Cisco Systems 1500 Airflow System, Power Supply Module

Chapter1 Product Overview

Chassis

1-14

Cisco Metro 1500 Series Hardware Installation Guide

78-10588-03

Airflow System

The airflow system includes an air intake at the bottom front side of the chassis

and a fan module with two fans at the rear of the chassis. Two redundant power

supplies power the fan module. The chassis internal air temperature controls the

rotational speed of the fans.

The state of the fan module can either be observed through the NEMI-master or

it can be read off the fan LEDs at the front side of the chassis. A green light

indicates that everything is in working order.A red light signals that either a fan

or a fan power supply is not working properly, which does not necessarily

endanger the functioning of the air flowsystem because there are backup fans and

fan powersupplies. Refer to the Cisco Metro 1500 Series Software Configuration

Guide for more information about fan observation using the NEMI-master. The

ocmstate-f provides information on the fans.

Youcan check the fan module status on the display panel at the front of the chassis

and through the NEMI. For more information about using the NEMI to check the

fan status, refer to the Cisco Metro 1500 Series Software Configuration Guide.

Caution The fan system can only be replaced by Cisco-trained and -certified

technicians.

Power Supply Module

The Cisco Metro 1500 series system provides high reliability in data and

telecommunication applications because it has two identical, fully redundant

power supplies. Each power supply can take over the power needs of the entire

system. These power supplies provide 5V at 30A to the system, and full

input-to-output, input-to-case, and output-to-output isolation. For detailed

information on the power supply and how to replace it, see the “Determining

Power Supply Status” section on page 3-23.

The state of the PSMs can either be observed through the NEMI-Master or it can

be read off the LEDs at the front side of the frame. If both PSMs are working the

green or red power LED is lit, otherwise there is no light at all.

Contents

Main CHAPTER Product Overview Product Description Communication Channels Figure 1-1 shows the multiplexer architecture. Figure 1-1 Multiplexer Architecture Primary and Extension Chassis Cisco Metro 1500 Series Hardware Installation Guide 78-10588-03 Chapter1 Product Overview Communication Channels Figure 1-2 Typical Cisco Metro1500 Series Conguration Ethernet cables Ethernet hub DC Input Uplink 6x 5x 4x 3x 2x 1x External bus cable Expansion Modules Power 1 Power 2 WCM RSM Figure 1-3 Primary Chassis NEMI DMX Figure 1-4 Extension Chassis A Figure 1-5 Extension Chassis B WCM BSM DMX Power 1 Power 2 Figure 1-7 shows the rear view of the primary chassis and extension chassis. 78-10588-03 Figure 1-6 Extension Chassis C WCM MUX DMX Power 1 Power 2 Page 16-Channel WCM System 32-Channel WCM System 128-Channel ESCON System Chassis Dimensions Labeling Page Airflow System Power Supply Module System Modules Wavelength Channel Modules Data Rate Transparent WCMs Data Rate Transparent Front Panel LEDs WCMs with Fixed Clock Recovery Clock Recovery Front Panel LEDs WCMs with Settable Clock Recovery Optical Connectors of the WCM Multiplexer and Demultiplexer Modules Chapter1 Product Overview System Modules Figure 1-10 MUX and DMX Locations Optical Connectors of the MUX and DMX Each MUX and DMX has up to 10 optical connectors: One input or output connector for each of up to eight WCMs installed in a chassis. One common input (D1 to D4 WCM chassis location), depending on the Band Splitter Module Optical Connectors of the BSM Remote Switch Module Page Figure 1-13 RSM Optical Connectors RSM Push Buttons and LEDs Three push buttons control the RSM. Table1-5 lists each push button and its function. Table1-5 RSM Push Button Descriptions Optical Connectors of the RSM Modes of Operation TDM4E Wavelength Channel Modules Page Page System Modules Figure 1-15 TDM4E Multiplexer Architecture RSM DMX TDM4E1 TDM4E2 Optical Connectors of the TDM4E On the front panel of the TDM4E there are 10 MiniSC type optical connectors: Figure 1-16 shows the optical connectors on the front panel of the TDM4E. Figure 1-16 Optical Connectors of the TDM4E TDM4E LEDs Page Network Element Management Interface Chapter1 Product Overview System Modules NEMI Location Placement POWER FAN Ch.1-8 32262 Figure 1-17 NEMI Location in the Primary Chassis and Extension Chassis B Figure 1-18 NEMI Front Panel NEMI LEDs Device Element Management Interface System Modules METRO 1500 POWER FAN DEMI Location Placement The physical location of the DEMI module is shown in Figure 1-19. Figure 1-19 DEMI Placement in an Extension Chassis DEMI Ports MUX Ch.9-16 DMX DEMI LEDs Ethernet Hub