JPS5494221A - Output impedance measuring method of facsimile transceiver - Google Patents
Output impedance measuring method of facsimile transceiverInfo
- 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
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
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)
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 |
-
1978
- 1978-01-10 JP JP176578A patent/JPS5494221A/en active Pending
Cited By (3)
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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