JPS5631656A - S/n instrument and s/n measuring method - Google Patents

S/n instrument and s/n measuring method

Info

Publication number
JPS5631656A
JPS5631656A JP10714579A JP10714579A JPS5631656A JP S5631656 A JPS5631656 A JP S5631656A JP 10714579 A JP10714579 A JP 10714579A JP 10714579 A JP10714579 A JP 10714579A JP S5631656 A JPS5631656 A JP S5631656A
Authority
JP
Japan
Prior art keywords
reference voltage
output
meter
terminal
modulation
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
JP10714579A
Other languages
Japanese (ja)
Inventor
Junichi Shibata
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP10714579A priority Critical patent/JPS5631656A/en
Publication of JPS5631656A publication Critical patent/JPS5631656A/en
Pending legal-status Critical Current

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  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE: To enable to measure the S/N of tuner in reception state, by using the 100% modulation output and zero % modulation output.
CONSTITUTION: The signal from the input terminal 1 is detected and rectified at the detector 3 and LPF4 via the compressor 2, and fed to the - terminal of the operational amplifier 5. On the other hand, to the + terminal of the operational amplifier 5, the reference voltage from the reference voltage generator 6 is given, and this output is held at the peak hold circuit 7. This hold value corresponds to the minimum level of the input signal and this value is displayed on the meter 8. The output of the tuner 11 of 100% modulation is fed to the input terminal 1 and the meter 8 is set so that is shows 0 dB to the maximum value of the reference voltage of the reference voltage generator 6. With this state, by reading the indication of the meter 8 of nonmodulation (between recordings of music etc.) of broadcast, the S/N can be obtained from this indication and the range of the generator 6.
COPYRIGHT: (C)1981,JPO&Japio
JP10714579A 1979-08-24 1979-08-24 S/n instrument and s/n measuring method Pending JPS5631656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10714579A JPS5631656A (en) 1979-08-24 1979-08-24 S/n instrument and s/n measuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10714579A JPS5631656A (en) 1979-08-24 1979-08-24 S/n instrument and s/n measuring method

Publications (1)

Publication Number Publication Date
JPS5631656A true JPS5631656A (en) 1981-03-31

Family

ID=14451646

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10714579A Pending JPS5631656A (en) 1979-08-24 1979-08-24 S/n instrument and s/n measuring method

Country Status (1)

Country Link
JP (1) JPS5631656A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62215126A (en) * 1986-03-13 1987-09-21 Daido Metal Kogyo Kk Bearing unit
US5671715A (en) * 1995-04-27 1997-09-30 Nipon Soken, Inc. Fuel injection device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62215126A (en) * 1986-03-13 1987-09-21 Daido Metal Kogyo Kk Bearing unit
DE3642556A1 (en) * 1986-03-13 1987-09-24 Daido Metal Co Ltd STORAGE UNIT
US5671715A (en) * 1995-04-27 1997-09-30 Nipon Soken, Inc. Fuel injection device

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