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Agilent Technologies 89441A manual To measure random noise

Models: 89441A

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To measure random noise

Making Simple Noise Measurements

To measure random noise

1Initialize the analyzer: Press [Preset].

2Select a power spectral density measurement:

Press [Measurement Data], [PSD] (select ch1 with a 2-channel analyzer).

3Turn on averaging: Press [Average], [average on].

4Start an averaged measurement:

Press [Meas Restart].

5Use the knob to move the marker along the trace. The display should be similar to the one shown below.

To learn more about the choices you make in this measurement, display online help for the various keys used (see “Using Online Help” if you are not familiar with how to do this).

Normalized noise measurement

In this example you are measuring the noise-power of the analyzer’s noise floor. The displayed marker value reflects noise-power normalized to a 1-Hz bandwidth.

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Agilent Technologies 89441A manual To measure random noise

Contents

Agilent Technologies 89441A Getting Started Guide The Analyzer at a Glance Front Panel This page left intentionally blank Saftey Summary BEFORE APPLYING POWERGENERAL ENVIRONMENTAL CONDITIONSDO NOT REMOVE THE INSTRUMENT COVER FUSESDO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Safety Symbols Warning, risk of electric shockCaution, refer to accompanying documents Alternating currentNotation Conventions In This Book To Learn More About the AnalyzerThis page left intentionally blank 1 Using Online Help 3 Using Gating to Characterize a Burst Signal4 Measuring Relative Phase 2 Making Simple Noise MeasurementsInspection and Installation 6 General Tasks7 Preparing the Analyzer for Use Index Documentation Road Map Need AssistanceUsing Online Help To learn about online help To display help for hardkeys and softkeys To display a related help topic Using Online Help1Enter the online help system Press Help 2Display help for a hardkeyTo select a topic from the help index Page Making Simple Noise Measurements To measure random noise To measure band power To measure signal to noise ratios Measured noise band Carrier-to-noiseratio normalized to one HertzPage Using Gating to Characterize a Burst Signal To Use Time Gating 7Examine the second burst Using Gating to Characterize a Burst Signal5Configure the display and the measurement Page Measuring Relative Phase To measure the relative phase of an AM signal 6Activate two traces To measure the relative phase of an PM signal Characterizing a Filter To set up a frequency response measurement 5Start an averaged measurement To use the absolute marker To use the relative marker To use the search marker To display phase To display coherence General Tasks To set up peripherals 2Select the output format and device type To save data with an internal or RAM disk To recall data with an internal or RAM disk To format a disk General Tasks To create a math functionYou can create up to 6 functions and 5 constants To use a math function General TasksPress Measurement Data, math func, F1 4Press Auto ScaleTo display a summary of instrument parameters Page Preparing the Analyzer for Use Preparing the Analyzer for Use AC Line Voltageto chassis ground UL listed for use in the United States of America Preparing the Analyzer for Usenumber for a complete cable including the plug To do the incoming inspection power if it is damaged7Set the IF section’s power switch to on To connect the sections Preparing the Analyzer for Use To install the analyzer measure the line voltage To change the IF section’s line-voltageswitchSelect To change the RF section’s line-voltageswitch AC Line VoltageTo change the IF section’s fuse AC Line VoltageFuse RangeTo change the RF section’s fuse AC Line VoltageFuse RF SectionTo connect the analyzer to a LAN internet protocol address ReturnTo connect the analyzer to a serial device To connect the analyzer to a parallel deviceCommand Reference To connect the analyzer to an GPIB deviceTo connect the analyzer to an external monitor To connect the optional keyboard To connect the optional minimum loss pad To clean the screen lTo store the analyzerlTo transport the analyzer If the IF section will not power up If the RF section will not power up If the analyzer’s stop frequency is 10 MHz Page Index IndexIndex Index See also FSK Indexcontinued Index See also tracesIndex Index Index Index See LANIndex Index See knobblock diagram IndexIndex See also NADCIndex time data OP 14-15time data softkey HTSee also display See also gridsIndex See lanPage Agilent 89400-SeriesDocumentation Roadmap And you want toIf you are thinking about Then read the analyzer’sNeed Assistance?