JPS6031063A - Fm modulation meter - Google Patents

Fm modulation meter

Info

Publication number
JPS6031063A
JPS6031063A JP13995883A JP13995883A JPS6031063A JP S6031063 A JPS6031063 A JP S6031063A JP 13995883 A JP13995883 A JP 13995883A JP 13995883 A JP13995883 A JP 13995883A JP S6031063 A JPS6031063 A JP S6031063A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
frequency
signal
modulation wave
fm modulation
voltage
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
JP13995883A
Inventor
Minoru Nozoe
Mitsuhiko Ueda
Original Assignee
Rohm 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

Links

Abstract

PURPOSE: To display filter output by a level display device, by providing a frequency converter for performing the frequency conversion of an FM modulation wave, a frequency-voltage converter for converting frequency change to voltage change and a low pass filter.
CONSTITUTION: When an FM modulation wave is inputted from an FM modulation wave source 1, a frequency converter 3 converts said modulation wave to the difference signal with the signal from an oscillator 4. This difference signal is subjected to, for example, 1/10 frequency division by a 1/10 frequency divider 5 and inputted to a frequency-voltage converter 6. The frequency-voltage converter 6 used herein is one with a full scale of about 100kHz and a frequency signal is converted to a voltage signal in a place good in linearity. This voltage signal is further applied to LPF7 and a modulation component, that is, a sound zone signal is led out from the output thereof. By displaying this output level by a level display device 8, the modulation degree of the FM modulation wave outputted from the FM modulation wave source 1 can be measured.
COPYRIGHT: (C)1985,JPO&Japio
JP13995883A 1983-07-30 1983-07-30 Fm modulation meter Pending JPS6031063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13995883A JPS6031063A (en) 1983-07-30 1983-07-30 Fm modulation meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13995883A JPS6031063A (en) 1983-07-30 1983-07-30 Fm modulation meter

Publications (1)

Publication Number Publication Date
JPS6031063A true true JPS6031063A (en) 1985-02-16

Family

ID=15257627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13995883A Pending JPS6031063A (en) 1983-07-30 1983-07-30 Fm modulation meter

Country Status (1)

Country Link
JP (1) JPS6031063A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4947706A (en) * 1972-05-12 1974-05-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4947706A (en) * 1972-05-12 1974-05-09

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