JPS5494222A - Input impefance measuring method for facsimile transceiver - Google Patents
Input impefance measuring method for facsimile transceiverInfo
- Publication number
- JPS5494222A JPS5494222A JP176678A JP176678A JPS5494222A JP S5494222 A JPS5494222 A JP S5494222A JP 176678 A JP176678 A JP 176678A JP 176678 A JP176678 A JP 176678A JP S5494222 A JPS5494222 A JP S5494222A
- Authority
- JP
- Japan
- Prior art keywords
- facsimile transceiver
- input
- impefance
- measuring method
- 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
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Facsimiles In General (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
PURPOSE: To measure the input impedance of facsimile transceiver, by two times voltage measurements and a simple calculation.
CONSTITUTION: The output frequency of the constant voltage sinusoidal wave generator 2 is set to the specified frequency, making the facsimile transceiver 1 into reception condition. With this condition, the voltage Vx between the connection terminals 101 and 102 is measured with the AC voltmeter 6. Next, the AC voltmeter 6 is connected to the connection terminals 103 and 102 and the output voltage Vo is measured. Thus, the input impedance Zx of the facsimile transceiver 1 can be obtained from Zx=Vx.Ro/(Vo-Vx).
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP176678A JPS5494222A (en) | 1978-01-10 | 1978-01-10 | Input impefance measuring method for facsimile transceiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP176678A JPS5494222A (en) | 1978-01-10 | 1978-01-10 | Input impefance measuring method for facsimile transceiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5494222A true JPS5494222A (en) | 1979-07-25 |
Family
ID=11510693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP176678A Pending JPS5494222A (en) | 1978-01-10 | 1978-01-10 | Input impefance measuring method for facsimile transceiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5494222A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01314990A (en) * | 1988-06-15 | 1989-12-20 | Tokyo Gas Co Ltd | Contact detection method and apparatus for electroconductive object of underground buried tube |
-
1978
- 1978-01-10 JP JP176678A patent/JPS5494222A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01314990A (en) * | 1988-06-15 | 1989-12-20 | Tokyo Gas Co Ltd | Contact detection method and apparatus for electroconductive object of underground buried tube |
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