User Guide

TX Radio transmitter

UEME Universal energy management chip (enhanced version)

UEMEK See UEME

UI User interface

UPP Universal phone processor

UPP_WD2 Communicator version of DCT-4 system ASIC

USB Universal serial bus

VBAT Battery voltage

VCHAR Charger voltage

VCO Voltage controlled oscillator

VCTCXO Voltage controlled temperature compensated crystal oscillator

VCXO Voltage controlled crystal oscillator

VSIM SIM voltage

WD Watchdog

Zocus Current sensor (used to monitor the current flow to and from the battery)

RM-51

Nokia Customer Care Glossary of terms

Page Glossary–6 Company Confidential 9238460 (Issue 1)