JPH0390090U - - Google Patents
Info
- Publication number
- JPH0390090U JPH0390090U JP15223289U JP15223289U JPH0390090U JP H0390090 U JPH0390090 U JP H0390090U JP 15223289 U JP15223289 U JP 15223289U JP 15223289 U JP15223289 U JP 15223289U JP H0390090 U JPH0390090 U JP H0390090U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- attenuation
- noise
- signal
- meter
- 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
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Description
第１図はこの考案の雑音指数計の校正装置の構
成図、第２図はこの考案のタイミングチヤート図
第３図はこの考案の補正値の関係図、第４図は従
来の雑音指数計の校正装置の構成図、第５図は従
来のタイミングチヤート図である。
図中、１……雑音指数計、２……信号発振器、
３……変調器、１０……メモリ回路、１１……デ
ータ入力回路、１６……補正回路、１７……補正
駆動回路である。尚、図中同一あるいは相当部分
には同一符号を付して示してある。
Fig. 1 is a block diagram of the calibration device of the noise figure meter of this invention, Fig. 2 is a timing chart of this invention, Fig. 3 is a relationship diagram of correction values of this invention, and Fig. 4 is a diagram of the conventional noise figure meter. The configuration diagram of the calibration device, FIG. 5, is a conventional timing chart. In the figure, 1...Noise figure meter, 2...Signal oscillator,
3...modulator, 10...memory circuit, 11...data input circuit, 16...correction circuit, 17...correction drive circuit. In the drawings, the same or corresponding parts are designated by the same reference numerals.
Claims (1)
おいて、連続波信号を発生する信号発振器と、雑
音指数計より出力される雑音源ゲート信号に同期
して、上記連続波信号を固定減衰回路とステツプ
減衰回路とに切換える切換回路と、上記固定減衰
回路の減衰量と上記ステツプ減衰回路との減衰量
差により、任意な雑音指数に相当するＹフアクタ
を発生する変調器と、上記ステツプ減衰回路を駆
動する減衰駆動回路と、上記減衰駆動回路に駆動
信号を送り出すメモリ回路と、上記メモリ回路に
動作信号を送り出すデータ入力回路と、上記ステ
ツプ減衰回路側を補正する補正回路と、上記補正
回路を駆動する補正駆動回路とを有する事を特徴
とする雑音指数計の校正装置。 In a noise figure meter calibration device that uses the Y-factor method, a signal oscillator that generates a continuous wave signal and a step attenuator that convert the continuous wave signal to a fixed attenuation circuit in synchronization with a noise source gate signal output from the noise figure meter. a switching circuit for switching between the fixed attenuation circuit and the step attenuation circuit; a modulator for generating a Y factor corresponding to an arbitrary noise figure based on the difference in attenuation between the fixed attenuation circuit and the step attenuation circuit; and a modulator for driving the step attenuation circuit. an attenuation drive circuit, a memory circuit that sends a drive signal to the attenuation drive circuit, a data input circuit that sends an operation signal to the memory circuit, a correction circuit that corrects the step attenuation circuit side, and a correction circuit that drives the correction circuit. A calibration device for a noise figure meter, comprising a drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15223289U JPH0390090U (en) | 1989-12-27 | 1989-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15223289U JPH0390090U (en) | 1989-12-27 | 1989-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0390090U true JPH0390090U (en) | 1991-09-13 |
Family
ID=31698504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15223289U Pending JPH0390090U (en) | 1989-12-27 | 1989-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0390090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009145127A1 (en) * | 2008-05-28 | 2009-12-03 | 株式会社アドバンテスト | Excessive noise ratio deriving apparatus, noise factor deriving apparatus, method, program, and recording medium |
| JP2014092400A (en) * | 2012-11-01 | 2014-05-19 | Anritsu Corp | Measurement device |
-
1989
- 1989-12-27 JP JP15223289U patent/JPH0390090U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009145127A1 (en) * | 2008-05-28 | 2009-12-03 | 株式会社アドバンテスト | Excessive noise ratio deriving apparatus, noise factor deriving apparatus, method, program, and recording medium |
| JP2009288019A (en) * | 2008-05-28 | 2009-12-10 | Advantest Corp | Excessive noise ratio deriving device, noise figure deriving device, method, program, and recording medium |
| JP2014092400A (en) * | 2012-11-01 | 2014-05-19 | Anritsu Corp | Measurement device |
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