User Manual

Test Equipment68P09255A57-2

Aug 2002

SC4812ET Optimization/ATP Manual Software Release R16.1.x.x

PRELIMINARY

1-9

Test Cable Calibration

Equipment test cables are very important in optimization. Motorola

recommends 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 LMF

during the optimization procedure. This method requires accurate test

cable characterization in a shop. The cable should be tagged with the

characterization information prior to field optimization.

Equipment Warm-up

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 using for BTS optimization or RFDS

calibration procedures.

 Communications test set

 Rubidium time base

 Power meter

Test Equipment List

The following pieces of test equipment are required during the

optimization procedure. Common assorted tools like screwdrivers and

frame keys are not listed but are still required. Read the owner’s manual

on all of the following major pieces of test equipment to understand their

individual operation prior to use in optimization.

NOTE

Always refer to specific OEM test equipment documentation for

detailed operating instructions.

10BaseT/10Base2 Converter

Ethernet LAN transceiver (part of CGDSLMFCPQ1700)

 PCMCIA Ethernet Adpater + Ethernet UTP adapter: 3COM model -

Etherlink III 3C589B

Transition Engineering model E-CX-TBT-03 10BaseT/10Base2

converter

NOTE

Xircom model PE3-10B2 or equivalent can also be used to

interface the LMF Ethernet connection to the frame.

RS-232 to GPIB Interface

 National Instruments GPIB-232-CT with Motorola CGDSEDN04X

RS232 serial null modem cable (see Figure 1-1) or equivalent; used to

interface the LMF to the test equipment.

 Standard RS-232 cable can be used with the following modifications: