User Manual
Introduction68P09255A57-2
Aug 2002
SC4812ET Optimization/ATP Manual Software Release R16.1.x.x
PRELIMINARY
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Basic troubleshooting, consisting of procedures for installation,
calibration, transmit and receive tests, backplane problems, GPS
failures, and module connectors.
Appendices contain pertinent Pseudorandom Noise (PN) Offset,
frequency programming, output power data tables, data sheets that are
filled out manually by the CFE at the site, an optimization/ATP test
matrix, BBX gain set point information, CDMA operating frequency
information, PN Offset programminginformation, information on test
equipment preparation, manual cable calibration procedures, power
Delta calibration procedures, RF cabinet interconnect cable
information, procedures for checking changing GPIB addresses, and
proceduress for downloading ROM Code from the LMF.
CDMA LMF Product Description
The Code Division Multiple Access (CDMA) LMF is a graphical user
interface (GUI) based LMF. This product is specifically designed to
provide cellular communications field personnel the vehicle to support
the following CDMA BTS operations:
Installation
Maintenance
Calibration
Optimization
The LMF also provides Command Line Interface (CLI) capability.
Activate the CLI by clicking on a shortcut icon on the desktop. The CLI
cannot be launched from the GUI, only from the desktop icon.
Online Help
Task oriented online help is available in the LMF by clicking on Help
from the menu bar.
Why Optimize?
Proper optimization and calibration assures:
Accurate downlink RF power levels are transmitted from the site.
Accurate uplink signal strength determinations are made by the site.
What Is Optimization?
Optimization compensates for the site-specific cabling and normal
equipment variations. Cables that interconnect the BTS and Duplexer
assemblies (if used), for example, are cut and installed at the time of the
BTS frame installation at the site. Site optimization guarantees that the
combined losses of the new cables and the gain/loss characteristics and
built-in tolerances of each BTS frame do not accumulate, causing
improper site operation.
Optimization identifies the accumulated loss (or gain) for all receive and
transmit paths at the BTS site, and stores that value in a database.
The RX path starts at the ancillary equipment frame RFDS RX
directional coupler antenna feedline port, through the RX input port
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