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
Span Lines – Interface and Isolation68P64115A18–1
Mar 2003
1X SC 4812T Lite BTS Optimization/ATP Software Release R2.16.1.x
DRAFT
3-15
Span Lines – Interface and Isolation
T1/E1 Span Interface
NOTE
At active sites, the OMC–R/CBSC must disable the BTS and
place it out of service (OOS). DO NOT remove the span line
cable connectors until the OMC–R/CBSC has disabled the BTS.
Each frame is equipped with one 50–pair punchblock for spans,
customer alarms, remote GPS, and BTS frame alarms. See NO TAG and
refer to NO TAG for the physical location and punchdown location
information.
Before connecting the LMF computer to the frame LAN, the
OMC–R/CBSC must disable the BTS and place it OOS. This will allow
the LMF to control the BTS, and prevent the CBSC from inadvertently
sending control information to the BTS during LMF–based tests.
Isolate BTS from T1/E1 Span(s)
Once the OMC–R/CBSC has disabled the BTS, the span(s) must be
disabled to ensure the LMF will maintain control of the BTS. To disable
the spans, disconnect the BTS–to–CBSC Transcoder span cable
connectors from the Span I/O cards (Figure 3-2).
Figure 3-2: Span I/O Board T1 Span Isolation
50–PIN TELCO
CONNECTORS
REMOVED
SPAN B CONNECTOR
(TELCO) INTERFACE
TO SPAN LINES
(IF USED
SPAN A CONNECTOR
(TELCO) INTERFACE
TO SPAN LINES
TOP of Frame
(Site I/O and Span I/O boards)
RS–232 9–PIN SUB D
CONNECTOR SERIAL
PORT FOR EXTERNAL
DIAL UP MODEM
CONNECTION (IF USED)
FW00299 REF
3