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Cisco ONS 15600 SDH Reference Manual, Release 9.0
78-18400-01
Chapter 1 Shelf and Backplane Hardware
1.7 Alarm, Timing, LAN, and Craft Pin Connections
1.7 Alarm, Timing, LAN, and Craft Pin Connections
Caution
Always use the supplied ESD wristband when working with a powered ONS 15600 SDH or any
ONS 15600 SDH components. Plug the wristband cable into one of the ESD jacks located on the
lower-left outside edge of the bay assembly and at the bottom rear of the shelf.
The ONS 15600 SDH has a backplane pin field located at the bottom rear of the shelf that is part of the
CAP. The CAP provides 0.045 square inch (0.290 square centimeter) wire-wrap pins for enabling alarm
inputs and outputs and timing input and output. This section describes the backplane pin field and pin
assignments, as well as timing and LAN connections. See the
“1.6 Customer Access Panel” section on
for more information.
1.7.1 External Alarm and Control Contact Installation
The external (environmental) alarm contacts consist of the wire-wrap pin field and two D-Sub 15s. The
alarm pin field supports up to 16 alarm inputs (external alarms) and 16 alarm outputs (external controls).
The two D-Sub 15s support four audible alarms, four visual alarms, one alarm cutoff (ACO), a PDU Fail
A, and a PDU Fail B.
By connecting to different wire-wrap pins on the CAP or CAP2, the alarm outputs can be configured for
either normally open (NO) or normally closed (NC) operation (see
). The alarm inputs consist
of two wire-wrap pins on the CAP or CAP2 and the alarm outputs consist of three wire-wrap pins.
1.7.1.1 Visual and Audible Alarms
Visual and audible alarm contacts are provisioned as Critical, Major, Minor, and Remote.
shows alarm pin assignments.
