Connectors Pin Assignment
XDM-300 Installation and
Maintenance Manual
A-2 ECI
Telecom
Ltd.
Proprietary
417006-2311-0H3-A00
ECU300/ECU300-F Card
Connectors
ALARMS Connector
The ALARMS connector is a 36-pin SCSI female connector that carries three
groups of lines:
|
Five external alarm input lines referenced to an internal power supply
common line (the power supply’s common line is floating relative to the
chassis ground). The alarm input lines are monitored by the XDM-300
management subsystem. Each input is connected to the input diode of an
optocoupler.
|
Three external alarm outputs/inputs. Each output is provided by three relay
dry contacts. These lines can be configured as additional alarm inputs by
the system’s management.
|
Four severity alarm outputs and a buzzer control line. Each output is
provided by three relay dry contacts. The buzzer control line is provided by
two dry contacts.
Relay contact ratings are 75 V in open state and 1A in closed state.
The following figure identifies the connector pins as seen when looking into
the connector. The table lists the pin assignment for the ALARMS connector.
Pin 18
Pin 36
Pin 1
Pin 19
Figure
A-1: ALARMS connector pin identification
The ALARMS connector can be connected in several configurations to the
customer’s alarm collecting facility. It can be connected directly to the
customer’s distribution frame or via xRAP or xRAP-100 rack alarm panels to
the customer’s facility. ECI Telecom’s Transport Networking Division offers
appropriate cables for each of the configurations. These cables are described in
the sections that follow.
Summary of Contents for XDM-300
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