Harris Constellation - Customer Access Areas; External Alarm;Control Connector; Figure A-7: Constellation Backplane (Top Left; Table A-1: Relay Specifications

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Harris Corporation Constellation™

Customer Access Areas A-5

WIRING

SPECIFICATIONS

Customer Access Areas

External Alarm/Control Connector

Located at the top left side of the radio, this 50-pin D connector (Figure A-8) is

available for customer-configured alarms. The SPU Controller provides 8 opto-

isolated alarm inputs. The system provides 8 dry-contact, relay outputs as

defined in Table A-2. The Service Channel provides the Callout outputs. Table

A-1 lists the relay specifications.

Figure A-7: Constellation backplane (top left)

Table A-1: Relay specifications

Characteristic Value

Nominal switching capacity (resistive) 2 A, 60 Vdc

Max. switching power (resistive) 60 W

Max. switching voltage 220 Vdc

Max. switching current 2 A

Min. switching capability 10

µA, 10 mV dc

BAT A

BAT B

RET

24/48VDC

HARRIS Constellation Backplane

TO FUSE PANEL

ALARM I/O

Filter

External

alarm/control

connector

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