User`s guide

Agilent PXT Wireless Communications Test Set
User’s Guide
1
1 Introduction
Welcome to the User’s Guide for the Agilent E6621A PXT Wireless Communications Test Set (PXT). The
purpose of this guide is to provide you with what you need to know after you have finished performing the
setup procedures described in the Getting Started Guide, that you received with your test set. It also
provides key menu descriptions, measurement examples, LTE concepts, and where you can go to get
additional help information.
Your test set will help you meet your stringent time-to-market schedules and design quality goals. From
protocol development through RF conformance and interoperability testing, the PXT is a powerful, scalable
user equipment (UE) test platform. The advanced capabilities of the PXT include real-time, system-rate
network and base station emulation. The test set also provides bench-top network emulation for quick and
easy UE application and performance testing. Downlink MIMO, RF measurements and end-to-end IP data
connections are just a few of the many features that will make your UE development process more
efficient and successful.
This User’s Guide documents all functions available for the instrument. Menu functions which require an
option you have not selected are grayed out.
Agilent E6621A PXT Overview
The Agilent E6621A PXT is designed to test and analyze the performance and signaling of LTE UEs based
on the 3GPP standard. The PXT has two operating modes:
Figure 1-1: Agilent E6621A PXT Wireless Communications Test Set
Base Station Emulator (BSE)
In BSE mode, the PXT simulates the operation of an LTE eNodeB, for use in the development and test of
LTE UEs. In this mode, you can setup a call, establish a link, and transmit data.
Signal Analyzer (SA)
In Signal Analyzer (SA) mode, the PXT can be used to analyze LTE signals using modulation and spectrum
analysis. The Modulation Analysis mode displays the constellation and modulation errors of the signal.
The Spectrum Analysis functionality, implemented using a Fast Fourier Transform (FFT) algorithm, displays
the measured LTE signal in the frequency domain.