User's Manual

Table Of Contents
Expansion of the +27 V Frame
68P64115A194
Mar 2003
1X SC 4812T-MC BTS Hardware Installation - Software Release R2.16.1.x
CONTROLLED INTRODUCTION
3-8
Expansion of the +27 V Frame
Site configurations can include a +27 V SC 4812T–MC BTS Starter
Frame using either a +27 V SC 4812T–MC BTS frame or a +27 V SC
4812T BTS as an Expansion frame.
Another site configuration can include a +27 V SC 4812T BTS Starter
Frame using a +27 V SC 4812T–MC BTS frame as an Expansion frame.
Antenna Sharing
Separate TX antennas are used in each frame. One Expansion frame can
share RX antennas with the Starter Frame. RX antenna sharing is shown
in Figure 3-6.
Figure 3-6: RX Antenna Sharing with an Expansion Frame
RX
EXP.
OUT
RX
EXP.
IN
RX
TX
TX
Starter Frame
Expansion Frame
ti-CDMA-WP-00056-v01-ildoc-ftw–REFREF
Tools Required
S T10 and T30 Torx bits and driver
S Flat head screwdriver or 5/16” Hex socket
S Torque driver
NOTE
Use the following procedures to add an Expansion frame to a
Starter frame. The instructions are identical when connecting a
SC 4812T–MC BTS “Expansion” frame to either a SC 4812T or
SC4812T–MC BTS “Starter” frame.
Expansion Procedure
Table 3-2 provides the procedures necessary to install a SC 4812T–MC
BTS Expansion Frame to a Starter frame.
Table 3-2: Installing an Expansion BTS
Step Action
1 Confirm the BTS is powered down.
2 Locate the Expansion I/O Filler Plate on the Starter Frame I/O plate (see Figure 3-3).
3 Using the Torx T10 bit, remove four M3 screws attaching the Expansion I/O Filler Plate to the I/O
plate. (The filler plate can be discarded.)
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