Intermec IM11 Quick setup guide

IM11
RFID Reader Module
Integration Guide

ii IM11 RFID Reader Module Integration Guide (Confidential)
Intermec Technologies Corporation
Worldwide Headquyarters
6001 36th Ave.W.
Everett, WA 98203
U.S.A.
www.intermec.com
The information contained herein is provided solely for the purpose of allowing customers to
operate and service Intermec-manufactured equipment and is not to be released, reproduced, or
used for any other purpose without written permission of Intermec Technologies Corporation.
Information and specifications contained in this document are subject to change without prior
notice and do not represent a commitment on the part of Intermec Technologies Corporation.
© 2013 by Intermec Technologies Corporation. All rights reserved.
The word Intermec, the Intermec logo, Norand, ArciTech, Beverage Routebook, CrossBar,
dcBrowser, Duratherm, EasyADC, EasyCoder, EasySet, Fingerprint, i-gistics, INCA (under license),
Intellitag, Intellitag Gen2, JANUS, LabelShop, MobileLAN, Picolink, Ready-to-Work, RoutePower,
Sabre, ScanPlus, ShopScan, Smart Mobile Computing, SmartSystems, TE 2000, Trakker Antares,
and Vista Powered are either trademarks or registered trademarks of Intermec Technologies
Corporation.
There are U.S. and foreign patents as well as U.S. and foreign patents pending.

Contents
IM11 RFID Reader Module Integration Guide (Confidential) iii
Contents
Before You Begin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Global Services and Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Warranty Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Web Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Send Feedback. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Telephone Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Who Should Read This Manl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Patent Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Electromagnetic Compatibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Radio Frequency Device Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Recycling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Restriction of Hazardous Substances (RoHS) Directive. . . . . . . . . . . . . viii
About the IM11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Technical Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
EPC Compliance and Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Mechanical Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
About the Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Supported Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Reader Power States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Reader Power Draw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Mini-PCI Connector Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Input and Output Voltage Level Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Transmit Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
RF Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Software Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
About the Development Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Connect the Development Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Open a Serial Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Contents
iv IM11 RFID Reader Module Integration Guide (Confidential)
Open a USB Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Problems While Working with RFID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Restore Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
DIP Switch Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Before You Begin
IM11 RFID Reader Module Integration Guide (Confidential) v
Before You Begin
This section provides you with safety information, technical support
information, and sources for additional product information.
Safety Information
Your safety is extremely important. Read and follow all warnings and
cautions in this document before handling and operating Intermec
equipment. You can be seriously injured, and equipment and data can
be damaged if you do not follow the safety warnings and cautions.
This section explains how to identify and understand warnings,
cautions, and notes that are in this document. You may also see icons
that tell you when to follow ESD procedures.
Global Services and Support
Warranty Information
To understand the warranty for your Intermec product, read the
Intermec supply agreement.
A warning alerts you of an operating procedure, practice,
condition, or statement that must be strictly observed to avoid
death or serious injury to the persons working on the equipment.
A caution alerts you to an operating procedure, practice,
condition, or statement that must be strictly observed to prevent
equipment damage or destruction, or corruption or loss of data.
Note: Notes either provide extra information about a topic or contain
special instructions for handling a particular condition or set of
circumstances.

Before You Begin
vi IM11 RFID Reader Module Integration Guide (Confidential)
Disclaimer of warranties: The sample code included in this document
is presented for reference only. The code does not necessarily
represent complete, tested programs. The code is provided “as is with
all faults.” All warranties are expressly disclaimed, including the
implied warranties of merchantability and fitness for a particular
purpose.
Web Support
Visit the Intermec website at www.intermec.com to download our
current manls (in PDF).
Visit the Intermec technical knowledge base (Knowledge Central) at
www.intermec.com and click Support > Knowledge Central to
review technical information or to request technical support for your
Intermec product.
Send Feedback
Your feedback is crucial to the continl improvement of our
documentation. To provide feedback about this manl, please contact
the Intermec Technical Communications department directly at
T[email protected].
Telephone Support
Contact your local Intermec OEM Sales Representative:
•NA/SA OEM Sales: [phone]
•EMEA OEM Sales: [phone]
•Asia Pacific OEM Sales: [phone]
•Taiwan OEM Sales: [phone]
Who Should Read This Manl
This integration guide explains how to integrate the IM11 module
into a computer or other device. It is written for the person who will
be integrating the module into any product that needs to be UHF
RFID-enabled.
Before you install and configure the module, you should be familiar
with Intermec RFID systems and how to implement them. You
should also be familiar with your network and general networking
terms, such as IP address.

Before You Begin
IM11 RFID Reader Module Integration Guide (Confidential) vii
Related Documents
This is a list of related Intermec documents:
•Basic Reader Interface Programmer Reference Manual
•Intermec RFID System Manual
The Intermec website at www.intermec.com contains our documents
(as PDF files) that you can download for free.
To download documents
1Visit the Intermec website at www.intermec.com.
2Click the Products tab.
3Using the Products menu, navigate to your product page. For
example, to find the 70 Series RFID Computer product page, click
Computers > Handheld Computers >70 Series RFID
Computers.
4Click the Manls tab.
If your product does not have its own product page, click Support >
Manls. Use the Product Category, the Product Family, and Product
to find your documentation.
Patent Information
There may be U.S. and foreign patents pending.
Regulatory Information
Note: Regulatory compliance of the end product is the responsibility
of the module integrator. Upon request, Intermec will provide
proprietary module documentation using non-disclosure agreements
(NDAs) or directly to the certifying agency.

Before You Begin
viii IM11 RFID Reader Module Integration Guide (Confidential)
Safety
The module is tested and compliant according to:
•CB Report IEC 60950-01 for international product safety
•FCC OET Bulletin 65, Evaluating Compliance with FCC Guidelines for
Human Exposure to Radio Frequency Electromagnetic Fields, for general
population/uncontrolled exposure when installed per Intermec
instructions using Intermec-approved antennas
•CENELEC EN50364/EN50357, European RF Exposure standard
Electromagnetic Compatibility
This module is certified according to:
•FCC Part 15/Industry Canada ICES-003 Class B digital emissions
•EN 301 489-1 and -3, European transmitter immunity
Radio Frequency Device Approval
By default, the module is configured for FCC transmission.
•EN 302-208 V 1.4.1 Declaration of Conformity
•FCC Part 15.247 (915 MHz band operation) Certification
•RSS-210 (915 MHz band operation) Certification
Recycling
The module incorporates principles for ease of disassembly to
facilitate recovery and recycling of printed circuit board assemblies
and base materials.
Restriction of Hazardous Substances (RoHS) Directive
The module complies with the RoHS Directive.

IM11 RFID Reader Module Integration Guide (Confidential) 9
About the IM11
The Intermec IM11 RFID Reader Module is designed for quick
integration into computers, printers, and any other products that
need to be RFID-enabled. The IM11 includes these features:
•Allows the RFID-enabled product to read and write to tags used in
most worldwide applications:
•The IM11 can comply with the regulatory requirements for
ETSI 4 channels in Europe, USA, Taiwan, Australia, Thailand,
Brazil, Hong Kong, Malaysia, Singapore, China, Philippines,
South Africa,Israel, South Korea, and New Zealand. For the
latest, contact your Intermec sales representative.
•The IM11 cannot comply with regulatory requirements for
Japan.
•Operates across the entire frequency band. The country code
defines the frequency bands of operation, the power levels, the hop
tables, and other country-specific parameters. The default country
code is defined by the location where the module is delivered.
•Covers UHF bands from 865 to 928 MHz. Supports four channel
operation over the 865 to 868 MHz band.
•Supports 50 channels in the FCC band from 902 to 928 MHz.
•Supports the ISO 18000-6c protocol (EPC Class 1, Gen 2)
•Supports the BRI (Basic Reader Interface) host communication
protocol.

10 IM11 RFID Reader Module Integration Guide (Confidential)
Technical Overview
Specifications
Physical Specifications
Specification Values
Physical 50.95 mm long x 30 mm wide x 4.76 mm thick
Weight
Environmental Specifications
Specification Values
Operating
Temperature
-20 °C to +60 °C
Storage
Temperature
-40 °C to +70 °C
Humidity 25 °C to 60 °C, 0% to 95% relative humidity,
non-condensing process
Shock 2000 g, 0.5 ms pulse, 10 times on each axis
Vibration GRMS. 10 to 500 Hz, in 3 axis
ESD Passes CE mark requirements. 4 kV contact discharge and 8
kV air discharge, while unpowered.
Power Supply Specifications
Specification Minimum Typical Maximum Unit Notes
Operating
Voltage
3.15 3.8 5.2 V All internal voltages
regulated on
module
Deep Sleep 100 μA Vbatt current when
enable low powers
Real-Time Clock
Standby
Current
30 mA At 3.8 V, USB
connection in
Suspend mode, no
GPIO loading

IM11 RFID Reader Module Integration Guide (Confidential) 11
Read Current 1.3 A Tx/Rx circuits,
VCO, temperature
sense
Ripple 100 mV Peak-to-peak
Timing
•Power on
to Enable
•Enable to
Active
5 S Only at initial
power up
•Standby to
Active
1.5 2 mS An internal time,
not seen by the host
•Channel
Switching
30 μS Tx on a channel to
Tx on any other
channel
Transmitter Specifications
Specification Minimum Typical Maximum Unit Notes
Frequency
Stability
-20 +20 PPM
Spurious
Emissions -
FCC
-55
-50
dBc
dBc
In band
Out of band
Spurious
Emissions -
ETSI
-54 dBm Out of band
Thermal
Shutdown
85 °C As measured by
sensor on module
Thermal
Recovery
75 °C
Transceiver Specifications
Specification Values
Output Power Control 29.5 dBm. User adjustable in 1 dBm down to
10.5 dBm. Tolerance drift from +0.5 to -0.7.
Power Supply Specifications (continued)
Specification Minimum Typical Maximum Unit Notes

12 IM11 RFID Reader Module Integration Guide (Confidential)
Bus Interface (USB or serial) USB 2.0 compliant client 12 Mbps (full speed)
Serial 115.2 Kbps
RF Output Impedance 50 Ohms with better than 10 dB return loss
Modulation PR-ASK
Data Encoding DRM or FM0
RF Sensitivity DRM: Monostatic 15 dB S/N Power [dBm]
ON: -70 dBm
RF sensitivity is the minimum RF conducted
power for measuring a given 15 dB return loss
on the antenna port.
Tags/Protocols Supported EPC Class 1 Gen 2, UHF Version 1.2.0
ISO 18000-6C
NXP SL3ICS1002 G2XM, can read 512-bit
extended user memory and custom
commands
Fujitsu FJ64 Kb
Impinj Monza 4QT
Tag Data Rate EPC Class 1 Gen2, ISO 18000-6C
DRM back link frequency up to 320 KHz
FM0 back link frequency 160 KHz
Read Range >6 m (20 ft), provided that the module:
•is using DRM operation mode.
•isconnected to an antenna system with 9
dBiC gain (circular polarized).
•has no occurrence of multipath or other
environmental interference.
Read Speed >200 tags per second (using 32 conducted
tags)
50 tags per second (using over air tags)
Performance Testing AD 223 tags on cardboard
Transceiver Specifications (continued)
Specification Values

IM11 RFID Reader Module Integration Guide (Confidential) 13
EPC Compliance and Certification
The module is compliant to:
•EPCglobal® RFID Air Interface Specification, Version 1.0.8.
•Single Reader Mode: Operates in an EPC Class 1 Gen 2 single
interrogator environment.
•Multiple Reader Mode: Operates in an EPC Class 1 Gen 2 multiple
interrogator environment.
•Dense Reader Mode: Operates in an EPC Class 1 Gen 2 dense
interrogator environment. May require reducing power output to
27 dBm to meet EPC DRM guidelines.
Receiver Specifications
Receiver Input Values
Sensitivity Typical: -70 dBm
15 dB return loss
Maximum Reverse Input Power Maximum: +20 dBm

14 IM11 RFID Reader Module Integration Guide (Confidential)
Mechanical Integration
The module fits within the MiniPCI Express specifications. For
physical dimensions, see the illustration.
IM11 RFID Reader Module Physical Specifications: 50.95 mm long x 30 mm
wide x 4.78 mm thick. Exceptions to the MiniPCI Express form factor: top shield
side thickness is 2.4 mm (instead of 2.01 mm) and bottom shield side thickness
is 1.35 mm (instead of 1.75 mm).
2.6 (2 places)
4.78
30.00
45.84
14.40
24.20
50.95
44.94
2.40
1.35

IM11 RFID Reader Module Integration Guide (Confidential) 15
About the Connectors
The module mounts on a PC board and connects to it using a mini-
PCI connector, P/N JAE MM60-52B1-E1 or equivalent. Intermec
recommends using the higher profile connector, because the low
profile connector does not fit flush to the PCB with the low profile
connection.
The antenna receptacle is a Hirose U.FL connector (50 ohm, coaxial).
Supported Antennas
The module has been tested to work with a variety of antenna types.
Antenna systems, combination antenna and cables, are restricted to
+6 dBi linear gain in North, Central, and South America. Europe have
a maximum antenna system gain restriction of 2 Watt effective
radiated power.
Radio communications regulatory agencies in each country has
restrictions for antenna gain or transmitter power. Consult with your
Intermec OEM Sales Representative or Professional Wireless /RFID
Installer for details.
These antennas are approved to work with the IM11:
•Antenna primary linear (0 dBi linear, omni)
•PIFA omni yagi (5.5 dBi linear)
•Ceramic patch antenna (2.5 dBi, circular polarized)
•Cross polar linear (dual pole antenna)
•High gain circular polarized panel 11 dBiC (8 dBi linear)
•High gain linear panel (8 dBi)
•RFID printer coupler (-30 dBi)
•NeWave N7 (5.5 dBi, multi axis dipole)
You can use any antenna with similar construction to one of the
approved antennas, as long as it has equal or less gain. The module
integrator is responsible for final regulatory approvals.
Note: To use the 8 dBi antennas, the module integrator needs to
reduce the output power to 29 dBm.

16 IM11 RFID Reader Module Integration Guide (Confidential)
Operating Modes
This illustration shows the module Overtemperature and Standard
operating modes.
The module has a temperature sensor. If overtemperature is detected
(nominally 85 °C), the module sends an overtemperature message. No
RF output occurs until the temperature falls below the recovery
threshold (nominally 75 °C).
Overtemperature Mode Standard Mode
IM11 is in Idle mode.
IM11 receives
a request for a tag
operation from an
application.
Is the IM11
temperature
<85 °C?
The IM11's ability to return
to normal status depends
on the ability of the card to
dissipate the heat.
The IM11 is designed to
operate at 1 Watt of
continuous power between
-20 °C and +60 °C. These
limits are not user
programmable.
IM11 API returns
“Status=Normal"
and data, if found.
Application checks reason
for failed status and returns
overtemperature condition.
IM11 API returns
"Status=Failed."
IM11 receives
a request for a tag
operation from an
application
No
No
Yes
Yes

IM11 RFID Reader Module Integration Guide (Confidential) 17
In most situations, Overtemperature mode adequately protects the
module against very high temperatures. However, if you use the
module in a high duty-cycle operation for extended periods of time at
elevated temperatures, you may want to attach a heatsink to the
perforated top shield of the IM11. For proper placement, refer to the
illustration of the page 14
For optimal thermal performance, connect the top shield of the
module to a metal surface with good air flow or access to the lower
temperature case exterior. To connect these surfaces, use a low
thermal resistance material, such as themal grease or a thermally-
conductive spacer.
Electrical Integration
The module communicates either over USB or through serial:
•The USB client communication follows the CDC profile (a
Microsoft standard driver) and is USB 2.0-compliant, operating at
12 Mbps (full speed). For more information, see “Open a USB
Connection” on page 32.
•In Serial mode, the module communicates as a standard PC COM
port, operating at 115.2 Kbps. It has eight general purpose inputs
and outputs for monitoring and controlling external signals. For
more information, see “Open a Serial Connection” on page 31.
A Digital Signal Processor (DSP) controls the radio functions and
provides communication with the host. This interface allows direct
reprogramming and updating of the on-board FLASH memory. It has
64 MB of DDR and 4 MB of SPI FLASH available.
Power Requirements
The module operates off power input from 3.15 VDC to 5.2 VDC. If
the input is 3.3 V DC or less, you must account for significant
increased current demand. If the input drops below 3.15 VDC, 1 Watt
output is not possible.

18 IM11 RFID Reader Module Integration Guide (Confidential)
The module handles its own power management and goes into
Standby mode automatically when there are no outstanding
commands. However, even in Standby mode, the IM11 immediately
responds to host activity, eliminating any potential host timeout
conditions.
To achieve an even lower power Standby mode, the host needs to
support USB suspend and remote wakeup.
To reduce power, the module duty cycles its transmitter. The duty
cycling happens according to the read commands that the application
executes. To achieve the lowest power, after all tags are read, the
transmitter turns off. After a period of time, the transmitter activates
to identify new tags in the field. After all new tags are read, the
transmitter turns off for the rest of the period.
Also, the module automatically reduces the power out if the input
voltage is too low or the temperature of the module is too high.
For more information about low power read commands, see the Basic
Reader Interface Programmer Reference Manual.
Reader Power States
There are four different power states for the RFID module.
Reader Power States and Levels of Consumption
Power State Level of Consumption
Off 0 (3.3 V turned off to the module)
Deep Sleep •3.3 V on
•RF enable = Off
•< 1 mA
•Real Time Clock (RTC) = On (< 100 μA to power RTC)*
•Enable (Pin 20) is low
Idle •3.3 V on
•RF enable = On
•No USB activity
•About 35 mA
•Enable (Pin 20) is high
Read Max current during tag read about 1.5 A

IM11 RFID Reader Module Integration Guide (Confidential) 19
* You cannot turn off the RTC unless you remove power Pin 2
(VBATT) on the mini-PCI connector.
* < 6 ms required to load the software to load the module. After loading the
software, the module stays idle (~110 mW) until a read is requested. When a
read is finished, the unit returns to idle. Duty cycling is employed to quiet
tags that have already been read and to ensure the host system transmitter
does not stay on all the time.
Reader Power Draw
This section explains the power draw of the IM11 under various
operating conditions. These are the four tests that were conducted:
•Test A: READ REPORT=EVENT: This test uses default values
and starts a continuous read. It takes advantage of the duty cycle
to save power, and resets the tags after every inventory round so
the tags keep responding.
•Test B: ATTRIB UNSELTRIES=0, READ REPORT=EVENT:
This test uses the default values of the reader except for
UNSELTRIES. The continues read takes advantage of the duty
cycle to save power. Setting UNSELTRIES=0 prevents the reader
from resetting the tags. After the initial inventory round, the tags
remain quiet until session 2 persistence wears off. This is the
recommended configuration for reading large tag populations in
continuous mode.
Transition Times Between Reader Power States
Transition State Transition Time
Off to Deep Sleep 100 ms
Deep Sleep to Tag Read < 6 ms*
Idle to Tag Read •Time for USB device to respond to USB
wakeup is about 10 ms.
•Time for serial to respond is about 100 ms for a
10 byte command will take 100 ms at 115.2
kbps.

20 IM11 RFID Reader Module Integration Guide (Confidential)
•Test C: Repeated READ: This test uses the default values of the
reader and repeatedly issues a single READ command, and does
not allow the reader to duty cycle the radio. The tags are reset at
the beginning of every inventory round so they can respond to
every read command.
•Test D: ATTRIB UNSELTRIES=0, Repeated READ: This test is
the same as Test C, but UNSELTRIES is set to 0. The tags respond
the first time and then only responds when their persistences
wears off.
Supply Voltage 3.35 V
Conducted Quad Tag, 20 dB Antennuation
Field Strength Test A Test B Test C Test D
30 dB 153 72 536 354
27 dB 124 65 420 296
24 dB 110 61 348 260
21 dB 96 59 302 234
18 dB 60 57 272 220
15 dB 55 56 251 217
Supply Voltage 3.35 V
Radiated,50 Tags Cardboard Box in Front of Antenna
Field Strength Test A Test B Test C Test D
30 dB 490 124 950 378
27 dB 290 96 616 303
24 dB 182 74 451 265
21 dB 110 64 337 238
18 dB 83 58 266 222
15 dB 79 58 264 220