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
RFDS Setup and Calibration – continued
DRAFT
SC4812ET BTS Optimization/ATP — CDMA LMF
Apr 2001
3-76
Table 3-41: Measuring Directional Coupler Loss
Step Action
16 Observe the power reading and record the value measured at the ANT (antenna) port.
17 Select the BBX.
18 Select Device>Dekey XCVR. The status report window appears verifying the action has passed (the
XCVR is no longer keyed up). Click OK.
19 Take the value of the Forward test and subtract the Antenna port value
from it to get the directional coupler loss. For example:
–28.7 –31.6
– 1.9 – – 1.2
––––––––– –––––––––––
–30.6dBm –30.4dBm
20 Label the directional coupler results for in–service calibration reference.
3