Agilent Technologies 89441A manual To Use Time Gating, Display should now appear as shown below

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Using Gating to Characterize a Burst Signal

To Use Time Gating

First we’ll look at the spectrum of the signal and see that three components exist. Then we’ll look at the time display of the burst signal and analyze each burst separately to determine which spectral components exist in each burst.

1Select the baseband receiver mode and initialize the analyzer:

Press [Instrument Mode] [receiver] [RF section (0-10 MHz)]. Press [Preset].

2Load the source signal file BURST.DAT into data register D3:

Insert the Signals Disk in the analyzer’s disk drive.

Press [Save/Recall], [default disk], [internal disk] to select the internal disk drive. Press [Return] (bottom softkey), [catalog on] to display the files on the disk. Rotate the knob until the file BURST.DAT is highlighted.

Press [recall trace], [from file into D3], [enter].

3Connect the SOURCE output to the INPUT with a BNC cable.

4Turn on the source and select arbitrary signal D3:

Press [Source], [source on], [source type], [arb data reg], [D3], [Return], [arbitrary]. Press [Average], [average on].

The display should now appear as shown below.

The spectrum with averaging turned on. Note existence of three components.

3-2

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Contents Agilent Technologies 89441A Getting Started Guide Analyzer at a Glance Iii Front PanelThis page left intentionally blank Saftey Summary Fuses Safety Symbols Notation Conventions This Book This page left intentionally blank Table of Contents General Tasks XiiUsing Online Help To learn about online help Enter the online help system Press HelpTo display help for hardkeys and softkeys To display a related help topic To select a topic from the help index Page Making Simple Noise Measurements To measure random noise Start an averaged measurementTo measure band power Turn on the band power markersTo measure signal to noise ratios Turn on the carrier-to-noise marker Carrier-to-noise ratio normalized to one Hertz Page Using Gating to Characterize a Burst Signal To Use Time Gating Display should now appear as shown belowExamine the second burst Configure the display and the measurementSet up the time gating and examine the first burst Page Measuring Relative Phase To measure the relative phase of an AM signal Measuring Relative Phase To measure the relative phase of an PM signal Zero the offset marker on the carrierCharacterizing a Filter If section for network measurements To set up a frequency response measurementHave option AY7 Press Auto Scale To use the absolute marker To use the relative marker To use the search marker To display phase Specify phase data for the second traceTo display coherence Activate the second trace and select a coherence measurementGeneral Tasks To set up peripherals General Tasks To save data with an internal or RAM disk To recall data with an internal or RAM disk Press ReturnTo format a disk Define a math function Press Math, define F1 To create a math functionDefine a constant To use a math function To display a summary of instrument parameters Press measurement state or input/source statePage Preparing the Analyzer for Use Preparing the Analyzer for Use To chassis ground Analyzer cabinet can subject the operator to lethal voltages Power if it is damaged To do the incoming inspectionPreparing the Analyzer for Use To connect the sections Preparing the Analyzer for Use To install the analyzer To change the if section’s line-voltage switch SelectTo change the RF section’s line-voltage switch To change the if section’s fuse To change the RF section’s fuse 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 deviceTo connect the analyzer to an Gpib device To connect the analyzer to an external monitorConnect the other end of the keyboard cable to the keyboard Set the if section’s power switch to on lTo connect the optional keyboard To connect the optional minimum loss pad To clean the screen To store the analyzerTo transport the analyzer Electricity which can damage electronic componentsIf 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 Basic HT Gpib SNR Dqpsk HTQAM SNR HTSee also traces FSK Gpib HTGpib LAN Manuals, for this product HT See LAN QAM HT RAMRPG See knobSource LED Sync not Found HT TdmaPSD HT EXT Trigger LED HTVSB Page Agilent 89400-Series Documentation Roadmap Need Assistance?