Symbol Technologies VRC697C Wireless mobile computer terminal User Manual VRC 6940 Product Reference Guide

Symbol Technologies Inc Wireless mobile computer terminal VRC 6940 Product Reference Guide

Contents

Product Reference Guide

VRC 6940Product Reference Guide
VRC 6940Product Reference Guide72-37641-02Revision BJune 2001
ii 2001 by Symbol Technologies, Inc. All rights reserved.No part of this publication may be reproduced or used in any form, or by any electrical or mechanical means, without permission in writing from Symbol. This includes electronic or mechanical means, such as photocopying, recording, or information storage and retrieval systems. The material in this manual is subject to change without notice.The software is provided strictly on an “as is” basis. All software, including firmware, furnished to the user is on a licensed basis. Symbol grants to the user a non-transferable and non-exclusive license to use each software or firmware program delivered hereunder (licensed program). Except as noted below, such license may not be assigned, sublicensed, or otherwise transferred by the user without prior written consent of Symbol. No right to copy a licensed program in whole or in part is granted, except as permitted under copyright law. The user shall not modify, merge, or incorporate any form or portion of a licensed program with other program material, create a derivative work from a licensed program, or use a licensed program in a network without written permission from Symbol. The user agrees to maintain Symbol’s copyright notice on the licensed programs delivered hereunder, and to include the same on any authorized copies it makes, in whole or in part. The user agrees not to decompile, disassemble, decode, or reverse engineer any licensed program delivered to the user or any portion thereof.Symbol reserves the right to make changes to any software or product to improve reliability, function, or design.Symbol does not assume any product liability arising out of, or in connection with, the application or use of any product, circuit, or application described herein.No license is granted, either expressly or by implication, estoppel, or otherwise under any Symbol Technologies, Inc., intellectual property rights. An implied license only exists for equipment, circuits, and subsystems contained in Symbol products.Symbol, Spectrum One, and Spectrum24 are registered trademarks of Symbol Technologies, Inc. Other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged.Symbol Technologies, Inc.One Symbol PlazaHoltsville, New York 11742-1300http://www.symbol.com
iiiContentsAbout This ManualNotational Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiRelated Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiiContact and Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiiChapter 1. Getting StartedPurpose of This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Parts of a VRC 6940 Terminal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Options and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Radio Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Scanners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Printers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4Before You Use the Terminal.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4Chapter 2. Installing HardwareEquipment Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Hardware Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Providing Power: Vehicle Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5Providing Power: Wall or Workbench Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7Installation and the Internal Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8Chapter 3. Configuring Spectrum24Equipment Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Configuring a Spectrum24 Radio Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
ivVRC 6940 Product Reference GuideChapter 4. Installing SoftwareEquipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Transferring and Installing Application Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21. Prepare the PC for Communications and File Downloading. . . . . . . . . . . . . . . . . . . . . . . . . 4-22. Provide a Reliable Power Source. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-43. Prepare the Terminal for Transferring Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44. Start the File Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75. Complete the Installation of Transferred Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8Chapter 5. Operating a VRC 6940Powering a Terminal On and Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Powering On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Suspending or Turning Off the Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Powering On or Off Automatically. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3Resetting a Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3Modifier Keys: SHIFT, FUNC and CTRL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4Adjusting Brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6Entering Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6Bar Code Scanning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7Attaching an External Bar Code Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7Using a Bar Code Scanner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7Moving a Terminal to a Different Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8Command Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8Chapter 6. TroubleshootingTroubleshooting a VRC 6940 Terminal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3Scanning Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4Terminal Stops Responding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-41. Make Sure You are Within Range of an Access Point. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-42. Force the Terminal into Suspend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43. Restart After Forcing a Suspend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5Booting a VRC 6940 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5Warm Boot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5Cold Boot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6Command Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7If Rebooting Fails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7Memory Transfer Analyzer (MTA) Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8Technical Support Contacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
vContentsChapter 7. MaintenanceMaintaining the Internal Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1Storing the Terminal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2Appendix A. Utilities and Diagnostic TestsVRC 6940 Self Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2Keyboard Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4DIAG24 Diagnostics Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5DIAG24 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5Ping Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8Field Diagnostic Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10CFG24 Configurator Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12Starting the Utility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12Initializing the Radio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12The Configurator Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13View Config Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-13ESS ID or Net ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14Subnet Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14Default Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-15Terminal IP Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-16Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-16MU Sleep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-17Boot Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-17Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-18Buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-19Re-Transmit Delay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-19Rate Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-20Scanner/RF Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-20Flash Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-21Deleting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-21Copying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-21Renaming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-21Appendix B. Software EnvironmentBoot Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2LAN WorkPlace (LWP) Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3Software Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
viVRC 6940 Product Reference GuideAppendix C. Keyboard LayoutsKeyboard Character & Character Combination Illustrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4Appendix D. Environmental and Technical SpecificationsSpecifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1Scanner Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2COM1 Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3Null Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4Appendix E. Communications Status CodesCommunications Status Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1GlossaryIndex
viiAbout This ManualThis Product Reference Guide describes the VRC 6940 terminal. Topics include: hardware installation, software configuration, operation, troubleshooting, and maintenance.Notational ConventionsThis document uses the following conventions:!“Operator” or “User” refers to anyone using a VRC 6940 terminal.!“Te rmin al” refers to a VRC 6940 terminal.!“You” refers to the System Administrator or Technical Support person using this manual to install, configure, operate, maintain or troubleshoot a VRC 6940.!Bold upper case type indicates a key on the terminal. For example: “Press ENTER”, “Press J, then K”.!Courier type is used for command line text and file names.!Italics are used:"to identify menu items on a terminal screen"for variable names in usage and syntax descriptions"to highlight specific items in the general text"to identify chapters and sections in this and related documents!Bullets (♦) indicate:"action items"lists of alternatives"lists of required steps that are not necessarily sequential!Sequential lists (e.g., those that describe step-by-step procedures) appear as numbered lists.
viiiVRC 6940 Product Reference GuideRelated Publications!VRC 6900 Series Quick Reference Guidep/n 72-37640-XX!Series 3000 Application Programmer's Guidep/n 70-16308-XX!Series 3000 Application Programmer’s Reference Manualp/n 70-16309-XX!Series 3000 System Software Manualp/n 70-16310-XX!Spectrum 24 Network Terminal Technical Reference Guide — Radio Firmware and Driver Guide Version 3p/n 70-20193-XX!Spectrum 24 Ethernet Access Point User Guidep/n 70-12057-XX!Spectrum24 Wireless LAN Adapter Product Reference Guide p/n 70-20505-XXContact and Service InformationIf you have a problem with your equipment, contact the Symbol Support Center for your region. See page vii for contact information. Before calling, have the model number, serial number, and several of your bar code symbols at hand.Call the Support Center from a phone near the scanning equipment so that the service person can try to talk you through your problem. If the equipment is found to be working properly and the problem is symbol readability, the Support Center will request samples of your bar codes for analysis at our plant.If your problem cannot be solved over the phone, you may need to return your equipment for servicing. If that is necessary, you will be given specific directions.Note: Symbol Technologies is not responsible for any damages incurred during shipment if the approved shipping container is not used. Shipping the units improperly can possibly void the warranty. If the original shipping container was not kept, contact Symbol to have another sent to you.
ixAbout This ManualSymbol Support CenterFor service information, warranty information or technical assistance contact or call the Symbol Support Center in:United States 1Symbol Technologies, Inc.One Symbol PlazaHoltsville, New York 11742-13001-800-653-5350CanadaSymbol Technologies Canada, Inc.2540 Matheson Boulevard EastMississauga, Ontario, Canada L4W 4Z2905-629-7226United KingdomSymbol TechnologiesSymbol PlaceWinnersh Triangle, Berkshire RG41 5TPUnited Kingdom0800 328 2424 (Inside UK)+44 208 945 7529 (Outside UK)Asia/PacificSymbol Technologies Asia, Inc.230 Victoria Street #04-05Bugis Junction Office TowerSingapore 188024337-6588 (Inside Singapore)+65-337-6588 (Outside Singapore)AustraliaSymbol Technologies Pty. Ltd.432 St. Kilda RoadMelbourne, Victoria 30041-800-672-906 (Inside Australia)+61-3-9866-6044 (Outside Australia)Austria/ÖsterreichSymbol Technologies Austria GmbH Prinz-Eugen Strasse 70Suite 32.Haus, 5.Stock1040 Vienna, Austria1-505-5794 (Inside Austria)+43-1-505-5794 (Outside Austria)Denmark/DanmarkSymbol Technologies ASGydevang 2,DK-3450 Allerod, Denmark7020-1718 (Inside Denmark)+45-7020-1718 (Outside Denmark)Europe/Mid-East Distributor OperationsContact your local distributor or call+44 208 945 7360Finland/SuomiOy Symbol TechnologiesKaupintie 8 A 6FIN-00440 Helsinki, Finland9 5407 580 (Inside Finland)+358 9 5407 580 (Outside Finland)FranceSymbol Technologies FranceCentre d'Affaire d'Antony3 Rue de la Renaissance92184 Antony Cedex, France01-40-96-52-21 (Inside France)+33-1-40-96-52-50 (Outside France)
xVRC 6940 Product Reference GuideIf you purchased your Symbol product from a Symbol Business Partner, contact that Business Partner for service.For the latest version of this guide go to:http://www.symbol.com/manuals.Germany/DeutchlandSymbol Technologies GmbHWaldstrasse 68D-63128 Dietzenbach, Germany6074-49020 (Inside Germany)+49-6074-49020 (Outside Germany)Italy/ItaliaSymbol Technologies Italia S.R.L.Via Cristoforo Columbo, 4920090 Trezzano S/N NavigiloMilano, Italy2-484441 (Inside Italy)+39-02-484441 (Outside Italy)Latin America Sales Support7900 Glades RoadSuite 340Boca Raton, Florida 33434 USA1-800-347-0178 (Inside United States)+1-561-483-1275 (Outside United States)Mexico/MéxicoSymbol Technologies Mexico Ltd.Torre PicassoBoulevard Manuel Avila Camacho No 88Lomas de Chapultepec CP 11000Mexico City, DF, Mexico5-520-1835 (Inside Mexico)+52-5-520-1835 (Outside Mexico)Netherlands/NederlandSymbol TechnologiesKerkplein 2, 7051 CXPostbus 24 7050 AAVarsseveld, Netherlands315-271700 (Inside Netherlands)+31-315-271700 (Outside Netherlands)Norway/NorgeSymbol TechnologiesTrollasveien 36Postboks 721414 Trollasen, Norway66810600 (Inside Norway)+47-66810600 (Outside Norway)South AfricaSymbol Technologies Africa Inc.Block B2Rutherford Estate1 Scott StreetWaverly 2090 JohannesburgRepublic of South Africa11-4405668 (Inside South Africa)+27-11-4405668 (Outside South Africa)Spain/EspañaSymbol Technologies S.A.Edificioi la Piovera AzulC. Peonias, No. 2 - Sexta Planta28042 Madrid, Spain9-1-320-39-09 (Inside Spain)+34-9-1-320-39-09 (Outside Spain)Sweden/SverigeSymbol Technologies ABAlbygatan 109DSolnaSweden84452900 (Inside Sweden)+46 84452900 (Outside Sweden)1Customer support is available 24 hours a day, 7 days a week.
1-1Chapter 1 Getting StartedVRC 6940 terminals are rugged mobile computer terminals that communicate by radio with a host computer on Spectrum24® networks. End-users view network applications and data on the terminal’s 8-line screen, and use its keyboard or an attached scanner to enter and transmit data. The terminal uses the DR-DOS™ V3.41 operating system, compatible with the industry-standard IBM PC-DOS™. DR-DOS provides access to a number of commercially available programming tools. Symbol can provide additional programming tools for easier system programming and access to special features.VRC 6940 features include:!8 line x 40 column screen display !54-key keyboard !DOS operating system and 16-bit processing!compatibility with laser scanners and pen-based bar code readers!support for industrial software applications!support for spread-spectrum radio frequency technologyPurpose of This ManualThis manual is for Information Systems and Technical Support personnel who are responsible for installing and supporting VRC 6940 terminals. It describes how to install, configure and maintain a terminal. For information on day-to-day operation for end-users, see the VRC 6940 Terminal Quick Reference Guide (p/n 72-37640-XX).
1-2VRC 6940 Product Reference GuideParts of a VRC 6940 TerminalStandard PartsA standard VRC 6940 terminal includes these standard parts:!Terminal with attached vehicle-mount bracket!Bracket knobs (2)!External DC power cable!Internal PCMCIA radio card for use with a Symbol Spectrum24 network!VRC 6940 Terminal Quick Reference Guide (p/n 72-37640-XX) Figure 1-1. Parts of a VRC 6940F1 F2 F3 F4 F5 BACK ON/OFF CTRL9ABCDEFG 786HIJKLMN 45 CLEAR3OPQRSTU 12 ENTER.VWXY ZSHIFT FUNC -0Antenna (accessory option)Bracket KnobVe h i c l e - mo u n t B r a c ke tDisplay ScreenKeyb oa rdScanner Connector(Remove plug coverbefore using) RS-232 Connector(Remove plug cover before using)Power ConnectorFrontBack
1-3Getting StartedOptions and AccessoriesOptionsYou can also order the VRC 6940 with these options:!Keyboard backlight !Internal heating device AccessoriesYou can order these VRC 6940 accessories separately from Symbol:!Scanner cable!RS-232 cable!Primary antenna!Vehicle-mounted antenna!Spectrum24® PCMCIA radio card!AC Universal Power Supply!AC cable!DC cableNote: Contact your Symbol Sales representative to order the cable appropriate for your country.Radio CardsVRC 6940 models include an internal PCMCIA radio card for use with a Symbol Spectrum24 network. For other information on radio cards, contact Symbol Technologies.ScannersThe VRC 6940 terminal can use these Symbol laser scanner models:!LS 2000 !LS 9100!LS 3000 !LT 1700!LS 5000
1-4VRC 6940 Product Reference GuidePrintersThe VRC 6940 terminal can use these Symbol printer models:Before You Use the Terminal...!PS 1000 !PS 200Table 1-1. VRC 6940 Installation and Configuration TasksTask Where to Find the InstructionsInstall the hardware in a vehicle or forklift, or on a wall or workbench.See Hardware Installation page 2-2.Provide a primary AC or DC power source.See Providing Power: Vehicle Installations on page 2-5.Charge the internal battery. See Installation and the Internal Battery on page 2-8.Configure the radio card. See Configuring a Spectrum24 Radio Card on page 3-2.Transfer, install and configure software. See Transferring and Installing Application Programs on page 4-2.
2-1Chapter 2 Installing HardwareThis chapter describes how to install a VRC 6940 terminal into a vehicle or onto a wall or workbench. Please read all of these instructions before you begin. CautionA properly trained technician must perform the installation. Improper installation can damage your vehicle. Equipment RequiredVehicle Mounted VRC 6940!an External DC power cable (supplied with terminal).!minimum of two 3/8” bolts with self-locking nylon nuts.!a drill with a 7/16” drill bit.!7/16” hex wrench.!a connector for terminating the External DC power cable. Select one that mates with your vehicle’s power supply.!primary or external antenna (optional).Wall or Workbench Mounted VRC 6940!AC universal power supply (Symbol p/n 50-14001-006)!AC line cable (Symbol p/n 23844-00-00)!DC power cable (Symbol p/n 25-39385-01)!minimum of two 3/8” bolts with self-locking nylon nuts
2-2VRC 6940 Product Reference Guide!a drill with a 7/16” drill bit!7/16” hex wrench!primary or external antenna (optional)Hardware InstallationThe physical requirements of the work area affect where you place the terminal. There are different installation options, depending on where you plan to locate it. Figure 2-1 shows a terminal mounted on a vehicle. Figure 2-2 shows a terminal mounted on a wall, and Figure 2-3 shows a terminal mounted on a workbench.CautionDo not install a VRC 6940 terminal in a location that will affect vehicle safety or driveability.To install VRC 6940 hardware:1. Prepare a mounting location: a. Select a location to mount the terminal. The terminal’s attached bracket has holes cut for bolts. Use these holes to mark bolt hole locations.b. Prepare the mounting surface to accept two 3/8” bolts. Drill two holes with a 7/16” drill bit.2. Install the terminal onto the mounting surface: a. Position the terminal on the mounting surface.b. Fasten it securely using a minimum of two 3/8” self-locking nuts. 3. Attach the Bracket Knobs. When you first unpack it, the terminal has hex bolts in place of the Bracket Knobs shown in Figures 2-1, 2-2, and 2-3. These knobs allow users to adjust the angle of the terminal.a. Use a 7/16” hex wrench to remove the bolts.b. Replace them with the Bracket Knobs. c. To adjust the angle of the display, partially unscrew the Bracket Knobs. Then adjust the angle of the terminal and re-tighten the knobs.Installation Note: Mounting LocationsThe bracket and terminal must be:•firmly secured to a surface that can support the terminal’s weight — on a vehicle, wall or workbench•secured with a minimum of two 3/8” diameter bolts and nylon self-locking nuts•easy to for end-users to see and reach
2-3Installing HardwareFigure 2-1. Terminal Mounted on a VehicleFigure 2-2. Terminal Mounted on a WallFigure 2-3. Terminal Mounted on a WorkbenchF1 F2 F3 F4 F5 BACK ON/OFF CTRL9ABCDEFG 786HIJKLMN 45 CLEAR3OPQRSTU 12 ENTER.VWXY ZSHIFT FUNC -0
2-4VRC 6940 Product Reference Guide4. Optional: attach a primary antenna to the connector at the top of the terminal, as shown in Figure 2-4. To attach the antenna:a. Place the metal end of the antenna onto the connector. b. Line up the posts with the connector openings and press down gently.c. Twist the bottom ring clockwise to lock it into position.Figure 2-4. Attaching a Primary Antenna5. Optional: install a vehicle-mounted antenna. Sometimes you can improve wireless communication by mounting an external antenna onto the vehicle, as shown in Figure 2-5. Symbol has several different external antennas available. Contact your Support Representative for more information. To connect an external vehicle-mounted antenna:a. Secure the external antenna to an appropriate location on the vehicle.b. Connect one end of a coaxial cable to the terminal’s Antenna Connector. Connect the other end to the vehicle-mounted antenna. Make the coaxial cable as short as possible to minimize signal loss.Figure 2-5. Vehicle-Mounted AntennaBack of Terminal Antenna ConnectorCoaxial CableAntenna
2-5Installing HardwareProviding Power: Vehicle InstallationsVRC 6940 terminals can be powered by: !12V or 24V gas-powered vehicles!battery-powered vehicles, up to 60 volts To provide power to a vehicle-installed VRC 6940:1. Locate your vehicle’s power source. Always connect a VRC 6940 terminal to a continuous or unswitched power source.2. Prepare the External DC power cable. One end of the power cable fits into the terminal’s DC Power connector. The other end has no connector (see Figure 2-6). Figure 2-6. Preparing the External DC Power CableTo prepare the External DC power cable end: a. In-line fuse holder: if no fused output is available, add a fuse-holder and 5 Amp fuse to the External DC power cable. Follow these steps and refer to Figure 2-7: i. Strip back six inches of the cable jacket. ii. Cut about 5” from the red power wire and strip 3/8” insulation from the wire.iii. Strip 3/8” insulation from the fuse-holder wire. iv. Twist the stripped wire ends together and splice them using a twist-on nylon wire connector. v. Make sure the fuse holder contains a 5 Amp slow-blow fuse. Wrap the wires neatly, as necessary.Plug in to the DC PowerCable Endconnector on the terminalto be preparedInstallation Note: Power SourcesThe ideal location for connecting a VRC 6940 External DC power cable would be a fused power source on the vehicle’s power distribution panel. If no fused power source is available, connect the terminal directly to a vehicle battery. In this case, Symbol recommends you use an in-line fuse holder and 5A slow-blow fuse. The fuse protects your vehicle from an electrical short on the power cable.
2-6VRC 6940 Product Reference GuideFigure 2-7. Adding an In-line Fuse Holderb. Route the External DC power cable from the terminal location to the connection point for your vehicle’s power source.See the Installation Note below.In-line fuse holder with 5A slow-blow fuse Twist-on nylon Wrapped wires Red power wirei.ii.iii.iv.v. wire connector and fuse holder Installation Note: Cable Routing CautionThe means of routing and securing the External DC power cable from the terminal to the vehicle power source is extremely important. Hazards associated with improper wiring can be severe. To avoid unintentional contact between the wire and any sharp edges, provide the cable with proper bushings and clamping where it passes through openings. If the wire is subjected to sharp surfaces and excess engine vibration, wiring harness insulation can wear away, causing a short between the bare wire and chassis. This can start a fire.! !
2-7Installing Hardware3. Prepare the cable termination: Strip 3/8” of insulation from the two wire ends and terminate them with a connector that matches your vehicle’s requirements. See the Installation Note, right, for more information.a. Connect the red wire to the vehicle power source. Connect the black wire to a vehicle ground wire or chassis ground. b. Connect the External DC power cable to your vehicle power source. 4. Insert the terminal end of the External DC power cable into the terminal’s Power Connector. Align the red dot on the end of the power cable with the red dot on the Power Connector.WARNINGA Lead Acid battery can leak Hydrogen gas. A spark anywhere near the battery can cause it to explode. Always make your final connection to power as far away from the battery as possible, i.e., connect the power cable to the battery first, then connect it to the terminal.Providing Power: Wall or Workbench InstallationsFor wall or workbench-mounted terminals, or for operating a terminal while away from a vehicle, you can power an VRC 6940 from an AC universal power supply. You need the AC universal power supply, an AC line cable, and a DC power cable as listed on page 2-1. To provide power from an AC source:1. Insert the AC line cable into the AC connector on the AC universal power supply. 2. Plug the other end of the AC line cable into an AC wall outlet.3. Insert the DC power cable into the DC connector on the AC universal power supply. 4. Plug the other end of the cable into the terminal’s Power Connector.Installation Note: Cable TerminationHow the cable terminates depends on your vehicle. If your vehicle has a power output connector, then attach a mating connector to the end of the power cable. You may be able to connect to a fuse panel with a commercially available connector. If your vehicle has no power output connector, attach a ring terminal (for a battery post) or blade terminal connector (for a fuse panel). Consult your vehicle Owner’s Manual for information on how to access your vehicle’s power supply.
2-8VRC 6940 Product Reference GuideInstallation and the Internal BatteryA VRC 6940 terminal has an internal battery that powers the terminal if there is a temporary interruption, disconnection, or fluctuation in the main DC or AC power. We recommend that you save all data and close all applications before removing a terminal’s main power supply.You cannot use the internal battery to operate the terminal.A terminal’s internal battery may be depleted when you first install it. It charges itself from the terminal’s main power supply (DC or AC). If the main power supply is stable, you can plug in the terminal and use it immediately. If the main power supply is not stable, there may be power interruptions that cause the terminal to reset itself during its first few hours of operation. If the terminal resets itself, you may lose unsaved data. To avoid this, we recommend that you plug in the terminal and allow it to charge for two hours before using it. It takes 48 hours to fully charge the internal battery. A fully charged internal battery can maintain data for up to 72 hours if the unit is disconnected from its main power source. This time is reduced if the radio mode maintains continuous communication with a host.Note: Reliable terminal operation during power interruptions cannot be guaranteed without a fully charged internal battery. If the internal battery is not fully charged, a power interruption may cause the terminal to reset itself and erase valuable data.
3-1Chapter 3 Configuring Spectrum24Each VRC 6940 terminal has a Spectrum24 radio card that must be configured before the terminal can communicate with a Spectrum24 network. This chapter describes how to do this. For more information on Spectrum24 radio communications, see Spectrum24 Network Terminal Technical Reference Guide — Radio Firmware and Driver Guide Version 3 (p/n 70-20193-XX).Before you begin, read the procedures in this chapter all of the way through and provide a power source as described in Chapter 2.Equipment RequiredTo configure the terminal and transfer applications, you need these items:!a VRC 6940 terminal !a reliable power source
3-2 VRC 6940 Product Reference GuideConfiguring a Spectrum24 Radio CardTo configure a Spectrum24 radio card.1. Provide a reliable power source.If you have not already done so, install the terminal hardware and provide a reliable power source as described in Chapter 2. If the terminal is mounted in a vehicle, it can remain mounted as long as the internal battery is fully charged (see page 2-8) and you can position it close enough to the host PC for the cables to reach. Otherwise, remove it from the vehicle, position it on a workbench and provide operating power with a Symbol AC universal power supply.Note: If there is a power interruption during configuration, simply restore the power and start again at step two (Start the Terminal).2. Start the terminal.The first time you power up a VRC 6940 terminal, press the ON/OFF key to start the terminal, and let it run through a series of messages. The terminal loads essential utilities and system drivers and displays the CFG24 Configurator utility as shown in Figure 3-1. You can also start the CFG24 Configurator utility by typing CFG24 at a DOS command line and pressing ENTER.Figure 3-1. The CFG24 Configurator UtilityCONFIGURATOR X.XXView configESS IdSubnet MaskDefault RouterMU IP AddressDiversityCLR, Enter^^
3-3Configuring Spectrum243. Set Spectrum24 configuration parameters. The CFG24 Configurator utility lets you set Spectrum24 parameters in a text file on the RAM disk (D:\net.cfg). It also saves the parameters in a buffer in flash memory on the radio card. The radio driver and TCP/IP stack get their configuration parameters from net.cfg. Table 3-1 summarizes Spectrum24 parameters. For more information on setting parameters, see CFG24 Configurator Utility on page A-12.Table 3-1. Spectrum24 Configuration OptionsOption DescriptionView Config Displays the current Spectrum24 configuration.ESS Id or Net Id A radio network ID that lets you differentiate between different radio networks. All equipment on one network must use the same ESS Id or Net Id. Set this parameter to the same value specified for the Spectrum24 Access Points (APs). An ESS Id requires a 32-character alphanumeric value. A Net Id requires a three-character hexadecimal value (101 to 1FE).Subnet Mask The network uses a Subnet Mask to determine whether or not one device can communicate directly with another (e.g., a terminal trying to communicate with a host computer). The Subnet Mask depends on your facility’s IP address allocations. Set this option as advised by your Network Administrator. The default value is 255.0.0.0Note: If you change the boot mode, the value set by a server overrides this value. See Boot Mode.Default Router The Default Router is the node address that receives all packets destined for remote networks. Set this as advised by your Network Administrator. The default value is 0.0.0.0MU IP Address If a terminal is using a fixed IP address, enter it in this field. Networks use IP addresses to determine where to send data that is being transmitted over the network. Configuration Note: Navigating the MenusTo navigate through the menus:•Press UP or DOWN arrow keys to scroll through menu options.•To select, highlight the menu option you want, then press ENTER. A highlighted option shows up in reverse video . •To erase an entire entry, press CTRL, and then D.•To erase part of an entry, press BACK.•To return to a previous menu, press CLEAR. •To exit to the DOS prompt, return to the Configurator menu and press CLEAR.reverse video
3-4 VRC 6940 Product Reference GuideNote: If you are using a Spectrum24 card with the 802.11 protocol, the ESS Id option appears on the menu. If you are using a Spectrum24 card with the Spring protocol, the Net Id option appears on the menu.Diversity Determines how many antenna ports the radio will attempt to use for communications. Match this setting to the number of antennas you’re using. MU Sleep Mode If you set MU Sleep Mode to On, the radio stays on even if an application powers down the terminal because of inactivity. The default setting is On.Boot Mode Indicates the source of the terminal’s IP address. Options are Boot, DHCP or Manual Entry. If you select Manual Entry, the terminal uses the IP address specified in MU IP Address. See page A-17 for more information.Pwr Management If you set Pwr Management to PSP, the radio only powers up when there is traffic on the network. If you set it to CAM, the radio is always ready to receive. The default setting is PSP.Buffers Sets the number of data buffers used by the radio driver (4, 8 or 12).ReXmit Delay If a terminal tries to transmit a packet and fails, it tries to re-transmit the packet later. ReXmit Delay sets the length of time between re-transmissions. The options are short and long. The short option improves response time but uses more power. If there is high network traffic, or a high amount of electrical “noise” nearby, select short to improve response time.Rate Control Determines which Spectrum24 Access Points a terminal can communicate with. The options are 1Mb only, 2Mb only, 1Mb and 2 Mb. Select a parameter that matches the Rate Setting for the AP, if one has been specified. For more information see Spectrum24 Wireless LAN Adapter Product Reference Guide (p/n 70-20505-XX).Scan/RF Op Determines whether or not the scanner and radio can operate at the same time. Concurrent Op allows both to operate at the same time. Scan Stops RF causes the scanner to lock out the radio during an active scan.Exit Closes the utility and displays a DOS prompt.Table 3-1. Spectrum24 Configuration OptionsOption Description
3-5Configuring Spectrum244. When you finish setting Spectrum24 parameters, warm boot the terminal:a. Press the ON/OFF key to suspend the terminal.b. Press and hold the SHIFT and L keys.c. Press and release the ON/OFF button.d. Release the SHIFT and L keys."The terminal reloads the system drivers and attempts to associate with a Spectrum24 AP. "If the radio card is configured correctly, it tries to locate a bootp server, fails, and boots to a DOS prompt. This means the radio card is working correctly. Proceed to step 5."If the radio card is not configured correctly, the CFG24 Configurator utility reappears. Recheck your configuration parameters and perform another warm boot.5. Turn the VRC 6940 off.You have successfully configured the Spectrum24 radio card. You may now download and install application programs. See Transferring and Installing Application Programs on page 4-2.
3-6 VRC 6940 Product Reference Guide
4-1Chapter 4 Installing SoftwareThis chapter describes how to install application programs onto a terminal. VRC 6940 terminals have a number of drives available for storing user applications and data. For more information on available drive space, the software environment and a list of standard VRC 6940 software, see Appendix B, Software Environment.Before you begin, read the procedures in this chapter all of the way through.Equipment RequiredTo transfer applications, you need: !a VRC 6940 terminal!a Host PC!an RS-232 serial null modem cable with a 16-pin male connector at one end, and a 25-pin female connector at the other end!a reliable power supply!software for transferring files from a Host PC to the terminalSee Tab le 4-1 for information on recommended software. Also see the Series 3000 Application Programmer's Reference Manual (p/n 70-16309-XX).Table 4-1. Software Required for Transferring FilesType of File to be Transferred Host PC Software VRC 6940 SoftwareHEX Image SENDHEX or WINHEX Program LoaderOther file types TFT3000 TDREM
4-2 VRC 6940 Product Reference GuideTransferring and Installing Application ProgramsThis section describes how to transfer a HEX image from a Host PC onto a VRC 6940 terminal over a standard RS-232 null modem cable. The procedure uses the SENDHEX or WINHEX program on the Host PC and the Program Loader utility on the VRC 6940. The Program Loader installs the HEX image by converting the ASCII data stream into files that are stored in non-volatile memory (NVM) on the terminal (the application EEPROM). Any further installation procedures depend on the contents of the HEX file.To transfer non-HEX images or files, use the TFT3000 program on the Host PC, and the TDREM utility on the terminal. For details on all of these programs, refer to the Series 3000 Application Programmer’s Reference Manual (p/n 70-16309-XX).Figure 4-1. Cabling for Downloading on Benchtop1. Prepare the PC for Communications and File DownloadingTo prepare the PC for communications:1. Begin with the VRC 6940 terminal in suspend mode.2. Remove the plug cover from the RS-232 serial port on the terminal, and attach the male connector end of the null modem cable. 3. Attach the female end of the null modem cable to the Host PC serial port, as shown in Figure 4-1. Use an adapter, if necessary.4. On the PC, start the communications program. For example, to use SENDHEX, first open a DOS window. Then type the SENDHEX command with appropriate To the serial portVRC 6940 RS-232 serial portNull modem cableLaptop Computer
4-3Installing Softwareparameters, and press ENTER. The example in Figure 4-2 shows a baud rate of 38400, and the COM2 option. For pgmname, type the name of the HEX file you are transferring, without the .hex extension. The default parameter values are:"9600 bps"COM1"7 data bits"Odd parity"Xon/Xoff flow controlFigure 4-2. Setting up Communications with SENDHEXNote: Versions of SENDHEX earlier than version 3.0 do not support flow control. If you are using an earlier version, and errors appear, use a lower baud rate.5. A prompt appears as shown in Figure 4-3. Do not press ENTER yet. You must set up the VRC 6940 terminal next, as described in the next section.Figure 4-3. The SENDHEX PromptC:\>cd\sendhex pgmname 38400 com2SENDHEX HEX File Name(no .hex extension) Baud RateCOM PortCommandC:\>cd\sendhex pgmname 38400 com2Version: 3.01-01Press <Enter> when remote is ready. ESC to abort...
4-4 VRC 6940 Product Reference Guide2. Provide a Reliable Power SourceIf you have not already done so, install the terminal hardware and provide a reliable power source, as described in Chapter 2. If the terminal is mounted on a vehicle, it can remain mounted as long as the internal battery is fully charged (see page 2-8) and you can position it close enough to the Host PC for the cables to reach. Otherwise, remove it from the vehicle, position it on a workbench and provide operating power with a Symbol AC Universal Power Supply.Note: If there is a power interruption during the file transfer process, restore the power and start again at step three (Prepare the Terminal for Transferring Files).3. Prepare the Terminal for Transferring FilesThis section describes how to run the Program Loader utility on a VRC 6940 terminal, so the terminal can receive files transferred from a Host PC. To set up the terminal:1. Boot the VRC 6940 into Command Mode:a. With the terminal in suspend, press and hold the A and D keys.b. Press and release the ON/OFF key.c. Release the A and D keys.2. The terminal boots to the Command Mode screen, shown in Figure 4-4.Figure 4-4. Command Mode screen Installation Note: Using MenusTo navigate the menus:•Press UP or DOWN arrow keys to scroll through options.•To return to the previous menu, press CLEAR. COMMAND MODESelect FunctionSelf Test
4-5Installing Software3. Press UP or DOWN arrows to scroll through Command Mode options until you see the Program Loader option. Then press ENTER to display the message shown in Figure 4-5.Figure 4-5. Erasing NVM (EEPROM)4. When you are ready to erase EEPROM, press ENTER. This message appears:Program LoaderErasing EEPROMPlease wait....The program erases the EEPROM and prompts you for communications parameters.5. Set the communications parameters to 38400 bps, 7 data bits, odd parity and Xon/Xoff flow control.a. Baud Rate: Select 38400. The screen will look like this:Figure 4-6. Setting Baud Rate on the VRC 6940Program LoaderWARNING: EEPROM WILL BE ERASEDCONTINUE? <ENT>Installation Note: Before you Erase EEPROMIf you have not configured the Spectrum24 radio card for the terminal, press CLEAR to cancel the operation, and configure the radio card now (see page 3-2). When you run the Program Loader and press ENTER, it erases the EEPROM (non-volatile memory). You must erase the EEPROM before you can transfer the HEX file onto the terminal. Comm ParametersBaud6 38400
4-6 VRC 6940 Product Reference Guideb. Data Bits: Select 7. The screen will look like this:Figure 4-7. Setting Data Bits on the VRC 6940c. Parity: Select Odd. The screen will look like this:Figure 4-8. Setting Parity on the VRC 6940d. Flow Control: Select Xon/xoff. The screen will look like this:Figure 4-9. Setting Flow Control on the VRC 69406. When all parameters are set, the screen displays this message:Program LoaderStart? <ENT>7. Press ENTER to start the Program Loader.Comm ParametersData Bits7Comm ParametersParityOddComm ParametersFlow ControlXon/xoff
4-7Installing Software4. Start the File Transfer1. On the Host PC, press ENTER to start the transfer. The Host PC displays this message:C:>\ Bytes sent = xxxx xx%If the Host PC is not ready or the cable is disconnected between the PC and the terminal, the PC displays this message:Awaiting DSRIn this case, check the cable connection and then press ENTER again on the Host PC to start the download.2. During the transfer, the VRC 6940 terminal displays these messages:Program LoaderReceiving :xxxxCheck the status on both the terminal and the Host PC during data transmission. They should both show program segment addresses being transferred (XXXX). If this does not happen, then the data is not transferring correctly.3. When the transmission is complete, the terminal displays a status code. A successful download shows a status of 0000. This message appears:Program LoaderStatus 0000Any other value indicates a failed transfer. See Appendix E, Communications Status Codes.Failed TransfersIf a file transfer finishes with a status value other than 0000, then the transfer was not successful. In this case: 1. Check cable connections between the VRC 6940 terminal and the Host PC. Make sure the null modem cable is connected to the correct port on the Host PC.2. Repeat the transfer steps using a lower baud rate (e.g., 19200).3. If the problem persists, contact Symbol Technical Support for assistance.
4-8 VRC 6940 Product Reference GuideSuccessful File TransferFollowing a successful file transfer, the files must be copied to the flash disk before you can use them. This happens the next time the terminal is re-initialized (cold booted). See 5. Complete the Installation of Transferred Files, next.5. Complete the Installation of Transferred FilesTo complete the installation of transferred files, you must re-initialize (cold boot) the terminal. To do this:1. Disconnect the null modem cable from the VRC 6940 terminal and Host PC. 2. Replace the terminal plug cover for the serial port on the VRC 6940.3. Perform a cold boot:a. Press and hold the ENTER, F1 and F4 keys.b. Press and release the ON/OFF key.c. Release the ENTER, F1 and F4 keys.4. When the terminal restarts, it boots according to the applications you have loaded. For more information, refer to the documentation for the applications.
5-1Chapter 5 Operating a VRC 6940After you install and configure a VRC 6940 terminal for your facility, you can release it for use. This chapter describes how to use the terminal, including:!Powering the terminal On and Off!Resetting the terminal!Adjusting brightness!Entering data!Attaching a scanner!Moving a terminal to different power source!Booting into Command ModeThe instructions in this chapter assume that the terminal has been fully installed, configured, and set up to run your facility’s software applications. For information on installing and configuring a terminal, see Chapters 2, 3 and 4.
5-2 VRC 6940 Product Reference GuidePowering a Terminal On and OffA terminal must be connected to a main power supply (e.g., a vehicle battery). If you remove this power supply, the terminal suspends and cannot be turned on again until you reconnect the power. An internal battery maintains data while the terminal is suspended, but it cannot be used to operate the terminal. Save all your data and close all applications before removing a terminal’s main power supply. See page 2-8 for more information.Powering OnTo turn the terminal on, press the ON/OFF key located at the top right corner of the alpha section of the keyboard. As the terminal starts, several screens of information appear, followed by the application screen set to run at your facility. If the terminal does not power on, see Chapter 6, Troubleshooting.Figure 5-1. The ON/OFF keySuspending or Turning Off the TerminalTo suspend the terminal, press the ON/OFF key. The terminal appears to turn off. However if you press the ON/OFF key again, the terminal resumes its previous session.Forcing the Terminal into SuspendIf the terminal does not suspend when you press the ON/OFF key, you can force it into suspend. To do this, press and hold the ON/OFF key for 15 seconds, or until the display goes dark. Turning the Terminal OffNormally, you will not turn the terminal off: you will place it into suspend. The terminal only turns off if you have:!disconnected the power cable, AND!allowed the internal battery to run down.For more information, see Installation and the Internal Battery on pa g e2-8.To start the terminal press the ON/OFF key.
5-3Operating a VRC 6940Powering On or Off AutomaticallyParticular applications may cause a VRC 6940 to power on or off automatically. This can be controlled by application programming or default configuration settings. For example, some applications may cause the system to be powered on by:!pressing a key other than the ON/OFF key!pressing a scanner trigger!scheduled, unattended operations such as an overnight communications sessionThe terminal may also power OFF automatically:!as triggered by an application. !if it is not used for some period of time determined by settings in the application you are using. For more information, see the documentation for your application.Resetting a TerminalYou cannot reset the system or applications on a VRC 6940 by pressing the ON/OFF key. When you press the ON/OFF key to suspend a terminal, it maintains its current session and session data. When you turn it on again, it restores the display and continues processing from the point where it was when you powered down. To reset the system and applications, you must reset the terminal. You may need to reset a terminal if:!the power has been forced off. !the terminal stops responding to keystrokes or to the ON/OFF key.!you need to end the current session and start a new session.To reset (warm boot) a terminal:1. Press the ON/OFF key to suspend the terminal. If necessary, force it into suspend by pressing and holding the ON/OFF key for 15 seconds.2. Press and hold the SHIFT and L keys.3. Press and release the ON/OFF key.4. Release the SHIFT and L keys.The terminal restarts and you can log in to an application. Note that if you reset a terminal, you may lose any unsaved data.
5-4 VRC 6940 Product Reference GuideModifier Keys: SHIFT, FUNC and CTRLSHIFT, FUNC, and CTRL are modifier keys that generate a special character or function. For example, you might press FUNC, J to brighten the display. To do this:1. Press and release the FUNC key. 2. Press and release the J. 3. The display brightens and the keyboard returns to normal functioning.Use modifier keys individually or in combinations. For example:!Press SHIFT to cause the next alpha key press to generate an upper case letter. !Press FUNC, and then CTRL to generate an ALT function, just like the ALT key on a PC. The shape of the cursor displayed on the screen indicates the state of the keyboard. Figure 5-2 shows what the standard cursor shapes mean. Note than an application can modify the standard keyboard cursor shape.Figure 5-2. Keyboard State Cursor IndicatorsKey DescriptionsMost of the keys are self-explanatory: alpha keys produce alpha characters, number keys produce numeric characters. Table 5-1 describes special functions performed by specific keys and key sequences. For additional information on keyboard characters and layouts, see Appendix C, Keyboard Layouts.KeyboardState CursorCharacter LowBattery
5-5Operating a VRC 6940Table 5-1. Special Key SequencesTips for Using the Keyboard"Press only one key at a time, unless instructions specifically tell you to press two keys at the same time (e.g., when resetting the terminal). Pressing two or more keys at the same time can cause an error. "Press keys in the correct sequence. If an applications lists keys in a sequence, press the keys one at a time in the order they are listed. "Auto-repeat feature. Some applications use the configurable auto-repeat feature of the keyboard. If they do, when you press and hold a key, the character will repeat until you release it.If a key is pressed immediately after a modifier key, the modifier sequence affects only the first occurrence of the character key. For example, if you press SHIFT, and then press and hold A, the terminal generates: Aaaaa.Function Access MethodDescriptionSHIFT SHIFT key After you press SHIFT, the next key you press appears in uppercase (for an alpha key), or as a punctuation mark or symbol (for a number key). CAPS LOCK FUNC, L Places the whole keyboard into Caps Lock mode. Press FUNC, L again to cancel this feature.FUNC FUNC key A function key used to invoke special keyboard functions.CTRL CTRL key A control key used to generate control characters.ALT FUNC, CTRL Generates an Alt key function similar to the one found on a PC. Invokes special keyboard functions.F1 to F5 F1 to F5 keys Function keys F1 to F5. Their actions are controlled by application programs. F6 to F10 FUNC, F1 to FUNC, F5Function keys F6 to F10. Their actions are controlled by application programs. ENTER ENTER key Usually pressed after typing data or a command.CLEAR CLEAR key This key is controlled by applications. It usually allows you to escape from an application or screen, or clear the data entered in a field.Darken Screen FUNC, I Press to dim the display contrast. Brighten Screen FUNC, J Press to brighten display contrast.
5-6 VRC 6940 Product Reference GuideAdjusting BrightnessEntering DataTo enter data or issue commands, use the terminal’s keyboard, or attach a scanner (see Figure 5-4).Using the KeyboardUse the VRC 6940 keyboard to enter data and perform other tasks. The keyboard includes character keys (A - Z, 0 - 9), and modifier keys, described on page 5-4. When used in combination with one or more modifier keys, each character key can produce more than the usual one or two characters. Figure 5-3. VRC 6940 KeyboardTask Key Sequence CommentBrighten the screen. FUNC, J There are seven levels of brightness. Repeat the key sequence to reach the desired level of brightness.Darken the screen. FUNC, IToggle the keyboard backlight on or off.FUNC, K Not all terminals include a keyboard backlight option.
5-7Operating a VRC 6940Bar Code ScanningAttaching an External Bar Code Scanner1. Press the ON/OFF key to suspend the terminal.2. Remove the plug cover from the scanner port on the back of the terminal, shown in Figure 5-4. 3. Fit the scanner’s connector plug into the connector. Align the red dot on the end of the scanner cable with the red dot on the terminal’s scanner connector.4. Press the ON/OFF key to power the terminal on.Figure 5-4. Scanner PortUsing a Bar Code ScannerFor information on using a bar code scanner, consult the documentation that came with the scanner.Scanner PortBack of Terminal
5-8 VRC 6940 Product Reference GuideMoving a Terminal to a Different Power SourceTo move a VRC 6940 terminal from one power source to another:1. Save any data you are working with, and close all applications.2. Press the ON/OFF key to suspend the terminal.3. Make sure a power source is ready in the new location.4. Unplug the external power cable from the power connector on the back of the terminal.5. Remove the terminal from its current mounting.6. Move the terminal to the new location and mount it.7. Plug the external power cable into the power connector. Align the red dot on the end of the power cable with the red dot on the terminal’s power connector.8. Press the ON/OFF key to restart the terminal.Command ModeCommand Mode is an operating mode that allows you to use the terminal’s built-in system utilities. For example, you can use it to:!run Self-Test diagnostics to verify that the hardware is operating properly (see Appendix B)!transfer data, hex images or files from a host system to a VRC 6940 (see Chapter 4)To boot to Command Mode:1. Press the ON/OFF key to suspend the terminal.2. Press and hold the A and D keys.3. Press and release the ON/OFF key.4. Release the A and D keys.5. This menu appears on the terminal display:COMMAND MODESelect functionSelf test6. Press UP or DOWN arrows to display different options. When the option you want appears, press ENTER to select it.
6-1Chapter 6 TroubleshootingThis chapter provides basic problem-solving information for VRC 6940 terminals, including:!troubleshooting and error messages!warm and cold boot instructions!running the Memory Transfer utility to provide more troubleshooting dataTroubleshooting a VRC 6940 TerminalTable 6-1 describes some problems, their probable causes and some suggested solutions. Some of the situations are discussed further in the pages that follow.Table 6-1. Troubleshooting VRC 6940 TerminalsProblem ActionTerminal does not start Make sure the terminal is connected to a power source. If the external power cable has come unplugged, plug it back in and press the ON/OFF key to restart the terminal. Whether or not your session and data were saved depends on the internal battery and how long the terminal was disconnected. If the internal battery has not been depleted, the session will resume where it left off. See page 2-8 for more information on the internal battery.If the terminal uses a vehicle battery as a power source, check the vehicle battery. If it is depleted (dead), replace the vehicle battery.Terminal suspends suddenly (shuts off)The terminal suspends if it loses the connection to its main power source. Check the main power supply and power cable. You should be able to restart the terminal when you reconnect to a power source. Whether or not your session and data were saved depends on the internal battery and how long the terminal was disconnected. See page 2-8 for more information on the internal battery.
6-2 VRC 6940 Product Reference GuideStart-up process fails The terminal may be out of range of the Access Point (AP) and unable to communicate with the host computer. Move the terminal closer to the AP and try starting it again.If one of these messages appears:Boot server doesn’t exist. Boot server not configured for this terminal.1. The bootp server may not be running. Check the bootp server.2. The radio may not be functioning. Ping test the terminal (see page A-5).Power fault This message may appear if the last terminal shutdown was caused by a power failure. The message blinks in place for three seconds, then the terminal starts normally. A power failure can be caused by: •unplugging the terminal’s power cable when the internal battery is not fully charged•removing the vehicle battery •sudden main battery failureIf the internal battery is charged, it can maintain session data and your session will resume when you restore the main power source. If the internal battery is depleted the terminal cannot maintain session data, and you may lose unsaved data. See page 2-8 for more information on the internal battery. Display is blank The terminal may not be getting power. Make sure the power cable is securely connected to a reliable main power source (vehicle battery or AC) and to the Power Connector on the terminal. An application program did not download successfully.Repeat the download process using the procedures described in Transferring and Installing Application Programs on page 4-2.The display may be damaged or the video connector may be loose. Return the unit for servicing.Scanner does not operate Check to make sure the scanner is properly connected to the terminal. Re-connect the scanner and then reboot the terminal.Check the documentation for the scanner you are using.Table 6-1. Troubleshooting VRC 6940 TerminalsProblem Action
6-3TroubleshootingError MessagesThe terminals use ERR3000.SYS, a factory-installed program that displays error messages. Messages blink in place on the display screen for three seconds. The terminal beeps while the message is showing. Then the system returns to its previous status. Table 6-2 lists some sample messages. Application programs can change or disable messages. For more information, refer to the Series 3000 Application Programmer’s Guide (p/n 70-16308-XX).Table 6-2. Error MessagesScanner laser works but does not read bar codesThe bar code may not be legible. Try scanning another label of the same product, or type in the data manually.The scanner window may be dirty or severely scratched.If it is dirty, clean it with a soft, dry cloth moistened with an ammonia-based glass cleaner. If the scanner window is badly scratched, replace the scanner.The scanner may not be programmed or may be programmed incorrectly. Consult the reference guide that came with the scanner for configuration information.Application does not respondThis can happen if the terminal cannot connect to the Access Point (AP). If the terminal cannot connect to the AP, applications may continue to function until they need to transmit to the AP, then they simply stop responding. The terminal may be out of range of the AP. Move the terminal to a location closer to an AP and then try to restart it. See page 6-4 for more information.The host computer may be down. Check the host computer. There may be a problem with the application software. Do a Memory Transfer to transmit data from the VRC 6940 terminal to a Host PC, and have an application programmer examine the data. See page 6-8.Message ExplanationDouble Key Error You have pressed two keys at the same time. This message does not appear for the warm, cold, and Command Mode boot sequences described on page 6-5.Too Many Keys Three or more keys have been pressed at the same time. Power Fault The last power off was caused by a power failure. This occurs, for example, if power suddenly fails or is disconnected. For more information, see Tabl e 6- 1.Table 6-1. Troubleshooting VRC 6940 TerminalsProblem Action
6-4 VRC 6940 Product Reference GuideScanning ProblemsScanning may not work correctly if:!the scanner has not been configured, or is configured incorrectly!a contact wand scanner has been moved over the bar code too slowly, too quickly or at an uneven speed!a contact wand scanner has been moved diagonally across the bar code!a bar code scanner was held at the wrong angle or distance from the bar code!the scanner window is dirty or severely scratched!labels are smudged!labels are too dark, too light, or have poor color contrast!labels have highly reflective surfaces or coatings!labels are torn, folded, or wrinkledFor more information, consult the documentation for your scanner.Terminal Stops RespondingThis section describes what to do if a VRC 6940 terminal stops responding during a session. 1. Make Sure You are Within Range of an Access PointIf you have moved the terminal during use, make sure you are still within range of an Access Point (AP). Move back to a previous working location or to a location closer to the AP to see if it responds. See page 6-5 for information on checking Radio Connection status.2. Force the Terminal into SuspendIf you are within range of an AP, and the terminal is not responding, force the terminal into suspend and then restart it using the instructions below. To force the terminal into suspend without resetting it, press and hold the ON/OFF key for 15 seconds.
6-5Troubleshooting3. Restart After Forcing a SuspendIf you have forced the terminal into suspend, do not use the ON/OFF key to restart the terminal, as this causes the program to resume where it left off, trying to perform the same unsuccessful operation. 1. First, try to start the terminal with a warm boot, described on page 6-5. 2. If a warm boot does not correct the problem, try a cold boot, described on page 6-6. 3. If a cold boot does not correct the problem, try to boot into Command Mode, described on page 6-7. 4. If you cannot boot into Command Mode, contact Symbol Technical Support.Booting a VRC 6940Warm BootA warm boot resets the operating system and software while preserving the program and data that may be on the RAM disk. To perform a warm boot:1. Press the ON/OFF key to suspend the terminal.2. Press and hold the SHIFT and L keys.3. Press and release the ON/OFF key.4. Release the SHIFT and L keys.The VRC 6940 displays copyright, RAM size, expanded memory size, and other start-up information, depending on the system's configuration. If a warm boot successfully solves the problem, then the problem may have been caused by:!an error in the application program !a temporary communications problem in the networkConsider going back into the application that was running when the problem occurred, and try to recreate the problem. If there are network problems during the boot process, the terminal may display a message similar to this one:NOT ASSOCIATEDand a DOS prompt appears. From here, use the DIAG24 software to run ping tests or identify potential radio problems on the network. See page A-5.
6-6 VRC 6940 Product Reference GuideCold BootA cold boot fully resets the system and clears memory, including the RAM disk. It resets the software and allows you to restart applications. Any unsaved RAM data will be lost. Programs and data that have been stored in memory or on the RAM Disk are deleted. Non-Volatile Memory (NVM) is not affected. To perform a cold boot:1. Press the ON/OFF key to suspend the terminal.2. Press and hold the ENTER, F4 and F1 keys.3. Press and release the ON/OFF key.4. Release the ENTER, F4 and F1 keys.The VRC 6940 displays a copyright message, amount of RAM, and amount of expanded memory. Other messages are displayed as well, varying with the system configuration.As the terminal boots, watch for cold boot failure messages. You may need to reinstall a device driver. See Cold Boot Failure Messages, below.5. Follow the instructions in Chapter 4, Installing Software to reinstall software.CautionThe cold boot procedure erases all data and programs residing on the RAM Disk. All contents of the RAM disk are lost. If you have had problems starting the terminal, and cold booting (clearing memory) allows you to boot the terminal, then something in memory was causing the problem. Perform a Memory Transfer (see page 6-8) so that a programmer can perform application-specific troubleshooting. Then install the correct version of the software as described on page 4-2.Cold Boot Failure MessagesDuring a cold boot, the system briefly displays a status line for each driver as it loads, in this format: 0: Drivername #.##The line shows a status value, usually 0, followed by the driver’s name and version number. If the system halts at one of these lines and displays a status value other than 0, the displayed device driver failed to load properly. If such a failure occurs, the driver may need to be reinstalled. Contact Symbol Technical Support.
6-7TroubleshootingCommand ModeTo boot to Command Mode:1. Press the ON/OFF key to suspend the terminal.2. Press and hold the A and D keys.3. Press and release the ON/OFF key.4. Release the A and D keys. This terminal displays this screen:Figure 6-1. Command Mode screen5. Use the UP or DOWN arrows to display other options in place of Self Test. When the option you want appears, press ENTER to select it.If warm or cold booting do not clear your problem, but you can boot to Command Mode, the problem may be:!BIOS and hardware problems: to check the BIOS and hardware, use the Self Test function to check the system hardware (described on page A-2). If there is a hardware problem, contact Symbol Technical Support.!Application program error: if system hardware is running properly, check for an application error. Perform a Memory Transfer (described on page 6-8) so that a programmer can perform application-specific troubleshooting. Then install the correct version of the software as described on page 4-2.If Rebooting Fails1. Re-install software following the procedures described in Chapter 4, Installing Software.2. Contact your authorized Symbol Support representative or Technical Support Services.COMMAND MODESelect FunctionSelf Test
6-8 VRC 6940 Product Reference GuideMemory Transfer Analyzer (MTA) Utility The VRC 6940 has a Memory Transfer Analyzer (MTA) utility for application troubleshooting. It runs from Command Mode. Programmers can analyze applications using RCVHEX.EXE on a PC and the MTA on the VRC 6940. For more information on RCVHEX.EXE, see the Series 3000 Application Programmer’s Guide (p/n 70-16308-XX).The MTA transmits data from a VRC 6940 to the Host PC. You may transfer all of the memory, or a selected range. Transferring MemoryTo transfer memory from a VRC 6940 to a Host PC you will need:!a Host PC running the RCVHEX.EXE application!a VRC 6940 running the MTA!a null modem cable Note: Always suspend a VRC 6940 terminal before attaching or removing cables or adapters.To conduct the Memory Transfer:1. Start with the VRC 6940 terminal in suspend.2. Attach the null modem cable. a. Remove the RS-232 plug cover from the VRC 6940 terminal and plug the male connector into it. b. Attach the female connector to the Host PC (see Figure 4-1 on page 4-2), using an adapter if necessary.3. On the Host PC, exit to a DOS prompt and start the RCVHEX program. For an example, see Figure 6-2.a. For a filename, use an existing file, or create one by supplying the filename in the command. The example in Figure 6-2 shows a filename of memory.txt. b. Set the baud rate to match the baud rate for the VRC 6940. c. Leave Data Bits and Parity set to their defaults. d. Set the COM port as appropriate for your Host PC.e. Press ENTER to send the command.
6-9TroubleshootingFigure 6-2. Setting up to Receive a Memory Transfer4. Boot the VRC 6940 to Command Mode:a. Press and hold the A and D keys.b. Press and release the ON/OFF key.c. Release the A and D keys.d. The terminal boots to the function selector screen in Command Mode, as shown in Figure 6-3. Press UP or DOWN arrows to scroll through the options.Figure 6-3. Command Mode Screen5. When the Memory Transfer option appears, press ENTER. 6. The systems displays this message:Checking MemoryPlease WaitC:\>rcvhex memory.txt 38.4 1RCVHEX Filename to receive data(you can make one up)Baud Rate COM PortCommandCOMMAND MODESelect FunctionSelf Test
6-10 VRC 6940 Product Reference Guide7. Select a range of RAM to transfer. Press the UP and DOWN arrows to select an option (All, Range or None) and press ENTER. If you select All, the program skips to the summary screen. Continue at step 10. Figure 6-4. Selecting a Range of Memory to Transfer8. Specify a range of RAM by setting Start and End addresses. Use LEFT and RIGHT arrow keys to move the cursor to a digit that you want to set. Use UP and DOWN arrow keys to change the value. When the correct range appears, press ENTER.Figure 6-5. Selecting a Range of RAM to Transfer9. Specify a range of NVM to transfer. Use the arrow keys to select All or None, and then press ENTER.Figure 6-6. Selecting a Range of NVM to TransferRAMSelect OptionAllRAMUse arrow keysStart End00000 9FFFFNVMSelect OptionAll
6-11Troubleshooting10. If the VRC 6940 has EMS, use the arrow keys to specify the range to transfer. This prompt only appears if EMS is installed. Then press ENTER.Figure 6-7. Selecting a Range of EMS to Transfer11. The terminal displays the ranges you selected. Verify that they are correct. Figure 6-8 shows an example of what you might see. If the values are correct, press ENTER. If the values are not correct, press CLEAR to clear the fields, then select new values.Figure 6-8. Verifying Memory Transfer Settings12. Next, the VRC 6940 prompts you to set communications parameters. Use UP or DOWN arrows to select communications settings. The defaults are 9600 bps, 7 data bits and odd parity. Xon/xoff flow control may be necessary at 38400 bps. Select the parameters so that they match those used by RCVHEX on the Host PC.EMSUse arrow keysStart EndRAM 0000 9FFFNVM B135 DFFFEMS NoneCorrect? <ENT>
6-12 VRC 6940 Product Reference Guide13. Start the Memory Transfer. Make sure the Host PC is ready to receive data, and then press ENTER on the VRC 6940. While memory data is transferring, the VRC 6940 displays a report of the 1 KB range being transferred. The screen updates for every 1024 bytes (1 KB) of memory.Figure 6-9. Memory Transfer Status Screen14. Check the transmission results. When the transmission has completed, a status screen appears.A status of 0000 (all zeros) indicates a successful transfer; any other value means that the transfer failed. If the transfer failed, check the Memory Transfer and communications settings and try the procedure again.Figure 6-10. Status Screen when Memory Transfer is Complete15. Press CLEAR to return to the Command Mode main menu.Technical Support ContactsIf you cannot solve your technical problem with the information in this manual, contact Symbol Technical Support for assistance. Refer to the section, About This Manual, for Symbol Support telephone numbers.Memory TransferSending: 0D40Memory TransferStatus: 0000
7-1Chapter 7 MaintenanceA VRC 6940 terminal requires minimal maintenance. However, as with any electronic device, proper use and care will increase its life. This chapter provides basic maintenance instructions including:!maintaining the internal battery!storing the terminal !cleaningMaintaining the Internal BatteryThe VRC 6940 has an internal NiMh battery designed to maintain session data while the terminal is disconnected from its main power supply (e.g., while it is being moved from one power source to another). You cannot use the internal battery to operate the terminal. If you remove or disconnect the main power supply (vehicle battery or other external power source), the terminal shuts off and cannot be started again until you reconnect the external power. As long as the battery is charged, the terminal resumes from where it left off when you reconnect the main power supply. However, if the internal battery is not fully charged, the terminal may lose any unsaved data when you unplug it from the main power supply.The first time you use a terminal, connect it to a power source and turn it on to make sure that it is working. If the main power supply is not stable, there may be power interruptions that cause the terminal to reset itself during its first few hours of operation. If the terminal resets itself, you may lose unsaved data. To avoid this, we recommend that you plug in the terminal and allow it to charge for a minimum of two hours before using it. It takes 48 hours to fully charge the internal battery. A fully charged internal battery can maintain data for up to 72 hours if the unit is disconnected from its main power supply. This time is reduced if the radio maintains continuous communication with a host.
7-2 VRC 6940 Product Reference GuideStoring the TerminalIf you are storing the terminal, keep the internal battery charged by connecting the terminal to a main power supply with the terminal in suspend.If you store the terminal with no main power supply, the internal battery runs down. Before you can use the terminal, you will need to charge the internal battery. See Maintaining the Internal Battery on page 7-1.CleaningClean a VRC 6940 regularly to prevent long-term build up of dirt and grime on the keys, terminal case, and display.Washing the TerminalTo wash the terminal case and keyboard, use a clean, soft cloth dampened with a mild cleaner (for example, soap and water). The terminal is water-resistant; you do not have to remove it when you send a vehicle through a car wash, or clean it using high-pressure hoses. Use a mild soap. Do not spray wax onto the terminal. When washing is complete, wipe the terminal off with a clean, dry cloth. Note: If the terminal will be used in a freezer, dry it completely after washing.Washing the Terminal DisplayClean the terminal’s display screen with a regular ammonia-based glass cleaner. Spray it on a clean, soft, lint-free cloth, and then clean the display. Do not use paper products or rough cleaning towels because they can scratch the display screen.
A-1Appendix A Utilities and Diagnostic TestsVRC 6940 terminals include two sets of diagnostic applications:!Self Test diagnostics let you view current hardware settings and run basic diagnostic tests. See page A-2 for instructions on running the Self Tests.!DIAG24 diagnostics that allow you to ping the network and troubleshoot possible radio problems. See page A-12 for information on running the DIAG24 utility.The terminals also include these two utilities:!the CFG24 Configurator utility configures Spectrum24 radio communications. Chapter 3 describes how to configure the Spectrum24 radio.!the Flash utility lets you copy, delete or rename flash disk files.
A-2VRC 6940 Product Reference Guide VRC 6940 Self TestsRun the Self Tests if you suspect a problem with the terminal’s hardware. They test the terminal’s hardware components to make sure they are working correctly. To run the Self Tests, first boot to Command Mode:1. Suspend the terminal.2. Press and hold the A and D keys.3. Press and release the ON/OFF key.4. Release the A and D keys. The terminal displays the screen shown here:Figure A-1. The Command Mode Menu5. Press ENTER to display the Self Test menu, as shown in Figure A-2.Figure A-2. The Self Test Menu6. Use UP or DOWN arrow keys to display the names of the Self Tests. Then press ENTER to select and run a test. Config Screen 1 lets you run a keyboard test that requires you to press keys. The other tests all run automatically. Ta ble A-1 summarizes Self Test details. COMMAND MODESelect FunctionSelf TestCOMMAND MODESelf TestConfig Screen 1
A-3Utilities and Diagnostic Tests7. To end a Self Test and return to the Self Test menu, press CLEAR. To return to the Command Mode function menu, press CLEAR again.Table A-1. Self Test Summary Self Test What You Should See CommentsConfig Screen 1 Config Screen 1Vers: 6940 1.10-00Time: 09:45:23Date: 01-01-1980-2Nicd: Good Main: GoodPower Src: ChargerCOM1: S1 10100COM2: None•Displays the terminal type and version, time, date, main and backup battery condition, current power source, and serial port status.•Make sure the values shown for Vers, Nicd, Power Src, and COM1 on the terminal match those shown here.•Allows you to perform the keyboard test described on page A-4.•Press CLEAR to return to the Self Test menu.Config Screen 2 Config Screen 2LCD: 0 LCD TYPE:08KBD ID:00 GA REV:00Wake cause Cmd Mode•Reports keyboard and display information.•Make sure the values for LCD, LCD TYPE and KBD ID on the terminal match those shown here.•Press CLEAR to return to the Self Test menu.Memory Screen When the test completes, these results appear:Memory Screen 2ROM CRC: 0 NVM CRC: 10RAM:0640K Pass SEMS:0000K None•Test s ROM, RAM and EMS (Expanded) memory, and reports the amount of RAM and EMS.•Takes about one minute to complete.•Make sure the values shown for CRC match those shown here. •The RAM test result must be Pass.•Press CLEAR to return to the Self Test menu.Fill Screen Test Pattern •The entire screen fills with a test pattern: make sure that it all displays clearly.•Press CLEAR to return to the Self Test menu.Set RTC Screen Set RTC ScreenTime: 01:59:13Date: 01-01-1980-2•Lets you set the real-time clock (time and date).•UP/DOWN arrows change the value at the cursor. LEFT/RIGHT arrows move the cursor.•Set the time and press ENTER.•Set the date and press ENTER. Format: MM-DD-YYYY •Press CLEAR to return to the Self Test menu.
A-4VRC 6940 Product Reference Guide Keyboard TestThe Config Screen 1 Self Test lets you test any keys except CLEAR and the ON/OFF key. When you press a key, the program displays the corresponding key code to the right of the Config Screen 1 test name on the top line. Ta ble A-2 shows the codes for each key. Table A-2. 54-Key Keyboard Test CodesKey Code Key Code Key CodeF1 00 718R36F2 01 819S37F3 02 920T38F4 03 Ctrl 21 U39F5 04 H22140Left arrow 5 I23241Right arrow 6 J24342Up arrow 7 K25V43Down arrow 8 L26W44Func 9 M27X45On/Off N28Y46A11429Z47B12530Shift 48C13631Backspace 49D14Clear 39 (clears screen)_50E15O33051F16P34.52G17Q35Enter 53
A-5Utilities and Diagnostic TestsDIAG24 Diagnostics UtilityThe DIAG24 Diagnostics utility lets you ping an Access Point (AP) on the network as a way to identify possible problems with wireless network communication. DIAG24 has two options, with the same series of set-up menus for both options.DIAG24 SetupTo run the utility and set up for the tests:1. Boot the terminal to a DOS prompt. The DOS prompt appears if you boot the terminal and it cannot connect to the network.2. At the DOS prompt, type DIAG24 and press ENTER to display the screen shown in Figure A-3. 3. Press 1 to select the AP Ping Test or 2 to select Field Diagnostics. See Tab l e A -3 for test option descriptions.Figure A-3. The DIAG24 menuTable A-3. DIAG24 Diagnostic Test DetailsTest Name Purpose What it ChecksAP Ping Test Runs a series of ping tests that are not re-tried on transmission errors. This test is intrusive, as pings are sent as fast as possible.Cnt: ping test count.Err: number of errors (lost packets).AP: ID number of the Access Point being pinged.RS: Radio Signal Strength Indicator (RSSI) value. The RSSI range is 0 - 99. RSSI should be over 25 for a reliable connection.Field Diagnostics Identifies potential radio problems. It determines whether or not a communication problem is in the radio portion of the network.Cnt: ping test count.Err: number of errors (lost packets).Rty: number of retries.ms: number of milliseconds for the ping test.AP: ID number of the Access Point being pinged.DIAG24 ver x.xx1. AP Ping Test2. Field Diagnostics Select [1-2 or ‘Q’]
A-6VRC 6940 Product Reference Guide Note: DIAG24 uses a message file (msg.msg) that it reads from the same drive and directory as the DIAG24 software. If you see corrupted screens, the message file may be missing.4. Select a Roaming Mode. If you want the terminal to ping an AP, but roam between APs as you move around, select Roaming Enabled. If you want to ping a specific AP, select that AP identifier from the list. If more APs are in range than can fit on one screen, then the last selection will be More. Selecting this will present more available APs for selection.Figure A-4 shows a Roaming Enabled option, followed by a list of AP identifiers. For each AP identifier, bb represents the AP identifier (or BSS identifier) and eeeeeeeeeeee represents the 48-bit MAC address of the AP in hexadecimal notation.Figure A-4. Selecting a Roaming Mode5. Press 1, 2 or 3 to select the ping message size:Figure A-5. Selecting Ping Message Size<Test Mode>1. Roaming Enabled2. bb--eeeeeeeeeeee3. bb--eeeeeeeeeeee4. bb--eeeeeeeeeeee....n. bb--eeeeeeeeeeeeSelect[1-n or 'Q']:<Test Mode>MESSAGE SIZE1. 100 bytes2. 256 bytes3. 512 bytesSelect[1-3 or 'Q']:
A-7Utilities and Diagnostic Tests6. Press 1, 2, 3 or 4 to select the number of pings you want to perform:Figure A-6. Selecting the Number of Pings7. Press 1 or 2 to determine whether or not errors will cause the terminal to beep:Figure A-7. Selecting the Number of PingsAfter you select the Beep Mode, the test starts (AP Ping Test or Field Diagnostics test).<Test Mode>NUMBER OF PINGS1. 100 pings2. 500 pings3. 1000 pings4. Non-stopSelect[1-4 or 'Q']:<Test Mode>BEEP MODE1. Beep on error2. SilentSelect[1-2 or 'Q']:
A-8VRC 6940 Product Reference Guide Ping TestDuring the AP Ping Test the terminal displays and updates this screen:Figure A-8. The AP Ping TestTab l e A - 4 describes the field contents. The reports wrap so that the last five message reports are visible. If you selected non-stop mode during setup, and the Ping Test or Error count fields overflow, then the first detail line shows the most significant digits of the count, prefixed with an asterisk.Table A-4. AP Ping Test Field DetailsField DescriptionAssociation Indicator A — the radio is associating with an AP. U — the radio is not associating with an AP. Ping Test Count Displays the number of each test as it runs.Error Count Displays the cumulative number of errors that have occurred. Access Point ID The ID of the AP with which the terminal is associating.RSSI Indicator The Radio Signal Strength Indicator (RSSI) value. The RSSI range is 0 - 99. RSSI should be over 25 for a reliable connection.AP PING TESTA Cnt Err AP RS 56 0 18 36 57 0 18 36 58 0 18 36 59 1 18 36 TMO 60 1 18 36Press ‘Q’ to QuitIndicates an errorPing Test Association Error Count Access Point IDRSSI IndicatorIndicatorCount
A-9Utilities and Diagnostic TestsWhen the test stops, the terminal displays a summary screen: Figure A-9. Sample AP Ping Test Results ScreenThe summary shows:!the elapsed time of the test!total pings transmitted!packet size used !retry count !number of timeoutsTo repeat the test with the same parameters, press R. Press Q or CLEAR to end the test and return to the DIAG24 menu.AP PING TESTTotal secs = 7.4RF Secs = 6.7Pings = 100Packet size = 100Timeouts = 4[R]epeat or [Q]uit
A-10VRC 6940 Product Reference Guide Field Diagnostic TestDuring the Field Diagnostic Test the terminal displays and updates this screen:Figure A-10. The Field Diagnostic TestTab l e A - 5 describes the field contents. The reports wrap so that the last five message reports are visible. If you selected non-stop mode during setup, and the Ping Test or Error count fields overflow, then the first detail line shows the most significant digits of the count, prefixed with an asterisk.Table A-5. Field Diagnostic Test Field DetailsField DescriptionAssociation Indicator A — the radio is associating with an AP. U — the radio is not associating with an AP. Ping Test Count Displays the number of each test as it runs.Error Count Displays the cumulative number of errors that have occurred. Retry Count The retry count for this message.Timer The round-trip time in milliseconds, or an indication of error type, if there was an error.Access Point ID The ID of the AP with which the terminal is associating.AP PING TESTA Cnt Err Rty ms AP 56 0 0 165 18 57 0 0 55 18 58 1 1 TMO 18 59 1 0 220 18 60 1 0 58 18Press ‘Q’ to QuitPing Test Association Error CountAccess Point IDIndicatorCountRetry CountTimer
A-11Utilities and Diagnostic TestsWhen the test stops, the terminal displays a summary screen: Figure A-11. The Field Diagnostic Test Results ScreenThe summary shows:!the elapsed time of the test!total pings transmitted!packet size used !retry count !number of timeoutsTo repeat the test with the same parameters, press R. Press Q or CLEAR to end the test and return to the DIAG24 menu.FIELD DIAGNOSTICSTotal secs = 8.2RF Secs = 4.9Pings = 100Packet size = 100Timeouts = 4[R]epeat or [Q]uit
A-12VRC 6940 Product Reference Guide CFG24 Configurator UtilityThe CFG24 Spectrum24 Configurator utility lets you:!configure radio communication parameters!initialize a configuration stored in the NET.CFG file in the terminal’s current directoryCFG24 updates NET.CFG settings every time it runs. It saves parameter settings to the radio flash storage initialization area, and then checks for an association between the terminal and an Access Point (AP).Note: The Spectrum24 DOS ODI driver must be installed before you use CFG24.Starting the UtilityThere are two ways to start the utility:1. The first time you power up a VRC 6940 terminal the terminal loads essential utilities and system drivers and displays the CFG24 Configurator utility as shown in Figure A-12. 2. Alternate method: go to a DOS prompt and type: CFG24 [-I]. How you get to a DOS prompt depends on what applications have been loaded onto the terminal, and how they have been programmed. The DOS prompt may also appear if you boot the terminal and it cannot connect to the network.The optional parameter [-I] initializes the current configuration. If you are configuring the terminal for the first time, this option starts the utility and displays the Configurator menu.Initializing the RadioWhen you use the [-I] parameter, the utility initializes the radio using the settings currently stored in NET.CFG. Default settings:NET_ID: 101Terminal IP address: 10.x.y.z (x, y, and z are the last 3 bytes of the IEEE address)Subnet mask: 255.0.0.0Default router: 0.0.0.0
A-13Utilities and Diagnostic TestsThe Configurator MenuThe Configurator menu appears the first time you start the terminal, or if you launch the CFG24 program without parameters. Figure A-12 shows Configurator menu options. Note that some terminals do not allow you to change the Subnet Mask, Default Router, and Terminal IP addresses.If you are using Spectrum24 802.11 protocol-based software, the menu shows the ESS ID option. For Spectrum24 Spring protocol-based software, the menu shows Net ID.Figure A-12. The CFG24 Configurator MenuView Config ParametersThe View config option shows the terminal’s IEEE address, IP address, firmware version number, and ESS ID or Net ID. To display the existing configuration parameters:1. Select View config. Figure A-13 shows an example of the screen that appears.2. Press CLEAR or ENTER to return to the Configurator menu.Figure A-13. Viewing Configuration Parametersreverse video Configuration Note: Navigating the MenusTo navigate through the menus:•Press UP or DOWN arrow keys to scroll through menu options.•To select, highlight the menu option you want, then press ENTER. A highlighted op-tion shows up in reverse video . •To erase part of an entry, press BACK.•To return to a previous menu press CLEAR. •To exit to a DOS prompt, return to the Con-figurator menu and press CLEAR.reverse videoCONFIGURATOR X.XXView configESS IdSubnet MaskDefault RouterMU IP AddressDiversityCLR, Enter^^VIEW CONFIG Terminal IEEE addr00:A0:F8:28:78:EFMU IP Address0.0.0.0FW: V3.29 981116Net ID=101CLR, Enter
A-14VRC 6940 Product Reference Guide ESS ID or Net ID An ESS or Net ID identifies a radio network and differentiates between radio networks. All equipment on one network must use the same ESS or Net ID. Spectrum24 terminals can support the Spectrum24 802.11 or Spectrum24 Spring protocols. The menu displays the ESS ID or Net ID, depending on which protocol you are using.Terminals using Spectrum24 with the 802.11 protocol require an ES SID. The ES SID is a a 32-character alphanumeric value. Terminals using Spectrum24 with the Spring proprietary network protocol require a Ne tID. The Ne tID is a three-character hexadecimal value. To configure a terminal’s ESS ID or NET ID:1. Select ESS ID or Net ID. Figure A-14 shows the entry for a Spring-based terminal.2. Erase all or part of the entry, and type a new value from 100 to 1FE. 3. Press CLEAR or ENTER to return to the Configurator menu.Figure A-14. Setting a NET IDSubnet Mask To configure the Subnet Mask:1. Select Subnet Mask to display the screen shown in Figure A-15.2. Erase all or part of the entry.3. Type an IP address in decimal using the ddd.ddd.ddd.ddd format.4. Press CLEAR or ENTER to return to the main menu.NET ID Enter Net Id:150BkSp, CLR, Enter
A-15Utilities and Diagnostic TestsFigure A-15. Setting a Subnet MaskDefault RouterThe Default Router address is the node address that receives all packets destined for remote networks. To configure the Default Router:1. Select Default Router to display the screen shown in Figure A-16.2. Erase all or part of the entry.3. Type an IP address in decimal using the ddd.ddd.ddd.ddd format.4. Press CLEAR or ENTER to return to the main menu.Figure A-16. Setting a Default RouterSUBNET MASKEnter SN Mask:255.255.255.0BkSp, CLR, EnterDEFAULT ROUTEREnter D Router:0.0.0.0BkSp, CLR, Enter
A-16VRC 6940 Product Reference Guide Terminal IP AddressIf a boot server is not allocating IP addresses, you can set a Terminal IP Address:1. Select MU IP Address to display the screen shown in Figure A-17.2. Erase all or part of the entry.3. Type an IP address in decimal using the ddd.ddd.ddd.ddd format.4. Press CLEAR or ENTER to return to the main menu.Figure A-17. Setting a Terminal IP AddressDiversityTo configure Diversity:1. Select Diversity to display the screen shown in Figure A-18.2. Use the UP or DOWN arrows to select an option. Always set Diversity set to No on VRC 6940 terminals with only one antenna.3. Press CLEAR or ENTER to return to the main menu.Figure A-18. Configuring DiversityMU IP ADDRESS Enter IP address:0.0.0.0BkSp, CLR, EnterDIVERSITY2 antennas (Y/N)NoBkSp, CLR, Enter
A-17Utilities and Diagnostic TestsMU Sleep ModeIf you set MU Sleep Mode On, the radio stays powered on when the rest of the terminal powers down because of inactivity. You can wake the terminal by sending a message directly to it, but broadcast messages will not wake it. If you set the switch Off, the radio powers off if the rest of the terminal powers down because of inactivity. The default setting is On. To configure MU Sleep Mode:1. Select MU Sleep Mode to display the screen shown in Figure A-19.2. Use the UP or DOWN arrow keys to select On or Off.3. Press CLEAR or ENTER to return to the main menu.Figure A-19. Setting Sleep ModeBoot ModeThis option determines what network communication parameters the terminal will use when it boots. To configure Boot Mode:1. Select Boot Mode to display the screen shown in Figure A-20.2. Use the UP or DOWN arrow keys to select Boot, DHCP, or Manual Entry options.3. Press CLEAR or ENTER to return to the main menu.Figure A-20. Setting Boot ModeMU SLEEP MODERadio State:OnBkSp, CLR, EnterBOOT MODEGet IP from:Manual EntryBkSp, CLR, Enter
A-18VRC 6940 Product Reference Guide Boot Mode Options:Power ManagementIf power management is set to PSP (the default), the radio only powers up if there is traffic on the network. Because the radio is not always in a ready state when a message is sent to it, PSP mode slows response times. If power management is set to CAM, the radio is always ready to receive. To configure Power Management:1. Select Pwr Management to display the screen shown in Figure A-21.2. Use the UP or DOWN arrow keys to select PSP or CAM, then press ENTER.3. Press CLEAR or ENTER to return to the main menu.Figure A-21. Configuring Power ManagementBoot Broadcasts a TCP/IP BOOTP request to the network. If they have been configured to do so, boot servers on the network send a response. The terminal accepts the first valid response it receives, which contains a terminal IP address and other network parameters that override any parameters entered through CFG24.DHCP Uses the same process as the Boot option but uses the Dynamic Host Configuration Protocol.Manual EntryThe terminal does not broadcast any configuration messages to the network. It uses the current network parameter values (saved in the radio flash) to connect to the network.PWER MANAGEMENTRadio Pwr Mode:PSPBkSp, CLR, Enter
A-19Utilities and Diagnostic TestsBuffersTo configure the terminal Buffers:1. Select Buffers to display the screen shown in Figure A-22.2. Use the UP or DOWN arrow keys to select 4, 8,or 12, then press ENTER.3. Press CLEAR or ENTER to return to the main menu.Figure A-22. Configuring the BuffersRe-Transmit DelayTo configure the Re-Transmit Delay:1. Select ReXmit Delay to display the screen shown in Figure A-23.2. Use the UP or DOWN arrow keys to select short or long, then press ENTER.3. Press CLEAR or ENTER to return to the main menu. Figure A-23. Setting the Re-Transmit DelayBUFFERSEnter Buf Cnt:8BkSp, CLR, EnterREXMIT DELAYEnter Delay:shortBkSp, CLR, Enter
A-20VRC 6940 Product Reference Guide Rate Control To configure the Rate Control:1. Select Rate Control to display the screen shown in Figure A-24.2. Use the UP or DOWN arrow keys to select 1Mb only, 2Mb only, or 1Mb and 2 Mb options, then press ENTER. For Spring protocol, 1Mb is the only choice.Figure A-24. Setting the Rate ControlScanner/RF OperationTo configure the Scanner/RF operation:1. Select Scan/RF Op to display the screen shown in Figure A-24.2. Use the UP or DOWN arrow keys to select Concurrent Op or Scan stops RF. Then press ENTER. If you want an attached scanner and the radio to both operate at the same time, select Concurrent Op. If you want radio operation to be suspended during a scan, select Scan stops RF. Figure A-25. Setting Scanner/RF OperationRATE CONTROLTX Rate:1 MB onlyBkSp, CLR, EnterSCAN/RF OPSelect Op Mode:Concurrent OpBkSp, CLR, Enter
A-21Utilities and Diagnostic TestsFlash UtilityThe flash.bat utility lets you copy, delete or rename files on the flash disk: it switches the flash disk to write mode, performs the operation, and then returns the flash disk to read-only mode. The LWP software copies flash.bat onto the E:\ drive the first time you start the terminal. Deleting To delete a named file from the current directory of the flash disk:flash del filename.extTo delete all the files in the root directory of the flash disk:flash del \*.*Important! You don’t have to name the E: drive to erase all of the root directory files.CopyingTo copy the protocol stack configuration file (net.cfg) from the current directory to the root directory on the flash disk:flash copy net.cfg \To copy a file (filename.ext) from the SVTP directory on the flash disk to the STEP directory on the flash disk:flash copy e:\svtp\filename.ext \stepNote: If you are copying from the E:\ drive, specify it on the first command parameter, but do NOT specify it on the second parameter, where it is assumed. You can only use this option to copy to the flash drive.RenamingTo rename netcfg.1 in the flash disk root directory to net.cfg:flash ren \netcfg.1 net.cfgNormal restrictions for a DOS file re-name apply, i.e., netcfg.1 must exist and net.cfg must not exist in the directory before the command is executed.
A-22VRC 6940 Product Reference Guide
B-1Appendix B Software EnvironmentThis section describes the software environment for a VRC 6940 terminal. A VRC 6940 has four drives as described in Tab le B-1:Table B-1. VRC 6940 DrivesDrive Size Type ContentsA:\ 256 Kb Flash, EPROMThis drive contains: • BIOS, including the Command Mode menus and commands and Self-Test software• Essential system drivers• DOSB:\ 256 Kb Flash, EEPROMThis drive is the main space for user applications. For the first installation, it contains the LWP hex image.The first time you boot a terminal, LWP copies utilities and applications onto the E:\ drive. When you load user applications onto the terminal, they overwrite LWP, but the utilities and applications stay on the E:\ drive.See Chapter 4 for information on loading applications into this space.D:\ 160 Kb RAM This drive contains the net.cfg file and user space. Commands in the b:\autoexec.bat file can write files to this disk. The default size is 160 Kb, but this size can be changed by b:\init.exe. For information on setting the D drive size, see Chapter 5 of the Series 3000 Application Programmer’s Guide (p/n 70-16308-XX).
B-2VRC 6940 Product Reference Guide Boot SequenceThe first time a new terminal powers up:1. A:\config.sys loads drivers.2. A:\autoexec.bat calls and runs B:\autoexec.bat. 3. B:\autoexec.bat loads the application files contained in the LWP.HEX file by decompressing them into an application subdirectory on E:\ (see LAN WorkPlace (LWP) Software on page B-3). 4. A second batch file displays a menu with terminal configuration options.5. A third batch file loads the protocol stack to enable application-to-host connections. If the terminal boots and the Spectrum24 radio card has no parameters, the terminal runs the CFG24 software so that you can configure the radio card. Chapter 3 describes how to configure the radio card.If the Spectrum24 radio card has parameters, the terminal tries to connect to an AP. If it can connect, the terminal starts a session and continues to boot normally. If it can’t find an AP, the screen displays a NOT ASSOCIATED message, and a DOS prompt appears. At this point you can run the DIAG24 ping utility (see page 6-5).After you have started the terminal, and LWP.HEX has installed the utility files into their appropriate directories, you can install end-user applications onto the terminal. When you transfer a new HEX image onto the terminal, it overwrites the LWP.HEX image. The Program Loader then installs the new HEX image by converting the ASCII data stream into files to be stored in non-volatile flash memory on the B:\ drive. E: 1MB Flash This drive is normally read-only, although it can be controlled by application programming on drive B. The LWP hex image copies these utilities into this space:• BOOTP• CFG24• DIAG24• FLASH.BATTable B-1. VRC 6940 DrivesDrive Size Type Contents
B-3Software EnvironmentLAN WorkPlace (LWP) SoftwareAll VRC 6940 terminals have a copy of LWP.HEX loaded at the factory. The first time you start the terminal, it installs the utilities listed below onto the E:\drive. Software FilesTab l e B-2 shows the contents of each drive after the LWP hex image is loaded on E:\ drive:CFG24 The CFG24 Configurator utility that allows you to configure the Spectrum24 radio. You can run it from a DOS prompt. See page A-12 for more information.DIAG24 The DIAG24 Diagnostics utility that allows you to run Access Point ping tests. You can run it from a DOS prompt. See page A-5 for more information.BOOTP BOOTP boot utility. It requests and receives an IP address and then sets up communications parameters for use by other parts of the system. It executes automatically during start-up procedures. Do not run it from a DOS prompt. See page A-17 for more information on configuring boot mode.FLASH A batch file that provides some flash disk housekeeping functions. You can run it from a DOS prompt. See page A-21 for more information.Table B-2. VRC 6940: Software FilesDirectory File Name DescriptionA:\ LOADER.EXE An NVM loader utility that can be used in place of the Command Mode Program Loader. For more information, see the Series 3000 Application Programmer’s Reference Manual (p/n 70-16309-XX).SHELL.COM The DOS command shell.AUTOEXEC.BAT Calls B:\autoexec.bat, if it exists, and executes it. If there is no B:\ drive, the terminal boots into Command Mode. DSKBCHK.COM Checks to see if the terminal has been configured with a B:\ drive. For more information, see the Series 3000 Application Programmer’s Reference Manual (p/n 70-16309-XX).
B-4VRC 6940 Product Reference Guide A:\ (cont’d)2WAY3000.SYS A Series 3000 Protocol Device Driver. For more information, see the Series 3000 System Software Manual (p/n 70-16310-XX).S1.BIN A Spectrum One radio driver.CONFIG.SYS A configuration file that loads essential drivers and files. It loads A:\shell.comB:\ COMMAND.COM A command batch file.AUTOEXEC.BAT Loads the application files contained in the LWP.HEX file by decompressing them into an application subdirectory on E:\ drive.ERR3000.SYS An error message driver.PKUNZJR.COM An unzip utility.FLASHDSK.SYS The flash disk driver.FLSHCTL.EXE Switches the flash disk between read-write and read-only modes.FLSHFMT.EXE A utility used to format the flash disk.D:\ NET.CFG The Spectrum24 configuration file. This file is configured by the CFG24 Configurator utility._AP.BAT Built by FLSHAUTO.BAT for use in the warm boot process.E:\ NET.CFG Configuration file used by LSL.COM, SLAODI3K.COM, and TCPIP.EXE to get configuration parameters.FLSHAUTO.BAT Initialization batch file. Loads the radio driver and the TCP/IP stack.FLSHAUT1.BAT Builds the _AP.bat file for use.MSG.MSG File used by the DIAG24 Ping utility.Table B-2. VRC 6940: Software FilesDirectory File Name Description
B-5Software EnvironmentE:\(cont’d)APPINIT.COM Scans the flash disk for valid applications. If it finds more than one, it displays an application selection menu. A valid RF application has a home directory in the flash disk’s root directory containing a file called RUN.BAT. This is how the system knows which applications are present, and which are batch applications.CBT.COM Utility to re-initialize (cold boot) the terminal.WBT.COM Utility to re-initialize (warm boot) the application.WAIT.EXE A command used in batch files to pause the display for a specified number of seconds. The pause can be interrupted with the CTRL-FUNC-1 key sequence. If interrupted, the command returns an errorlevel 1.GETSTR.EXE Prompts for keyboard input, which is placed as a character string in the environment variable _STR. Used to customize utility files for building an application HEX during developer kit installation.LSL.COM Novell’s Netware Link Support Layer software. Used to access the physical network, in this case a PCMCIA radio card.DIAG24.EXE A diagnostic ping utility for diagnosing possible radio problems. See page A-5 for more information.CFG24.EXE A utility for configuring Spectrum24 radio parameters. See page A-12 for more information.BOOTP A utility that requests and receives an IP address and sets up communications parameters for use by other parts of the system. It runs automatically during start-up. Do not run it from a DOS prompt.TCPIP.EXE Novell’s Lan Workplace stack version 5.0.PIPCT.EXE Used to save and restore part of the BIOS work area overwritten when TCPIP.EXE is loaded.SS.BAT Batch file to run DIAG24 for site survey purposes.Table B-2. VRC 6940: Software FilesDirectory File Name Description
B-6VRC 6940 Product Reference Guide E:\(cont’d)TDREM.EXE Remote end of serial link used to transfer files to and from a terminal. Used mainly during development but also a useful diagnostic tool.FLASH.BAT A flash utility for copying, renaming or deleting files from flash memory. Useful in development for transferring single files to flash disk. See page A-21 for more information.RAMINIT.EXE Copies _AP.BAT to new RAM disk. The _AP.BAT is saved by a previous RAMCHG. The _AP.BAT must be smaller than 120 bytes.RAMCHG.EXE Changes the RAM disk size and warm boots the terminal. RAMCHGnn changes the RAM disk to nnKBytes.RF_VER.COM Radio utility file.RFOFF.COM Used for batch application to unconditionally turn off the radio adapter to conserve battery life.UPD802 (sub-directory)Stores files to update radio to become 802.11 compatible.TFTPC.COM Encapsulation for TFTP.EXE to allow trapping of error messages. This allows the re-trying of a file transfer if an error is found.TFTP.EXE Trivial File Transfer Protocol software.TFTP.MSG TFTP message file.LWP.MSG TCP/IP message file.BGET.BAT Batch file for doing TFTP file transfers from a server to the flash disk. If the file already exists on the current directory on the flash disk (normally the current application’s home directory), the file is not transferred. BGET.BAT calls FGET.BAT to perform the actual transfer.Table B-2. VRC 6940: Software FilesDirectory File Name Description
B-7Software EnvironmentE:\(cont’d)FGET.BAT Batch file for doing TFTP file transfers from a server to the flash disk. If the transfer fails it is retried. The server IP address is picked up from the environment variable SIADDR, which is set up by BOOTP.COM if either a BOOTP or DHCP process is performed.UPDATE.BAT Batch file used for an over-the-air software update facility. It downloads a ZIP file and unzips it into the application directory. The ZIP file is the same file that was placed in the application HEX.CHK_ID.EXE Checks to see if the ident.txt files on the paths specified in the command-line are identical. Used in apphex.bat to check for the need to copy the application files to the flash disk.GETNUM.EXE Returns an errorlevel depending on a single key hit. Returns errorlevel n if the numeric key ‘n’ is pressed. All other keys return errorlevel 99. Used to make menu selections in batch files.IDENT.TXT Used to identify a particular HEX build.SLAODI3K.COM Wireless LAN adapter driver.APP (sub-directory)Applications stored in this directory.Table B-2. VRC 6940: Software FilesDirectory File Name Description
B-8VRC 6940 Product Reference Guide
C-1Appendix C Keyboard LayoutsThis section describes the characters and character sequences produced by the 54-key keyboard using the default translation tables. Ta bl e C-1 displays the information in table format. Figures C-1 to C-10 show keyboard illustrations.These key definitions can be changed by application programs. Refer to the Series 3000 Application Programmer's Reference Manual (p/n 70-16309-XX) and the Series 3000 System Software Manual (p/n 70-16310-XX) for additional information on keyboard translation.Table C-1. VRC 6940 Key CombinationsUnmodified Shift Caplock Ctrl Func Shift+Func Func+Ctrl Ctrl+Func Alt+FuncEnter Enter Enter Line feed = + none none noneClear Clear Clear Clear Clear Clear none Clear noneCtrl Ctrl Ctrl none Alt Alt none Alt noneShift Shift Shift none none none none Shift noneFunc Func Func none none none Func none nonePwr Pwr Pwr Pwr Pwr Pwr Pwr Pwr PwraA A Ctrl, A a A Alt, A none nonebB B Ctrl, B b B Alt, B Ctrl, B Alt, BcC C Ctrl, C c C Alt, C Ctrl, C Alt, CdD D Ctrl, D d D Alt, D Ctrl, D Alt, DeE E Ctrl, E e E Alt, E Ctrl, E Alt, EfF F Ctrl, F f F Alt, F Ctrl, F Alt, FgG G Ctrl, G g G Alt, G Ctrl, G Alt, G
C-2VRC 6940 Product Reference Guide hH H Ctrl, H F1 Shift, F1 Alt, H Ctrl, F1 Alt, F1iI I Ctrl, I Dark Dark Alt, I Dark DarkjJ J Ctrl, J Light Light Alt, J Light LightkKKCtrl, KBckLt1BckLt1Alt, K BckLt1BckLt1lL L Ctrl, L Caplock Caplock Alt, L Caplock CaplockmM M Ctrl, M F9 Shift, F9 Alt, M Ctrl, F9 Alt, F9nN N Ctrl, N Numlock Numlock Alt, N none NumlockoO O Ctrl, O o O Alt, O Ctrl, O Alt, OpP P Ctrl, P p P Alt, P Ctrl, P Alt, PqQ Q Ctrl, Q q Q Alt, Q Ctrl, Q Alt, QrR R Ctrl, R r R Alt, R Ctrl, R Alt, RsS S Ctrl, S F10 Shift, F10 Alt, S Ctrl, F10 Alt, F10tT T Ctrl, T t T Alt, T Ctrl, T Alt, TuU U Ctrl, U + + Alt, U none nonevV V Ctrl, V - - Alt, V none nonewW W Ctrl, W * none Alt, W Ctrl, * nonexX X Ctrl, X / ? Alt, X none noneyY Y Ctrl, Y y Y Alt, Y Ctrl, Y Alt, YzZ Z Ctrl, Z z Z Alt, Z Ctrl, Z Alt, ZBack Backspace Backspace Ctrl, Break Space Space none Space noneLeft Arrow 4 Left Arrow Ctrl, Left ArrowHome 7 none Ctrl, Home noneRight Arrow 6Right ArrowCtrl, Right ArrowEnd 1 none Ctrl, End noneUp Arrow 8 Up Arrow Ctrl, Up ArrowPage Up 9 none Ctrl, Page UpnoneDwn Arrow 2 Dwn Arrow Ctrl, Dwn ArrowPage Down 3 none Ctrl, Page Downnone0) 0 none Ins 0 Alt, 0 none none1 Functional only on units equipped with the keyboard backlight option.Table C-1. VRC 6940 Key CombinationsUnmodified Shift Caplock Ctrl Func Shift+Func Func+Ctrl Ctrl+Func Alt+Func
C-3Keyboard Layouts1! 1 none ’“ Alt, 1 none none2@ 2 Ctrl, 2 , < Alt, 2 none none3# 3 none / ? Alt, 3 none none4$ 4 none [ { Alt, 4 Ctrl, 4 none5% 5 none ] } Alt, 5 Ctrl, 5 none6^ 6 Ctrl, 6 ; : Alt, 6 none none7& 7 none ‘~ Alt, 7 none none8* 8 none = + Alt, 8 none Alt, =9( 9 none \ | Alt, 9 Ctrl, \ none-_ - Ctrl, - - _ Alt, - Ctrl, - Alt, -.> . none Del . none none noneF1 Shift, F1 F1 Ctrl, F1 F6 Shift, F6 Alt, F1 Ctrl, F6 Alt, F6F2 Shift, F2 F2 Ctrl, F2 F7 Shift, F7 Alt, F2 Ctrl, F7 Alt, F7F3 Shift, F3 F3 Ctrl, 3 F8 Shift, F8 Alt, F3 Ctrl, F8 Alt, F8F4 Shift, F4 F4 Ctrl, F4 F9 Shift, F9 Alt, F4 Ctrl, F9 Alt, F9F5 Shift, F5 F5 Ctrl, F5 F10 Shift, F10 Alt, F5 Ctrl, F10 Alt, F10Table C-1. VRC 6940 Key CombinationsUnmodified Shift Caplock Ctrl Func Shift+Func Func+Ctrl Ctrl+Func Alt+Func
C-4VRC 6940 Product Reference Guide Keyboard Character & Character Combination IllustrationsThe captions indicate what sequence of modifier keys produce the keyboard character. FUNC and SHIFT-FUNC key combinations (Figure C-5 and Figure C-9) produce scan codes, ASCII values, and printable characters/logical key sequence names. The keys are illustrated as follows:Figure C-1. Key CaptionsFigure C-2. Unshifted KeyboardSS AACScan Code (decimal) ASCII Value (decimal)Printable Character or Logical Key Sequence NamenF1 F2 F3 F4 F5ON/OFFBACK CTRLab cd egf789hi jklm456op qr sut 123CLEARvwxyzFUNCSHIFT _0.ENTER
C-5Keyboard LayoutsFigure C-3. Shift-Modified KeyboardFigure C-4. Ctrl-Modified KeyboardShiftF1 CTRLABC DE GF&* (HI J KLNM$%^OPQ RSUT!@#CLEARVWX YZ _)>ENTERShiftF2 ShiftF3 ShiftF4 BACKShiftF5 4682ON/OFFCtrlF1 CtrlF2 CtrlF3 CtrlF4 CtrlF5 CtrlBrk CTRLCtrl ACtrlHCtrl ICtrlJCtrlKCtrlLCtrlNCtrl6CtrlOCtrlPCtrlQCtrlRCtrlSCtrlUCtrlTCtrl2CLEARCtrl VCtrlWCtrlXCtrlZCtrl -Line FeedCtrl ↑↑↑↑Ctrl →→→→Ctrl ↓↓↓↓Ctrl BCtrl CCtrl DCtrl FCtrl ECtrl GCtrlMCtrlYCtrl ←←←←ON/OFF
C-6VRC 6940 Product Reference Guide Figure C-5. Func-Modified KeyboardFigure C-6. Alt-Modified Keyboard81 00PgDn41 96‘13 61=43 92\CLEAR64 00F665 00F766 00F867 00F968 00F1057 32 73 00PgUp29 00Alt 71 00Home 79 00End56 00a48 98b29 00c32 100d18 101e33 102f34 103g59 00F1101Dark102Light100BckLt*58 00CapLk67 00F969 00NumLk24 111o25 112p16 113q19 114r68 00F1020 16t78 43+74 45-55 42*53 47/21 121y44 122z26 91[27 93]39 59;40 39’51 44,53 47/13 61=12 45-82 00Ins 83 00Del01 27Space* Functions only on units equipped with the keyboard backlight option.ON/OFFAltF1Alt 8Alt 4 Alt 6Alt 1 Alt 2 Alt 3Alt - Alt 0AltF2 AltF3 AltF4 AltF5Alt A Alt B Alt C Alt D Alt E Alt F Alt GAlt H Alt I Alt J Alt K Alt L Alt M Alt NAlt O Alt P Alt Q Alt R Alt S Alt T Alt UAlt V Alt W Alt X Alt Y Alt ZAlt 7 Alt 9Alt 5ON/OFF
C-7Keyboard LayoutsFigure C-7. Caplock-Modified KeyboardFigure C-8. Ctrl + Func-Modified KeyboardF1 F2 F3 F4 F5ON/OFFBACKCTRLABC DEGF789HI J KL NM 4 56OPQ RS UT12 3CLEARVWX YZ FUNC _0.ENTERCtrlF6 CtrlF7 CtrlF8 CtrlF9 CtrlF10 BACK AltCtrl BCtrlDDark CapLkCtrlPCLEARSHIFT Ctrl -ENTERCtrlHome CtrlEnd CtrlPgupCtrlECtrlFCtrlGCtrlF1 Light BckLt* CtrlF9CtrlOCtrlQCtrlRCtrlF10 CtrlTCtrl*CtrlYCtrlZCtrl \Ctrl4Ctrl5CtrlPgdn* Functions only on units equipped with the keyboard backlight option.ON/OFF
C-8VRC 6940 Product Reference Guide Figure C-9. Shift+ Func-Modified KeyboardFigure C-10. ALT + Func-Modified KeyboardON/OFFCLEAR89 00Shft F6 90 00Shft F7 91 00Shft F8 92 00Shft F9 93 00Shft F1057 32Space56 00A48 66B29 00C32 68D18 69E33 70F34 71G84 00Shft F1101Dark101Light100BckLt*58 00CapLk92 00Shft F969 00NumLk24 79O25 80P16 81Q19 82R93 00Shft F1020 84T78 43+74 45-53 63?21 89Y44 90Z29 00Alt 71 55773 57979 49181 51341 126~13 43+43 124|26 123{27 125}39 58:40 34“51 60<53 63?12 95_82 48083 46.13 43+01 27* Functions only on units equipped with the keyboard backlight option.AltF6 ON/OFFDarkAltF7 AltF8 AltF9 AltF10AltCAltDAltEAltFAltGAltF1 Light BckLt* CapLk AltF9 NumLkAlt OAlt PAlt QAlt RAlt F10 Alt TAlt YAlt ZAlt =Alt -AltB* Functions only on units equipped with the keyboard backlight option.
D-1Appendix D Environmental and Technical SpecificationsThis appendix describes: !physical, environmental, and operational information for VRC 6940 terminals!reference information for the COM1 and scanner ports!mappings for the null modem pinoutsSpecificationsTab l e D -1 summarizes physical, operational, and environmental specifications for the VRC 6940.Table D-1. VRC 6940 Specifications Dimensions 12” x 9” x 3" / 310 mm x 234 mm x 81 mm (LxWxD)Weight 6.7 lbs Data Communication RS-232 serial portPower Requirements 9 - 60 VDCBackup Battery NiMHDisplay Size 8 line x 40 characterDisplay Vacuum FluorescentNumber of Keys 54 keysRadio Module Internal PCMCIA
D-2VRC 6940 Product Reference GuideScanner Port The Scanner Port is located on the back panel of the VRC 6940. Table D-2 lists the pin descriptions.Microprocessor NEC V25Housing Magnesium AlloySealing IP65 and NEMA4Vibration Specification SAE 1445Operating Temperature:without internal heaterwith optional internal heater-2°F to 122° F / -20°C to 50° C-22°F to 122°F / -30°C to 50°CStorage Temperature -40°F to 140° F/ -40°C to 60° CRF Technology: 2.4 GHz YesOperating System DR-DOSArchitecture 16 Bit Memory:RAMFLASH640KB 1.2MBProgramming Tool 16 Bit Application Developer's ToolkitTable D-2. Scanner Port Pin DescriptionsPin Name Function Direction1 SOS Start of scan1input2 BARDATA Bar code data input3 LEDEN L.E.D. enable output4 LASERTRIGN Laser trigger not input5 LASEREN Laser enable output6 GROUND Logic/power ground N/A7 LASERVCC Laser power (+5V) output1Must be grounded on contact–wand scannersTable D-1. VRC 6940 Specifications
D-3Environmental and Technical SpecificationsCOM1 Serial Port The COM1 Serial Port is located on the back panel of the VRC 6940. Table D-3 lists the pin descriptions.Table D-3. COM1 Serial Port DescriptionsPin Name Signal Direction1 GROUND GND IN12 TRANSMIT DATA TXD OUT13 RECEIVED DATA RXD IN14 REQUEST TO SEND RTS OUT15 CLEAR TO SEND CTS IN16 DATA SET READY DSR IN17 SIGNAL GROUND GND —18 CARRIER DETECT DCD IN19 Not used10 Not used11 REV CH OUT112-19 Not used20 DATA TERMINAL READY DTR OUT121 Not used22 RING INDICATOR RI IN123 Not used24 Reserved225 Reserved21RS-232 signal2Symbol internal test signals
D-4VRC 6940 Product Reference GuideNull ModemA null modem cable is used for:!downloading programs from a PC to a VRC 6940 terminal!unloading memory contents from a VRC 6940 terminal to a PCThe cable has a 16-pin male circular connector, and a 25-pin female D-Connector. Tabl e D -4 shows the pin-outs for both connectors.Table D-4. Null Modem Pin Out DescriptionsVRC6940 16-Pin Circular Connector (Male) Host 25-Pin D-Connector(Female)Pin Name Pin Name1DCD20DTR2 RXD 2 TXD3 TXD 3 RXD4 DTR 6, 8 DSR, DCD5 GND 7 GND6DSR20DTR7RTS5CTS8CTS4RTS
E-1Appendix E Communications Status CodesCommunications Status CodesWhen the Program Loader and Memory Transfer utilities complete their functions, they return communication status codes in the form of a four hexadecimal number. A status code of 0000 indicates success; any other code indicates failure. Tabl e E-1 describes the conditions associated with the status codes.Table E-1. Communications Status CodesStatus Code Meaning0002 Receive overrun error0004 Receive parity error0008 Receive framing error0010 Programming voltage not present0020 Data Set Ready or Carrier Detect not detected on open0080 ABORT key hit during comm0100 CD lost during session0200 Illegal Intel hexadecimal record0400 Either unsupported Intel record0600 NVM EEPROM failed to erase0800 Receive time-out error1000 Control start character time-out2000 Clear To Send inactive time-out error4000 Receive buffer full
E-2VRC 6940 Product Reference Guide
Glossary-1GlossaryAccess PointA device that provides transparent access between Ethernet wired networks and IEEE 802.11 interoperable radio-equipped mobile units (MUs). Symbol’s hand-held computers, or other devices equipped with a PCMCIA slot, communicate with wired networks using Access Points (AP). The mobile unit may roam among the APs in the same subnet while maintaining a continuous, seamless connection to the wired network. Refer to Subnet.APSee Access Point. APIApplication Programming Interface. An interface that gives one software component the ability to communicate with or control another. Usually used to refer to services provided by one software component to another when using software interrupts or function calls.ASCIIAmerican Standard Code for Information Interchange. A 7 bit code representing 128 letters, numerals, punctuation marks, and control characters. It is a standard data transmission code in the U.S.Bar CodeA pattern of variable-width bars and spaces which represents numeric or alphanumeric data in machine-readable form. The general format of a bar code symbol consists of a leading margin, start character, data or message character, check character (if any), stop character, and trailing margin. Within this framework, each recognizable symbology uses its own unique format. See Symbology.
Glossary-2VRC 6940 Product Reference GuideBaud RateA measure for data transmission speed.BIOSBasic Input Output System. A collection of ROM-based code with a standard API used to interface with standard PC hardware.BitBinary digit. One bit is the basic unit of binary information. Generally, eight consecutive bits compose one byte of data. The pattern of 0 and 1 values within the byte determines its meaning. Bits per Second (bps)Number of bits transmitted or received per second.BOOTPBootstrap protocol. A TCP/IP protocol that enables a VRC 6940, for example, to learn its IP address from a centrally administered server. It does this by broadcasting a TCP/IP BOOTP request message to the network. Boot servers on the network respond if configured to do so. The terminal accepts and uses the first valid IP address that it receives and, optionally, other network parameters. ByteOn an addressable boundary, eight adjacent binary digits (0 and 1) combined in a pattern to represent a specific character or numeric value. Bits are numbered from the right, 0 through 7, with bit 0 the low-order bit. One byte in memory can be used to store one ASCII character.Data Communications Equipment (DCE)A device such as a modem that is designed to attach directly to a DTE (Data Terminal Equipment) device.Data Terminal Equipment (DTE)A device such as a terminal or printer that is designed to attach directly to a DCE (Data Communications Equipment) device.DecodeTo recognize a bar code symbology (e.g., Codabar, Code 128, Code 3 of 9, UPC/EAN, etc.) and analyze the content of the bar code scanned.
Glossary-3GlossaryDOSDisk Operating System. This is basic software that allows you to load and use software applications on your computer. VRC 6940 terminals use a product called DR-DOS.DR-DOSDisk operating system software on VRC 6940 terminals. It is compatible with and extends the industry-standard IBM PC-DOS, and provides access to a number of commercially available programming tools.EEPROMElectrically Erasable Programmable Read-Only Memory. An on-board non-volatile memory chip. See NVM.ESS IDAllows facilities using 802.11 protocol to limit which Access Points a VRC 6940 terminal can communicate with. The terminal can only communicate with Spectrum24 Access Points that have matching ESS IDs. See Spectrum24 documentation for further information.File Transfer Protocol (FTP)A TCP/IP application protocol governing file transfer via network. See TCP/IP.Flash DiskNon-volatile memory for storing application and configuration files.Flow ControlThe procedure for adjusting the flow of data from one device to another to ensure that the receiving device can handle all of the incoming data. FTPSee File Transfer Protocol.HEX ImageA file format used for installing applications on the VRC 6940. The image may contain BIOS information, applications, and instructions for transferring the applications.HostA computer that serves other terminals in a network, providing services such as network control, database access, special programs, supervisory programs, or programming languages.
Glossary-4VRC 6940 Product Reference GuideI/O PortsInput/Output Ports. The I/O ports are primarily dedicated to passing information into or out of the terminal’s memory. The VRC 6940 terminal includes a Serial port and a Scanner port.IP AddressA 32-bit address assigned to nodes on a TCP/IP network. The address is written as four octets separated by periods (dotted decimal format), e.g., 130.24.34.03. They represent a network section, an optional subnet section, and a host section. Also see Terminal IP Address .LANLocal Area Network.Liquid Crystal Display (LCD)A display that uses liquid crystal sealed between two glass plates. The crystals are excited by precise electrical charges, causing them to reflect light outside according to their bias. They use little electricity and react relatively quickly. They require external light to reflect their information to the user.Light Emitting Diode (LED)A low power electronic light source commonly used as an indicator light. It uses less power than an incandescent light bulb but more than a Liquid Crystal Display (LCD).MUMobile Unit.Net IDA Net ID allows facilities using Spring protocol to limit which Access Points a VRC 6940 terminal can communicate with. The terminal can only communicate with Spectrum24 Access Points that have matching Net IDs. See the Spectrum24 documentation for more information.NVMNon-volatile memory. This is memory that retains its contents after its power supply is removed or turned off. Files and programs contained in NVM help load programs onto the terminal and provide an environment for running programs.Null ModemA special cable that allows direct connection between two DTE (Data Terminal Equipment) devices by making each one emulate a DCE (Data Communications Equipment) device.
Glossary-5GlossaryParityA technique for verifying whether or not data has been lost or overwritten when it is transferred from one place in storage to another or between computers.PCMCIA Personal Computer Memory Card Interface Association.PCMCIA CardA plug-in expansion card for laptop computers and other devices, also called a PC Card. PC Cards are 85.6 mm long x 54 mm wide, and have a 68 pin connector. There are several different kinds: RAMRandom Access Memory. Data in RAM can be accessed in random order, and quickly written and read. RFRadio Frequency.ROMRead-Only Memory. Data stored in ROM cannot be changed or removed.RouterA device that connects separate networks. Routers are typically used to extend the range of cabling and to organize the topology of a network into subnets. They also support the required protocols for packet filtering. Refer to Subnet.RTCReal Time Clock.Type Height Common UseType I 3.3 mm RAM or Flash RAMType II 5 mm modems, LAN adaptorsType III 10.5 mm Hard Disks
Glossary-6VRC 6940 Product Reference GuideScannerAn electronic device used to scan bar code symbols and produce a digitized pattern that corresponds to the bars and spaces of the symbol. Its three main components are:1. Light source (laser or photoelectric cell) - illuminates a bar code.2. Photodetector - registers the difference in reflected light (more light reflected from spaces).3. Signal conditioning current - transforms optical detector output into a digitized bar pattern.Spectrum24Symbol’s frequency-hopping, spread spectrum cellular network.Spread SpectrumA technique for uniformly distributing the information content of a radio signal over a frequency range larger than normally required for robust transmission of data. Spreading the signal without adding additional information adds significant redundancy, which allows the data to be recovered in the presence of strong interfering signals such as noise and jamming signals. This is its primary advantage. Subnet A subset of nodes on a network that are serviced by the same router. Refer to Router.SVTPSymbol Virtual Terminal Program.TerminalA Symbol portable computer product.Terminal IP AddressThe terminal’s network address. Networks use IP addresses to determine where to send data that is being transmitted over a network. An IP address is a 32-bit number referred to as a series of 8-bit numbers in decimal dot notation (e.g., 130.24.34.03). The highest 8-bit number you can use is 254. TFTPTrivial File Transfer Protocol.
Glossary-7GlossaryTransmission Control Protocol/Internet Protocol (TCP/IP)A suite of standard network protocols that were originally used in UNIX environments but are now used in many others. The TCP governs sequenced data; the IP governs packet forwarding. TCP/IP is the primary protocol that defines the Internet.VRCVehicular Radio Computer.
Glossary-8VRC 6940 Product Reference Guide
Index-1IndexAAccessories (optional) . . . . . . . . . . . . . . . 1-4Alt + Func-modified keyboard . . . . . . . . . C-8Alt-modified keyboard . . . . . . . . . . . . . . C-6Antenna, vehicle-mounted option . . . . . . . 2-4AP ping test . . . . . . . . . . . . . . . . . . A-5, A-8Applications, installing . . . . . . . . . . . . . . 4-2BBacklight, keyboard . . . . . . . . . . . . . . . . 5-6Bootingboot mode . . . . . . . . . . . . . . . . . . . . 3-4cold . . . . . . . . . . . . . . . . . . . . . . . . 6-6failure to reboot . . . . . . . . . . . . . . . . 6-7sequence . . . . . . . . . . . . . . . . . . . . . B-2to Command Mode . . . . . . . . . . . . . 6-7warm . . . . . . . . . . . . . . . . . . . . . . . 6-5BOOTP . . . . . . . . . . . . . . . . . . . . . . . . . B-3Brightness control . . . . . . . . . . . . . . . . . . 5-6CCable, null modem . . . . . . . . . . . . . . . . . D-4Caplock-modified keyboard . . . . . . . . . . . C-7CFG24 Configurator utility . . . . . . A-1, A-12boot mode . . . . . . . . . . . . . . . . . . . A-17buffers . . . . . . . . . . . . . . . . . . . . . A-19default router . . . . . . . . . . . . . . . . A-15diversity . . . . . . . . . . . . . . . . . . . . A-16ESS ID/NET ID . . . . . . . . . . . . . . . A-14IP Address . . . . . . . . . . . . . . . . . . . A-16menu . . . . . . . . . . . . . . . . . . . . . . A-13parameters . . . . . . . . . . . . . . . . . . A-13power management . . . . . . . . . . . . A-18rate control . . . . . . . . . . . . . . . . . . A-20re-transmit delay . . . . . . . . . . . . . . A-19scanner/rf operation . . . . . . . . . . . . A-20sleep mode . . . . . . . . . . . . . . . . . . A-17starting utility . . . . . . . . . . . . . . . . . 3-2subnet mask . . . . . . . . . . . . . . . . . A-14using menus for . . . . . . . . . . . . . . . . 3-3Changing power sources . . . . . . . . . . . . . 5-8Com1 serial port pin descriptions . . . . . . . D-3Command Modediagnostics . . . . . . . . . . . . . . . . . . . 5-8file transfer . . . . . . . . . . . . . . . . . . . 4-4Communications status codes . . . . . . . . . E-1Configurationconfiguration utility . . . . . . . . . . . . A-12first time start-up . . . . . . . . . . .3-2, A-12hardware . . . . . . . . . . . . . . . . . . . . 3-1parameters . . . . . . . . . . . . . . .3-3, A-13Spectrum24 radio card . . . . . . . . 3-2–3-5Copying files to flash . . . . . . . . . . . . . . A-21CTRL functions . . . . . . . . . . . . . . . . . . . 5-4Ctrl + Func-modified keyboard . . . . . . . . C-7Ctrl-modified keyboard . . . . . . . . . . . . . . C-5DData buffer . . . . . . . . . . . . . . . . . . . . . . 3-4Default router . . . . . . . . . . . . . . . . . . . . 3-3Deleting files from flash . . . . . . . . . . . . A-21DIAG24 diagnostics utility . .A-1 – A-10, B-3Diagnostics . . . . . . . . . . . . . . . . . A-1–A-11DIAG24 diagnostics . . . . . . . . . . . . . A-5keyboard test . . . . . . . . . . . . . . . . . A-4ping test . . . . . . . . . . . . . . . . . . . . . A-5
Index-2VRC 6940 Product Reference GuideDisplayadjusting brightness . . . . . . . . . . . . . 5-6blank . . . . . . . . . . . . . . . . . . . . . . . 6-2washing . . . . . . . . . . . . . . . . . . . . . . 7-2Diversity . . . . . . . . . . . . . . . . . . . . . . . . 3-4EEEPROM, erasing with Program Loader . . 4-5802.11 protocol . . . . . . . . . . . . . . . . . . A-14Entering data . . . . . . . . . . . . . . . . . . . . . 5-6Equipment, optional . . . . . . . . . . . . . . . . 1-3Error messages . . . . . . . . . . . . . . . . . . . . 6-3ESS ID . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3FField diagnostic tests . . . . . . . . . . . . . . .A-10File transferbaud rate settings . . . . . . . . . . . . . . . 4-5Command Mode . . . . . . . . . . . . . . . 4-4communications status codes . . . . . . . E-1data bits settings . . . . . . . . . . . . . . . . 4-6failed transfer . . . . . . . . . . . . . . . . . . 4-7flow control settings . . . . . . . . . . . . . 4-6HEX image . . . . . . . . . . . . . . . . . . . 4-2installing transferred files . . . . . . . . . . 4-8null modem cable . . . . . . . . . . . . . . . 4-2parity settings . . . . . . . . . . . . . . . . . . 4-6Program Loader . . . . . . . . . . . . . . . . 4-2SENDHEX . . . . . . . . . . . . . . . . . . . 4-2starting . . . . . . . . . . . . . . . . . . . . . . 4-7successful transmission . . . . . . . . . . . 4-7TD Rem utility . . . . . . . . . . . . . . . . . 4-2terminal preparation . . . . . . . . . . . . . 4-4TFT3000 program . . . . . . . . . . . . . . 4-2using Program Loader . . . . . . . . . . . . 4-4First time terminal use . . . . . . . . . . . 1-4, 7-1Flash disk . . . . . . . . . . . . . . . . . . . . . . . . B-3copying files to . . . . . . . . . . . . . . . .A-21deleting files from . . . . . . . . . . . . . .A-21renaming files on . . . . . . . . . . . . . .A-21Flash utility . . . . . . . . . . . . . . . . . . . . .A-21FUNC key . . . . . . . . . . . . . . . . . . . . . . . 5-4Func-modified keyboard . . . . . . . . . . . . .C-6HHEX image transfer . . . . . . . . . . . . . . . . 4-2IInitial use, terminal . . . . . . . . . . . . . . . . . 1-4Initializing the radio . . . . . . . . . . . . . . . A-12Installationoverview of tasks . . . . . . . . . . . . . . . 1-4software . . . . . . . . . . . . . . . . . . 4-1–4-8Internal battery . . . . . . . . . . . . . . . . . . . 7-1IP address . . . . . . . . . . . . . . . . . . . . . . . 3-3KKeyboardbacklight option . . . . . . . . . . . . . . . . 5-6cursor indicators . . . . . . . . . . . . . . . 5-4key descriptions . . . . . . . . . . . . . . . . 5-4keyboard layouts . . . . . . . . . . . . . . . C-1keyboard test . . . . . . . . . . . . . . . . . . A-4modifier keys . . . . . . . . . . . . . . . . . . 5-4special functions . . . . . . . . . . . . . . . 5-4using keyboard . . . . . . . . . . . . . . . . 5-6LLWP LAN Workplace software . . . . . . . . B-3MMaintenance . . . . . . . . . . . . . . . . . . . . . 7-1internal battery . . . . . . . . . . . . . . . . 7-1terminal . . . . . . . . . . . . . . . . . . . . . 7-2Memory transfer . . . . . . . . . . . . . . . . . . 6-8communications status code . . . . . . . E-1Modifier keys . . . . . . . . . . . . . . . . . . . . . 5-4Mounting hardware (illus.) . . . . . . . . . . . 2-3Moving a terminal to new power source . . 5-8NNet ID . . . . . . . . . . . . . . . . . . . . . . . . . 3-3Null modem cable . . . . . . . . . . . . . . . . . 4-2for memory transfers . . . . . . . . . . . . 6-8pin descriptions . . . . . . . . . . . . . . . . D-4
Index-3IndexOON/OFF key . . . . . . . . . . . . . . . . . . . . . 5-2Operationentering data . . . . . . . . . . . . . . . . . . 5-6power on suspend or off . . . . . . . . . . 5-2Options . . . . . . . . . . . . . . . . . . . . . . . . . 1-3PPartsaccessories . . . . . . . . . . . . . . . . . . . . 1-3options . . . . . . . . . . . . . . . . . . . . . . 1-3standard . . . . . . . . . . . . . . . . . . . . . 1-2Ping test . . . . . . . . . . . . . . . . . . . . A-5, A-8Powerchanging power sources . . . . . . . . . . 5-8connecting to terminal . . . . . . . .2-5, 2-7external cable preparation . . . . . . . . . 2-5forcing off . . . . . . . . . . . . . . . . . . . . 6-4terminal power management . . . . . . . 3-4Power cableexternal . . . . . . . . . . . . . . . . . . . . . 2-5external cable preparation . . . . . . . . . 2-5Power management . . . . . . . . . . . . . . . . A-18Power on, suspend or off . . . . . . . . . . . . . 5-2Printer options . . . . . . . . . . . . . . . . . . . . 1-4Program Loader utility . . . . . . . . . . . . . . 4-4function . . . . . . . . . . . . . . . . . . . . . 4-2navigating in . . . . . . . . . . . . . . . . . . 4-5RRadiodefault settings . . . . . . . . . . . . . . . . A-12initialization . . . . . . . . . . . . . . . . . A-12initializing . . . . . . . . . . . . . . . . . . . A-12options . . . . . . . . . . . . . . . . . . . . . . 1-3Related publications . . . . . . . . . . . . . . . . viiiRenaming flash files . . . . . . . . . . . . . . . A-21Resetting a terminal . . . . . . . . . . . . . . . . 5-3Re-transmit delay . . . . . . . . . . . . . . . . . . 3-4SScannerattaching an external scanner . . . . . . 5-7options . . . . . . . . . . . . . . . . . . . . . . 1-3scanner and RF operation . . . . . . . . . . . A-20Scanner portpin descriptions . . . . . . . . . . . . . . . . D-2Self Test diagnostics . . . . . . . . . . . . . . . . A-1command mode . . . . . . . . . . . . . . . . 5-8menu options . . . . . . . . . . . . . . . . . A-3SENDHEXdefault values for communications . . . 4-2earlier versions . . . . . . . . . . . . . . . . 4-3Serial port Com1 pin descriptions . . . . . . . D-3Service information . . . . . . . . . . . . . . . i-viiiSHIFT functions . . . . . . . . . . . . . . . . . . 5-4Shift-modified keyboard . . . . . . . . . . C-5Shift+Func-modified keyboard . . . . . . C-8Sleep mode . . . . . . . . . . . . . . . . . . . . . . 3-4Softwareenvironment . . . . . . . . . . . . . . . . . . B-1files . . . . . . . . . . . . . . . . . . . . . . . . B-3hardware required for installation . . . 4-1installation . . . . . . . . . . . . . . . . 4-1–4-8LWP . . . . . . . . . . . . . . . . . . . . . . . B-3Program Loader utility . . . . . . . . . . . 4-1required for file transfers . . . . . . . . . 4-1SENDHEX . . . . . . . . . . . . . . . . . . . 4-1software utilities. See Utilities.standard . . . . . . . . . . . . . . . . . . . . . B-3Specifications, physical, operational, environmental . . . . . . . . . . . . . . D-1Spectrum24 configuration options. . . . . . . 3-3Status codes . . . . . . . . . . . . . . . . . . . . . . E-1Storage . . . . . . . . . . . . . . . . . . . . . . . . . 7-2Subnet mask . . . . . . . . . . . . . . . . . . . . . 3-3Symbol Support Center . . . . . . . . . . . . . . . ixSystem utilities, command mode . . . . . . . . 5-8Also see UtilitiesTTDRem utility . . . . . . . . . . . . . . . . . . . . 4-2Technical support . . . . . . . . . . . . . . . . . . .viii
Index-4VRC 6940 Product Reference GuideTerminalaccessories . . . . . . . . . . . . . . . . . . . . 1-3configurator utility . . . . . . . . . . . . .A-12initial use . . . . . . . . . . . . . . . . . . . . . 1-4parts (illus.) . . . . . . . . . . . . . . . . . . . 1-2preparing for file transfer . . . . . . . . . . 4-4restart after forced power off . . . . . . . 6-5Troubleshooting . . . . . . . . . . . . . . 6-1–6-12application not responding . . . . . . . . . 6-3blank display . . . . . . . . . . . . . . . . . . 6-2booting to Command Mode . . . . . . . . 6-7failure to reboot . . . . . . . . . . . . . . . . 6-7power fault . . . . . . . . . . . . . . . . . . . 6-2scanner problems . . . . . . . . . . . . . . . 6-3start-up problems . . . . . . . . . . . 6-1, 6-2terminal shuts off . . . . . . . . . . . . . . . 6-1terminal stops responding . . . . . . . . . 6-4UUtilitiesCFG24 configurator . . . . . . . . A-12, B-3command mode . . . . . . . . . . . . . . . . 5-8DIAG24 diagnostics . . . . . . . . . . . . . A-5flash utility . . . . . . . . . . . . . . . . . . A-21keyboard test . . . . . . . . . . . . . . . . . . A-4ping test . . . . . . . . . . . . . . . . . . . . . A-5VVehicle mounted antenna . . . . . . . . . . . . . 2-4WWarm boot . . . . . . . . . . . . . . . . . . . . . . 6-5
272-37641-02Revision B — June 2001Symbol Technologies, Inc. One Symbol Plaza, Holtsville N.Y. 11742-1300VRC 6940 Product Reference Guide

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