12713020-002-2 Revision D – April 2004 SSU-2000 User’s Guide 225
Hardware Configuration Guide
Configuring a Monitor-Only System
Figure 9-2. SSU-2000 Configured as PRS System
The SSU-2000 PRS configuration consists of the following:
SSU-2000 main chassis
Communications Module
One or two GPS Input Modules
One Clock Module (2E or 3E)
One or more E1 and/or DS1 Output Modules
One Input Adapter Panel and I/O cable
One Output Adapter Panel and SCSI Output cable
Seven 1.0-inch wide filler panels and one 3-1/2” wide filler panel
Configuring a Monitor-Only System
In a monitor-only configuration, no output signals are required. One of the inputs is
designated as the reference, and the SSU-2000 Clock module is locked directly to
this signal. All remaining input signals are then compared to the phase-locked
oscillators (and indirectly to the designated input reference). The SSU-2000 can
support up to 27 inputs in this type of configuration. Figure 9-3 shows a monitor only
configuration.
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