User's Manual

Transponder Identification System
Introduction 1-1
Chapter 1
Introduction
This chapter describes Transponders and their functions, the purpose of the Postal RFID System
and its uses. It also gives information on the RFID System S21 configuration principles.
Transponder Identification System
The purpose of a data capture or identification system that uses a Transponder as an identification
token is:
• To automatically identify animate or inanimate objects having attached a Transponder with an
unique identifier
• To ensure that information is available in a format that can be readily accepted by a computer
• To minimize the possibility of errors in the identification process.
The concept of Radio Frequency Identification (RFID) is presented in Figure 1-1.
Figure 1-1: RFID Concept
Reading Point
Transponder
Rx
Tx
µ C
Tx
µ C
Rx
Downlink
Uplink
Interface
Interface
Main
PC