Atp Tools And Materials; Policy; Test Equipment Calibration; Test Cable Calibration - Motorola SC 300 Installation Manual

ATP Tools and Materials

Policy

Test equipment calibration

Test cable calibration

Equipment Warm–up
JAN 2002
SCt300 1X BTS Hardware Installation, ATP, and FRU Procedures
To ensure consistent, reliable and repeatable test results, test equipment
meeting the following technical criteria should be used to perform the
ATP on the BTS equipment.
NOTE
During manual testing, you can substitute supported test
equipment with other test equipment models not supported
by the LMF. However, they must meet 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 the ATP or
troubleshooting, make sure that the test equipment needed is on hand
and operating properly.
Optimum system performance and capacity depend on regular test
equipment service, calibration, and characterization. Follow the original
equipment manufacture (OEM) recommended maintenance and
calibration schedules closely.
Equipment test cables are very important in the ATP. It is recommended
that the cable calibration be run at every BTS with the test cables
attached. 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 is to account for the loss by entering it into the Local
Maintenance Facility (LMF) during the optimization procedure. This
method requires accurate test cable characterization in a lab
environment. The cable should be tagged with the characterization
information prior to field optimization.
After arriving at the a site, the test equipment should be plugged in and
turned on to allow warm up and stabilization to occur for as long as
possible. The following pieces of test equipment must be warmed–up for
a minimum of 60 minutes prior to the ATP.
S
Communications Test Set
S
Power Meter
DRAFT
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