Chapter 7 Connector Pinouts
Signal Names and Definitions
340 SSU-2000 Technical Reference 12713020-003-2 Revision F.01 – January 2007
SDU-2000 Expansion Interface
Figure 7-6 illustrates the SDU Interface and the Backup Clock Connector, located
on the rear panel of the SSU-2000. Table 7-5 outlines signal names, definitions, and
locations of the SDU Expansion interface and backup clock connectors.
Table 7-4. Signal Names and Locations of Alarms
Name Description Connector–Pin
LCRT-NO Local Critical Alarm, Normally Open Contact TB1-1
LCRT-COM Local Critical Alarm, Common Contact TB1-2
LCRT-NC Local Critical Alarm, Normally Closed Contact TB1-3
LMAJ-NO Local Major Alarm, Normally Open Contact TB1-4
LMAJ-COM Local Major Alarm, Common Contact TB1-5
LMAJ-NC Local Major Alarm, Normally Closed Contact TB1-6
LMIN-NO Local Minor Alarm, Normally Open Contact TB1-7
LMIN-COM Local Minor Alarm, Common Contact TB1-8
LMIN-NC Local Minor Alarm, Normally Closed Contact TB1-9
RCRT-NO Remote Critical Alarm, Normally Open Contact TB2-1
RCRT-COM Remote Critical Alarm, Common Contact TB2-2
RCRT-NC Remote Critical Alarm, Normally Closed Contact TB2-3
RMAJ-NO Remote Major Alarm, Normally Open Contact TB2-4
RMAJ-COM Remote Major Alarm, Common Contact TB2-5
RMAJ-NC Remote Major Alarm, Normally Closed Contact TB2-6
RMIN-NO Remote Minor Alarm, Normally Open Contact TB2-7
RMIN-COM Remote Minor Alarm, Common Contact TB2-8
RMIN-NC Remote Minor Alarm, Normally Open Contact TB2-9
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