ADC HiGain HMS-318 List 3 User Manual page 26

Chapter 1: Product Description
Note: Refer to the respective ADC card user manuals to determine the maximum number of cards that can
be installed in a shelf before exceeding the maximum heat dissipation density of the telco-style equipment
rack configuration.
Figure 1-11 shows a typical example of a CO equipment rack layout using HMS-318 List 3 shelves. The figure
shows a rack with a fuse panel, eight HMS-318 List 3 shelves, each separated by a two rack space baffle with the
remaining shelf space open. As the figure illustrates, baffles should be placed between each shelf to reduce the
chimney heating effect (see
List 3 shelf).
Outdoor cabinet applications require forced air to ensure proper cooling.
1-14
"Air Flow Guidelines" on page 1-15
Figure 1-11. Central Office Equipment Rack Configuration
for further information about cooling the HMS-318
Fuse Panel
Shelf
Baffle
Shelf
Baffle
Shelf
Baffle
Shelf
Baffle
Shelf
Baffle
Shelf
Baffle
Shelf
Baffle
Shelf
Baffle
December 20, 2004
LTPH-UM-1261-01