User Manual

November 1999
M68333 Rev. A Tel-Link PMP - Sector Terminal Installation & Maintenance Manual 2-7
2.2 Sector ODU Power Supply
The Sector ODU Power Supply is a rack mounted unit supplying DC power to the ODUs and designed to
avoid single points of failure and ease of replacement of failed components. This unit is redundant utilizing
two power supplies within the chassis that load share and is fan cooled (refer to Figure 2-6, Figure 2-7 and
Figure 2-8). A single Power Supply Unit is capable of powering two standard Sector ODU’s, thus allowing
replacement of an ODU Power Supply Module without causing service interruption. The two Power Supply
Modules are load sharing. When Power Supply Module B is removed, +48 VDC will still be present on the
output connector labeled ODU B. When the optional higher power (2W) output ODU is selected, a second
ODU Power Supply is required.
Figure 2-6 - Sector ODU Power Supply (Front View)
Figure 2-7 - Sector ODU Power Supply AC (Rear View)
Active LED Indicators
Chassis Ground Stud
Cooling Fan
Primary AC Power
Supply Input Port
Secondary AC Power
Supply Input Port
Secondary DC Power
Supply Output Port
Primary DC Power
Supply Output Port
Cooling Fan