Intermec IM11 Integration Manual

IM

11

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.

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: +1-425-348-2762

• EMEA OEM Sales: +34-918-060-219

• Asia Pacific OEM Sales: +81-3-3769-5601

• Taiwan OEM Sales: +886-936-934-366

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

1 Visit the Intermec website at www.intermec.com.

2 Click the Products tab.

3 Using 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.

4 Click 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

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

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

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Intermec IM11 Integration Manual

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