Alpha Technologies FlexNet ELPM 300-48D - Manual (Page 13)

13 010-322-C0-003, Rev C
1.0 Installation, continued
1.4 Output Connector
The output connection is located on the front panel of the unit. Plug the 48VDC fiber node
into this connector.
1.5 Status Monitoring Connector
The Status Monitoring connector is located on the front panel of the unit. Associating with
this connector, an opto-coupler transistor array is connected between the output alarm pins
(Batt Low, Batt Miss, Repl Batt and AC Fail) and the ground pin (Tel Comm) as shown. In
the normal state, all the transistors are turned off and all the alarm pins are separated to
the ground. When an alarm is present, the micro controller will turn on the corresponding
transistor to short the alarm pin to the ground.