Language Reference

 

 

 

MEASure Group of Commands

 

 

 

Measurement

n

Results Returned

Type

 

 

 

 

 

 

(For cdma2000

4

Returns the frequency-domain spectrum trace data for the

and W-CDMA

Basic,

entire frequency range being measured.

the data is only

 

 

cdmaOne,

With the spectrum view selected

available with

cdma2000,

(DISPlay:ACP:VIEW SPECtrum) and the spectrum trace on

spectrum

W-CDMA

(SENSe:ACP:SPECtrum:ENABle):

display selected)

(3GPP), or

 

 

 

•

In FFT mode (SENSe:ACP:SWEep:TYPE FFT) the number

 

W-CDMA

 

 

of trace points returned are 343 (cdma2000) or 1715

 

(Trial &

 

 

 

(W-CDMA). This is with the default span of 5 MHz

 

Arib) mode

 

 

 

(cdma2000) or 25 MHz (W-CDMA). The number of points

 

 

 

 

 

 

also varies if another offset frequency is set.

 

 

•

In sweep mode (SENSe:ACP:SWEep:TYPE SWEep), the

 

 

 

number of trace points returned is 601 (for cdma2000 or

 

 

 

W-CDMA) for any span.

 

 

With bar graph display selected, one point of –999.0 will be

 

 

returned.

 

 

 

 

5

Returns 4 comma-separated relative power values for the

 

iDEN

reference and offset channels:

 

 

 

 

mode

1.

Reference channel − relative power

 

 

2.

Reference channel − relative power (duplicate of above)

 

 

3.

Lower offset channel − relative power

 

 

4.

Upper offset channel − relative power

 

 

 

Total power

5

Returns 12 comma-separated scalar values (in dBm) of the

reference

Basic,

absolute power of the center and the offset frequencies:

 

 

 

 

cdmaOne,

1.

Upper adjacent chan center frequency

 

cdma2000,

2.

Lower adjacent chan center frequency

 

W-CDMA

3.

Negative offset frequency (1)

 

(3GPP), or

4.

Positive offset frequency (1)

 

W-CDMA

 

. . .

 

(Trial &

 

 

Arib) mode

1.

Negative offset frequency (5)

 

 

 

 

2.

Positive offset frequency (5)

 

 

 

Power spectral

5

Returns 12 comma-separated scalar values (in dBm/Hz) of the

density

Basic,

absolute power of the center and the offset frequencies:

reference

 

 

cdmaOne,

1.

Upper adjacent chan center frequency

 

 

cdma2000,

2.

Lower adjacent chan center frequency

 

W-CDMA

3.

Negative offset frequency (1)

 

(3GPP), or

4.

Positive offset frequency (1)

 

W-CDMA

 

. . .

 

(Trial &

 

 

Arib) mode

1.

Negative offset frequency (5)

 

 

 

 

2.

Positive offset frequency (5)

 

 

 

 

Chapter 5

263

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Image 263
Agilent Technologies E4406A VSA manual
Page 262 Page 264

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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