NXP Austria ICODE-SLEV900 RFID Tag User Manual FCC Statement of compliance

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Document ID	89224
Application ID	94cSMm7nJximWkQrHDZrlQ==
Document Description	FCC Statement of compliance
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	9.12kB (114012 bits)
Date Submitted	2000-03-03 00:00:00
Date Available	2000-07-10 00:00:00
Creation Date	0000-00-00 00:00:00
Producing Software	Acrobat PDFWriter 3.02 für Windows
Document Lastmod	2000-03-03 10:06:28
Document Title	FCC Statement of compliance

Author: Franz Amtmann |.Code
PHllIPS
Date: 1999-06-22 summary of RF Transmission
Passive inductive systems are used for identification of persons and items.
l-Code is designed especially for the following applications : baggage identification ( for example at
the airport ), parcel services, retail ( barcode replacement ), access control....
I°CODE
TM
Label
I°CODETM Reader
Module
Figl) Basic Principe of the I-Code system
Figure 1 shows the basic Principle of the l-Ccde System, which is the same as for all passive
transponder systems. l
The reader module is inductivé‘coupled with one or more passive transponder. The reader module
generates a 13.56 MHz magnetic field which induces a voltage in the tag resonant circuit for
powering of the tag..
Nearly all the power is concentrated in the nearfield, the radiated power is much less ( <<10mW ).
Data is transmitted to the tag by a 10% ASK modulation of this carrier. This data contains the
command ( read, write... ) and optional data which is stored in a EEPROM in the tag.
The passive tag responds by changing the load of the field. This change is very low, so the re-
radiated signal from the tag is very low ( much below spurious emission limits ).
The reader is controlled over a R5232 from an external host computer.
SENTON GmbH
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24V
Filter and
Power supply
Demodulalor
and Amplifier
mrmalm
1. MHZ
Anlenna
Coupling
Circuit
50 Ohm
Micv
Controller
Unit
RF
Power stage
Host
Computer
Figi24) block diagram of the reader
Fig.2.) gives a short overview of the internal blocks of the readers In a 1356 MHz crystal oscillator
a 13.56 MHz signal is generated and modulated in the modulator block, which is controlled from
the microcontroller unit
The RF Power stage amplifies and filters this signal. This filtered signal is supplied with a 50 Ohm
cable to the tuned antenna.
The passive tag receives this signal, rectifies the carrier for generating the supply voltage,
demodulates the signal and if a valid command is detected responds to the reader by using a load
modulation technique. which is a small change of the reader field
This re-radiated signal is received from the reader antenna, fitted via the 50 Ohm cable to the
reader, filtered, demodulated and amplified After an Analogue to Digital conversion this signal is
processed in the microcontroller unit
FCC Compliance Statement:
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1) This device may not cause harmful interference and
2) This device must accept any interference received, including interference that may cause
undesired operation.
Information to the user:
Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
SENTON Gmbl'l
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pcsthdochA Confidential Information Page 2/2

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Create Date                     : Donnerstag, 2. März 2000 16:16
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Modify Date                     : 2000:03:03 10:06:28
Page Count                      : 2

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