Symmetricom 59552A Manuale utente
097-59552-01
Issue 1: Apr 00
Copyright © 2000 Symmetricom, Inc. All rights reserved. Printed in U.S.A.
59552A
Fiber-Optic Distribution
Amplifier
and
59553A
Fiber-Optic Receiver
User’s Guide
This manual describes a Symmetricom fiber-optic
distribution amplifier and a Symmetricom fiber-
optic receiver, including their system hardware and
software.
This operating manual is the primary document for
the 59552A Fiber-Optic Distribution Amplifier and
the 59553A Fiber-Optic Receiver.
This manual applies to the 59552A Fiber-Optic
Distribution Amplifier and 59553A Fiber-Optic
Receiver you have received unless update
information is included with the equipment.
For assistance, contact:
Symmetricom, Inc.
2300 Orchard Parkway
San Jose, CA 95131-1017
U.S.A. Call Center:
888-367-7966 (from inside U.S.A. only – toll
free)
408-428-7907
U.K. Call Center:
+44.7000.111666 (Technical Assistance)
+44.7000.111888 (Sales)
Fax: 408-428-7998
E-mail: ctac@symmetricom.com
Internet: http://www.symmetricom.com
Warning Symbols That May Be Used In This Book
Instruction manual symbol; the product will be marked with this
symbol when it is necessary for the user to refer to the
instruction manual.
Indicates hazardous voltages.
Indicates earth (ground) terminal.
or
Indicates terminal is connected to chassis when such connection
is not apparent.
Indicates Alternating current.
Indicates Direct current.
Contents
User’s Guide iii
In This Guide
Guide Organization v
Description of Symmetricom Fiber-Optic Distribution
Amplifier and Receiver vi
59552A Fiber-Optic Distribution Amplifier vi
59553A Fiber-Optic Receiver vii
1GettingStarted
Typical Timing Signal Distribution System 1-2
59552A Front Panel at a Glance 1-3
59552A Rear Panel at a Glance 1-4
59553A Front Panel at a Glance 1-5
59553A Rear Panel at a Glance 1-6
Preparing the 59552A/59553A for Use 1-7
To Connect AC Power 1-7
To Assemble and Connect the +129 Vdc IEC 320 Connector/
Cable 1-8
2 Configuring Your 59552A/59553A
Chapter Contents 2-2
Introduction 2-3
Removing the Covers 2-5
Tools Required 2-5
To Remove 59552A Cover 2-5
To Remove 59553A Cover 2-6
Configuring for One-Signal Distribution
(Digital Mode Operation) 2-9
Overview of the Digital Mode 2-9
To Configure the 59552A and 59553A for Digital Mode
Operation 2-11
Configuring the 59552A for Digital Mode 2-11
Configuring the 59553A for Digital Mode 2-13
Configuring for Two-Signal Distribution
(Combined Mode Operation) 2-16
Overview of Combined Mode 2-16
To Configure the 59552A and 59553A for Combined Mode
Operation 2-18
Configuring the 59552A for Combined Mode
Operation 2-18
Contents
iv User’s Guide
Configuring the 59553A for Combined Mode
Operation 2-20
3 Operational Verification
Chapter Contents 3-2
Introduction 3-3
Equipment Required 3-3
59552A/59553A Operational Verification 3-4
Setup 3-4
Digital Out (1 PPS) and Analog (IRIG) Out Waveform
Tests 3-5
LED Indicator Test 3-6
4 Specifications
Introduction 4-2
Index
User’s Guide v
In This Guide
This preface contains the following information:
Guide Organization
Table of Contents lists the beginning of each chapter in the guide,
helping you locate information.
In This Guide (this preface) introduces you to the User’s guide,
provides product descriptions, and general information on the
59552A Fiber-Optic Distribution Amplifier and the 59553A Fiber-Optic
Receiver.
Chapter 1, “Getting Started,” introduces you to the 59552A/59553A
with illustrated overviews of a typical distribution system, and the
59552A/59553A’s front and rear panels. A section on power cabling
requirements is also provided.
Chapter 2, “Configuring Your 59552A/59553A,” provides
configuration procedures with overview information for the
59552A/59553A.
Chapter 3, “Operational Verification,” provides an abbreviated
series of checks that may be performed to give an high degree of
confidence that the 59552A and 59553A are operating properly.
Chapter 4, “Specifications,” lists the 59552A and 59553A
specifications and characteristics.
Index
• Guide Organization page v
• Description of Symmetricom Fiber-Optic Distribution
Amplifier and Receiver
page vi
In This Guide
vi User’s Guide
Description of Symmetricom Fiber-Optic
Distribution Amplifier and Receiver
High-integrity distribution of a common clock is the backbone for
power-utility substation synchronization. The 59552A Fiber-Optic
Distribution Amplifier and the 59553A Fiber-Optic Receiver provide a
simple, modular approach to signal routing. Immunity to electrical
noise makes fiber-optic cable a superior choice for the challenging
environment of the power substation.
59552A Fiber-Optic Distribution Amplifier
The 59552A Fiber-Optic Distribution Amplifier, used with the 59553A
Fiber-Optic Receivers, provides clean, timing-quality transmission of
precise frequency and time signals, or distribution of timing signals for
various applications (such as the analysis, monitoring, and control of
power-utility substations). In a typical application requiring
distribution of one pulse per second (1 PPS) and IRIG-B time code, the
59552A provides an identical, synchronous clock signal and precise
time of day to every distribution point.
The 59552A Fiber-Optic Distribution Amplifier receives a digital (TTL)
signal and an analog signal via two BNC connectors. The distribution
amplifier combines the signals, and transmits the result on each of the
eight fiber-optic outputs. Signal integrity is maintained over fiber-optic
cable lengths of up to 1 kilometer (3,281 feet). One 59553A receiver is
required for each of the outputs that are used.
The 59552A front-panel LEDs provide quick status indication.
The 59552A is completely compatible with the 59551A GPS
Measurements Synchronization Module, which provides high-quality
timing signals (both 1 PPS and IRIG-B) as standard rear-panel
outputs.
In This Guide
User’s Guide vii
59553A Fiber-Optic Receiver
The 59553A Fiber-Optic Receiver is located at remote equipment
installations to receive a distributed signal from a common clock.
The 59553A receives the signal on fiber-optic cable, separates the
analog and digital waveforms, reconstructs the analog time code,
and outputs each signal to a BNC connector.
The 59553A, used with the 59552A Fiber-Optic Distribution Amplifier,
provides clean, timing-quality transmission to analyze monitoring and
control equipment in power-utility substations, or any application
involving precise frequency and time signals. In a typical application
requiring distribution of one pulse per second (1 PPS) and IRIG-B time
code, the 59953A ensures an identical, synchronous clock signal and
precise time of day at each distribution point.
The 59553A front-panel LEDs provide quick status indication.
In This Guide
viii User’s Guide
1
Getting Started
Chapter 1 Getting Started
Typical Timing Signal Distribution System
1-2 User’s Guide
Typical Timing Signal Distribution System
The following block diagram illustrates how the 59552A distribution
amplifier and the 59553A receiver can be connected for a typical
application requiring distribution of one pulse per second (1 PPS) and
IRIG-B time code. The 59553A ensures an identical, synchronous clock
signal and precise time of day at each distribution point. In addition to
connecting the 59552A and 59553A as shown in the block diagram, you
may need to configure both the 59552A and 59553A by positioning
internal jumpers (refer to Chapter 2, “Configuring Your
59552A/59553A”). You will also need to connect power to each unit
(refer to the section titled “Preparing the 59552A/59553A for Use” in
this chapter).
To
System
Digital Out (1PPS)
59552A
Fiber-Optic
Distribution
Amplifier
59553A
Fiber-Optic
Receivers
(Eight)
Analog Out (IRIG)
IRIG Input
1PPS Input
ch1
ch2
ch3
ch4
ch5
ch6
ch7
ch8
Combined Signal
Fiber-Optic
Cables
Coaxial
Cables
Coaxial
Cables
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