12713020-002-2 Revision D – April 2004 SSU-2000 User’s Guide 71
Installing the SSU-2000
Making Alarm Connections
Local Oscillator Outputs
The SSU-2000 has two Local Oscillator (LO) connections on the rear panel. These
connections are made using the BNC connector J1 labeled LOCAL OSC-A and the
BNC connector J2 labeled LOCAL OSC-B. The bodies of these BNCs are
connected to frame ground.
Making Alarm Connections
The SSU-2000 has two alarm terminal blocks located on the rear panel for attaching
external circuits to the SSU-2000, and are shown in Figure 2-7. Both blocks are
nine-position, #6 filtered terminal blocks. The local connections are made on TB1
and the remote connections are made on TB2. The terminal blocks are labeled
Alarm Closures, Local and Remote. The connections are labeled NO (normally
open), COM (common or wiper) and NC (normally closed) for each of the alarm
categories CRITICAL, MAJOR and MINOR.
Figure 2-7. Alarm Terminal Blocks
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