 are lead wires.
Claims (1)
（４）の接続部（５）において、 該高速ディジタル伝送線路（１、２）を接続しない時は
切り替え部（６、７）により該高速ディジタル伝送線路
（１、２）の公称インピーダンス値を有する素子（３）
で終端されるようにしたことを特徴とする通信装置の接
続部。[Claims] In the connection part (5) of the communication device (4) connected to the high-speed digital transmission line (1, 2), when the high-speed digital transmission line (1, 2) is not connected, the switching part (6 , 7), the element (3) has a nominal impedance value of the high-speed digital transmission line (1, 2).
A connection part of a communication device, characterized in that the connection part is terminated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61100111A JPS62257222A (en) | 1986-04-30 | 1986-04-30 | Connection part for communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61100111A JPS62257222A (en) | 1986-04-30 | 1986-04-30 | Connection part for communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62257222A true JPS62257222A (en) | 1987-11-09 |
Family
ID=14265258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61100111A Pending JPS62257222A (en) | 1986-04-30 | 1986-04-30 | Connection part for communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62257222A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63299064A (en) * | 1987-05-29 | 1988-12-06 | Sony Corp | Connector for bus line |
| JPH03100386U (en) * | 1990-01-30 | 1991-10-21 |
-
1986
- 1986-04-30 JP JP61100111A patent/JPS62257222A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63299064A (en) * | 1987-05-29 | 1988-12-06 | Sony Corp | Connector for bus line |
| JPH03100386U (en) * | 1990-01-30 | 1991-10-21 |
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