User`s guide

A-6 DL3100 User’s Guide—November 1998
A
Alarms
The alarms are on the DL3100 are:
¥ Common Alarm Indicator LEDs
¥ Common Visual Alarm Contact through a DE-9 connector
¥ Common Audible Alarm Contact through a DE-9 connector
¥ Common External Alarm Input through a DE-9 connector
Alarm Types
Table A-11 states the alarm types on the DL3100.
Equipment Grounding Conductor
The equipment grounding conductor should be installed as part of the
circuit supplying the system and should not be smaller in size than the
ungrounded branch-circuit supply conductors.
A bare, covered, or insulated grounding conductor is acceptable. An
individually covered or insulated conductor should have a green (or a
green with one or more yellow stripes) continuous outer Þnish.
The attachment-plug receptacle in the vicinity of the system should be of a
grounding type and the grounding conductor serving the receptacle should
be connected to earth ground at the service equipment.
Table A-11 Alarm Types
Carrier Alarm Type
T3 Network Port NET Carrier Loss Alarm
NET Sync Loss Alarm
NET AIS Received Alarm
NET Yellow Received Alarm
CRC, BPV, OOF Threshold
Alarm
Data Port RTS Loss Alarm
DTR Loss Alarm