JPS5739634A - Monitor frequency converter for test pulse signal - Google Patents

Monitor frequency converter for test pulse signal

Info

Publication number
JPS5739634A
JPS5739634A JP11407880A JP11407880A JPS5739634A JP S5739634 A JPS5739634 A JP S5739634A JP 11407880 A JP11407880 A JP 11407880A JP 11407880 A JP11407880 A JP 11407880A JP S5739634 A JPS5739634 A JP S5739634A
Authority
JP
Japan
Prior art keywords
pulse signal
monitor
component
station
filter
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
JP11407880A
Other languages
Japanese (ja)
Other versions
JPS6014541B2 (en
Inventor
Toshiyuki Kuga
Munetaka Ono
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP55114078A priority Critical patent/JPS6014541B2/en
Publication of JPS5739634A publication Critical patent/JPS5739634A/en
Publication of JPS6014541B2 publication Critical patent/JPS6014541B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H04B17/401—Monitoring; Testing of relay systems with selective localization
    • H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
    • H04B17/404—Monitoring; Testing of relay systems with selective localization using different frequencies selected by local filters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To make the attendance to an unattended station for the test toward incoming direction unnecessary, by transmitting the pulse signal in a monitor frequency component fi+1 at the unattended station to an incoming transmission line, according to the pulse signal in a monitor frequency component fi transmitted from an attended station. CONSTITUTION:An unattended station 7 is provided with a monitor frequency converter SVFC7. When this SVFC7 inputs the pulse signal in a monitor frequency component fi (e.g., the same frequency as that assigned to a filter 3a), the pulse signal in a monitor frequency component fi+1 (e.g., the same frequency as that assigned to a filter 3b) is outputted. Thus, when the pulse signal in the component fi is transmitted from an attended station, it returns to the attended station via a relay device 1a, a filter 3a, and a monitor line 6 for level measurement. Further, when the pulse signal in the component fi+1 is outputted from the SVFC7 according to the pulse signal in the component fi, it returns to the attended station via a relay device 2b, a filter 3b and the monitor line 6 for level measurement.
JP55114078A 1980-08-21 1980-08-21 Test pulse signal monitoring frequency conversion device Expired JPS6014541B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55114078A JPS6014541B2 (en) 1980-08-21 1980-08-21 Test pulse signal monitoring frequency conversion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55114078A JPS6014541B2 (en) 1980-08-21 1980-08-21 Test pulse signal monitoring frequency conversion device

Publications (2)

Publication Number Publication Date
JPS5739634A true JPS5739634A (en) 1982-03-04
JPS6014541B2 JPS6014541B2 (en) 1985-04-13

Family

ID=14628497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55114078A Expired JPS6014541B2 (en) 1980-08-21 1980-08-21 Test pulse signal monitoring frequency conversion device

Country Status (1)

Country Link
JP (1) JPS6014541B2 (en)

Also Published As

Publication number Publication date
JPS6014541B2 (en) 1985-04-13

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