Adva 3000R7 - Page 89

FTM-3
l Environmental Specifications
l MTBF Hours for HDEquipment
l Cooling and Airflow
l Slot Numbers and Assignments
l SH12 Shelf
Features
l Is field replaceable
l Is controlled by the CEM-2
l Speed increases if any of the FTM-2s fails or are removed or if the CEM-2 fails or is
removed
l Software-managed synchronization of the FTM-2 rotation speed to reduce noise
l Secures to the shelf with a retaining screw
l Provides a module status LED
l Cooling and Airflow
l CEM-2
l SH12 Shelf
FTM-3
Overview 89
Features 91
Overview
The SH1R has three fan modules (FTM-3s) installed at the back of the shelf. These
modules provide the necessary cooling to keep modules within acceptable operating
temperatures. The FTM-3s extract air through the shelf to cool the modules and exhaust
the hot air out at the shelf rear.
89 FSP 3000R7 High-Density Subshelf Guide - R17.2 - Issue:B