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HP E4440A, E4448A, E4446A, E4445A, E4443A manual Before Calling Agilent Technologies, Check the Basics

Models: E4443A E4448A E4445A E4446A E4440A

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In Case of Difficulty

Before Calling Agilent Technologies

Before Calling Agilent Technologies

Check the Basics

❏Is there power at the receptacle?

❏Make sure there is no disk in the front-panel disk drive.

❏Is the analyzer turned on? Check to see if the green LED above the power switch is on. Also, listen for internal fan noise to determine if the analyzer cooling fans are running.

❏If other equipment, cables, and connectors are being used with your spectrum analyzer, make sure they are connected properly and operating correctly.

❏Review the measurement procedures being performed when the problem first appeared. Are all of the settings correct?

❏If the analyzer is not functioning as expected, return the analyzer to a known state by pressing Preset, and Factory Preset (if displayed).

NOTE

Some analyzer settings are not affected by a Preset. If you wish to reset the

 

analyzer configuration to the state it was in when it was originally sent from

 

the factory, press System, Power On/Preset, Preset Type, Factory. Then press the

 

green Preset key on the front panel.

 

 

❏Is the measurement being performed, and the results that are expected, within the specifications and capabilities of the analyzer? Refer to the Specifications guide for your analyzer.

❏If the analyzer is not communicating via the LAN connection, check for the presence of blinking yellow LEDs on the rear panel LAN connector. If the Rx (receive) LED is not blinking, check the LAN cable and LAN integrity.

NOTE

The analyzer must be powered on with the LAN already connected in order to

 

recognize the LAN port.

 

 

❏To meet specifications, the analyzer must be aligned. Either the Auto Align (On) feature must be selected (press System, Alignments, Auto Align, On), or the analyzer must be manually aligned at least once every 24 hours, or whenever the temperature changes more than 3°C. When Auto Align, On is selected, the AA screen annotation appears on the left edge of the display.

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Chapter 6

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Page 72
Image 72
HP E4440A, E4448A, E4446A, E4445A, E4443A manual Before Calling Agilent Technologies, Check the Basics
Page 71 Page 73

E4443A, E4448A, E4445A, E4446A, E4440A specifications

The HP E4440A, E4446A, E4445A, E4448A, and E4443A are high-performance spectrum analyzers designed to meet the testing and measurement needs of engineers and technicians in various industries. These models offer a combination of advanced technologies and features that enhance their functionality and usability.

Starting with the HP E4440A, this spectrum analyzer is well-known for its wide frequency range and excellent resolution bandwidth, making it ideal for characterizing RF signals. It is capable of analyzing signals from 9 kHz up to 1.5 GHz, providing a comprehensive tool for capturing a wide spectrum of frequencies. The E4440A features a sophisticated built-in signal analysis capability, including demodulation and specialized measurement functions that assist in the evaluation of complex signals.

The E4446A elevates performance further with a frequency range extending up to 6 GHz. This model includes advanced phase noise measurement capabilities, which are crucial for testing communication systems and ensuring signal integrity. Its large color display coupled with a user-friendly interface allows for easy navigation through various measurement settings.

For deeper insights into signal behavior, the HP E4445A stands out with its ability to perform real-time spectrum analysis. This feature allows engineers to capture transient signals and analyze them effectively, which is essential in modern RF design and troubleshooting. The E4445A also supports a range of modulation analysis tools enabling comprehensive testing of communication systems.

Meanwhile, the E4448A is recognized for its high dynamic range and low noise floor. These characteristics are essential for analyzing weak signals in the presence of stronger ones. Its enhanced sensitivity allows engineers to detect signals buried in noise, which is vital for applications such as spectrum monitoring and interference analysis.

Finally, the HP E4443A is tailored for more specialized applications, featuring a frequency range up to 3 GHz. It incorporates advanced digital signal processing techniques that facilitate accurate measurements even in challenging environments. Its portability and robust design make it a preferred choice for field applications, allowing users to perform spectrum analysis where needed.

In summary, the HP E4440A, E4446A, E4445A, E4448A, and E4443A spectrum analyzers offer a rich set of features and technologies that cater to the evolving demands of RF engineers. With their superior performance characteristics, they serve as invaluable tools across a variety of testing and measurement applications in the telecommunications and electronics sectors.