JPS5491017A - Remote control supervisory circuit for variable equalizer - Google Patents

Remote control supervisory circuit for variable equalizer

Info

Publication number
JPS5491017A
JPS5491017A JP15795277A JP15795277A JPS5491017A JP S5491017 A JPS5491017 A JP S5491017A JP 15795277 A JP15795277 A JP 15795277A JP 15795277 A JP15795277 A JP 15795277A JP S5491017 A JPS5491017 A JP S5491017A
Authority
JP
Japan
Prior art keywords
circuit
remote control
register
supervisory circuit
variable equalizer
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
JP15795277A
Other languages
Japanese (ja)
Inventor
Toru Enomoto
Haruo Suzuki
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 JP15795277A priority Critical patent/JPS5491017A/en
Publication of JPS5491017A publication Critical patent/JPS5491017A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the reliability of a submarine cable repeating system by making an adequate process possible at a ground station by sending out an alarm signal to a circuit corresponding to a fault in a repeater.
CONSTITUTION: A control signal arriving together with a main signal is extracted by BPF4, amplified 5 and made into pulses in circuit 6 before being supplied to register 7; and then, equalizer-setting information is read out and fixed equalization is performed. Discriminator circuit 9 detects abnormal information in register 7 and comparative decision circuit 10 detects the abnormal level of amplifier 5, so that an alarm signal will be sent out to the circuit corresponding to both abnormality detection outputs.
COPYRIGHT: (C)1979,JPO&Japio
JP15795277A 1977-12-28 1977-12-28 Remote control supervisory circuit for variable equalizer Pending JPS5491017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15795277A JPS5491017A (en) 1977-12-28 1977-12-28 Remote control supervisory circuit for variable equalizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15795277A JPS5491017A (en) 1977-12-28 1977-12-28 Remote control supervisory circuit for variable equalizer

Publications (1)

Publication Number Publication Date
JPS5491017A true JPS5491017A (en) 1979-07-19

Family

ID=15661040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15795277A Pending JPS5491017A (en) 1977-12-28 1977-12-28 Remote control supervisory circuit for variable equalizer

Country Status (1)

Country Link
JP (1) JPS5491017A (en)

Similar Documents

Publication Publication Date Title
JPS5792948A (en) Loop data transmission system
CA2003617A1 (en) Transmission line monitoring system
JPS5491017A (en) Remote control supervisory circuit for variable equalizer
JPS537352A (en) Data collection system in digital telemeter system
JPS5459810A (en) Signal waveform transmission system
ES8200532A1 (en) Method for transmitting binary signals over a foreign wiring network
JPS52153139A (en) Interior power line carrier system
JPS54918A (en) Facsimile transmission system
JPS57183155A (en) Data transmission system of remote monitoring device
JPS5577258A (en) Abnormality detecting method for data transmission line
JPS5444170A (en) Digital controller
JPS53113500A (en) Detector adapter
JPS5376799A (en) Receiver of fire alarm system
JPS5644278A (en) Video signal transmission line supervisory system
JPS5452944A (en) Circuit monitor system
JPS5223296A (en) Fire receiver
JPS56149894A (en) Alarm control device
JPS56117441A (en) Suppressing method for undesired electric wave in information collecting system
JPS52123835A (en) Supervising of trouble
JPS53121308A (en) Apparatus for detecting occurrence of trouble in received railway atc information
JPS5471283A (en) Remote monitor control system
JPS52156353A (en) Protective relay system for current difference
JPS55127753A (en) Data transmission system
JPS5535555A (en) Receiving confirmation method in facsimile unit
GB824065A (en) Improvements in or relating to a method of and a device for eliminating spurious information in a signal transmission system