Cisco ONS 15600 Manuale utente

CHAPTER

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Cisco ONS 15600 Reference Manual, R8.0

Shelf and Backplane Hardware

This chapter provides a description of Cisco ONS 15600 shelf and backplane hardware. Card and cable

descriptions are provided in Chapter 2, “Card Reference.”

To install equipment, refer to the Cisco ONS 15600 Procedure Guide.

Chapter topics include:

•1.1 Installation Overview, page 1-1

•1.2 Bay Installation, page 1-2

•1.3 Front Door, page 1-4

•1.4 Rear Covers, page 1-5

•1.5 Cable Routing, page 1-7

•1.6 Customer Access Panel, page 1-7

•1.7 Alarm, Timing, LAN, and Craft Pin Connections, page 1-10

•1.8 Power Distribution Unit, page 1-13

•1.9 Power and Ground Description, page 1-13

•1.10 Fan-Tray Assembly, page 1-14

•1.11 Cards and Slots, page 1-17

Note The Cisco ONS 15600 assembly is intended for use with telecommunications equipment only.

Note The ONS 15600 is designed to comply with Telcordia GR-1089-CORE Type 2 and Type 4 equipment.

Install and operate the ONS 15600 only in environments that do not expose wiring or cabling to the

outside plant. Acceptable applications include Central Office Environments (COEs), Electronic

Equipment Enclosures (EEEs), Controlled Environment Vaults (CEVs), huts, and Customer Premise

Environments (CPEs).

1.1 Installation Overview

The ONS 15600 is a Network Equipment Building System III (NEBS III)-compliant, environmentally

hardened shelf assembly that ships as a single shelf in a bay assembly for Release 8.0. The ONS 15600

comes with the power distribution unit (PDU), shelf, fans, and backplane already installed. The front

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Cisco ONS 15600 Reference Manual, R8.0

Chapter 1 Shelf and Backplane Hardware

1.2 Bay Installation

door of the ONS 15600 allows access to the shelf assembly, fan-tray assembly, and cable-management

area. The customer access panel (CAP) or customer access panel version 2 (CAP2) on the back of the

shelf provide access to alarm contacts, external interface contacts, and timing contacts. Power and

ground terminals are located on the top left and right sides of the bay.

Caution Voltage to the alarm circuits should not exceed –48 VDC.

The ONS 15600 comes mounted in a custom, certified NEBS-2000 rack. The bay assembly, including

the rack, fan trays, and PDU weighs approximately 500 pounds (226.8 kg) with no cards installed.

ONS 15600 OC-N cards have OGI connectors on the card faceplate; available connector termination

types are SC, ST, and FC. Fiber optic cables are routed to the front of the OC-N cards.

The ONS 15600 is powered using –48 VDC power but may range from –40.5 to –72 VDC. Input power

is accessible from the sides of the bay, and output power is accessible at the rear of the bay. Cisco

supports dual office-power feeds only.

Install the ONS 15600 in compliance with your local and national electrical codes:

•United States: National Fire Protection Association (NFPA) 70; United States National Electrical

Code

•Canada: Canadian Electrical Code, Part I, CSA C22.1

•Other countries: If local and national electrical codes are not available, refer to IEC 364, Part 1

through Part 7.

1.2 Bay Installation

In this chapter, the terms “ONS 15600” and “bay assembly” are used interchangeably. In the installation

context, these terms have the same meaning. Otherwise, bay assembly refers to the physical steel

enclosure that holds the shelves and power distribution unit (PDU), and ONS 15600 refers to the entire

system, both hardware and software.

To install the ONS 15600, you must first unpack the bay assembly. Two custom ramps and two dollies

are available to assist you with the removal of the bay from the shipping pallet and transportation to the

installation location. Figure 1-1 shows the bay assembly with the dollies installed.

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Cisco ONS 15600 Reference Manual, R8.0

Chapter 1 Shelf and Backplane Hardware

1.2 Bay Installation

Figure 1-1 ONS 15600 with Dollies Installed

The ONS 15600 shelf measures 25 inches high, 19-9/16 inches wide, and 23 inches deep (63.5 cm H x

49.7 cm W x58.3 cm D). A maximum of three ONS 15600s can fit in a custom seven-foot equipment

rack. The ONS 15600 that ships within a rack is 83-7/8 inches high, 23-5/8 inches wide, and

23-5/8 inches deep (213 cm H x 60 cm W x 60 cm D).

Note Cisco supports only one ONS 15600 shelf per bay.

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Chapter 1 Shelf and Backplane Hardware

1.3 Front Door

The ONS 15600 features a door to the front compartment that you can open by releasing the latches on

the bottom left and right sides of the door. The front door provides access to the shelf, cable-management

tray, and fans (Figure 1-2).

Figure 1-2 ONS 15600 Front Door

You can remove the front door of the ONS 15600 to provide unrestricted access to the front of the shelf.

A label is pasted in a box in the center of the swing-down door that covers the fiber routers (Figure 1-3).

This label designates the position of the rack and shelf in a lineup.

78395

ESD jack

Door pivot point

Door latches

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Cisco ONS 15600 Reference Manual, R8.0

Chapter 1 Shelf and Backplane Hardware

1.4 Rear Covers

Figure 1-3 Bay Label

The front door also has a Class I laser warning (Figure 1-4).

Figure 1-4 Laser Warning Label

1.4 Rear Covers

The ONS 15600 has an optional plastic rear cover that is held in place with six 6-32 x 3/8 inch Phillips

screws. This plastic cover provides additional protection for the cables and connectors on the backplane

(Figure 1-5).

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Cisco ONS 15600 Reference Manual, R8.0

Chapter 1 Shelf and Backplane Hardware

1.4 Rear Covers

Figure 1-5 Plastic Rear Cover

Figure 1-6 shows the bus bar covers.

Figure 1-6 PDU Bus Bar Cover

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Cisco ONS 15600 Reference Manual, R8.0

Chapter 1 Shelf and Backplane Hardware

1.5 Cable Routing

The narrow and wide cable routing modules (CRMs) can be installed on the sides of the bay to manage

and contain the optical cables as they are routed away from the bay. You can use both types of fiber

routing systems with overhead or under-floor cabling.

1.6 Customer Access Panel

The Customer Access Panel (CAP or CAP2) is located in the middle on the rear of the shelf. The CAP

and CAP2 provide an alarm pin field, timing, and LAN connections. The CAP or CAP2 plugs into the

backplane using 2mm Hard Metric connectors with 752 pins and is held in place with one large captive

bolt and multiple screws.

The CAP2 has the additional capability of providing provisionable power monitoring.

Figure 1-7 shows the location of the CAP or CAP2 on the back of the shelf.

Note The ONS 15600 supports only T1 (100 ohm) building integrated timing supply (BITS).

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Cisco ONS 15600 Reference Manual, R8.0

Chapter 1 Shelf and Backplane Hardware

1.6 Customer Access Panel

Figure 1-7 Rear of the ONS 15600, Including the CAP/CAP2

The ONS 15600 CAP and CAP2 provide the following features:

•BITS T1 (100 ohm) interfaces via wire-wrap pins.

•Two Ethernet interfaces via RJ-45 connectors with internal transformer isolation.

•An EIA/TIA-232 craft interface via DB-9 connectors. This interface is surge-protected and provides

EMI filtering. Two interfaces are provided for redundancy.

•Four audio alarm interfaces via a DB-15 connector that is surge-protected and EMI-filtered. The

audio alarm indication is provided by the Timing and Shelf Controller (TSC) card and this interface

can receive a signal to disable the audio alarm.

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Cisco ONS 15600 Reference Manual, R8.0

Chapter 1 Shelf and Backplane Hardware

1.6 Customer Access Panel

•Four visual alarm interfaces via a DB-15 connector that is surge-protected and EMI-filtered. The

visual alarm indication is provided by the TSC card and the signal is connected to the PDU where

LEDs indicate the alarm status and severity.

•Environmental (external) alarms and controls (16 inputs and 16 outputs) via wire-wrap pins. The

interface is surge-protected and provides isolation by using an opto-isolator for alarm inputs and

relays for alarm outputs. By connecting to different wire-wrap pins on the CAP/CAP2, the alarm

outputs can be configured for either normally open (NO) or normally closed (NC) operation. Alarms

are initiated by shorting these contacts. The alarm input interface provides a pair of positive and

negative wire-wrap pins.

The isolation and termination meet the intra-building lightning surge specification in Telcordia

GR-1089. The CAP and CAP2 have –48 VDC monitoring with an I2C interface and nonvolatile memory

to store the CAP/CAP2 revision information.

Figure 1-8 shows the CAP faceplate.

Figure 1-8 CAP Faceplate and Connections

If the CAP/CAP2 fails, the node raises an EQPT alarm. You can replace the CAP/CAP2 on an in-service

node without affecting traffic. To replace a CAP, refer to the Cisco ONS 15600 Procedure Guide. Always

replace the CAP during a maintenance window.

78485

Wire

wrap

pins

LAN

RJ-45

Craft

DB-9

Audible

Alarm

DB-15

BITS

OUT

BNC

BITS

OUT

BNC

LAN

RJ-45

Craft

DB-9

BITS

BNC

BITS

BNC

Serial Number Label

Part Number Label

Bar Code and

Country of Origin

Labels

Backplane

connectors

Visual

Alarm

DB-15

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Cisco ONS 15600 Reference Manual, R8.0

Chapter 1 Shelf and Backplane Hardware

1.7 Alarm, Timing, LAN, and Craft Pin Connections

Caution Always use the supplied ESD wristband when working with a powered ONS 15600 or any ONS 15600

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 has a backplane pin field located at the bottom rear of the shelf that is part of the

CAP/CAP2. The CAP/CAP2 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 page 1-7 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 Figure 1-9). 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. Figure 1-9

shows alarm pin assignments.

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