Spectracom NetClock 9400 Series, Руководство пользователя

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1.1 Getting Started
Welcome to the NetClock User Reference Guide.
Where to start:
First-time users : "Introduction" below.
Users with some knowledge of Time and Frequency Servers: "Overview" on page 28.
If your unit is up and running and you want to change a setting : "MANAGING TIME"
on page 145, or "SYSTEM ADMINISTRATION" on page 223.
1.2 Introduction
The NetClock
®
9400 Series combines Spectracom’s precision Time Server/Master Clock tech
nology and secure network- centric approach with a compact modular hardware design to
bring you a powerful time & frequency reference and synchronization system at the lowest cost
of ownership.
The NetClock 9400 product series is ideally suited for a variety of communications applic
ations such as Emergency Communications Centers that require extremely accurate timing and
frequency synchronization for their mission-critical systems, networks, and devices. The NetC
lock 9400 product series consists of two variants: The model 9483 is fully compliant with the
National Emergency Number Association (NENA) master clock standard, and the model 9489.
1.3 NetClock 9483 Overview
The NetClock 9483 has been designed specifically for these environments, and when using
GPS as its timing reference, the UTC (Coordinated Universal Time) time standard is employed,
thus allowing the NetClock 9483 to provide legally traceable time and frequency syn
chronization services for various related environments and equipment, such as the following:
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NetClock User Reference Guide Rev. 16
1.1 Getting Started