Lucent Technologies FiberReach DDM-2000 - Circuit Pack Power and LED Control

363-206-305
Power
Issue 3 June 2000
4-13
Figure 4-9. Circuit Pack Power and LED Control
Power Minor Alarm
4
A yellow power minor (PMN) alarm LED is provided on the user panel to indicate
an AC power failure at the remote terminal. The power minor alarm can be
provisioned at the central office (CO) to be either an office minor (MN) or office
major (MJ) alarm.
-48 V (A)
RTN
&
+5 V
Relay
Converter
GND
DC/DC
-48 V-48 V
-48 V (B)
(Red)
&
Fault LED
LED Control
Filtering
Fuse
Limiter
Current
ORing
Diode
RTNRTN