Agilent Technologies 346C Dokumentacja

Agilent PSA Series Spectrum AnalyzersNoise Figure Measurements PersonalityTechnical Overview with Self-Guided DemonstrationOption 219The noise figure

10Figure 11.Display of limit lineUp to four limit lines can be set, twofor the upper graph and two for thelower graph. The limit lines for theupper gr

11Figure 12.Uncertaintycalculator displayNoise figure uncertainty calculatorWhen making a noise figure measure-ment, there are many aspects of themeas

12Noise figure measurements using a mixer as the DUTWhen a down conversion is included in the noise figure measurement, forexample measuring the noise

13In this application the mixer is partof the noise figure measurement system. The diagram below shows the DUT and the mixer as the downconverter. The

141. Performance above 3 GHz depends on the gain ofthe DUT and whether or not a preamplifier is used.Please refer to the Noise Figure Guide, literatur

15PSA Series spectrum analyzerE4443A 3 Hz to 6.7 GHzE4445A 3 Hz to 13.2 GHzE4440A 3 Hz to 26.5 GHzE4446A 3 Hz to 44 GHzE4448A 3 Hz to 50 GHzOptionsTo

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2A key measurement in the development of devices and systems is its noisefigure. The overall noise figure of asystem is one of the limiting factorsin

3To perform the following demonstrations,the PSA requires these options.Demonstration preparationTo configure the measurement system, simply connect t

4Instructions KeystrokesEnable the noise figure measurement personality. [Preset] [Mode] ({More} if necessary) {Noise Figure}Enter the ENR numbers fro

5Calibration of the noise figure measurement personalityIn order to make accurate measure-ments, the personality must first becalibrated. Calibration

6The noise figure measurement personality has many features to help you interpret and analyze noisefigure measurements. Select and Zoom Active Window:

7General, markers and source tabsThere are three tabs available at thebottom of the screen. These tabs areaccessed using the left and rightarrow keys.

8The scale in dB per division and the reference values can be adjustedto give an optimized view of themeasured results. The scale per division can be

9This exercise illustrates the use ofmarkers.A total of four normal markers canbe placed on the graphical display.The placement of the markers is limi