Distribution & Alarm Board - Andrew Node C837 User Manual

5.3.6 Distribution & Alarm Board
The distribution & alarm board of the Interface Unit is the main connection point for
the user. It has the external alarm clamps, RS232 connectors, for local or modem
connection, as well as a summary alarm relays. The following figures show one blank
board and an installed one with battery backup.
Internal PSTN connector
External alarms & PSTN *
Modem cable (RF connection)
USB connector for modem*
Power supply alarming / I
* Only these connectors are for general customer use. All others are designated above for
informative purposes, and required, only, e.g. for an upgrade or replacement of parts.
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User's Manual for Node C Network Elements
2
Internal I C
Vdc for modem *
Remote (RS232)*
Door switch
2
C
figure 5-15 Distribution & alarm board
PRELIMINARY
Battery backup connector
Mains surveillance
Battery load discharge (resistor)
Modem fuses (2.5 A)
Local (RS232) *
Battery charge module
Summary alarm*; see chapter
5.2.7 for pin assignment
M0121A1A_uc.doc