JPH0353057U - - Google Patents

Info

Publication number
JPH0353057U
JPH0353057U JP11322489U JP11322489U JPH0353057U JP H0353057 U JPH0353057 U JP H0353057U JP 11322489 U JP11322489 U JP 11322489U JP 11322489 U JP11322489 U JP 11322489U JP H0353057 U JPH0353057 U JP H0353057U
Authority
JP
Japan
Prior art keywords
optical
level
abnormality
reception state
optical receiver
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
JP11322489U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP11322489U priority Critical patent/JPH0353057U/ja
Publication of JPH0353057U publication Critical patent/JPH0353057U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)
JP11322489U 1989-09-27 1989-09-27 Pending JPH0353057U (enExample)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11322489U JPH0353057U (enExample) 1989-09-27 1989-09-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11322489U JPH0353057U (enExample) 1989-09-27 1989-09-27

Publications (1)

Publication Number Publication Date
JPH0353057U true JPH0353057U (enExample) 1991-05-22

Family

ID=31661643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11322489U Pending JPH0353057U (enExample) 1989-09-27 1989-09-27

Country Status (1)

Country Link
JP (1) JPH0353057U (enExample)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5183407A (en) * 1975-01-20 1976-07-22 Hitachi Ltd Idoyotsushinsochino dengendenatsuijoshorihoshiki
JPS52110510A (en) * 1976-03-15 1977-09-16 Hitachi Ltd Transmission data driving circuit with power observation
JPS5555646A (en) * 1978-10-20 1980-04-23 Toshiba Corp Failure detection system for remote monitor system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5183407A (en) * 1975-01-20 1976-07-22 Hitachi Ltd Idoyotsushinsochino dengendenatsuijoshorihoshiki
JPS52110510A (en) * 1976-03-15 1977-09-16 Hitachi Ltd Transmission data driving circuit with power observation
JPS5555646A (en) * 1978-10-20 1980-04-23 Toshiba Corp Failure detection system for remote monitor system

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