JPS6481482A - Level monitoring equipment for catv - Google Patents

Level monitoring equipment for catv

Info

Publication number
JPS6481482A
JPS6481482A JP23848487A JP23848487A JPS6481482A JP S6481482 A JPS6481482 A JP S6481482A JP 23848487 A JP23848487 A JP 23848487A JP 23848487 A JP23848487 A JP 23848487A JP S6481482 A JPS6481482 A JP S6481482A
Authority
JP
Japan
Prior art keywords
section
control signal
level
catv
transmission
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
JP23848487A
Other languages
Japanese (ja)
Inventor
Hitoshi Yoshizawa
Yasushi Hamada
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
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 filed Critical NEC Corp
Priority to JP23848487A priority Critical patent/JPS6481482A/en
Publication of JPS6481482A publication Critical patent/JPS6481482A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To easily and quickly adjust the transmission level of CATV by providing an input/output terminal, a directional filter, a control signal reception section, a level measurement section and a data transmission section. CONSTITUTION:A control signal reception section 3 in connecting to the farthest end of a CATV trunk line amplifier or the like, receives its own address and a control signal relating to the measurement frequency by the polling selection from a transmission center and sends a control signal in response to the received measurement frequency to a level measurement section 4. The level measurement section 4 sets the measured frequency by a control signal from the control signal reception section 3, measures the level to send the measured data to a data transmission section 5. The data transmission section 5 adds its own address, converts the measured data to an incoming band signal and sends the result as an incoming signal. The incoming signal passes through a directional filter 2 and is sent from the input/output terminal 1. Thus, the transmission center adjusts the transmission level of each channel of the CATV and equalizes it in advance.
JP23848487A 1987-09-22 1987-09-22 Level monitoring equipment for catv Pending JPS6481482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23848487A JPS6481482A (en) 1987-09-22 1987-09-22 Level monitoring equipment for catv

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23848487A JPS6481482A (en) 1987-09-22 1987-09-22 Level monitoring equipment for catv

Publications (1)

Publication Number Publication Date
JPS6481482A true JPS6481482A (en) 1989-03-27

Family

ID=17030929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23848487A Pending JPS6481482A (en) 1987-09-22 1987-09-22 Level monitoring equipment for catv

Country Status (1)

Country Link
JP (1) JPS6481482A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05110517A (en) * 1991-10-21 1993-04-30 Nec Corp Optical repeater transmission system
JPH05207321A (en) * 1991-04-08 1993-08-13 Hughes Aircraft Co Automatic rf equalizer for video distribution system of passenger airplane

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158584A (en) * 1980-05-10 1981-12-07 Matsushita Electric Ind Co Ltd Catv device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158584A (en) * 1980-05-10 1981-12-07 Matsushita Electric Ind Co Ltd Catv device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05207321A (en) * 1991-04-08 1993-08-13 Hughes Aircraft Co Automatic rf equalizer for video distribution system of passenger airplane
JPH05110517A (en) * 1991-10-21 1993-04-30 Nec Corp Optical repeater transmission system

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