caenrfid Easy2log A927ZET Technical document

A927ZET
UHF Semi-Passive Logger Tag with external probe
Technical Information Manual
Revision n. 02
27/03/2013

Scope of Manual
The goal of this manual is to provide the basic information to work with the A927ZET UHF Semi-Passive Logger Tag with
external probe.
Change Document Record
Date
Revision
Changes
Pages
04 Mar 2011
01
Initial release.
-
27 Mar 2013
02
Removed information about A927ZH Humidity logger UHF semi-
passive tag
7
Added information on CAEN RFID Development Kit
7
Changed A927ZET photo
1, 7
Modified § General Information paragraph
7
Modified Ordering Options
8
Modified § Tab. 4.1: A927ZET Technical Specifications
37
Added EN 12830 Declaration of Conformity
44
Added warning
37
Symbols, abbreviated terms and notation
DR
Divide ratio
FT
Frequency tolerance
TRcal
Tag-to-Interrogator calibration symbol
XXXXb
Binary notation
XXXXh
Hexadecimal notation
Tari
Reference time interval for a data-0 in Interrogator-to-Tag signaling. The mnemonic “Tari” derives from the ISO/IEC
18000-6 (part A) specification, in which Tari is an abbreviation for Type A Reference Interval.
CRC
Cyclic Redundancy Check
RFID
Radio-Frequency IDentification
RFU
Reserved for Future Use
Word
16 bit
Reference Document
EPCglobal: EPC Radio-Frequency Identity Protocols Class-1 Generation-2 UHF RFID Protocol for
Communications at 860 MHz –960 MHz, Version 1.2.0 (October 23, 2008).
G.S.D. s.r.l. - Report CE mark –A927Z - Temperature logger UHF semi-passive tag - Test report n. 29346A
Rev.01 - 11 February 2010
A927Z EN12830 Test Report –1 March 2010
TesLab s.r.l. - Environmental Test Report - A927Z - Temperature logger UHF semi-passive tag -ref. TesLab
09B204A –10 December 2009

CAEN RFID srl,
Via Vetraia, 11 55049 Viareggio (LU) - ITALY
Tel. [phone] Fax [phone]
[email protected]
www.caenrfid.com
©CAEN RFID srl –2013
Disclaimer
No part of this manual may be reproduced in any form or by any means, electronic, mechanical, recording, or
otherwise, without the prior written permission of CAEN RFID.
The information contained herein has been carefully checked and is believed to be accurate; however, no responsibility
is assumed for inaccuracies. CAEN RFID reserves the right to modify its products specifications without giving any
notice; for up to date information please visit www.caenrfid.com.

Index…
Scope of Manual...........................................................................................................................................................................2
Change Document Record............................................................................................................................................................2
Symbols, abbreviated terms and notation ...................................................................................................................................2
Reference Document....................................................................................................................................................................2
Index…...........................................................................................................................................................................................4
List of Figures.................................................................................................................................................................................5
List of Tables..................................................................................................................................................................................5
1Introduction ........................................................................................................................................................................6
General Information.....................................................................................................................................................................7
Ordering Options..........................................................................................................................................................................8
Accessories ...................................................................................................................................................................................8
Installation Notice ........................................................................................................................................................................9
2A927ZET Functional Description ........................................................................................................................................10
Main Features.............................................................................................................................................................................11
Application.....................................................................................................................................................................11
Communication Protocol Features ................................................................................................................................11
Reading Performances...................................................................................................................................................12
On board Temperature Sensor ......................................................................................................................................12
Battery ...........................................................................................................................................................................12
Sampling operating Modes.........................................................................................................................................................13
Storing operating Modes............................................................................................................................................................14
Data Logging Area Allocation.........................................................................................................................................14
Battery measurement and behaviour ........................................................................................................................................15
3A927ZET Memory Description ...........................................................................................................................................16
Address space.............................................................................................................................................................................17
Reserved Memory ......................................................................................................................................................................19
EPC Memory...............................................................................................................................................................................19
EPC TAG Encoding..........................................................................................................................................................20
TID Memory................................................................................................................................................................................20
Company ID....................................................................................................................................................................20
SAM Pointer...................................................................................................................................................................21
A927ZET Firmware release (FW)....................................................................................................................................22
A927ZET Serial Number .................................................................................................................................................22
User Memory..............................................................................................................................................................................23
A927ZET NoS description...............................................................................................................................................25
A927ZET SAM Entry description ....................................................................................................................................25
A927ZET Sensor Characteristics Description..................................................................................................................26
Sensor Attribute/Type .......................................................................................................................................26
Resolution/Chemical Substance ........................................................................................................................26
Precision/Data Type ..........................................................................................................................................27
Offset.................................................................................................................................................................27
Low Limit ...........................................................................................................................................................27
High Limit ..........................................................................................................................................................28
A927ZET Sensor Configuration Description ...................................................................................................................29
Status.................................................................................................................................................................29
Control...............................................................................................................................................................30
Start Time ..........................................................................................................................................................31
Samples .............................................................................................................................................................31
Sample Time ......................................................................................................................................................32
High Threshold / Low Threshold........................................................................................................................32
Last Sampled Value ...........................................................................................................................................33
Last Sampled Address........................................................................................................................................33
A927ZET Data Logging area description ........................................................................................................................34
Registers use example ................................................................................................................................................................35
4A927ZET Specification ....................................................................................................................................................... 36
Technical Specifications Table ....................................................................................................................................................37
Air Link Protocol Characteristic ..................................................................................................................................................38
Physical Layer.................................................................................................................................................................38
Typical Characteristics ................................................................................................................................................................39
A927ZET Battery Life......................................................................................................................................................39
Response Time...............................................................................................................................................................39

A927ZET Technical Information Manual
5
Accuracy.........................................................................................................................................................................40
Theoretical read range...................................................................................................................................................40
5A927ZET Regulatory Compliance .......................................................................................................................................41
FCC Compliance..........................................................................................................................................................................42
CE Compliance............................................................................................................................................................................42
EN 12830 Compliance.................................................................................................................................................................42
Enclosure degree of protection ..................................................................................................................................................42
RoHS EU Directive.......................................................................................................................................................................42
CE Declaration of Conformity .....................................................................................................................................................43
EN 12830 Declaration of Conformity..........................................................................................................................................44
EN 12830 Compliance Matrix ........................................................................................................................................45
List of Figures
Fig. 1.1: A927ZET UHF Semi-Passive Logger Tag with external probe .....................................................................................................7
Fig. 1.2: A927Z UHF Semi-Passive Logger Tag..........................................................................................................................................7
Fig. 1.3: A927ZET Technical drawings......................................................................................................................................................9
Fig. 1.4: A927ZET External probe.............................................................................................................................................................9
Fig. 2.1: A927ZET Sampling Operating Modes.......................................................................................................................................13
Fig. 3.1: A927ZET High/Low Threshold monitoring ...............................................................................................................................33
Fig. 4.1: A927ZET Battery life (typ.) .......................................................................................................................................................39
Fig. 4.2: A927ZET Response Time ..........................................................................................................................................................39
Fig. 4.3: Temperature error vs Temperature.........................................................................................................................................40
Fig. 4.4: Accuracy at 25°C ......................................................................................................................................................................40
Fig. 4.5: A927ZET Theoretical read range at 2W ERP.............................................................................................................................40
List of Tables
Tab. 2.1: Sampling Operating Modes ....................................................................................................................................................13
Tab. 2.2: Storing Operating Modes........................................................................................................................................................14
Tab. 2.3: Data Logging Area Allocation in the different storing modes .................................................................................................14
Tab. 3.1: Memory banks........................................................................................................................................................................17
Tab. 3.2: Memory Bank Configuration...................................................................................................................................................18
Tab. 3.3: Bank 00 –Reserved Memory ..................................................................................................................................................19
Tab. 3.4: Bank 01 –EPC Memory...........................................................................................................................................................19
Tab. 3.5: Bank 10 –TID Memory ...........................................................................................................................................................20
Tab. 3.6: SAM Pointer and SAM Entry link chain ...................................................................................................................................21
Tab. 3.7: Bank 11 –USER Memory ........................................................................................................................................................24
Tab. 3.8: Temperature data format.......................................................................................................................................................34
Tab. 3.9: Battery data format ................................................................................................................................................................34
Tab. 4.1: A927ZET Technical Specifications ...........................................................................................................................................37

A927ZET Technical Information Manual
6
1Introduction
This Chapter gives general information about the A927ZET UHF Semi-Passive Logger Tag. It
contains these topics:
General Information
Ordering
Accessories
Installation Notice

A927ZET Technical Information Manual
7
General Information
CAEN RFID easy2log©A927ZET is a low cost, semi-passive UHF Logger tag that allows to monitor temperature sensitive
products like perishable foods and pharmaceuticals, during transportation and storage.
The combination of the high resolution sensor, the large memory size and the standard RFID interface permits to
realize effective track and trace solutions for the cold-chain.
The A927ZET can be used with standard UHF RFID readers available on the market without requiring any additional
equipment thanks to its compatibility with the EPCGlobal C1G2 and ISO18000-6C standards.
The tag has both an internal and an external temperature sensor, each one can be configured to store temperature
samples in intervals from 8 second to 18 hours in the internal memory that can contain up to 4,096 samples per sensor.
For each sensor the user can define alarms for high and low temperature thresholds for an accurate control of the
temperature excursions.
The rugged enclosure of this logger make it the perfect choice for the cold-chain monitoring in harsh environment or in
presence of strong vibration while the external sensor probe allows to monitor the internal and the external
temperature of a box.
The A927ZET RFID logger can be used for multiple shipments thanks to the long battery life and the reset function thus
allowing to reduce the total cost of the solution and anticipate the ROI.
Fig. 1.1: A927ZET UHF Semi-Passive Logger Tag with external probe
In addition to the A927ZET, the easy2log©family also includes:
Mod. A927Z, a semipassive tag of the easy2log©Family, for single temperature measurement (Fig. 1.2).
Fig. 1.2: A927Z UHF Semi-Passive Logger Tag
The A927Z tag is included in all our RFID Reader Development Kits.
RFID Reader Development Kits allow to get acquainted with reader performances, from simple testing of RFID features
to full implementation of middleware and custom applications.
These Kits include Reader, Antenna, Tags, Software, Documentation and Cabling. Everything you need to get started on
UHF RFID.
Click here for more info on RFID Reader Development Kits.

A927ZET Technical Information Manual
8
Ordering Options
Code
Description
Tag
WA927ZETAAAA
A927ZET - Temperature logger with external probe UHF semi-passive
tag (EPC C1G2) Std
WA927ZAAAAAA
A927Z - Temperature logger UHF semi-passive tag (EPC C1G2) Std
Development
Kit
WR4300PDKAAA
R4300 ION Demo KIT
WR4300PDKGPR
R4300 GPRS ION KIT
WA828BTXKITA
A828BT - Bundle KIT ETSI Version
WR1260IDKAAA
WR1260I Slate KIT
WR1230CBDKEU
R1230CBDK - Development kit with Quark reader, antenna, tags
WA941DKEUXAA
A941DKEU - Development kit with A941 ETSI IP65 reader, antenna,
cable, demo software and demo tags
WA941DKUSXAA
A941DKUS - Development kit with A941 FCC IP65 reader, antenna,
cable, demo software and demo tags
WA528DKEUXAA
A528DKEU - Development kit with A528 reader, antenna, cable, demo
software and demo tags (ETSI)
WA528DKUSXAA
A528DKUS - Development kit with A528 reader, antenna, cable, demo
software and demo tags (FCC)
Accessories
Check for the supplied accessories below:
No. 2 small screws

A927ZET Technical Information Manual
9
Installation Notice
The A927ZET can be easily fixed using the 2 screws supplied. All measurements are in mm.
Fig. 1.3: A927ZET Technical drawings
Fig. 1.4: A927ZET External probe

A927ZET Technical Information Manual
10
2A927ZET
Functional Description
This Chapter introduces the A927ZET UHF Semi-Passive Logger Tag. It contains these topics:
Main Features
Sampling operating Modes
Storing operating Modes
Battery measurement and behaviour