2.1.4.5
Power Supply Module Backplane Connections
This table provides descriptions and functions of the power supply backplane connections.
Table 31: Power Supply Module Backplane Connections
Port/Type
Description
AC
Input only
Battery / DC
Power and
Control Sig-
nal
48 VDC:
• Provides the DC input to the power supply when operating from a DC source.
• Connects the charger output to the standby battery when operating from an AC
input with a standby DC battery.
29 VDC:
• Provides the Main and Auxiliary DC outputs of the power supply for use by the
power amplifier, transceiver, and site controller.
Other signals this connector handles include control interface and battery tempera-
ture interface.
Figure 15: Power Supply Connections (Rear)
2.2
Backplanes and Card Cages
Card cages are created with a welded and riveted design. Each card cage has a backplane.
• See
GTR 8000 Base Radio Rear Connections (Integrated Voice and Data) on page 105
8000 Base Radio Rear Connections (HPD) on page 108
.
MN003286A01-E
Chapter 2: GTR 8000 Base Radio Theory of Operation
70