Intermec 869 RFID Reader Service Instructions Manual

Brand: Intermec

Model: 869 RFID Reader

Type: Service Instructions Manual

869 RFID

Reader

Service Instruction

Manual

ii 869 RFID Reader Service Instruction Manual

Intermec Technologies Corporation

Corporate Headquarters Technical Communications Depar tment

6001 36th Ave. W. 550 Second Street SE

Everett, WA 98203 Cedar Rapids, IA 52401

U.S.A. U.S.A.

www.intermec.com

The information contained herein is proprietary and 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.

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, CrossBar, Data Collection Browser, dcBrowser,

Duratherm,EasyCoder,EasyLAN,EnterpriseWirelessLAN,EZBuilder,Fingerprint,i-gistics,INCA(under

license), InterDriver, Intermec Printer Network Manager, IRL, JANUS, LabelShop, Mobile Framework,

MobileLAN, Nor*Ware, Pen*Key, Precision Print, PrintSet, RoutePower, TE 2000, Trakker Antares, UAP,

Universal Access Point, and Virtual Wedge are either trademarks or registered trademarks of Intermec

Technologies Corporation.

Throughout this manual, trademarked names may be used. Rather than p ut a trademark (™ or ®) symbol in

every occurrence of a trademarked name, we state that we are using the names only in an editorial fashion,

and to the benefit of the trademark owner, with no intention of infringement.

There are U.S. and foreign patents pending.

Wi-Fi is a registered certification mark of the Wi-Fi Alliance.

Microsoft, Windows, and the Windows logo are registered trademarks of Microsoft Corporation in the

United States and/or other countries.

Bluetooth is a trademark of Bluetooth SIG, Inc., U.S.A.

Contents

iii869 RFID Reader Service Instruction Manual

Contents

Before You Begin vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Do not repair or adjust alone vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

First aid vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Resuscitation vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Energized equipment vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Icons viii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Global Services and Support ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warranty Information ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Web Support ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Telephone Support ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Who Should Read this Manual? x. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Related Documents x. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Information 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Purpose of Equipment 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RFID Reader Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Receiver 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Antenna (RF) Connections 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Physical Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

869 MHz Specific 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Frequency Reference Source 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

915 MHz Specific 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Frequency Reference Source 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Transmitter 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents

iv 869 RFID Reader Service Instruction Manual

Theory of Operation 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Description 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reader Module 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

869 Serial Reader Module 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LED Indicators 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Connector 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

869 Reader Module Power Considerations 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Communication 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LED Plug 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13 Pin Female Circular DIN GPIO (General Purpose I/O) Connector 11. . . . . . . . . .

Digital Architecture 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Memory 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flash 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SDRAM 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SPI Serial Interface 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LATTICE ANTI-ALIASING FILTERS AND AMPLIFIERS 14. . . . . . . . . .

D/A CONVERTER 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RECONSTRUCTION FILTERS 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parallel I/O Peripherals 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A/D CONVERTER 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CPLD 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

UART 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RF Section 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Setup and Maintenance 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Set Up 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Procedures 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Notes 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Diagrams and Parts Lists 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disassembly 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the Barrel Connector Power Jack 26. . . . . . . . . . . . . . . . . . . . . . . .

Removing the Power Switch 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the Antenna End Plate 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assembly 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts List 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Before You Begin

iii869 RFID Reader Service Instruction Manual

Before You Begin

This section provides you with safety information, technical support inforĆ

mation, and sources for additional product information.

Safety Summary

Your safety is extremely important. Read and follow all warnings and cauĆ

tions in this document before handling and operating Intermec equipĆ

ment. You can be seriously injured, and equipment and data can be damĆ

aged if you do not follow the safety warnings and cautions.

Do not repair or adjust alone

Do not repair or adjust energized equipment alone under any circumĆ

stances. Someone capable of providing first aid must always be present for

your safety.

First aid

Always obtain first aid or medical attention immediately after an injury.

Never neglect an injury, no matter how slight it seems.

Resuscitation

Begin resuscitation immediately if someone is injured and stops breathing.

Any delay could result in death. To work on or near high voltage, you

should be familiar with approved industrial first aid methods.

Energized equipment

Never work on energized equipment unless authorized by a responsible

authority. Energized electrical equipment is dangerous. Electrical shock

from energized equipment can cause death. If you must perform authoĆ

rized emergency work on energized equipment, be sure that you comply

strictly with approved safety regulations.

Before You Begin

iv 869 RFID Reader Service Instruction Manual

Safety Icons

This section explains how to identify and understand dangers, warnings,

cautions, and notes that are in this manual. You may also see icons that tell

you when to follow ESD procedures and when to take special precautions

for handling optical parts.

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.

Avertissement: Un avertissement vous avertit d'une procédure de

fonctionnement, d'une méthode, d'un état ou d'un rapport qui doit être

strictement respecté pour éviter l'occurrence de mort ou de blessures graves

aux personnes manupulant l'équipement.

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.

Attention: Une précaution vous avertit d'une procédure de

fonctionnement, d'une méthode, d'un état ou d'un rapport qui doit être

strictement respecté pour empêcher l'endommagement ou la destruction

de l'équipement, ou l'altération ou la perte de données.

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

v869 RFID Reader Service Instruction Manual

Global Services and Support

Warranty Information

To understand the warranty for your Intermec product, visit the Intermec

web site at http://www.intermec.com and click Service & Support. The

Intermec Global Sales & Service page appears. From the Service & SupĆ

port menu, move your pointer over Support, and then click Warranty.

Disclaimer of warranties: The sample code included in this document is

presented for reference only. The code does not necessarily represent comĆ

plete, tested programs. The code is provided as is with all faults." All warĆ

ranties are expressly disclaimed, including the implied warranties of merĆ

chantability and fitness for a particular purpose.

Web Support

Visit the Intermec web site at http://www.intermec.com to download our

current manuals in PDF format. To order printed versions of the Intermec

manuals, contact your local Intermec representative or distributor.

Visit the Intermec technical knowledge base (Knowledge Central) at

http://intermec.custhelp.com to review technical information or to request

technical support for your Intermec product.

Telephone Support

These services are available from Intermec Technologies Corporation.

Service Description

In the U.S.A. and Canada

call 1Ć800Ć755Ć5505

and choose this option

Factory Repair and

OnĆsite Repair

Request a return authorization

number for authorized service

center repair, or request an

onĆsite repair technician.

Technical Support Get technical support on your

Intermec product.

Service Contract

Status

Inquire about an existing

contract, renew a contract, or ask

invoicing questions.

Schedule Site Surveys

or Installations

Schedule a site survey, or request

a product or system installation.

Ordering Products Talk to sales administration,

place an order, or check the

status of your order.

Outside the U.S.A. and Canada, contact your local Intermec representaĆ

tive. To search for your local representative, from the Intermec web site,

click Contact.

Before You Begin

vi 869 RFID Reader Service Instruction Manual

Who Should Read this Manual?

This manual contains information necessary to repair the 869 RFID ReadĆ

er. It provides an exploded view of the reader, the parts lists, and informaĆ

tion on testing the RFID reader with Intermec test equipment.

This manual is written for service technicians.

Related Documents

Document Title Part Number

869 RFID Reader Quick Start Guide 962Ć054-064

The Intermec web site at http://www.intermec.com contains many of our

documents that you can download in PDF format.

To order printed versions of the Intermec manuals, contact your local InĆ

termec representative or distributor.

Patent Information

Product is covered by one or more of the following patents:

4,455,523; 5,627,360; 4,553,081; 5,657,317; 4,709,202; 5,671,436;

4,845,419; 5,684,290; 4,961,043; 5,777,309; 5,195,183; 5,793,604;

5,216,233; 5,805,807; 5,218,187; 5,818,027; 5,218,188; 5,821,523;

5,227,614; 5,828,052; 5,241,488; 5,831,819; 5,278,487; 5,834,753;

5,322,991; 5,841,121; 5,331,136; 5,844,222; 5,331,580; 5,883,492;

5,349,678; 5,883,493; 5,397,885; 5,886,338; 5,371,858; 5,889,386;

5,373,478; 5,898,162; 5,410,141; 5,969,328; 5,488,575; 5,986,435;

5,500,516; 6,075,340; 5,504,367; 6,109,528; 5,508,599; 6,158,661;

5,530,619; 6,234,395; 5,567,925; 6,244,512; 5,568,645; 6,330,975;

5,592,512; 6,431,451; 5,598,007, 6,497,368; 5,617,343; 6,538,413.

There may be other U.S. and foreign patents pending.

General Information

This section of the manual explains the purpose of the reader, and contains

the mechanical and electrical specifications.

General InformationChapter —1

2 869 RFID Reader Service Instruction Manual

Introduction

This service instruction book (SIB) contains the theory of operation,

maintenance procedures, and diagrams and parts lists for the Intermec

869 RFID reader. The 869 Reader is shown below. Refer to the following

pages for the reader specifications.

Purpose of Equipment

The RFID Reader is suitable for applications such as security, pallet load

tracking and warehouse management.

869 MHz RFID Reader

Additional information about the reader, its capabilities, and how it is

setĆup and used can be found in the 869 Reader Quick Start Guide (PN

962Ć054Ć064).

General Information—Chapter 1

3869 RFID Reader Service Instruction Manual

RFID Reader Specifications

Receiver

S Protocol: Intellitag

S Receiver type: Homodyne I/Q

S Coding: FM0 from tag to reader

S Low Pass Frequency response of receiver I/Q outputs: 200/800 kHz

S Sensitivity: 5dB better than required to receive a beam powered tag

S Data Rates: 32 ć 40 kbps

S Alternate Data Rate : 128 ć 160 kbps

Transmitter

S Protocol: Intellitag

S Transmitter typeAmplitude modulation, OOK

S Coding Manchester: from reader to tag

S Secondarily emitted RF: < -54 dBm

S Standby to Tx 30 µS maximum

S Maximum phase noise @ 32 kHz: -75dBc/Hz or better

S Stability: <+/-30 ppm @25_C

S Attenuator control range: 20 dB

Antenna (RF) Connections

S Number of antennas: up to 4, electronically switched

S Switching rate: 30µS or less

S Antenna Port Isolation: 22 dB or better

S Required Antenna return loss: -14 dB

Physical Specifications

S Physical size: Reader: 8.25" x 5.30" x 2.90"

S Physical weight: Reader: 1.1 kg (38.4 oz.)

General InformationChapter —1

4 869 RFID Reader Service Instruction Manual

869 MHz Specific

Frequency Reference Source

S Source type: Fixed Channel Licensed

S Channel retention method: NVRAM

S Center frequency of channel: 869.525 MHz

S Usable channels: 1

S Channel spacing:Single Channel Operation

Transmitter

S Output Power minimum: 25.5 dBm

S typical: 26.5 dBm

S max: 27.0 dBm

S ModulationRaised Cosine, TBD

S Goal: Single Side-band

S Occupied frequency bandwidth: < 250 kHz

S Spurious emissions level: < - 37 dBm

S Data Rates: 32 ć 40 kbps

S Alternate Data Rates : 8 ć 12 kbps

915 MHz Specific

Frequency Reference Source

S Source type: Frequency hopper

S Frequency Band: 902-927.7MHz

S Usable Channels: 64

S Hopping rate: <= 100 mS

S Hopping time: 30µS within channel

Transmitter

S Output Power: minimum: 28.5 dBm

S typical: 29.5 dBm

S max: 30.0 dBm

S Modulation: 99%, 40 dB on/off

S Data Rates: 33 ć 40 kbps

Theory of Operation

This chapter of the manual outlines the theory of operation for the

Intermec 869 MHz RFID reader.

Theory of OperationChapter —2

6 869 RFID Reader Service Instruction Manual

1 General Description

The 869 reader provides basic tag identifies, reads and writes at both 869

& 915 MHz. The RF board supports 4 antenna ports simultaneously. The

DSP engine supports asynchronous serial communication using RS-232 to

connect to a host. The General Purpose Input/Output (GPIO) connector

allows the 869 reader to monitor and/or control external devices. This

would allow, for instance, a conveyer position switch to activate the reader

for tag operations.

The reader has an on/off power switch and is powered from an external

DC source. Four LED status indicators are located on the serial connector

side of the reader. It operates under 2 watts, so it is capable of continuous

operation.

The reader contains the manager function that provides communication to

the host. The host must support the command strings used by the managĆ

er.

In the 869 MHz band, the 869 reader utilizes the raised cosine modulation

envelope to reduce the bandwidth of the transmissions. Raised cosine

modulation is a digital filter, which programs the DSP to form a resultant

response. In this case, it has been programmed to respond according to

the harmonic content of the output waveform. This modulation is unique

and the bandwidth can best be described by:

Bandwidth = (1+α)/2Ts where

a = roll-off factor

Ts = one sampling time period

The net result from the raised cosine approach is that the output envelope

has a very low harmonic content, which dramatically reduces unwanted

harmonic and spurious energy in the output waveform.

The 869 reader also utilizes a pre-distortion filter. Pre-distortion was imĆ

plemented to the base band modulation envelope to compensate for non-

linearities in the mixer and power amplifier circuits. To meet the spectral

occupancy requirements for ERC/DEC/(01)04, it is essential to keep the

up-conversion and amplification of the data very linear. To accomplish

this, the output power was reduced to 500 mW, the driver kept out of

compression, and the dynamic range of the mixer was limited to increase

its resolution.

Pre-distortion also has the effect of reducing transmit harmonics and inĆ

creasing spectral containment. The pre-distortion was implemented by

re-mapping the values outputted by the DAC, to a discrete power level at

the transmitter's output, as opposed to a base band voltage level. This efĆ

fectively compensates for a non-linear transfer between the base band data

and the transmitted power level. The entire DAC range wasn't computed,

but only the points necessary to build the raised cosine filtered data stream.

Theory of Operation—Chapter 2

7869 RFID Reader Service Instruction Manual

Reader Module

The 869 reader module is comprised of the DSP engine, RF circuitry,

power regulation circuitry and other necessary components. The reader

module is constructed from a printed circuit board assembly, suitable RF

shielding, and incidental hardware. The 869 reader module is a sub-asĆ

sembly of the 869 Reader.

869 Serial Reader Module

An electrical block diagram of the reader module is shown in Figures 1 and

2. External connections may connect directly to the circuit card's connecĆ

tor, for items such as DC power, or RF signals, and the circuit board genĆ

erated/processes these signals. Additionally, it has external connectors for

data communications and GPIO signals.

Figure 1 Digital Section

Theory of OperationChapter —2

8 869 RFID Reader Service Instruction Manual

Figure 2: RF Section

Theory of Operation—Chapter 2

9869 RFID Reader Service Instruction Manual

LED Indicators

The indicators for the 869 Serial Reader are right angle panel-mount

LED's located on the 869 Reader module. Four LEDs (left to right)indiĆ

cate :

1 Power applied and processor active (on/off )

2 Serial data communications active

3 RF power on/off, and

4 Packet transaction from tag occurred.

In addition, a 6 pin header location is available to allow the LED signals to

be externally available.

Interface Connections - External Connectors for 869 Serial Readers

Connection Function Connector Description

Power Input power to energize reader 8-10 volts DC Power Connector

on RF Module

RF connectors Four RF connectors for external

antennas

Reverse SMA Connector on RF

Module

Serial Data

CommunicaĆ

tion

Serial Communications for sendĆ

ing/receiving RDID Data

DB9 Connector with RS-232

GPIO General Purpose Digital Inputs

and Outputs for triggering relay

drivers

Circular DIN 13 pin Connector

on RF Module; 4 Inputs, 4 OutĆ

puts, 4 Ground pins

LED Plug Provision for remote mounted

LEDs

6 pin 2 Row Right Angle ConĆ

nector

Theory of OperationChapter —2

10 869 RFID Reader Service Instruction Manual

Power Connector

The reader requires 8 to 10 volts DC at 2 amps.

The reader is powered through a 2-pin Bulkhead Barrel Connector,

Switchcraft part # 712A.

The Intermec power supply delivers 9 Volts DC at 2.4 Amps.

Mating plugs for this connector are Switchcraft part # 760, 760K or 761K.

A cable within the PSR connects the bulkhead barrel connector (via an

endplate switch) to the 2-pin Molex connector on the Intellitag Reader

Module.

869 Reader Module Power Considerations

The 869 Reader module uses the PSR case as a heat sink. The enclosure

used to house the modules provide sufficient thermal dissipation to keep

them within the specified operating temperature range.

The user must re-certify the product if the integration of the 869 Reader

Module uses a different power supply or antennas.

Antenna ports must have either antennas or termination loads connected

during operation. The Intermec part # for the termination load is

345-004-001.

Serial Communication

The 869 Serial Reader has a DB9 female connector for data communicaĆ

tion. The maximum data rate (and default) is 115.2K baud, with 8 data

bits, no parity bit and 1 stop bit.

The following table describes the pin-out of the RS-232 interface.

RS-232 Interface

Pinout Signal Direction Description

1 Reserved - Reserved

2 TXD (from reader) Output to host Serial data to host

3 RXD (from reader) Input from host Serial data from

host

4 Reserved - Reserved

5 GND N/A Ground

6 Reserved - Reserved

7 CTS (from reader) Input from host Clear to Send

8 RTS (from reader) Output to host Request to send

from host

9 Reserved - Reserved

The maximum distance from the product to a host, modem, or other

physical controller interface, such as a fiber optics converter or relay is

50-ft (15.2 m) for RS-232.

Theory of Operation—Chapter 2

11869 RFID Reader Service Instruction Manual

LED Plug

A board loading location is provided for a 6 pin right angle header to drive

the LED indicators remotely. A 5.0 Vdc 20mA drive circuit is available for

each indicator. The Intermec part number for the right angle header is

311-677-001. The plug is 3 rows by 2 columns with 0.1" on center spacĆ

ing.

The table below shows the pin out for the right angle header.

LED Interface

Pinout Signal Direction

1 Tag Transaction occurred Output

2 RF Power ON/OFF Output

3 GND N/A

4 GND N/A

5 Power ON; Processor Running Output

6 Serial Data Communiction AcĆ

tive

Output

13 Pin Female Circular DIN GPIO (General Purpose I/O) Connector

A general purpose I/O (Input/Output) connector provides signal lines in

and out of the READER allowing monitoring and/or control of external

devices or functions.The connector for this is a 13-pin female circular

DIN. The male mating connector for attaching to this is a CUI # SD-130,

one source is Digi-Key # CP-1013-ND. Intermec P/N: 351-184-001.

General Purpose Input/Output Interface

Pinout Signal Direction Description

1 GPIO IN0 Input GPIO Input 0

2 GPIO IN1 Input

3 GPIO IN2

4 GPIO IN3 -

5 GPIO OUT0 Output GPIO Output 0

6 GPIO OUT1 Output GPIO Output 1

7 GPIO OUT2 Output GPIO Output 2

8 GPIO OUT3 Output GPIO Output 3

9-13 Each connects to ground

through individual 10

ohm resistors

- Reserved

Outputs and inputs have 12-volt transient suppression devices to ground

at the connector.

Theory of OperationChapter —2

12 869 RFID Reader Service Instruction Manual

Output signals are driven by using 2N3904 NPN transistors (low level)

with a 100-kΩ pull-up to +5 volts through a silicon diode, giving about a

4.3-volt high level.

An output can be pulled high from an external source as high as 12 volts.

This will however tend to pull the other outputs higher (through two

100kΩ resistors). The low level will be about 0.1 volt up to about 30 milĆ

liamp. The output low voltage will climb higher as the sink current inĆ

creases.

There is no protection on this output. The user will need to ensure their

load will not require the Reader to sink more than 50 milliamps.

Input signals should be 0 to +1.5 volt for a low input and +3.5 to +5 volts

for a high input. Each input has a 1.1 kΩ resistor in series with clamping

diodes, but only about 1 A is used until the input exceeds the 0 to +5 volt

input range. There is also a weak (100 kΩ) pull-up to +5 volt on each inĆ

put.

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Intermec 869 RFID Reader Service Instructions Manual

Intermec 869 RFID Reader Service Instructions Manual

Intermec 869 RFID Reader Service Instructions Manual

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