Cisco Cisco Prisma II EDR Receiver Installationsanleitung
78-748705-01 Rev C
Installation
2-21
Interface Panel Features
Introduction
This section describes the various features of the Prisma II Redundancy Interface
Panel.
Chassis Slot Numbers
The Prisma II Chassis has sixteen slots. Each chassis slot has two alarm outputs and
two alarm inputs. Slot numbers and the corresponding outputs and inputs are
represented and labeled just below the terminal strips on the front of the Prisma II
Redundancy Interface Panel.
Note: Slot 1 of the chassis is always reserved for the power supply and has no
terminals on the panel. Slot 3 is represented on the interface panel, but is reserved
for the fan tray. Therefore, the interface panel’s slot 3 spring terminals can only be
used as alarm outputs or inputs for the fan tray.
Terminals Strips
The front of the interface panel has four terminal strips that house spring terminals
for each slot. The two left-side strips house two ALARM OUT terminals for each of
the chassis slots 2 through 16, and the two right-side strips house two ALARM IN
terminals for each of the chassis slots 2 through 16.
Spring Terminals
The spring terminals are the points where the actual hard-wire connections between
modules are made. Each spring terminal on the interface panel is an extension of a
pin on the ALARMS OUT and ALARMS IN connectors on the chassis. Pressing the
bottom lever of the spring terminal allows insertion of a jumper wire into the hole of
the terminal. Releasing the lever secures the wire to the terminal.
Alarm Terminal Designations
The ALARM OUT and ALARM IN terminal strips, chassis slot numbers, and
A/B spring terminals are labeled just below the terminal strips on the front of the
interface panel.