User Manual

1X UBS Macro B T S FRU UBS Macro B T S Product Ov erview
Modem boards
The modem board provides digital modulation/demodulation of the overhead channels and
traffic channels that are carried on the TX/RX RF carriers. The UBS Macro modem boards
are high density and have at least 256 channel elements that can be allocated to support the
desired quantity of overhead and traffic channels.
There are two types of UBS Macro modem boards available. These are as follows:
• 1X CDMA modem board
• EV -DO modem board
The modem boards are located inside the DMI. A DMI can be equipped with up to two modem
boards maximum. These modem boards can be either 1X CDMA modem, EV -DO modem, or
one of each.
UBS Macro BTS Frame Optional External Equipment
The RGPS (Remote GPS) head is optional external equipment for the UBS Macro BTS frame.
The following section briefly describes the RGPS head.
RGPS (Remote GPS) head
The optional RGPS head contains a GPS antenna GPS Receiver (GPSR) and built -in GPS RF
antenna. The RGPS head output timing signal is routed to the DMI controller via the S SI.
The RGPS head is the primary source for BTS system timing.
UBS Macro BTS FRU List
Before replacing components that are not covered in this manual, contact Motorola
Customer Network Resolution Center for special instructions that may be involved.
Each BTS FRU procedure specifies the required FRU(s) along with its model/part number .
T able 1 -3 lists all the supported UBS Macro BTS FRUs.
68P09283A64 -3 1 -23
FOA SEP 2007