JPS59171870A - Remote measuring system - Google Patents

Remote measuring system

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Publication number
JPS59171870A
JPS59171870A JP58047391A JP4739183A JPS59171870A JP S59171870 A JPS59171870 A JP S59171870A JP 58047391 A JP58047391 A JP 58047391A JP 4739183 A JP4739183 A JP 4739183A JP S59171870 A JPS59171870 A JP S59171870A
Authority
JP
Japan
Prior art keywords
terminal station
terminal
signal
frequency
station
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
JP58047391A
Other languages
Japanese (ja)
Inventor
Yoji Yamamoto
洋司 山本
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP58047391A priority Critical patent/JPS59171870A/en
Publication of JPS59171870A publication Critical patent/JPS59171870A/en
Pending legal-status Critical Current

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  • Monitoring And Testing Of Transmission In General (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

PURPOSE:To facilitate the automatic measurement of the transmitting characteristics of a transmission line while simply taking synchronism, by placing an oscillator and a selection level meter to one terminal station. CONSTITUTION:A signal having frequency F1 is inputted to the transmitting terminal SIN of a terminal station TA. The receiving signal from the terminal station TA is inputted to the transmitting terminal of a terminal station TB at a constant level by the action of the stabilizer STB used in the terminal station TB. The signal having frequency f1 is measured at the receiving terminal (ROUT) of the terminal station TA by a selection level meter SLM and, when this level is set to La, Lb-La comes to transmitting characteristics to the frequency f1 of a transmission line D and, therefore, transmitting characteristics to each frequency can be measured by successively changing the frequency f1.

Description

【発明の詳細な説明】 （ａ）０発明の技術分野 本発明は二つの端局間を結ぶ伝送路の伝送特性を該端局
にて測定する遠隔測定方式に係り、特に一方の端局にて
該伝送路の伝送特性を測定出来る様にした遠隔測定方式
に関するものである。Detailed Description of the Invention (a) 0 Technical Field of the Invention The present invention relates to a telemetry method for measuring the transmission characteristics of a transmission path connecting two terminal stations at the terminal station. The present invention relates to a remote measurement method that can measure the transmission characteristics of the transmission line.

（ｂ）、従来技術と問題点 第１図は局間の伝送路の伝送特性を測定する従来の一実
施例を示すブロック図で図中、ＴＡは端局Ａ、ＴＢは端
局Ｂ、Ｏ３Ｃは可変周波数発振器、Ｓ　Ｔ　Ｂはスタビ
ライザ、ＳＬＭは選択レベル・メータ、Ｃ及びＤば夫々
端局ＴＡ一端局ＴＢ、端局Ｔ’Ｂ−一端局１゛Ａの伝送
路、ＲＥＰは中継器である。(b), Prior Art and Problems Figure 1 is a block diagram showing a conventional example of measuring the transmission characteristics of a transmission path between stations. In the figure, TA is terminal station A, TB is terminal station B, O3C is a variable frequency oscillator, STB is a stabilizer, SLM is a selection level meter, C and D are transmission lines from terminal station TA to terminal station TB, terminal station T'B to terminal station 1A, and REP is a repeater. be.

以下第１図に従って従来の遠隔測定方式の一実施例を詳
細に説明する。An embodiment of a conventional telemetry system will be described in detail below with reference to FIG.

今グｊ５局ＴＢ−、ｊ：″１］１局Ｔへの伝送特性を測
定する場合に就いて述べる。Now, a case will be described in which the transmission characteristics to one station T are measured.

■端局］゛Ｂの送信端（Ｓ　Ｉ　Ｎ）に可変周波数発振
器○ＳＣの信号ｆ１をＳＴＢ回路を経由して、レベルＬ
ｂ印加する。■Terminal station] The signal f1 of the variable frequency oscillator ○SC is sent to the transmitting end (S I N) of B via the STB circuit, and the level L
Apply b.

■端局ＴＡの受信端（ＲＯＵＴ）にで、選択レベル・メ
ータＳＬＭにより、受信レヘルＬａを測定する。(2) At the receiving end (ROUT) of the terminal station TA, the receiving level La is measured by the selected level meter SLM.

■Ｌｂ−Ｌａが周波数ｆ１に於ける端局Ｔ　Ｂ一端局Ｔ
Ａの伝送特性である。■Terminal station T where Lb-La is frequency f1 B one terminal station T
This is the transmission characteristic of A.

上記の方法では、可変周波数発振器ＯＳＣと選択レヘル
・メータＳＬＭとが別の局に在る為、測定周波数を連絡
し、互いに同期して測定する必要があり、大変不便であ
る。In the above method, since the variable frequency oscillator OSC and the selective level meter SLM are located at different stations, it is necessary to communicate the measurement frequency and perform measurements in synchronization with each other, which is very inconvenient.

叉此の測定を自動化する為には、データ伝送装置とデー
タ回線を必要とすると云う不便がある。However, there is the inconvenience that a data transmission device and data line are required to automate this measurement.

（Ｃ）０発明の目的 本発明の目的は従来技術の有する上記の欠点を除去し、
片端局側だけで伝送路の伝送特性を測定出来る遠隔測定
法を提供することである。(C)0Object of the invention The object of the present invention is to eliminate the above-mentioned drawbacks of the prior art,
It is an object of the present invention to provide a telemetry method that can measure the transmission characteristics of a transmission line only at one end station.

（ｄ）３発明の構成 上記の目的は本発明によれば、甲、乙二つの端局間の伝
送路の伝送特性を遠隔測定方式に於いて、前記甲端局に
可変周波数発振器と選択レヘル・メータを、前記乙端局
には測定周波数範囲内で一定の出カレー、ルを保持する
機能を有するスタビライザを人々設置し、前記可変周波
数発振器出力の周波数信号を前記甲端局の送信端に入力
して前記乙端局に伝送し、前記乙端局では此れを受信し
前記乙端局の受信端と送信端との間に前記スタビライザ
を接続して或一定レベルで前記乙端局−前記甲端局の伝
送路に送出し、前記甲端局の受信端に接続された前記選
択レヘル・メータで前記伝送路の伝送特性を測定するこ
とを特徴とする遠隔測定方式を提供するごとにより達成
される。(d) 3. Structure of the Invention According to the present invention, the above object is to measure the transmission characteristics of the transmission path between two terminal stations A and B using a remote measurement method, and to provide a variable frequency oscillator and a selective level transmitter to the terminal station A.・A stabilizer with a function of maintaining a constant output power within the measurement frequency range is installed at the second terminal station, and the frequency signal of the output of the variable frequency oscillator is sent to the transmitting end of the first terminal station. The input signal is transmitted to the terminal station O, the terminal station O receives it, and the stabilizer is connected between the receiving end and the transmitting end of the terminal station O, and the signal is transmitted to the terminal station O at a certain level. By providing a telemetry method, the telemetry method is characterized in that the transmission characteristics of the transmission path are measured by the selected level meter connected to the receiving end of the first station. achieved.

（Ｃ）１発明の実施例 第２図は本発明の一実施例を示すグロック図で図中、記
号、数字は第１図の場合と同一とする。(C) 1 Embodiment of the Invention FIG. 2 is a block diagram showing an embodiment of the invention, and the symbols and numbers in the figure are the same as in FIG. 1.

以下第２図に従って本発明の詳細な説明する。The present invention will be described in detail below with reference to FIG.

■最初端局ＴＡに於いて、可変周波数発振器ＯＳＣから
周波数［１の信号を端局ＴＡの送信ｔＭ４ｔ（ｓＩＮ）
に入力する。■First, at the terminal station TA, the variable frequency oscillator OSC sends a signal of frequency [1 to the terminal station TA tM4t (sIN).
Enter.

■端局ＴＢに於いて、其の受信端（ＲＯＵＴ）と送信端
（ＳＩＮ）との間にスタビライザＳＴＢを接続しておく
。スタビライザＳＴＢは測定周波数範囲内で常に一定の
出力レヘルを維持する回路であり、其の出力レヘルの誤
差は測定しようとする伝送路の測定誤差に比し小さい。(2) At the terminal station TB, a stabilizer STB is connected between its receiving end (ROUT) and transmitting end (SIN). The stabilizer STB is a circuit that always maintains a constant output level within the measurement frequency range, and the error in the output level is smaller than the measurement error in the transmission line to be measured.

■端局ＴＢに於いて使用されたスタビライザ５ＴＩｎ）
働きにより、☆Ｍ１局ＴＡよりの受信信号は或一定レベ
ルＬｂ　　（スタビライザＳ　Ｔ　Ｂにより定まる）で
端局ＴＢの送信端（ＳＩＮ）に入力されて端局ＴＡへ送
出される。■Stabilizer 5TIn used in terminal station TB)
As a result, the received signal from the ☆M1 station TA is input to the transmitting end (SIN) of the terminal station TB at a certain level Lb (determined by the stabilizer STB) and sent to the terminal station TA.

■端局ＴＡでは、受信端（ＲＯＵＴ）で上記ｆ１信号を
選択レヘル・メータＳＬＭにより測定し、此のレヘルを
Ｌｂとずれば、Ｌｂ−Ｌａが伝送路りの周波数ｆ１に対
する伝送特性となるので、周波数ｆ１を順次変えること
により各周波数に対する伝送特性を測定出来る。■At the terminal station TA, the above f1 signal is measured by the selective level meter SLM at the receiving end (ROUT), and if this level is shifted from Lb, Lb-La becomes the transmission characteristic for the frequency f1 of the transmission path. , the transmission characteristics for each frequency can be measured by sequentially changing the frequency f1.

此の様に端局ＴＡ側だけで、端局ＴＢ一端局１゛Ａ間の
伝送路りの伝送特性を測定することか可能となる。In this way, it is possible to measure the transmission characteristics of the transmission path between the terminal station TB and the terminal station 1'A only on the terminal station TA side.

（ｆ）１発明の効果 以上詳細に説明した様に本発明によれば、一つの端局に
発振器と選択レベル・メータを置くことが出来るので、
同期が節単に取れ、伝送路の伝送特性の測定の自動化が
容易となると云う大きい効果がある。(f) 1 Effect of the Invention As explained in detail above, according to the present invention, an oscillator and a selection level meter can be placed in one terminal station.
This has the great effect that synchronization can be achieved easily and automation of measurement of the transmission characteristics of the transmission path becomes easy.

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

第１図は局間の伝送路の伝送特性を測定する従来の一実
施例を示すブロック図で図中、′ＦＡは端局Ａ、ＴＢは
端局Ｂ、Ｏ３Ｃは可変周波数発振器、ＳＴＢはスタビラ
イザ、ＳＬＭは選択レベル・メータ、Ｃ及びＤは夫々端
局ＴＡ一端局ＴＢ、端局ＴＢ一端局ＴＡの伝送路、ＲＥ
Ｐは中継器である。 第２図は本発明の一実施例を示すブロック図で図中、記
号、数字は第１図の場合と同一とする。Figure 1 is a block diagram showing a conventional example of measuring the transmission characteristics of a transmission path between stations. In the figure, 'FA is terminal station A, TB is terminal station B, O3C is a variable frequency oscillator, and STB is a stabilizer. , SLM is a selection level meter, C and D are transmission lines of terminal station TA to terminal station TB, terminal station TB to terminal station TA, and RE
P is a repeater. FIG. 2 is a block diagram showing an embodiment of the present invention, and the symbols and numbers in the diagram are the same as those in FIG. 1.

Claims (1)

【特許請求の範囲】[Claims] 甲、乙二つの端局間の伝送路の伝送特性を遠隔測定方式
に於いて、前記甲端局に可変周波数発振器と選択レベル
・メータを、前記乙端局には測定周波数範囲内で一定の
出力レヘルを保持する機能を有するスタビライザを夫々
設置し、前記可変周波数発振器出力の周波数信号を前記
甲端局の送信端に入力して前記乙端局に伝送し、前記乙
端局では此れを受信し前記乙端局の受信ｂＮＪと送信端
との間に前記スタビライザを接続して或一定レベルで前
記乙品１局−前記甲端局の伝送路に送出し、前記甲端局
の受信端に接続された前記選択レヘル　メータで前記伝
送路の伝送特性を測定することを特徴とする遠隔ヨ１１
定方式。In the telemetry method, the transmission characteristics of the transmission path between two terminal stations A and B are measured.The terminal station A is equipped with a variable frequency oscillator and a selective level meter, and the terminal station O is equipped with a variable frequency oscillator and a selective level meter. A stabilizer having a function of maintaining the output level is installed respectively, and the frequency signal of the output of the variable frequency oscillator is inputted to the transmitting end of the terminal station A and transmitted to the terminal station O, and the terminal station O receives this signal. The stabilizer is connected between the receiving bNJ of the terminal station B and the transmitting end, and the signal is transmitted at a certain level to the transmission path between the terminal station B and the terminal station A, and the signal is sent to the receiving end of the terminal station A. The transmission characteristic of the transmission path is measured by the selected level meter connected to the remote control station 11.
Fixed method.
JP58047391A 1983-03-22 1983-03-22 Remote measuring system Pending JPS59171870A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58047391A JPS59171870A (en) 1983-03-22 1983-03-22 Remote measuring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58047391A JPS59171870A (en) 1983-03-22 1983-03-22 Remote measuring system

Publications (1)

Publication Number Publication Date
JPS59171870A true JPS59171870A (en) 1984-09-28

Family

ID=12773807

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58047391A Pending JPS59171870A (en) 1983-03-22 1983-03-22 Remote measuring system

Country Status (1)

Country Link
JP (1) JPS59171870A (en)

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