Saving a File

Viewing Catalogs and Saving Files

5.Enter a filename by pressing Name. The Alpha Editor appears. For this example you will name the file, “TEST1”. (The numeric keypad is also available for the filename.) Note that the file extension is always set by the system and for this file type the extension is TRC. You must now press the Enter (hardkey) to get back to the Save menu.

NOTE	You need to use a filename that does not already exist in the current
	directory. The filename is limited to eight characters, alpha (A-Z) or numeric
	(0-9) in any combination. The analyzer will not allow you to overwrite an
	existing file. If you select a filename that already exists, the status bar will
	display the message: File already exists. If you do not choose a filename,
	the analyzer will automatically generate a name based on the type of file you
	are saving (Setup: SETUP, State: STATE, Trace: TRACE, Limits: LIMIT,
	Corrections: COREC, Screen: SCREN). It also generates a three digit integer
	(starting at 000 and extending through 999, remembering the previously
	saved value through a power cycle) which it adds to the name, for example:
	TRACE056.TRC. Also note that this three digit integer increments upon each
	attempted save until a unique filename is created, without regard to the
	success of the save.

6.The destination for the saved file is shown in the Path: field. In this example, you will

select the path as C:\START\. If the correct location is not listed in the Path: field, change directories as follows:

a.Press Dir Up or Dir Select and use the step keys or knob, to highlight the desired destination directory.

b.Press Dir Select and confirm your choice displayed in the Path: field.

7.Press Save Now or Save (hardkey) to save the file to the C:\Start\ location. The message Saving Now is displayed during this operation. For this example, the status line displays: C:\START\TEST1.TRC file saved.

NOTE	When saving to drive (A:), never remove the floppy disk during the save
	operation. To do so could corrupt all data on the floppy disk.

Chapter 4

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.