Instruction Manual
Table Of Contents
- Contents
- Figures
- Tables
- General Safety
- Introduction
- Preliminary Operations
- Optimization/Calibration
- Automated Acceptance Test Procedures (ATPs)
- Leaving the Site
- Basic Troubleshooting
- Data Sheets
- Test Matrix
- BBX Gain Set Point vs BTS Output
- CDMA Operating Frequency
- PN Offset/I & Q Register
- Test Equipment Preparation
- In-Service Calibration
- Index
Troubleshooting: Transmit ATP
DRAFT
SC4812ET BTS Optimization/ATP — CDMA LMF
Apr 2001
6-8
Cannot Perform Txmask
Measurement
Table 6-10: Troubleshooting TX Mask Measurement Failure
Step Action
1 Verify that TX audit passes for the BBX2(s).
2 If performing manual measurement, verify analyzer setup.
3 Verify that no LPA in the sector is in alarm state (flashing red LED). Re-set the
LPA by pulling the circuit breaker, and, after 5 seconds, pushing it back in.
Cannot Perform Rho or Pilot
Time Offset Measurement
Table 6-11: Troubleshooting Rho and Pilot Time Offset Measurement Failure
Step Action
1 Verify presence of RF signal by switching to spectrum analyzer screen.
2 Verify PN offsets displayed on the analyzer is the same as the PN offset in the
CDF file.
3 Re–load MGLI2 data and repeat the test.
4 If performing manual measurement, verify analyzer setup.
5 Verify that no LPA in the sector is in alarm state (flashing red LED). Reset the
LPA by pulling the circuit breaker, and, after 5 seconds, pushing back in.
6 If Rho value is unstable and varies considerably (e.g. .95,.92,.93), this may
indicate that the GPS is still phasing (i.e. trying to reach and maintain 0 freq.
error). Go to the freq. bar in the upper right corner of the Rho meter and select Hz.
Press <Shift–avg> and enter 10, to obtain an average Rho value. This is an
indication the GPS has not stabilized before going INS and may need to be
re-initialized.
6