Chapter 4

 

Operations, Calibration

4-1INTRODUCTION

Measurements always include a degree of uncertainty due to imperfec-

 

tions in the measurement system. The measured value is always a combi-

 

nation of the actual value plus the systematic measurement errors. Cali-

 

bration, as it applies to network analysis, characterizes the systematic

 

measurement errors and subtracts them from the measured value to ob-

 

tain the actual value. Each of the ME7840A measurements requires a cal-

 

ibration to account for measurement uncertainties. This chapter de-

 

scribes the measurement calibration operations of the Model ME7840A

 

Power Amplifier Test System software.

4-2

4-3

OPERATION,

Refer to Chapter 3 for general operation and setup of the ME7840A.

GENERAL

 

PROGRAM FILES

The PATS software sets up the MS462XC DRA Scorpion according to in-

 

structions in the “Calibration Specification” files, which are accessed from

 

the “Tools,” “Run Calibration Procedure” function that is described later

 

in this chapter. These are user-editable text files that establish the condi-

 

tions during calibration and measurement. How to edit these files is de-

 

scribed in Appendix A.

 

The calibration data and Scorpion switch settings that result from follow-

 

ing a “Run Calibration Procedure” specification file are saved as a *.cal

 

file. These *.cal files are accessed using the “Tools,” “Calibration File Op-

 

tion” function that was described in paragraph 3-6, page 3-8.When one

 

of these files is recalled using the “Calibration File Option,” the Scorpion

 

is ready to acquire correct (calibrated) measurements.

 

Examples of instrument settings / conditions that reside in the Calibra-

 

tion Specification files include:

 

￿ Sweep start and stop frequencies

 

￿ Number of data points

 

￿ Source 1 and 2 power levels

 

￿ Scorpion IF bandwidth

 

￿ Averaging

 

￿ Scorpion display settings

 

Some of these parameters can also be specified / modified by the User In-

 

put window before each actual measurement so long as such modification

 

is consistent with the calibration to be applied.

ME7840A POM

4-1

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Anritsu ME7840A manual Chapter, Operations, Calibration, 1INTRODUCTION, General Program Files
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ME7840A specifications

The Anritsu ME7840A is an advanced test solution designed for characterizing and verifying the performance of wireless devices. With the rapid evolution of communication technologies, specifically in the realms of 5G and beyond, the ME7840A plays a crucial role in ensuring that devices meet the rigorous standards required for modern connectivity.

One of the primary features of the ME7840A is its high-performance vector signal analysis. It supports a broad spectrum of modulation formats, making it an ideal choice for testing a wide variety of wireless communication technologies. This includes LTE, NR (New Radio), Wi-Fi 6, and more. The system is capable of handling both uplink and downlink tests, providing a comprehensive solution for manufacturers looking to optimize their devices' performance.

Another key feature is its modular architecture, allowing for extensive customization based on specific testing needs. This flexibility means that users can mix and match different modules to create a tailored test setup that suits their particular requirements, whether they are focused on RF parameters, protocol conformance, or more specialized tests.

The ME7840A also integrates several advanced measurement technologies. For instance, its real-time signal analysis capability enables users to conduct in-depth examinations of complex signals, offering insights that can drive innovation and improve device reliability. Furthermore, this platform supports high-speed measurements with high accuracy, ensuring that manufacturers can achieve precise results in their testing processes.

Moreover, the ME7840A is equipped with automation features that streamline the testing process, significantly reducing the time and effort required to conduct tests. The system can be integrated into automated test environments, which is a key advantage for manufacturers seeking to enhance their production efficiency.

The Anritsu ME7840A's user-friendly interface also deserves mention. This accessibility ensures that engineers can quickly learn how to operate the system, allowing them to focus more on their testing objectives rather than on navigating complex software.

In summary, the Anritsu ME7840A is a versatile and powerful test solution that meets the diverse needs of the wireless industry. With its robust features, modular design, advanced measurement capabilities, and automation options, it is an essential tool for manufacturers aiming to stay competitive in today's fast-paced technology landscape.
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