User's Manual Part 2

TX Pilot Time Offset Acceptance Test
PRELIMINARY
1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU
MAY 2004
7-16
Background
Overview – This test verifies the transmitted pilot channel element Pilot
Time Offset of each operator–selected BBX carrier keyed up at a specific
frequency specified in the current CDF. All tests will be performed using
the external, calibrated test equipment controlled by the same command.
All measurements will be made at the BTS TX antenna connector.
Equipment Operation During Testing – The pilot gain will be set to
262 for each antenna and all TCH elements from the MCCs will be
forward–link disabled. The selected BBXs will be keyed using both
bbxlvl and BLO to generate a CDMA carrier (with pilot channel
element only, Walsh code 0). TX power output is set at 40 dBm as
measured at the TX output.
Test Measurements – The test equipment will measure and return the
Pilot Time Offset in ms, verifying that results meet the following
specification:
Pilot Time Offset should be within 3 ms of the target PT Offset
(zero ms).
This test also executes and returns the TX Frequency and
TX Waveform Quality (rho) ATP tests, however, only Pilot
Time Offset results are written to the ATP test report.
NOTE
Pilot Time Offset Acceptance
Test
Follow the steps in Table 7-7 to verify the Pilot Time Offset on the TX
antenna paths for the selected BBXs.
Table 7-7: Test Pilot Time Offset
Step Action
1 Set up the test equipment for TX acceptance tests per Table 7-1.
2 Select the BBXs to be tested.
3 Click on Tests in the BTS menu bar, and select TX > Pilot Time Offset... from the pull–down menus.
4
Select the appropriate carrier(s) and sector(s) (carrier-bts#-sector#-carrier#) from those displayed in the
Channels/Carrier pick list.
NOTE
To select multiple items, hold down the Shift or Ctrl key while clicking on pick list items to select
multiple carrier(s)–sector(s).
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