JPS5526751A - Supervisory circuit for transmitter - Google Patents

Supervisory circuit for transmitter

Info

Publication number
JPS5526751A
JPS5526751A JP9967878A JP9967878A JPS5526751A JP S5526751 A JPS5526751 A JP S5526751A JP 9967878 A JP9967878 A JP 9967878A JP 9967878 A JP9967878 A JP 9967878A JP S5526751 A JPS5526751 A JP S5526751A
Authority
JP
Japan
Prior art keywords
output
transmitter
dissidence
signal
inputted
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.)
Granted
Application number
JP9967878A
Other languages
Japanese (ja)
Other versions
JPS58213B2 (en
Inventor
Kiyoshi Aoki
Toshiya Senoo
Hitoshi Saito
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.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing 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 Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP53099678A priority Critical patent/JPS58213B2/en
Publication of JPS5526751A publication Critical patent/JPS5526751A/en
Publication of JPS58213B2 publication Critical patent/JPS58213B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To improve reliability by detecting the abnormality of a transmitter definitely with a simple circuit constitution by providing a circiut which detects as an an output pulse width a dissidence period of the input pulse signal and output pulse signal of the transmitter. CONSTITUTION:Received signal (a) and transmitted signal (b) are inputted to re- trigger monostable multivibrators MM1 and MM2, whose outputs (c) and (d) are inputted to exclusive OR circuit EXR, where a period of dissidence between both signals (c) and (d) is detected. In case abnormal that signals (a) and (b) of the transmitter differ, the dissidence output width of EXR becomes larger where a fault occurs, there is dissidence output (f) at the fall of monostable multivibrator MM3, and output (q) of FF is inverted into a low level; and then change-over relay 15 is reset (h) via driver inverter INV and photocoupler PC to output a pulse-string signal through by-pass line 16, so that the transmitter will be disconnected from transmission line 5.
JP53099678A 1978-08-15 1978-08-15 Transmission equipment monitoring circuit Expired JPS58213B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53099678A JPS58213B2 (en) 1978-08-15 1978-08-15 Transmission equipment monitoring circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53099678A JPS58213B2 (en) 1978-08-15 1978-08-15 Transmission equipment monitoring circuit

Publications (2)

Publication Number Publication Date
JPS5526751A true JPS5526751A (en) 1980-02-26
JPS58213B2 JPS58213B2 (en) 1983-01-05

Family

ID=14253681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53099678A Expired JPS58213B2 (en) 1978-08-15 1978-08-15 Transmission equipment monitoring circuit

Country Status (1)

Country Link
JP (1) JPS58213B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60156352U (en) * 1984-03-29 1985-10-18 株式会社コロナ water heater

Also Published As

Publication number Publication date
JPS58213B2 (en) 1983-01-05

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