BATT
RTN
ALARM
MONITOR
ALARM
MONITOR
RTN
BATT
Figure 3. Block Diagram of GMT-KLM Bus
– Initially, if there is no input power to the A or B bus, or if there is no fuse placed in the
KLM fuse holder, the LED will be unlit (no green or red light).
– The first time a KLM fuse is installed in the fuse holder, the LED will turn to green to
indicate that the position has power available for the output terminal for that fuse
position. It will remain green until there is a fuse failure or until a fuse is removed
from that fuse holder.
– At the time of a fuse failure, or if the fuse is removed, the LED will turn red and
activate an alarm. When the failed fuse is replaced, the new fuse will act as described
for the initial turn-up, turning green to indicate a power available condition. At the
same time, the new fuse will clear the alarm.
KLM
BATT
RTN
1
2
3
4
RED
KLM
GREEN
POWER A
GREEN
POWER B
RED
KLM
BATT
RTN
1
2
3
4
ADCP-80-575 • Issue 2 • December 2006
GMT
BATT
RTN
1
2
3
4
RED
GMT
NO C NC
AUDIO
VISUAL
REMOTE
ALARM
RED
GMT
BATT
RTN
1
2
3
4
20827-A
© 2006, ADC Telecommunications, Inc.
Page 7
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