PT40 Postal Tag RFID-LSCAN PT40 Postal Tag User Manual Version 3 – May 2012 Page: 1 of 6
PT40 Postal Tag RFID-LSCAN TABLE OF CONTENTS 1 2 INTRODUCTION 1.1 Purpose 3 1.2 Definitions 3 PT40 OPERATION DESCRIPTION 3 2.1 Modes of operation 3 2.2 Valid Excitation Fields 4 2.3 Commands and Parameters 4 2.4 PT40 vs. PT21 2.4.1 ExId range 2.4.2 Black-out 3 3 4 4 4 REGULATORY COMPLIANCE 5 3.1.1 3.1.
PT40 Postal Tag 1 1.1 RFID-LSCAN INTRODUCTION Purpose The purpose of this document is to describe the functionality and operation of the PT40 tag intended for use in a RFID system custom designed for International Post Corporation. The tag features reflect the application requirements. You can find more details into “PT40 Functional Specifications”. 1.2 Definitions Valid LF Field – A 125 kHz carrier signal modulated OOK with a signal carrying the exciting device identification number (ExID).
PT40 Postal Tag RFID-LSCAN In the sleep mode, only the LF receiver is powered up and the total current consumption is less than 5uA. When a LF signal is detected by the LF receiver, it wakes-up the microcontroller to check if this signal has a valid modulation pattern. The LF field validation is done by the microcontroller using an RC internal 90 kHz clock at a low current consumption.
PT40 Postal Tag 3 RFID-LSCAN REGULATORY COMPLIANCE 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. This equipment has been tested and found to comply with the limits for Class B digital devices, pursuant to Part 15 of the FCC Rules.
PT40 Postal Tag RFID-LSCAN can see as long as WEP = WIP+WRC > 3 and WSD ≥ 7 the duty cycle in any 100ms window varies between 8% and 16% so there is margin compared with the maximum value of 24%.
