JPS5895445A - Tester for digital transmission line - Google Patents

Tester for digital transmission line

Info

Publication number
JPS5895445A
JPS5895445A JP19290381A JP19290381A JPS5895445A JP S5895445 A JPS5895445 A JP S5895445A JP 19290381 A JP19290381 A JP 19290381A JP 19290381 A JP19290381 A JP 19290381A JP S5895445 A JPS5895445 A JP S5895445A
Authority
JP
Japan
Prior art keywords
information
time slot
circuit
digital transmission
transmission 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
Application number
JP19290381A
Other languages
Japanese (ja)
Inventor
Hiroshi Utaki
卯瀧 浩史
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP19290381A priority Critical patent/JPS5895445A/en
Publication of JPS5895445A publication Critical patent/JPS5895445A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/02Details
    • H04J3/14Monitoring arrangements

Abstract

PURPOSE:To execute the equipment test through a digital transmission line and the fault locating of plural equipments in a short time, by executing the visual display of specific time slot information, the change of this information, and the synchronism detection in one device. CONSTITUTION:Information from an incoming highway 1 is inputted to a synchronism detecting circuit 3 through a connector 2. If a fault occurs and the synchronism detecting circuit 3 indicates that synchronism is not detected, a light emitting diode 4 is lit to display the occurrence of the fault. A time slot number designated by a key of a time slot designating circuit 6 and information from the incoming highway 1 are collated with each other in a collating circuit 7, and designated time slot information is inputted to a data storing circuit 13. When the data storing circuit 13 receives a periodic pulse from a display controlling circuit 15 through a control line 5, stored time slot information is displayed on light emitting diodes 14. Since the period of pulses from the display controlling circuit 15 is long, the operator can confirm easily time slot information displayed on light emitting diodes 14 successively.

Description

【発明の詳細な説明】 本発明は、ディジタル伝送路上の特定タイムスロット情
報の可視表示・特定タイムスロットへの情報書込み・同
期はずれ検出を、小型・、取扱容易かつ安画に実現する
ディジタル伝送路試IA器に関するものでりる。
[Detailed Description of the Invention] The present invention provides a digital transmission line that is compact, easy to handle, and inexpensive to visually display specific time slot information on a digital transmission line, write information to a specific time slot, and detect out-of-synchronization. This is related to trial IA equipment.

情報が時分割方式でディジタル伝送路上を伝搬している
とき、該情報の内容を外部から目視し九り変更操作した
い場合がある。例えば、ディジタル伝送路を介して情報
の送受を行う二装置のいずれか一方に異常が生じた場合
の被疑装置の切分は試験等である。
When information is being propagated on a digital transmission path in a time-division manner, there are cases where it is desired to visually view the content of the information from the outside and manipulate it to change it. For example, if an abnormality occurs in one of two devices that send and receive information via a digital transmission path, testing is required to isolate the suspect device.

しかし、これらの操作を従来のディジタル伝送路試験器
で行うと、従来のディジタル伝送路試験器が大型で取扱
いが複雑であることから、その操作に時間がかかり試験
が遅延するという欠点があった。例えば、該当装置が入
線ハイウェイを介して取込んた情報を処理し、玉露な情
報を出線ハイウェイに出力していることを確縁する装置
試験や、システム障害に対して装置相互の障害切分けを
行なう場合等において、従来技術では多大の時間が必要
とされたのである。。
However, if these operations were performed using a conventional digital transmission line tester, the disadvantage was that the operation would take time and the test would be delayed because the conventional digital transmission line tester is large and complicated to handle. . For example, equipment testing to ensure that the relevant equipment processes information taken in via the incoming highway and outputs detailed information to the outgoing highway, and fault isolation between equipment in case of system failure. Conventional techniques require a large amount of time when carrying out such operations. .

また、従来のディジタル伝送路試験器は大型で。Additionally, conventional digital transmission line testers are large.

価格も高いため、利用しにくいという欠点もbっ危。Due to its high price, it also has the disadvantage of being difficult to use.

本発明はかかる従来のディジタル伝送路試駆。The present invention is a trial run of such a conventional digital transmission line.

器の欠点忙鑑みなされたもので、ディジタル伝送路情報
の操作観察機能な一固体内に集約し、取扱操作が容易で
安価に構成できるディジタル伝送路試験器を提供するこ
とを目的としている。
The purpose of the present invention is to provide a digital transmission line tester that is easy to handle and can be constructed at low cost by consolidating the operation and observation functions of digital transmission line information into a single unit.

本発明のディジタル伝送路試験器は、ディジタル伝送路
を介して時分割方式でディジタル情報の送受を行なう情
報装置に接続される装置であって、外部からのタイムス
ロット番号のN示に応じてディジタル情報の時間軸上の
位置を照合し、該タイムスロットの情報内容を可視表示
する回路と、外部からのタイムスロット番号の指示に応
じた該タイムスロットの情報内容を外部からの指示に従
って変更する回路と、同期はずれやパリティ障害などの
伝送誤りを検出し可視表示する回路とから構成されてい
る。
The digital transmission line tester of the present invention is a device that is connected to an information device that transmits and receives digital information in a time-division manner via a digital transmission line, and is a device that is connected to an information device that transmits and receives digital information in a time-division manner via a digital transmission line. A circuit that verifies the position of information on the time axis and visually displays the information content of the time slot, and a circuit that changes the information content of the time slot in accordance with an external instruction of the time slot number. It consists of a circuit that detects and visually displays transmission errors such as out-of-synchronization and parity failures.

昼下図面に示す実施例忙より、更に詳細に本発明につい
て説明する。
The present invention will be described in more detail with reference to the embodiments shown in the drawings.

第1図は本発明の一実施例を示すブロック図である。同
図において、入線ハイウェイ1を介して入力される情報
は、入線ハイウェイコネクタ2を介して同期検出回路5
に入力される。障害が発生して、同期検出回路5が同期
を検出しない場合には1発光ダイオード4が点燈し、オ
ペレータに表示される。
FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, information input via an incoming highway 1 is transmitted to a synchronization detection circuit 5 via an incoming highway connector 2.
is input. If a failure occurs and the synchronization detection circuit 5 does not detect synchronization, one light emitting diode 4 lights up and is displayed to the operator.

また、タイムスロット指定回路6に設けられたキー(図
示せず)でタイムスロットの指定を行うと、指定された
タイムスロット番号と入線ハイウェイ1を介して入力さ
れる情報とが照合回路7で照合され、指定され几タイム
スロットの情報がデータ蓄積回路16に入力される。デ
ータ蓄積回路15は表示制御回路15から制御線5を介
して周期的に入力されるパルスを受けたとき入力され次
情報すなわち蓄積し次タイムスロット情報を発光ダイオ
ード14に表示する。表示制御回路15が発生するパル
スの周期は充分に長いので、オペレータは逐次発光ダイ
オード14に表示されるタイムスロット情報を容易に確
認することができる。
Furthermore, when a time slot is designated using a key (not shown) provided in the time slot designation circuit 6, the verification circuit 7 collates the designated time slot number with the information input via the incoming highway 1. The specified time slot information is input to the data storage circuit 16. When the data storage circuit 15 receives pulses periodically inputted from the display control circuit 15 via the control line 5, the data storage circuit 15 stores the next information, that is, the next time slot information, and displays the next time slot information on the light emitting diode 14. Since the period of the pulses generated by the display control circuit 15 is sufficiently long, the operator can easily confirm the time slot information sequentially displayed on the light emitting diodes 14.

タイムスロット情報の変更は、次の様にして行なわれる
。即ち、入線ハイウェイ1のタイムスロット情報のうち
、タイムスロット指定回路6のキーで指定したタイムス
ロット力、ゲート回路8で抽出される。抽出されたタイ
ムスロットにデータ書込回路9のキー(図示せず)で指
定した情報がゲート回路1oを介して書き込まれる。こ
(041にして変更されたタイムスロット情報は、出線
ハイウェイコネクタ11を介して出線ハイウェイ12に
出力される。
The time slot information is changed as follows. That is, among the time slot information of the incoming highway 1, the time slot power specified by the key of the time slot designation circuit 6 is extracted by the gate circuit 8. Information specified by a key (not shown) of the data writing circuit 9 is written into the extracted time slot via the gate circuit 1o. The time slot information changed at 041 is output to the outgoing highway 12 via the outgoing highway connector 11.

第2図は本発明のディジタル伝送路試験器の第1の使用
例を示すブロック図である。同図に示す様に、ディジタ
ル伝送路試験器2oは、ディジタル情報処理装置ft2
1の入線ハイウェイ22と出線ハイウェイ25に接続さ
れ、これによりてディジタル1青報処理装置21が出線
ハイウェイ25に出力するハイウェイ情報を試験するこ
とが可能になる。
FIG. 2 is a block diagram showing a first usage example of the digital transmission line tester of the present invention. As shown in the figure, the digital transmission line tester 2o is connected to the digital information processing device ft2.
It is connected to the incoming highway 22 and outgoing highway 25 of No. 1, thereby making it possible to test the highway information that the digital 1 information processing device 21 outputs to the outgoing highway 25.

第5図は本発明のディジタル伝送路試験器の  1第2
の使用例を示すブロック図である。図示する様VC1f
イジタル伝送路試験器24は、ディジタル情報処理装置
25と26を結ぶ入線ハイウェイ27.28と出線ハイ
ウェイ29.50の中間に挿設されている。これによっ
て、ディジタル情報処理装置25からディジタル情報処
理装置26へ伝送されるハイウェイ情報及びディジタル
情報処理装置26からディジタル情報処理装置25へ伝
送されるハイウェイ情報を試験・観察することができる
Figure 5 shows 1 and 2 of the digital transmission line tester of the present invention.
It is a block diagram showing an example of use. VC1f as shown
The digital transmission line tester 24 is inserted between the incoming highway 27.28 and the outgoing highway 29.50 that connect the digital information processing devices 25 and 26. Thereby, the highway information transmitted from the digital information processing device 25 to the digital information processing device 26 and the highway information transmitted from the digital information processing device 26 to the digital information processing device 25 can be tested and observed.

以上の説明から明らかな様に、本発明によれば、ディジ
タル伝送路対向あるいは二本のディジタル伝送路間で、
特定タイムスロット情報の可視表示と特定タイムスロッ
ト情報の変更と同期検出とを一つの装置で実行でき、し
かも小型で取扱いが容易であり、安価に構成できる効果
がある。従って、ディジタル伝送路を介し7t[置試験
やディジタル伝送路を介した複数装置の障害切分けを短
時間で実行できる効果を有する
As is clear from the above description, according to the present invention, between opposing digital transmission lines or between two digital transmission lines,
Visually displaying specific time slot information, changing specific time slot information, and detecting synchronization can be performed with one device, and it is small and easy to handle, and has the advantage of being inexpensive. Therefore, it has the effect of being able to carry out 7t [in-place tests and fault isolation of multiple devices via digital transmission lines] in a short period of time via digital transmission lines.

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

第1図は本発明のディジタル伝送路試験器の一実施例を
示すブロック図、第2図は本発明のディジタル伝送路試
験器の第1の使用例を示すブロック図、第3図は本発明
のディジタル伝送路試験器の第2の使用例を示すブロッ
ク図である。 1.22,27.50・・・入線ハイウェイ、2・・・
入線ハイウェイコネクタ、 5・・・同期検出回路、 4,14・・・発光ダイオー
ド、 5・・・制御線、 6・・・タイムスロット指定回路、 7・・・照合回路、    8,10・・・ゲート回路
、9・・・タイムスロットデータ書込回路、11・・・
出線ハイウェイコネクタ、 12.25.28.29・・・出線ハイウェイ、20 
、24・・・ディジタル伝送路試験器。 21.25.26・・・ディジタル情報処理装置。 オ 丁 2
FIG. 1 is a block diagram showing an embodiment of the digital transmission line tester of the present invention, FIG. 2 is a block diagram showing a first usage example of the digital transmission line tester of the present invention, and FIG. 3 is a block diagram showing an example of the use of the digital transmission line tester of the present invention. FIG. 2 is a block diagram showing a second usage example of the digital transmission line tester of FIG. 1.22, 27.50...Entering highway, 2...
Incoming highway connector, 5... Synchronization detection circuit, 4, 14... Light emitting diode, 5... Control line, 6... Time slot designation circuit, 7... Verification circuit, 8, 10... Gate circuit, 9...Time slot data writing circuit, 11...
Outbound highway connector, 12.25.28.29...Outbound highway, 20
, 24...Digital transmission line tester. 21.25.26...Digital information processing device. O Ding 2

Claims (1)

【特許請求の範囲】[Claims] ディジタル伝送路を介して時分割方式でディジタル情報
の送受を行なう情報装置に接続される装置であって、外
部からのタイムスロット番号の指示に応じてディジタル
情報の時間軸上の位置を照合し、該タイムスロットの情
報内容を可視表示する回路と、外部からのタイムスロッ
ト番号の指示に応じた該タイムスロットの情報内容を外
部から指示に従って変更する回路と、同期はずれやパリ
ティ障害などの伝送誤りを検出して可視表示する回路と
を具備することを特徴とするディジタル伝送路試験器。
A device connected to an information device that transmits and receives digital information in a time-division manner via a digital transmission path, which verifies the position of digital information on the time axis according to an external time slot number instruction, and A circuit that visually displays the information content of the time slot, a circuit that changes the information content of the time slot in response to an external time slot number instruction, and a circuit that prevents transmission errors such as out of synchronization and parity errors. A digital transmission line tester characterized by comprising a circuit for detecting and visually displaying the detection result.
JP19290381A 1981-12-02 1981-12-02 Tester for digital transmission line Pending JPS5895445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19290381A JPS5895445A (en) 1981-12-02 1981-12-02 Tester for digital transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19290381A JPS5895445A (en) 1981-12-02 1981-12-02 Tester for digital transmission line

Publications (1)

Publication Number Publication Date
JPS5895445A true JPS5895445A (en) 1983-06-07

Family

ID=16298891

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19290381A Pending JPS5895445A (en) 1981-12-02 1981-12-02 Tester for digital transmission line

Country Status (1)

Country Link
JP (1) JPS5895445A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63248238A (en) * 1987-04-03 1988-10-14 Nec Corp Intermediate repeater
JPS645240A (en) * 1987-06-29 1989-01-10 Nec Corp Intermediate repeater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63248238A (en) * 1987-04-03 1988-10-14 Nec Corp Intermediate repeater
JPS645240A (en) * 1987-06-29 1989-01-10 Nec Corp Intermediate repeater

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