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
BTS Equipment Identification – continued
DRAFT
SC4812ET BTS Optimization/ATP — CDMA LMF
Apr 2001
1-20
SC 4812ET Trunking Backplane
The Trunking Backplane contains a complex passive RF network that
allows RF signals to share the resources of a bank of four LPAs. It also
provides DC Power and digital interconnect.
SPAN I/O
RFGPS
RF CABINET
(Rear View)
RFDS Expansion
RF Expansion
Exp. Punch
Punch
Block
Block
27V
27V Ret
DC Conduit
Pilot Beacon
Microwave
RF GPS
LAN
2 Sec Tick
19 MHz Clock
Ground Cable
Lugs
1–3 Sector Antennas
4–6 Sector Antennas
Span/Alarm
Expansion 1
Expansion 2
RF CABINET
(Rear Door closed)
RGPS
FW00147
Figure 1-6: SC 4812ET Intercabinet I/O Detail (Rear View)
1