User Manual

PCI Express MiniCard Hardware Integration Guide
38 Proprietary and confidential 213XXXX
Acronym or term Definition
MP Mass Production – the finished product.
Newton Unit of force: 1 N = force required to accelerate 1 kg object 1 meter per second
per second. F = m x a. Force = mass x acceleration
Noise-canceling Active microphone with built in filtering. Better noise cancellation performance
than Uni-directional.
Omni-directional Microphone designed to receive audio input from every direction
OTA Over the Air or Radiated through the antenna.
OVP Over Voltage Protection
Pascal Unit of pressure: 1 Pa = 1 Newton of force applied over an area of 1 meter
squared
PCS Personal Communication System - PCS spans the 1.9GHz radio spectrum
PSD Product Specification Document
QCELP Qualcomm Code Excited Linear Predicator – a 13kbs codec compression
technique
QPCH Quick Paging Channel – IS2000 feature which increases standby time when
enabled
Reverse Pilot
Gating
IS2000 technique of reducing transmitter on time during conversation to
improve battery life.
RF Radio Frequency
RUIM Removable User Identity Module
Sensitivity (RF) Measure of lowest power signal that the receiver can measure
Sensitivity (Audio) Microphone performance specification – output voltage measured when the
microphone detects a given sound wave (1kHz) for fixed load conditions.
Measured in dBV/Pa.
Sidetone Feeding a fraction of transmit audio level into the receive path. This gives the
user some feedback that an audio link is established.
SIM Subscriber Identity Module
SOF Start of Frame - a USB function
UART Universal Asynchronous Receiver Transmitter
UDK Universal Development Kit
Uni-directional Microphone designed to receive audio input from a single direction. Effective in
passive reduction of background noise.
USB Universal Serial Bus
UVP Under Voltage Protection
VAF Voice Activity Factor - % time voice is active in a conversation (40% is typical).
VR Voice recognition
xIM Either RUIM or SIM, as the cards themselves are interchangeable