User's Manual

TX Pilot Time Offset Acceptance Test68P09255A69-3

Aug 2002

1X SC4812ET Lite BTS Optimization/ATP Software Release 2.16.1.x

PRELIMINARY

4-21

TX Pilot Time Offset Acceptance Test

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).

Redundant BBX Testing - The BBX will then de-key, and if selected,

the redundant BBX will be assigned to the current TX antenna path

under test. The test will then be repeated for the redundant BBX.

NOTE

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.

Pilot Time Offset Acceptance Test

Follow the steps in Table 4-10 to verify the Pilot Time Offset on the TX

antenna paths for the selected BBXs.

Table 4-10: Test Pilot Time Offset

Step Action

1 Set up the test equipment for TX acceptance tests per Table 4-3.

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.

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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