User's Manual

Expansion of the +27 V Frame
68P64115A19–4
Mar 2003
1X SC 4812T-MC BTS Hardware Installation - Software Release R2.16.1.x
CONTROLLED INTRODUCTION
3-9
Table 3-2: Installing an Expansion BTS
Step Action
4 Install the Expansion I/O Housing on the Starter I/O in the same area as the filler plate.
5 Secure the housing to the I/O plate by using four M3x10 screws, T10 Torx bit and torque to
10–12 in-lb. The label FRONT on the Expansion I/O housing should face EXP I/O text on the
I/O plate.
6 Using the T30 bit, remove the eight M6 screws attaching the front cosmetic panel to the cabinet.
7 Locate the two Expansion OUT cables tie-wrapped behind the front cosmetic panel.
8 Remove Harting terminators, if present, on the Expansion out cables.
9 Carefully cut the tie-wrap, taking care as not to cut cables, and insert the cables into the Expansion
I/O housing from below the I/O plate. Note the cables are keyed, and can only be installed one way in
the Expansion I/O housing. Confirm the cables are fully snapped into place in the Expansion I/O
housing.
10 Attach the front cosmetic panel to the cabinet using the eight M6 screws torqued to 45 in-lb.
11 Install one end of the RF expansion cable (see Figure 3-4) to the Starter frame by plugging the end of
the cable labeled SC 4812T into the Expansion I/O housing labeled EXP I/O, located on the Starter
frame I/O plate (see Figure 3-3). The cable is keyed and can only be installed one way.
12 Secure the connection by fastening the four retention screws of the cable into the Expansion I/O
housing. The screws should be fastened to 20 in-lb torque using a flat head screwdriver or a 5/16”
socket and ratchet.
13 Following the same procedure, install the other end of the RF expansion cable, labeled SC 4812T
EXP to the expansion housing labeled EXP I/O on the +27 V SC 4812T (1800 mm) Expansion
frame I/O plate (see Figure 3-2).
3