Language Reference

CALCulate Subsystem

Measurement

Available Traces

Markers

 

 

Available?

 

 

 

SPECtrum - (frequency domain)

RFENvelope (n=2)a

yes

(all modes)

for Service mode

 

 

 

 

IQ (n=3)a

 

 

SPECtrum (n=4)a

 

 

ASPectrum (n=7)a

 

WAVEform - (time domain)

RFENvelope (n=2)a

yes

(all modes)

IQ (n=8)a

 

a. The n number indicates the sub-opcode that corresponds to this trace. Detailed descriptions of the trace data can be found in the MEASure subsystem documentation by looking up the sub-opcode for the appropriate measurement.

Calculate Peaks of Trace Data

:CALCulate:DATA[n]:PEAKs?

<threshold>,<excursion>[,AMPLitudeFREQuencyTIME]

Returns a list of peaks for the designated trace data n for the currently selected measurement. The peaks must meet the requirements of the peak threshold and excursion values.

The command can be used with sub-opcodes (n) for any measurement results that are trace data. See the table above. Subopcode n=0, raw trace data cannot be searched for peaks. Both real and complex traces can be searched, but complex traces are converted to magnitude in dBm.

Threshold - is the level below which trace data peaks are ignored.

Excursion - To be defined as a peak, the signal must rise above the threshold by a minimum amplitude change. Excursion is measured from the lowest point above the threshold (of the rising edge of the peak), to the highest signal point that begins the falling edge.

Amplitude - lists the peaks in order of descending amplitude, so the highest peak is listed first. This is the default peak order listing if the optional parameter is not specified.

Frequency - lists the peaks in order of occurrence, left to right across the x-axis

Time - lists the peaks in order of occurrence, left to right across the x-axis

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Agilent Technologies E4406A VSA manual Calculate Peaks of Trace Data
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E4406A VSA specifications

The Agilent Technologies E4406A Vector Signal Analyzer (VSA) is a sophisticated instrument designed for the analysis of complex signals. This versatile device is widely used in various fields, including telecommunications, broadcasting, and aerospace, thanks to its high-performance capabilities and advanced features.

One of the standout characteristics of the E4406A is its ability to analyze digital modulation schemes. It supports a wide range of formats, including 2G, 3G, 4G, and emerging standards, providing a comprehensive tool for engineers and researchers working with modern communication systems. The VSA is particularly valued for its flexibility in signal analysis, allowing users to capture and demodulate signals in real-time.

The E4406A utilizes advanced measurement technologies that ensure precise signal analysis. With a frequency range from 50 kHz to 6 GHz, the VSA can handle various applications, making it a suitable choice for both R&D and production testing. The instrument employs digital signal processing techniques, enabling high-resolution measurements and exceptional dynamic range. This ensures accurate interpretation of signals, even in the presence of noise or interference.

Another significant feature of the E4406A is its user-friendly interface. The combination of a graphical display and intuitive controls allows users to visualize complex waveforms and spectra easily. The software capabilities of the E4406A further enhance its usability, providing various analysis options including error vector magnitude (EVM), adjacent channel power (ACP), and spectrum occupancy. These tools allow engineers to diagnose issues rapidly and efficiently optimize their designs.

The modularity of the E4406A is a key aspect of its design. Users can upgrade their instrument with various option packs and software for specific applications, making it adaptable to a variety of testing scenarios. This flexibility ensures that the VSA remains relevant as technology evolves and new standards emerge.

In conclusion, the Agilent E4406A Vector Signal Analyzer stands out due to its combination of advanced measurement capabilities, user-friendly interface, and adaptability. Its extensive feature set makes it an essential tool for professionals involved in the development and testing of modern communication systems. Whether for research, design validation, or quality control, the E4406A delivers high-performance signal analysis that meets the demands of today's fast-paced technology landscape.
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