User's Manual
Bay Level Offset Calibration
68P09255A69-3
Aug 2002
1X SC4812ET Lite BTS Optimization/ATP Software Release 2.16.1.x
PRELIMINARY
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NOTE
Due to the size of the file, Motorola recommends printing out a
copy of a
bts- #.cal file and referring to it for the following
descriptions.
CAL File Organization
The CAL file is subdivided into three sections called “slot Blocks”.
These are:
1. Slot[1] Block which contains the calibration data for the six primary
BBX slots.
2. Slot[20] Block which contains the calibration data for the redundant
BBX (see Table 3-37).
3. Slot[385] Block which contains the calibration data for the RFDS.
BBX Slot Block Parts
BBX slot Blocks are further subdivided into the parts described in the
following:
Slot Block Header - Each BBX slot Block has a header section (slot
header) which contains:
A creation Date and Time - broken down into separate parameters of
createMonth, createDay, createYear, createHour, and createMin.
The number of calibration entries in the file - the numBayLevelPts
parameter. The parameter is fixed at 720 entries for SC4812-series
frames. These 720 entries are combined to define the 360 calibration
points of the CAL file.
The slot Block format parameter.
Slot Block Bay Level Calibration Data - Each BBX slot Block has a
Bay Level Calibration data section (BayLevelCal) which is organized as
a large flat array. The array is organized by branch, SCCP cage BBX
slot, and calibration entries. There are several ways to look at the array
contents. Two different views are provided in the following to illustrate
the significant features of BayLevelCal section content and organization:
The first view of the array is shown in Table 3-36. This view shows
the three branches of the array, transmit, main receive, and diversity
receive offsets, and the calibration entry ranges which apply to each.
Table 3-36: BLO
bts- #.cal File Array Branch Assignments
Range Branch Assignment
C[1]-C[120] Transmit
C[121]-C[240] No SC4812ET Lite BLO cal
point entries (default only)
C[241]-C[360] Receive
C[361]-C[480] No SC4812ET Lite BLO cal
point entries (default only)
C[481]-C[600] Diversity Receive
C[601]-C[720] No SC4812ET Lite BLO cal
point entries (default only)
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