Agilent EXA Signal Analyzer

Power Suite Measurements

Description

Specifications

Supplemental Information

 

 

 

Case: Radio Std = IS-95 or J-STD-008

 

 

Method

 

RBW methoda

ACPR Relative Accuracy

 

 

Offsets < 750 kHzb

±0.08 dB

 

Offsets > 1.98 MHzc

±0.10 dB

 

a.The RBW method measures the power in the adjacent channels within the defined resolution bandwidth. The noise bandwidth of the RBW filter is nominally 1.055 times the 3.01 dB bandwidth. Therefore, the RBW method will nominally read 0.23 dB higher adjacent channel power than would a measurement using the integration bandwidth method, because the noise bandwidth of the integration bandwidth measurement is equal to that integration bandwidth. For cmdaOne ACPR measurements using the RBW method, the main channel is measured in a 3 MHz RBW, which does not respond to all the power in the carrier. Therefore, the carrier power is compensated by the expected under-response of the filter to a full width signal, of 0.15 dB. But the adjacent channel power is not compensated for the noise bandwidth effect. The reason the adjacent channel is not compensated is subtle. The RBW method of measuring ACPR is very similar to the preferred method of making measurements for compliance with FCC requirements, the source of the specifications for the cdmaOne Spur Close specifica- tions. ACPR is a spot measurement of Spur Close, and thus is best done with the RBW method, even though the results will disagree by 0.23 dB from the measurement made with a rectangular passband.

b.The specified ACPR accuracy applies if the measured ACPR substantially exceeds the ana- lyzer dynamic range at the specified offset. When this condition is not met, there are addi- tional errors due to the addition of analyzer spectral components to UUT spectral components. In the worst case at these offsets, the analyzer spectral components are all coher- ent with the UUT components; in a more typical case, one third of the analyzer spectral power will be coherent with the distortion components in the UUT. Coherent means that the phases of the UUT distortion components and the analyzer distortion components are in a fixed rela- tionship, and could be perfectly in-phase. This coherence is not intuitive to many users, because the signals themselves are usually pseudo-random; nonetheless, they can be coher- ent.

When the analyzer components are 100% coherent with the UUT components, the errors add in a voltage sense. That error is a function of the signal (UUT ACPR) to noise (analyzer ACPR dynamic range limitation) ratio, SN, in decibels.

The function is error = 20 × log(1 + 10−SN/20)

For example, if the UUT ACPR is −62 dB and the measurement floor is −82 dB, the SN is 20 dB and the error due to adding the analyzer distortion to that of the UUT is 0.83 dB.

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Agilent Technologies N9010A specifications Power Suite Measurements
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N9010A specifications

Agilent Technologies, now known as Keysight Technologies, offers a wide range of sophisticated measurement instruments, one of which is the N9010A, a high-performance signal analyzer. The N9010A is a versatile tool designed to meet the needs of engineers and researchers dealing with complex signal generation and analysis.

The N9010A signal analyzer is built on the X-Series signal analysis platform, making it an outstanding choice for various applications, including wireless communication, radar, and electronic warfare. Its main features include an extensive frequency range from 9 kHz to 6 GHz, which provides users with the capability to analyze a diverse array of signals.

One of the defining characteristics of the N9010A is its high dynamic range and sensitivity. The instrument has been engineered to ensure that weak signals can be accurately detected in the presence of strong interfering signals. This quality is crucial for applications such as spectrum monitoring and interference analysis.

Equipped with advanced digital signal processing techniques, the N9010A allows for real-time analysis of complex signals. The analyzer supports various modulation techniques and can perform measurements on frequency, time, and phase to provide a comprehensive view of signal performance. Users can leverage its abilities to analyze a wide range of formats including LTE, Wi-Fi, and many others.

Another significant feature of the N9010A is its flexibility. The instrument includes various software options and measurement applications that can be configured to meet specific testing requirements. This adaptability is essential for engineers who need to stay current with industry developments and evolving technologies.

User-friendliness is also a hallmark of the N9010A. The device features an intuitive interface that simplifies the navigation process, making it easier for users to set up tests and perform analyses with reduced training time.

Additionally, the N9010A can be integrated into a broader test environment, allowing for seamless operation within automated measurement systems. This capability enhances productivity and efficiency in design validation and compliance testing.

In summary, the Agilent Technologies N9010A signal analyzer combines advanced technology, high performance, and user-friendly features. Its ability to handle a wide range of applications makes it an essential tool in the toolbox of modern engineers and researchers working in signal analysis, making it a valuable investment in the pursuit of technological advancements.
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