Motorola M3097 Service Manual download pdf (Page 46)

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©1999 Motorola, Inc.

Introduction

The phone allows keypad controlled testing

of various analog and digital operating pa-

rameters.

This chapter includes the keypad button

functions and recommended equipment

setup to use when testing a phone.

Automatic Call-Processing Tests

Most communications analyzers can simu-

late a cell site in order to perform automatic

call-processing tests. Automatic call process-

ing tests can be performed while the phone

is in its power-up state. However, it is useful

to do the tests with the phone in Test Mode

Status Display.

Refer to the communications analyzer’s

manual for details about performing call-pro-

cessing tests. The following call-processing

test sequence is recommended:

1. Inbound call, analog mode

2. Outbound call, analog mode

3. Analog-to-Analog channel handoff

4. Analog-to-Digital channel handoff

5. Inbound call, digital mode

6. Outbound call, digital mode

7. Digital-to-Digital channel handoff

8. Digital-to-Analog channel handoff

Handoffs should be performed between low,

middle, and high frequency channels, such

as, 991 (lowest frequency), 333 (middle fre-

quency), and 799 (highest frequency). In digi-

tal mode slots 1 & 4, 2 & 5, and 3 & 6 should

be verified.

Analog Test Measurements

• RX Sensitivity (SINAD)

• RX Audio Distortion

• TX Power Out

• TX Frequency Error

• TX Audio Distortion

• TX Maximum Deviation

• TX SAT Deviation

• TX ST Deviation

Digital Test Measurements

• Digital RX Sensitivity (BER)

• Digital Power Out

• TX Frequency Error

• Digital Modulation Stability (EVM)

The analog and digital parameters are stored

in EPROM on the Transceiver Board. Each

transceiver is shipped from the factory with

these parameters already calibrated. How-

ever, if a board is repaired, these parameters

should be measured and, if necessary, ad-

justed. Checking and adjusting calibration

parameters is also useful as a troubleshoot-

ing/diagnostic tool to isolate defective assem-

blies.

Test Procedures

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