CWT Compact S2 Installation & Maintenance Manual

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Terminology

Term	Meaning
AVR	The AVR is an 8-bit RISC single chip micro controller. The AVR uses on-chip flash memory for program storage. See more about AVR updates in the CWT Software Configuration Handbook.
WebOffice	an internet based back office system from Flowbird
CWT	Common term for all Cale WebTerminal models (CWT 2110, CWT 2115, CWT 2120, CWT Compact Classic, CWT 104, CWT 104 S, CWT Compact all models).
	A CWT Compact terminal with a
ESD	Electro Static Discharge
Firmware	Firmware is a computer program that is embedded in a hardware device, for example a micro controller. Firmware is somewhere between hardware and software. Like software, it is a computer program which is executed by a computer. But it is also an intimate and vital part of a piece of hardware and has little meaning outside of that particular hardware.
GPRS	General Packet Radio Service is a mobile data service available to users of GSM (see below) based mobile phones and modems. GPRS is packet-switched meaning that multiple users share the same transmission channel, only transmitting when they have data to send. Thus, the total available bandwidth can be immediately dedicated to users who are actually sending at any given moment, providing higher utilization where users only send or receive data intermittently. Usually, GPRS data are billed per kilobytes of information transferred.
GSM	The Global System for Mobile communications is the most popular standard for mobile phones in the world. It includes packet data capabilities by means of GPRS (see above).
LAN	Local Area Network
Magstripe	Short for Magnetic stripe
PCB	Printed Circuit Board – A thin board with electrical wires "printed" onto the board, connecting the central processor to other components on the board. Some examples of PCBs include motherboards, RAM chips, and network interface cards.
RFID	Radio Frequency Identification – An automatic identification method, relying on storing and remotely retrieving data using devices called RFID tags or transponders. An RFID tag is an object that can be applied to or incorporated into a product, animal, or person for the purpose of identification using radio waves. Most RFID tags contain at least two parts. One is an integrated circuit for storing and processing information, modulating and demodulating an RF signal. The second is an antenna for receiving and transmitting the signal.
Residual-current device (RCD)	Also known as a ground fault circuit interrupter (GFCI), ground fault interrupter (GFI) or an appliance leakage current interrupter (ALCI). In Australia, they are sometimes known as "safety switches". The device disconnects a circuit whenever it detects that the electric current is not balanced between the live and the neutral conductors. Such an imbalance is sometimes caused by current leakage through the body of a person who is grounded and accidentally touching the energized part of the circuit.
TFT	TFT-LCD (Thin Film Transistor-Liquid Crystal Display) is a variant of Liquid Crystal Display (LCD) which uses Thin-Film Transistor (TFT) technology to improve image quality. TFT LCD is one type of active matrix LCD, though it is usually synonymous with LCD.
Wi-Fi	Short for Wireless Fidelity, a wireless technology brand owned by the Wi-Fi Alliance intended to improve the interoperability of wireless local area network products based on the IEEE 802.11 standards.