Acterna SDA-5500 Analyzer
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Модель:
SDA-5500
Дата:
2001
Категория:
Группа:
Описание:
Digital Analyzer
Информация
The Stealth Digital Analyzer (SDA) cable network measurement
tools test a wide range of critical parameters, helping you
prove and maintain your system’s performance. Advanced
features include tools to support preventative maintenance
programs for improving network quality.
Applications include aligning amplifiers such as optical
nodes, testing the performance of both forward and reverse
path networks, finding and fixing sources of reverse path
ingress, measuring signal quality (both continuous and
bursty digital carriers), and fulfilling FCC and CENELEC
proof-of-performance requirements.
You can perform comprehensive troubleshooting and
preventative maintenance tests with accuracy and ease using
Acterna’s SDA products:
• Quickly check frequency response, signal levels, hum,
carrier-to-noise (C/N) ratio, depth of modulation, and
monitor the general performance of the cable system
• Perform tests without interfering with CATV subscribers'
service
• Evaluate system performance precisely and diagnose and
eliminate problems quickly to maintain quality operation of
your CATV system equipment.
Acterna’s Stealth Sweep System consists of at least two
major components:
a headend transmitter and a field receiver.
SDA-5500 Stealth Sweep Transceiver
The SDA-5500 is a standard 19" rack mount unit weighing
approximately fifteen pounds. Its 320 X 240 dot matrix LCD
shows measurement data in both graphical and numerical form.
It is a full-featured signal analysis meter with a complete
spectrum display and an analog representation of single
channel measurement data. When tuned to a specific channel,
a comprehensive set of information is provided, including:
• tuned channel
• video frequency and level
• audio frequency and level
• differences between video and audio carrier levels
The SDA-5500 performs essential cable TV system preventive
maintenance tests with accuracy and ease. Signal levels,
hum, C/N, and, in tandem with the SDA-5000
frequency
response, can be quickly tested without interfering
with subscribers’ service.
The Sweep System is made up of two components: the field
unit (SDA- 5000), and one or both of the headend units
/SDA-5500 and(SDA-5510).
Sweep response is tested by injecting a low-level signal in
vacant spectrum areas and by monitoring cable system carrier
levels in occupied spectrum areas. In addition to generating
the sweep test signal, the SDA-5500 continuously monitors
the system carriers. It sends headend level readings
to the field receiver with every sweep update. In this way,
any headend level changes are compensated for by the
receiver, maintaining measurement accuracy.
Sweep response measurements won’t be affected by changing
signal levels in the headend. The SDA-5500 has the
measurement capability of the SDA-5000 so you can keep an
eye on headend levels.
With the Reverse Sweep option (OPT2), a transmitter is built
into the hand-held sweep receiver. The headend sweep
transmitter (SDA-5500, is set up to receive the reverse
sweep sent from the field. When a reverse sweep is
activated from a field test point, the headend transmitter
receives the telemetry signal indicating which receiver is
sending the sweep. The headend transmitter measures the
sweep and sends the results to the field via its telemetry
signal. The field receiver with the tagged serial number
then displays the sweep response as measured in the headend.
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Руководство пользователя
Страницы:
410
Размер:
9.25 Mbytes (9694422 Bytes)
Язык:
english
Пересмотр:
D
Hасто́льная кни́га ID:
6510-00-0442
Дата:
2001 05 01
Качество:
Электронный документ, ни сканирование, очень хорошо читается.
Дата загрузки:
2018 08 16
MD5:
b0a733237ca238f17e717ac62136a3ec
Загрузки:
1948
Информация
ABOUT THE MANUAL
Section I Introduction
Chapter 1 introduces you to the new SDA family of CATV test
equipment. In this chapter, you learn about the features and
capabilities of the SDA field and headend units, and about
the various options available.
Section II Field Units
Chapter 2, "Description and Basic Operation," describes the
SDA-5000’s user Interface and its basic modes of operation.
You also learn basic configuration procedures and what you
need to print files and screen shots.
Chapter 3, "Channel Plans," shows you how to configure your
unit’s channel plan capability, edit channel plan
parameters, create, copy and edit channel
plans, and how to configure a digital carrier.
Chapter 4, "Field Sweeping with the SDA-5000
" begins with
coverage of test point compensation and how to configure
your SDA-5000, Sweep configuration is covered in detail,
after which you learn how to connect to Amplifier test
points and how to conduct forward, reverse, sweepless, and
loopback sweeps. This chapter also describes reverse
amplifier alignment.
Chapter 5, "Reverse Path Troubleshooting," describes the
problems most common to the return path, offers tips to help
you more quickly trace the trouble, and shows you how to use
the Zero Span mode to look at TDMA signals.
Chapter 6, "Measuring System Performance," explains how to
evaluate system performance by measuring key parameters.
Operations covered include Level, Tilt, Scan,
Carrier-to-Noise ratio (C/N), Hum, Modulation-Demodulation,
Composite Second Order (CSO) and Composite Triple Beat (CTB).
Chapter 7, "Spectrum Analyzer Mode," describes the
SDA-5000’s spectrum analysis capabilities and how it can
assist you in general troubleshooting and in examining TDMA
signals with the Zero Span mode. CSO/CTB mode is covered as
well.
Chapter 8, "PathTrak Field View (OPT3)," shows you how to
use PathTrak mode for return path troubleshooting by
comparing spectrum measurements at the node with current
conditions at the headend.
Chapter 9, "Digital Analysis (QAM View OPT4)," explains how
to use the new QAM digital channel tool. You’ll learn to
measure the most critical characteristics of a digital
channel, and how to use a spectrum view of ingress. You’ll
also learn how to use the constellation view to assist you
in your troubleshooting efforts and how to use the equalizer
to correct the effects of reflections in the transmission path.
Chapter 10, "Automatic Test," explains how to perform
automatic system tests, an easy way to acquire
proof-of-performance compliance data. You learn how to
create test locations and how to edit location parameters,
as well as how to set testing schedules and how to view and
print test reports.
Chapter 11, "Files," describes how to store, view, or print
files created from field measurement data. Sweep reference
files and measurement files are covered, along with the
procedure for comparing a reference file with a "live"
sweep in the field.
Chapter 12, "Maintenance," covers the routine maintenance
tasks that a service technician can perform in the field.
Inspection, connector replacement, battery terminal
cleaning, general cleaning, and calibration are all covered.
The chapter ends with a list of Acterna service centers
worldwide.
Section III Headend Units
Chapter 13, "Description and Basic Operation of the SDA-5500
and SDA-5510
" describes the user Interface and basic modes
of operation for the SDA headend units /SDA-5500 and
SDA-5510). You also learn basic configuration procedures and
what you need to print files and screen shots.
Chapter 14, "SDA-5500 SDA-5510/Sweep Configuration," shows
you how to configure the SDA-5500 for forward sweep and for
reverse sweep. It covers wiring connections, telemetry and
frequency settings, channel plan creation and editing, and
how to test the transmitter setup. You’ll also find
important information about using the SDA-5500 and SDA-5510
together. In addition, this chapter includes a section on
sweep history and theory that will deepen your understanding
of what sweeping is and how it works.
Section IV Appendices
Appendix A, "Application Notes," contains the full text of
four application notes that help to clarify many of the
issues covered in other chapters in the manual. The four
application notes are: "Forward Sweep and Balance,"
"Reverse Sweep and Balance," "Return Path Troubleshooting,"
and "Proofing and Testing."
Appendix B, "Specifications," lists the technical
specifications for each unit.
Appendix C, "Status Indicators and Icons," provides a
descriptive list of indicators and icons that you’ll find on
the SDA’s screens and used throughout the manual.
Appendix D, "User and Error Messages," describes many of the
messages that appear on-screen indicating a problem in
operation or a malfunctioning unit.
The Glossary defines many of the terms used throughout the
manual.