JPS5494221A - Output impedance measuring method of facsimile transceiver - Google Patents

Output impedance measuring method of facsimile transceiver

Info

Publication number
JPS5494221A
JPS5494221A JP176578A JP176578A JPS5494221A JP S5494221 A JPS5494221 A JP S5494221A JP 176578 A JP176578 A JP 176578A JP 176578 A JP176578 A JP 176578A JP S5494221 A JPS5494221 A JP S5494221A
Authority
JP
Japan
Prior art keywords
facsimile transceiver
output impedance
measuring method
impedance measuring
value
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
JP176578A
Other languages
Japanese (ja)
Inventor
Toshio Nanun
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
Nippon Electric 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
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP176578A priority Critical patent/JPS5494221A/en
Publication of JPS5494221A publication Critical patent/JPS5494221A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimiles In General (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

PURPOSE: To measure the output impedence of facsimile transceiver, by performing two times voltage measurments and simple calculation.
CONSTITUTION: The output frequency of the constant voltage sinusoidal wave generator 3 is set to the specified frequency, and the value Vo if the AC voltmeter 6 is read in with the transmitting condition of the facsimile transceiver 1. Next, a fixed resistor 7 having resistance value Ro is connected between the connection terminals 101 and 102 and the value Vx of the AC voltmeter 6 is read. Thus, the output impedance Zx of the facsimile transceiver 1 is obtained by calculating Zx= (Vo-Vx)Ro/Vx.
COPYRIGHT: (C)1979,JPO&Japio
JP176578A 1978-01-10 1978-01-10 Output impedance measuring method of facsimile transceiver Pending JPS5494221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP176578A JPS5494221A (en) 1978-01-10 1978-01-10 Output impedance measuring method of facsimile transceiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP176578A JPS5494221A (en) 1978-01-10 1978-01-10 Output impedance measuring method of facsimile transceiver

Publications (1)

Publication Number Publication Date
JPS5494221A true JPS5494221A (en) 1979-07-25

Family

ID=11510665

Family Applications (1)

Application Number Title Priority Date Filing Date
JP176578A Pending JPS5494221A (en) 1978-01-10 1978-01-10 Output impedance measuring method of facsimile transceiver

Country Status (1)

Country Link
JP (1) JPS5494221A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5895875A (en) * 1994-03-24 1999-04-20 Yamaha Corporation Keyboard assembly for electronic musical instrument
US6005178A (en) * 1994-03-24 1999-12-21 Yamaha Corporation Electronic musical instrument simulating acoustic piano keytouch characteristics
CN102841258A (en) * 2012-09-12 2012-12-26 北京东方计量测试研究所 Measuring device and method for direct current supply output impedance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5895875A (en) * 1994-03-24 1999-04-20 Yamaha Corporation Keyboard assembly for electronic musical instrument
US6005178A (en) * 1994-03-24 1999-12-21 Yamaha Corporation Electronic musical instrument simulating acoustic piano keytouch characteristics
CN102841258A (en) * 2012-09-12 2012-12-26 北京东方计量测试研究所 Measuring device and method for direct current supply output impedance

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