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
Apr 2001
1-13
SC4812ET BTS Optimization/ATP — CDMA LMF
DRAFT
Equipment Overview
The SC 4812ET BTS consists of an RF Cabinet that is an outdoor,
weatherized version of the SC 4812T. The RF cabinet is powered by
27 Vdc and each cabinet has the capability to support up to 4 carriers (at
3 sector) or 2 carriers (at 6 sector).
The RF Cabinet houses the fan modules, C–CCP, LPA modules, LPA
trunking backplane, Bandpass 2:1 & 4:1 Combiners, Duplexer/Receive
Filter/Directional Couplers (DRDC) and a DC Power distribution
assembly. The Power Cabinet (PC) provides +27 Vdc distribution and
battery backup for the SC 4812ET. The Power Cabinet houses batteries,
battery heaters, rectifiers, an AC Load Center (ACLC), a power
distribution assembly, and two duplexed GFCI convenience outlets.
Logical BTS
A logical BTS can consist of up to four SC 4812ET frames. When the
LMF is connected to frame 1 of a logical BTS, you can access all
devices in all of the frames that make up the logical BTS. A logical BTS
CDF file that includes equippage information for all of the logical BTS
frames and their devices is required. A Centralized Base Station
Controller (CBSC) file that includes channel data for all of the logical
BTS fames is also required.
The first frame of a logical BTS has a –1 suffix (e.g., BTS–812–1) and
other frames of the logical BTS are numbered with suffixes, –101, –201,
and –301 (e. g. BTS–812–201). When you log into a BTS a FRAME
tab is displayed for each frame. If there is only one frame for the BTS,
there will only be one tab (e.g., FRAME–282–1) for BTS–282. If a
logical BTS has more than one frame, there will be a separate FRAME
tab for each frame (e.g. FRAME–438–1, FRAME–438–101, and
FRAME–438–202 for a BTS–438 that has all three frames). If an
RFDS is included in the CDF file, an RFDS tab (e.g., RFDS–438–1)
will be displayed.
Actions (e.g., ATP tests) can be initiated for selected devices in one or
more frames of a logical BTS. Refer to the Select devices help screen
for information on how to select devices.
C–CCP Shelf Card/Module Device ID Numbers
All cards/modules/boards in the frames at a single site, assigned to a
single BTS number, are also identified with unique Device ID numbers
dependent upon the Frame ID number in which they are located. Refer to
Table 1-3 and Table 1-4 for specific C–CCP Shelf Device ID numbers.
1