Making Basic Measurements

Demodulating AM Signals (Using the Analyzer As a Fixed Tuned Receiver)

6. Select zero span by either pressing SPAN, 0, Hz; or pressing SPAN,

Zero Span. See Figure 1-51.

7. Change the sweep time to 5 ms by pressing Sweep,

Sweep Time (Man), 5, ms.

8. Since the modulation is a steady tone, you can use video trigger to

 

trigger the analyzer sweep on the waveform and stabilize the trace,

 

much like an oscilloscope by pressing Trig, Video, and adjusting the

 

trigger level with the front-panel knob until the signal stabilizes. See

 

Figure 1-52.

 

If you are viewing an off-the-air signal you will not be able to

 

stabilize the waveform.

 

If the Trigger Level is set too high or too low when this trigger mode is

NOTE

 

activated, the sweep will stop. You will need to adjust the trigger level

 

up or down with the front-panel knob until the sweep begins again.

 

 

Figure 1-51 Measuring Modulation In Zero Span

Chapter 1

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Agilent Technologies E7402A, E7405A, E7404A, E7403A, E7401A manual Measuring Modulation In Zero Span
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E7402A, E7405A, E7404A, E7401A, E7403A specifications

Agilent Technologies, a leader in test and measurement solutions, offers a range of spectrum analyzers designed to meet the evolving demands of the electronics industry. The E7403A, E7401A, E7404A, E7405A, and E7402A are prominent models that embody advanced features and technologies, enhancing performance, accuracy, and user experience.

The E7403A is recognized for its high-quality performance and wide frequency range. This model offers frequency coverage from 9 kHz to 3 GHz, making it suitable for both commercial and academic research applications. With a phase noise of -100 dBc/Hz at 10 kHz offset, it delivers exceptional sensitivity. The E7403A also features a built-in tracking generator, facilitating effective signal generation for testing.

Next in line, the E7401A provides similar frequency coverage but is optimized for portable functionality. Weighing significantly less than its counterparts, it is easy to transport, making it ideal for field applications. Users benefit from its fast sweep speed of up to 3 GHz, which is crucial in quickly identifying and analyzing signals.

The E7404A excels in its comprehensive analysis capabilities. With a frequency range extending up to 6 GHz, it supports more demanding applications, including wireless communications and satellite technology. Its advanced digital signal processing capabilities enable the analysis of complex modulated signals, providing engineers with the data needed to troubleshoot and optimize system performance.

The E7405A is a highly versatile model that offers frequency coverage from 9 kHz to 20 GHz. This wide frequency range, combined with high dynamic range, supports the testing of various electronic devices and systems. It features advanced measurement options including occupied bandwidth, adjacent channel power, and sensitivity measurements, which are critical for compliance testing in communication systems.

Lastly, the E7402A is designed for users who require a spectrum analyzer with enhanced functionality at a competitive price. It reaches frequencies of up to 1.5 GHz, making it suitable for various applications including RF design, development, and manufacturing. Its user-friendly interface ensures that both novice and experienced users can navigate its features with ease.

In conclusion, Agilent Technologies' E7403A, E7401A, E7404A, E7405A, and E7402A spectrum analyzers provide a robust set of features tailored to meet diverse industry needs. Utilizing sophisticated technologies, these models ensure precise and efficient signal analysis, making them indispensable tools for engineers and researchers in the fast-paced world of electronics.
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