Configuring A Conventional Ssu/Tsg System - Symmetricom SSU-2000e User Manual

Chapter 9 Hardware Configuration Guide

Configuring a Conventional SSU/TSG System

Configuring a Conventional SSU/TSG System
The SSU/TSG configuration allows for input of external references to which the
Clock modules are phase locked. This configuration allows for monitoring of several
inputs and for synchronization of output signals.
configuration.
Figure 9-1. Timing Sync Generator (TSG) System Configuration
The TSG configuration consists of the following:
SSU-2000e main chassis
Communications module
Up to three E1/DS1 Input modules
One or two Clock module(s) (2E/3E)
Up to three E1 and/or DS1 Output module pairs
Corresponding number of Output I/O adapter panels and SCSI output cables
1.0-inch wide filler panels and a 3-1/2" wide filler panel as necessary
Configuring a Primary Reference Source (PRS) System
In a Primary Reference Source (PRS) configuration, the SSU-2000e meets the
specifications defined in American National Standards Institute (ANSI)
T1.101-1994. ANSI defines a Primary Reference Source as "equipment that
provides a timing signal whose long-term accuracy is maintained at 1 x 10E
better, with verification to Universal Coordinated Time (UTC), and whose timing
signal is used as the basis of reference for the control of other clocks within a
network". If standard Input modules are installed in the remaining input slots, this
configuration also allows for monitoring of other external signals, such as DS1, E1,
composite clock, and various clock frequencies. Time-of-day functionality is
available via the Ethernet port employing NTP.
configuration.
226 SSU-2000e User's Guide
Figure 9-1 shows a TSG
Figure 9-2 shows a PRS
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