JPS59208950A - Monitor circuit for cable transport line - Google Patents

Monitor circuit for cable transport line

Info

Publication number
JPS59208950A
JPS59208950A JP58083053A JP8305383A JPS59208950A JP S59208950 A JPS59208950 A JP S59208950A JP 58083053 A JP58083053 A JP 58083053A JP 8305383 A JP8305383 A JP 8305383A JP S59208950 A JPS59208950 A JP S59208950A
Authority
JP
Japan
Prior art keywords
monitor
line
frequency
repeater
oscillator
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
Application number
JP58083053A
Other languages
Japanese (ja)
Inventor
Tsunemichi Sasahara
笹原　恒道
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP58083053A priority Critical patent/JPS59208950A/en
Publication of JPS59208950A publication Critical patent/JPS59208950A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/403—Monitoring; Testing of relay systems with selective localization using different frequencies generated by local oscillators

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To omit a monitor line of a cable transport line by connecting an oscillator for repeater monitor frequency between the output of a pilot monitor device constituting a repeating amplifier part and the input of a line amplifier. CONSTITUTION:Oscillators 7 and 8 for repeater monitor frequency are inserted between pilot monitor devices 3 and 4 and line amplifiers 1 and 2, respectively. (In this case, an oscillator of <=12kHz is used with the oscillation frequency of the low group side with and oscillator of >=120kHz used with the oscillation frequency of the high group side, and these oscillators have oscillations when they receive normally a line monitor current and stops the oscillations when a fault occurs with reception of said monitor current.) As a result, the repeater monitor frequency can be transmitted to a manned monitor station of the remote side in the form of a repeating device after the monitor frequency is connected to a signal transmission band with inputs of amplifiers 1 and 2. Thus it is possible to obtain a repeating device monitor mechanism of a cable transport without using a different monitor line.

Description

【発明の詳細な説明】 本発明は短距離搬送多重通信回線として使用されている
ケーブル搬送回線の監視回路に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a monitoring circuit for cable carrier lines used as short-haul carrier multiplex communication lines.

従来よシケーブル搬送装置は群別２線方式による伝送方
式を用いており、送信及び受信の信号伝送周波数が異っ
ている。この送信、受信の周波数帯分離、結合は方向ｒ
波器により行っている。方向テ波器は低群側（低域Ｆ波
器）と高群側（高域ろ波器）との組合せ構成となってい
る。従来のケ示す。群別２線方式による所要信号伝送周
波数としては低群側は１２〜６０　ｋＨｚ１高群側は７
２〜１２０　ｋＨｚであシ、それぞれに線路監視電流と
して６０ｋＨｚ（低群側）、７２ｋＨｚ（高群ｇｌｌｌ
　）　；６’伝送されている。例えは低群側の帯域にて
ケーブル線路より受信しているとすると方向ｐ波器５に
て１２〜６０ｋＨｚの所要帯域を取り出し、ケーブル線
路長によシ損失を受けた伝送損失分を低群用線路増幅器
１によシ増幅補償をし方向Ｆ波器６を通してケーブル線
路を経て次の中継装置へと伝送される。この補償増幅さ
れた所要帯域内より線路監視電流６０ｋＨｚのみを低群
用ノ（イロット監視器３にて抽出し、規定レベルにある
かどうかを常時監視をしている。ケーブル搬送回線の中
継装置は線路損失的４０　ｄＢ　（１２０Ｈ４）毎に挿
入設置されるため約Ｉ　Ｑ　ｋｍ間隔にてタンデム接続
となっている。設置場所も屋外柱上、トンネル内、マン
ホール内等で、はとんどが無人であり、どの線路区間か
、どの中継装置かを判別するために従来は監視器３の出
力を所要信号伝送線路とは別の監視線路を使用して、そ
の情報を有人端局に伝送していた。Conventional cable transport devices use a two-wire group transmission system, and the signal transmission frequencies for transmission and reception are different. This transmission and reception frequency band separation and combination are performed in the direction r
This is done using a wave device. The directional wave filter has a combination configuration of a low group side (low frequency F wave device) and a high group side (high frequency filter). Conventional model shown. The required signal transmission frequency for the two-wire system by group is 12 to 60 kHz for the low group and 7 for the high group.
2 to 120 kHz, and 60 kHz (low group side) and 72 kHz (high group side) as track monitoring current, respectively.
); 6' is being transmitted. For example, if the signal is being received from a cable line in a band on the low group side, the required band of 12 to 60 kHz is extracted by the directional p-wave converter 5, and the transmission loss caused by the cable line length is reduced to a low group. The signal is amplified and compensated by the line amplifier 1, and then transmitted through the directional F-wave device 6 and the cable line to the next repeater. Only the line monitoring current of 60 kHz is extracted from this compensatory and amplified required band using the low group monitor 3, and is constantly monitored to see if it is at the specified level. They are inserted and installed every 40 dB (120H4) in terms of line loss, resulting in a tandem connection at intervals of about IQ km.The installation locations are outdoor poles, inside tunnels, inside manholes, etc., and are mostly unmanned. Conventionally, in order to determine which line section and which relay device the output of the monitor 3 is on, a monitoring line separate from the required signal transmission line is used to transmit the information to the manned terminal station. Ta.

従来のこの方法であれば信号伝送線路の外に余計に監視
線路を準俯せねはならない。With this conventional method, there is no need to lay down an additional monitoring line outside the signal transmission line.

本発明の目的はケーブル搬送回線の監視線路を省略する
監視回路を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a monitoring circuit that eliminates the monitoring line of a cable carrier line.

本発明のケーブル搬送回線の監視回路は、中継増幅部を
構成するパイロット監視器の出力と線路増幅器の入力と
の間に中継器監視周波数発振器を接続することを特徴と
する。The cable carrier line monitoring circuit of the present invention is characterized in that a repeater monitoring frequency oscillator is connected between the output of the pilot monitor constituting the repeater amplifier and the input of the line amplifier.

本発明の一実施例をブロック図で第２図に示す。An embodiment of the present invention is shown in a block diagram in FIG.

パイロット監視器３，４と線路増幅器１，２との間に中
継器監視周波数発振器７，８（低群側の発振周波数につ
いては１２ｋＨｚ以下の発振器、高群側の発振周波数は
１２０ｋＨｚ以上の発振器で線路監視電流正常受信時に
発振、異常時に発掘停止）を挿入することにより線路増
幅器１，２の入力で信号伝送帯域と結合されて中継装置
の情報として相手の有人監視局へと中継器監視周波数が
伝送できるものであり、別の監視線路を使用することな
くケーブル搬送回線の中継装置監視構成ができるもので
ある。Repeater monitoring frequency oscillators 7 and 8 are installed between the pilot monitors 3 and 4 and the line amplifiers 1 and 2 (an oscillator with an oscillation frequency of 12 kHz or less for the low group side and an oscillator of 120 kHz or more for the oscillation frequency on the high group side). By inserting a line monitoring current (oscillates when normal reception occurs, excavation stops when abnormality occurs), it is combined with the signal transmission band at the input of line amplifiers 1 and 2, and the repeater monitoring frequency is transmitted to the other manned monitoring station as relay equipment information. It can be transmitted, and a repeater monitoring configuration for cable carrier lines can be configured without using a separate monitoring line.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来例を示すプロ、り図および第２図は本発明
の一実施例を示すブロック図である。 図において １・・・・・・低群用線路増幅器、２・・・・・・高群
用線路増幅器、３・・・・・・低群用ノくイロ７）監視
器、４・・・・・・高群用パイロット監視器、５・・・
・・・方向ｐ波器、６・・・・・・方向ｐ波器、７・・
・・・・低群用中継器監視周波数発振器、８・・・・・
・高群用中継器監視周波数発振器。FIG. 1 is a diagram showing a conventional example, and FIG. 2 is a block diagram showing an embodiment of the present invention. In the figure, 1...Line amplifier for low group, 2...Line amplifier for high group, 3...Nokuiro for low group 7) Monitor, 4... ...High group pilot monitor, 5...
... Directional p-wave device, 6... Directional p-wave device, 7...
...Low group repeater monitoring frequency oscillator, 8...
・High group repeater monitoring frequency oscillator.

Claims (1)

【特許請求の範囲】[Claims] クープル搬送回転の中継増幅装置を構成する中継増幅部
に中継益監視周波数発振器を付加することを特徴とする
ケーブル搬送回線の監視回路。A monitoring circuit for a cable carrier line, characterized in that a repeater gain monitoring frequency oscillator is added to a repeater amplifier part constituting a coupler carrier rotation repeater amplifier device.
JP58083053A 1983-05-12 1983-05-12 Monitor circuit for cable transport line Pending JPS59208950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58083053A JPS59208950A (en) 1983-05-12 1983-05-12 Monitor circuit for cable transport line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58083053A JPS59208950A (en) 1983-05-12 1983-05-12 Monitor circuit for cable transport line

Publications (1)

Publication Number Publication Date
JPS59208950A true JPS59208950A (en) 1984-11-27

Family

ID=13791447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58083053A Pending JPS59208950A (en) 1983-05-12 1983-05-12 Monitor circuit for cable transport line

Country Status (1)

Country Link
JP (1) JPS59208950A (en)

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