User Manual

Bay Level Offset Calibration – continued
5/21/04 1X SC4812T–MC BTS Optimization/ATP 3-85
DRAFT
Single–sided BLO Checkbox
Another option that appears in the pull–down menu is Single–sided
BLO. Normally valid BLO values are some value plus–or–minus some
offset. The ranges currently used for calibration are wider than necessary
to accommodate the redundant BBX. The lower half of the allowable
range is where non–redundant BBXs should function. Single–sided BLO
spec is >
35dB. Double–sided BLO spec is 40+5dB. To get the more
stringent conditions, the operator checks Single–sided BLO when
calibrating non-redundant transceivers. Single–sided BLO carries the
likelihood of more failures. This option should only be used by
experienced CFEs.
The Tests > TX > TX Calibration... menu window has a Test Pattern
pull–down menu. This menu has the following choices:
S Pilot (default) – performs tests using a pilot signal only. This pattern
should be used when running in–service tests. It only requires a BBX
to do the test.
S Standard – performs the tests using pilot, synch, paging and six
traffic channels. This pattern should be used on all non–in–service
tests. Standard requires a BBX and an MCC. Standard uses gain
values specified by the IS97 standard.
S CDFPilot –performs the tests using the pilot signal, however, the gain
is specified in the CDF file. Advanced users may use CDFPilot to
generate a Pilot pattern using the value specified by the PilotGain
parameter in the CDF file instead of a pre–determined value.
S CDF – performs the tests using pilot, synch, paging and six traffic
channels, however, the gain for the channel elements is specified in
the CDF file. Advanced users may use CDF to generate a standard
pattern. Instead of using the values specified by IS97, the settings for
the following CDF parameters are used:
– PilotGain
– PchGain
– SchGain
– NomGain1Way
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