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Agilent Technologies 89441A To change the RF section’s fuse, AC Line Voltage, Fuse, RF Section

Models: 89441A

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To change the RF section’s fuse

Preparing the Analyzer for Use

To change the RF section’s fuse

The fuse is installed at the factory to match the most commonly used line voltage in the country of destination.

1Unplug the power cord from the RF section (the section with “Agilent 89431A” silk screened on its lower left rear panel).

2Using a small screw driver, pry open the power selector cover.

3Pull the white fuse holder out of the power selector and remove the fuse from the fuse holder.

4Select the proper fuse and place in the fuse holder.

	AC Line Voltage		Selector			Fuse
RF Section	Range	Frequency	Selector	Agilent Part		Type
RF Section	Range	Frequency	Switch	Number		Type
Agilent 89431A	90-110 Vrms	47-63 Hz	100	2110-0381	3 A 250 V Slow Blow
Agilent 89431A	103-140 Vrms	47-63 Hz	120	2110-0381	3 A 250 V Slow Blow
Agilent 89431A	198-242 Vrms	47-63 Hz	220	2110-0304 1.5 A 250 V Slow Blow
Agilent 89431A	216-264 Vrms	47-63 Hz	240	2110-0304	1.5 A 250 V Slow Blow

1Align the white arrow on top of the fuse holder with the white arrow on the power selector cover. All three arrows should point in the same direction. Push the fuse holder into the top slot of the power selector.

2Close the power selector by pushing firmly on the power selector cover.

3Check that the correct line voltage appears through the power selector cover.

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Agilent Technologies 89441A manual To change the RF section’s fuse, AC Line Voltage, Fuse, RF Section

Contents

Agilent Technologies 89441A Getting Started Guide The Analyzer at a Glance Front Panel This page left intentionally blank ENVIRONMENTAL CONDITIONS Saftey SummaryBEFORE APPLYING POWER GENERALFUSES DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHEREDO NOT REMOVE THE INSTRUMENT COVER Alternating current Safety SymbolsWarning, risk of electric shock Caution, refer to accompanying documentsNotation Conventions To Learn More About the Analyzer In This BookThis page left intentionally blank 2 Making Simple Noise Measurements 1 Using Online Help3 Using Gating to Characterize a Burst Signal 4 Measuring Relative PhaseIndex Documentation Road Map Need Assistance Inspection and Installation6 General Tasks 7 Preparing the Analyzer for UseUsing Online Help To learn about online help To display help for hardkeys and softkeys 2Display help for a hardkey To display a related help topicUsing Online Help 1Enter the online help system Press HelpTo 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 Carrier-to-noiseratio normalized to one Hertz Measured noise bandPage Using Gating to Characterize a Burst Signal To Use Time Gating Using Gating to Characterize a Burst Signal 5Configure the display and the measurement7Examine the second burst 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 To create a math function You can create up to 6 functions and 5 constantsGeneral Tasks 4Press Auto Scale To use a math functionGeneral Tasks Press Measurement Data, math func, F1To display a summary of instrument parameters Page Preparing the Analyzer for Use AC Line Voltage Preparing the Analyzer for Useto chassis ground Preparing the Analyzer for Use number for a complete cable including the plugUL listed for use in the United States of America power if it is damaged To do the incoming inspection7Set the IF section’s power switch to on To connect the sections Preparing the Analyzer for Use To install the analyzer To change the IF section’s line-voltageswitch Selectmeasure the line voltage AC Line Voltage To change the RF section’s line-voltageswitchRange To change the IF section’s fuseAC Line Voltage FuseRF Section To change the RF section’s fuseAC Line Voltage Fuseinternet protocol address Return To connect the analyzer to a LANTo connect the analyzer to a parallel device To connect the analyzer to a serial deviceTo connect the analyzer to an GPIB device To connect the analyzer to an external monitorCommand Reference To connect the optional keyboard To connect the optional minimum loss pad lTo store the analyzer To clean the screenlTo 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 Index continuedSee also FSK See also traces IndexIndex Index Index See LAN IndexIndex See knob IndexIndex block diagramSee also NADC IndexSee also grids Indextime data OP 14-15time data softkey HT See also displaySee lan IndexPage Then read the analyzer’s Agilent 89400-SeriesDocumentation RoadmapAnd you want to If you are thinking aboutNeed Assistance?