User's Manual
Table Of Contents
- Contents
- Chapter 1 Introduction
- Chapter 2 Preliminary Operations
- 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
- Using the LMF
- Pinging the Processors
- Download the BTS
- CSM System Time - GPS & LFR/HSO Verification
- Test Equipment Set-up
- Test Set Calibration
- Background
- Calibration Procedures Included
- GPIB Addresses
- Selecting Test Equipment
- Manually Selecting Test Equipment in a Serial Connection Tab
- Automatically Selecting Test Equipment in the Serial Connection Tab
- Calibrating Test Equipment
- Calibrating Cables Overview
- Calibrating Test Cabling using Communications System Analyzer
- Calibrate Test Cabling Using Signal Generator & Spectrum Analyzer
- Setting Cable Loss Values
- Setting TX Coupler Loss Value
- Bay Level Offset Calibration
- Purpose of Bay Level Offset Calibration
- What is BLO Calibration?
- Component Verification During Calibration
- When to Calibrate BLOs
- BLO Calibration Data File
- Test Equipment Setup for RF Path Calibration
- Transmit (TX) Path Calibration Description
- TX Calibration and the LMF
- TX Calibration
- All Cal/Audit and TX Calibration Procedure
- Download BLO Procedure
- Calibration Audit Introduction
- TX Path Audit
- TX Audit Test
- Create CAL File
- RFDS Set-up and Calibration
- Alarms Testing
- Chapter 4 Automated Acceptance Test Procedures
Introduction to Optimization and Calibration
68P64115A18–1
Mar 2003
1X SC 4812T Lite BTS Optimization/ATP Software Release R2.16.1.x
DRAFT
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transmit antenna based on site geography, antenna placement, and
government regulations. Working from this ERP requirement, antenna
gain and antenna feed line loss can be combined to calculate the
required transmit power at the frame antenna connections. The
corresponding BBX output power required to achieve that power level
on any channel/sector can then be determined based on Bay Level
Offset (BLO) data established during the optimization process.
NOTE
Refer to Figure 3-1 and the LMF Help function on–line
documentation for additional information on the layout of the
LMF directory structure (including CDF/NECF file locations
and formats).
BTS System Software Download
BTS system software must be successfully downloaded to the BTS
processor boards before optimization can be performed. BTS operating
code is loaded from the LMF computer terminal.
BTSs configured for Circuit Backhaul use bts.cdf files. BTSs configured
for Packet Backhaul use bts.necf files (bts–xxx.xml) located on the
OMC/R.
NOTE
Before using the LMF for optimization/ATP, the correct
bts–#.cdf and cbsc–#.cdf or bts–#.necf and cbsc–#.necf files for
the BTS must be obtained from the CBSC and put in a bts–#
folder in the LMF. Failure to use the correct CDF/NECF files
can cause wrong results. Failure to use the correct CDF/NECF
files to log into a live (traffic carrying) site can shut down the
site.
The CDF/NECF is normally obtained from the CBSC on a DOS
formatted diskette, or through a file transfer protocol (ftp) if the LMF
computer has ftp capability. Refer to the LMF Help function on–line
documentation for the procedure.
Site Equipage Verification
If you have not already done so, use an editor to view the CDF/NECF,
and review the site documentation. Verify the site engineering equipage
data in the CDF/NECF matches the actual site hardware using a
CDF/NECF conversion table.
CAUTION
– Use extreme care not to make any changes to the
CDF/NECF content while viewing the file. Changes to the
CDF/NECF can cause the site to operate unreliably or
render it incapable of operation.
– Always wear a conductive, high impedance wrist strap
while handling any circuit card/module to prevent damage
by ESD. Extreme care should be taken during the removal
and installation of any card/module. After removal, the
card/module should be placed on a conductive surface or
back into the anti–static bag in which it was shipped.
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