User's Manual

In–Service Calibration
68P64115A18–1
Mar 2003
1X SC 4812T Lite BTS Optimization/ATP Software Release R2.16.1.x
DRAFT
H-18
In–Service Calibration
CAUTION
This feature does NOT have fault tolerance at this time. The
system has no safe–guards to prevent actions which will put the
BTS out of service. If possible, perform this procedure during a
maintenance window.
Follow the procedures in this section precisely, otherwise the
entire BTS will most likely go OUT OF SERVICE.
At the CBSC, only perform operations on expansion hardware
when it is in the OOS_MANUAL state.
The operator must be trained in the LMF operation prior to
performing this procedure.
Prerequisites
S Any applicable expansion hardware has been added in the CBSC
database, and a CDF which includes the additions has been generated.
S Any expansion devices have been inserted into the SCCP cage and are
in the OOS_MANUAL state at the CBSC MM.
S The site specific CDF (with any expansion hardware) and CAL files
have been loaded onto the LMF.
S The LMF has the same device binary code and dds files as the CBSC.
CAUTION
Do not download code or data to any cards other than those
being worked on. Downloading code or data to other cards will
take the site OUT OF SERVICE.
The code file version numbers must match the current BSS
software release version numbers required for the equipped
devices (refer to NO TAG). If the numbers do not match, the site
may go OUT OF SERVICE.
It is mandatory that the bts–#.cdf and cbsc–#.cdf files
on the LMF computer for this BTS are copies of the
corresponding files created in the CBSC database (see
Table 3-2).
The CAL file loaded on the LMF computer for this BTS must
have come from the CBSC.
S Test equipment has been connected as shown in Figure H-12 or
Figure H-13.
S An RFDS (or as a minimum, a directional coupler), whose loss is
already known, must be in the applicable TX antenna path to perform
the in–service calibration.
S Test equipment has been calibrated after a 60–minute warm up.
S A short RF cable and two BNC–N adapters are available to perform
Cable Calibration.
S N–SMA cable adapters are available to connect to TRDC or DRDC
BTS CPLD connectors, and are included in cable loss measurements.
H