User Manual

Optimization Overview – continued

Jan 2002

1-7

SC4812ET BTS Optimization/ATP — CDMA LMF

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.

Always refer to specific OEM test equipment

documentation for detailed operating instructions.

NOTE

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

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

interface the LMF Ethernet connection to the frame.

NOTE

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:

– This solution passes only the three minimum electrical connections

between the LMF and the GPIB interface. The control signals are

jumpered as enabled on both ends of the RS–232 cable (9–pin D).

TX and RX signals are crossed as null modem effect. Pin 5 is the

ground reference.

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