Abbreviations In Troubleshooting Charts; Introduction - Nokia NPM-10 Series Troubleshooting Instructions

CCS Technical Documentation
RF Troubleshooting

Abbreviations in Troubleshooting Charts

BB
DC
ESD
LF
LO
LPF
PA
PLL
PWB
RCT
RF
RX
TX
UHF
VCO

Introduction

Two types of measurements are used in the following. It will be specified if the measure-
ment type is "RF" or "LF".
• RF measurements should be done with a Spectrum Analyzer with a
high impedance probe. (Note Signal levels can vary depending on
measurement setup, therefore it is recommended that a known good
phone is used as a benchmark for the measurement technique used.
Measurements stated in this section were done with a HP85024 high
impedance probe.).
• Note that the test jigs have some losses which must be taken into con-
sideration when calibrating the test system.
Issue 1 03/2003
Base Band
Direct Current
ElectroStatic Dicharge
Low Frequency
Local Oscillator
Low Pass Filter
Power Amplifier
Phase Locked Loop
Printed Wiring Board
Radio Communication Tester
Radio Frequency
Receiver
Transmitter
Ultra High Frequency
Voltage Controlled Oscillator
Nokia Corporation
Troubleshooting Instructions RF
Confidential
NPM-10
Page 5