User's Manual
Table Of Contents
- Chapter 1: Introduction
- Chapter 2: Preparatory Tasks
- Chapter 3: Optimization/Calibration
- Introduction to Optimization and Calibration
- Preparing the LMF
- Overview of Packet BTS Files
- LMF Features and Installation Requirements
- LMF File Structure Overview
- LMF Home Directory
- NECF Filename Conventions and Directory Location
- LMF Installation and Update Procedures
- Copy BTS and CBSC CDF (or NECF) Files to the LMF Computer
- Creating a Named HyperTerminal Connection for MMI Communication
- Span Lines - Interface and Isolation
- LMF to BTS Connection
- Switching the Active LAN - LMF I/O Panel 10Base-2 LAN Connection
BTS Equipment Identification
1-16 1X SC 4812T Lite BTS Optimization/ATP FEB 2005
PRELIMINARY
Equipment Overview
Stand-Alone Frame
The 1X SCt4812T–Lite BTS Frame consists of a single cabinet
containing RF and Power Amplifier components. The BTS may be
powered by:
S 220V AC (rectified internally to +27V DC)
S –48V DC (power converted internally to +27V DC)
S +27V DC
Each frame can support up to two carriers in a 3–Sector Configuration.
Six–sector operation is not supported with any SC4812T Lite
configuration.
Figure 1-2 illustrates the external features of the BTS Frame, the single
major component of the Motorola SC4812T Lite.
Expansion Site
Where more than two carriers are desired at a T Lite BTS Site, the
original Starter Frame must be modified and an additional Expansion
Frame with one or two carriers must be employed to achieve up to 4
carriers. Like the BTS Starter Frame, each cabinet contains RF and
Power Amplifier components and employ the same Power Schemas as the
BTS Starter Frame.
The BTS Frame Cabinet is identical for Starter and Expansion Frames
except for the I/O Interconnect Panel. These differences are illustrated in
Figure 1-3 through Figure 1-7.
Frame Configurations
Starter and Expansion Frame configurations are described as follows:
Starter Frame configuration supports one or two carriers, each with
separate Antenna Sets. It can operate as a Stand–Alone BTS, or can be
modified in the field to the Expansion Frame configuration.
Expansion Frame configuration supports one or two carriers using 2:1
TX Combiners and a single Antenna Set for the frame. It operates with an
SC4812T Lite Starter Frame that has its own antennas and different
carriers. Expansion Frames share RX Signals to provide Diversity RX for
the opposite frame. Expansion Frames allow equipping a single SC4812T
Lite BTS Site with up to four carriers.
Logical BTS
The BTS Software implements the Logical BTS capability. Previously, all
BTS Frames co–located at a single site had to be identified in the network
with separate and distinct BTS ID Numbers. In the Logical BTS Feature,
all frames located at a single BTS Site are identified with unique Frame
ID Numbers (Frame ID Numbers 1, 101, 201, 301) under a single (site)
BTS ID Number.
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