Test Procedures
35
©2000Motorola, 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.
Summary of Contents for T2290
Page 1: ...DIGITAL WIRELESS TELEPHONE Service Manual Level 3 Release 1 TDMA T2290 T2297 ...
Page 26: ... 2000 Motorola Inc TDMA T2290 T2297 Cellular Overview 16 ...
Page 40: ...Motorola Confidential Proprietary TDMA T2290 T2297 TDMA Test Mode NAM Programming 30 ...
Page 68: ...Disassembly TDMA T2290 T2297 Keypad Removal Motorola Confidential Proprietary 58 ...