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
Test Set Calibration
68P64115A18–1
Mar 2003
1X SC 4812T Lite BTS Optimization/ATP Software Release R2.16.1.x
DRAFT
3-82
Setting TX Coupler Loss Value
If an in–service TX coupler is installed, the coupler loss must be
manually entered so it will be included in the LMF TX calibration and
audit calculations.
Prerequisites
S LMF is logged into the BTS
S Path loss, in dB, of the TX coupler must be known
Table 3-30: Setting TX Coupler Loss Values
Step Action
1 Click Util in the BTS menu bar, and select Edit > Coupler Loss... in the pull–down menus.
–A tabbed data entry pop–up window will appear.
2 Click on the TX Coupler Loss tab or the RX Coupler Loss tab, as required
3 Click in the Loss (dBm) column for each carrier that has a coupler and enter the appropriate value.
4 To edit existing values, click in the data box to be changed and change the value.
5 For each tab with changes, click on the Save button to save displayed values.
6
Click on the Dismiss button to close the window.
NOTE
S Values entered or changed after the Save button is used will be lost when the window is dismissed.
S The In–Service Calibration check box in the Tools > Options > BTS Options tab must be
checked before entered TX coupler loss values will be used by the TX calibration and audit
functions.
S New or changed values will be used by the LMF as soon as they are saved. Logging out and logging
in again are not required to cause saved changes to take effect.