User's Manual

Required Test Equipment and Software

68P09255A69-3

Aug 2002

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

PRELIMINARY

1-6

Required Test Equipment and Software

Policy

To ensure consistent, reliable, and repeatable optimization test results,

test equipment and software meeting the following technical criteria

should be used to optimize the BTS equipment. Test equipment can, of

course, be substituted with other test equipment models if the equipment

meets the same technical specifications.

It is the responsibility of the customer to account for any measurement

variances and/or additional losses/inaccuracies that can be introduced

as a result of these substitutions. Before beginning optimization or

troubleshooting, make sure that the test equipment needed is on-hand

and operating properly.

Test Equipment Calibration

Optimum system performance and capacity depend on regular equipment

service and calibration prior to BTS optimization. Follow the original

equipment manufacturer (OEM) recommended maintenance and

calibration schedules closely.

Test Cable Calibration

Test cables can make critical differences in optimization accuracy. It is

recommended that cable calibration be run at every BTS with the

complete test equipment set. This method compensates for test cable

insertion loss within the test equipment itself. No other allowance for

test cable insertion loss needs to be made during the performance of

tests.

Another method to account for cable loss is by entering it into the LMF

during the optimization procedure. This method requires accurate test

cable characterization using shop test equipment. Characterized cables

should be tagged with the characterization information, and the

measured losses entered into the LMF before field optimization.

Equipment Warm-up

After arriving at a site, test equipment should be plugged in and turned

on immediately to provide the longest possible time for warm up and

stabilization. The following pieces of test equipment must be warmed up

for a minimum of 60 minutes prior to use for BTS optimization or RFDS

calibration:

 Communications test set.

 Rubidium time base.

 Power meter.