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Symbol VRC 6940 Product Reference Manual

Symbol technologies vehicular radio computer product reference guide
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  • Page 1 VRC 6940 Product Reference Guide...
  • Page 2 VRC 6940 Product Reference Guide 72-37641-02 Revision B June 2001...
  • Page 3 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.

  • Page 4: Table Of Contents

    Parts of a VRC 6940 Terminal ........
  • Page 5 Troubleshooting a VRC 6940 Terminal........
  • Page 6 VRC 6940 Self Tests........
  • Page 7 VRC 6940 Product Reference Guide Appendix C. Keyboard Layouts Keyboard Character & Character Combination Illustrations......C-4 Appendix D.

  • Page 8: About This Manual

    This Product Reference Guide describes the VRC 6940 terminal. Topics include: hardware installation, software configuration, operation, troubleshooting, and maintenance. Notational Conventions This document uses the following conventions: “Operator” or “User” refers to anyone using a VRC 6940 terminal. “Terminal” refers to a VRC 6940 terminal.

  • Page 9: Related Publications

    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.
  • Page 10 Symbol Place Winnersh Triangle, Berkshire RG41 5TP United Kingdom 0800 328 2424 (Inside UK) +44 208 945 7529 (Outside UK) Australia Symbol Technologies Pty. Ltd. 432 St. Kilda Road Melbourne, Victoria 3004 1-800-672-906 (Inside Australia) +61-3-9866-6044 (Outside Australia) Denmark/Danmark Symbol Technologies AS...
  • Page 11 VRC 6940 Product Reference Guide Germany/Deutchland Symbol Technologies GmbH Waldstrasse 68 D-63128 Dietzenbach, Germany 6074-49020 (Inside Germany) +49-6074-49020 (Outside Germany) Latin America Sales Support 7900 Glades Road Suite 340 Boca Raton, Florida 33434 USA 1-800-347-0178 (Inside United States) +1-561-483-1275 (Outside United States)

  • Page 12: Chapter 1 Getting Started

    This 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).

  • Page 13: Parts Of A Vrc 6940 Terminal

    VRC 6940 Product Reference Guide Parts of a VRC 6940 Terminal Standard Parts A 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...

  • Page 14: Options And Accessories

    Note: Contact your Symbol Sales representative to order the cable appropriate for your country. Radio Cards VRC 6940 models include an internal PCMCIA radio card for use with a Symbol Spectrum24 network. For other information on radio cards, contact Symbol Technologies. Scanners...

  • Page 15: Printers

    VRC 6940 Product Reference Guide Printers The VRC 6940 terminal can use these Symbol printer models: Before You Use the Terminal... Table 1-1. VRC 6940 Installation and Configuration Tasks Task Install the hardware in a vehicle or forklift, or on a wall or workbench.

  • Page 16: Chapter 2 Installing Hardware

    Chapter 2 Installing Hardware This 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. A properly trained technician must perform the installation. Improper installation can damage your vehicle.

  • Page 17: Hardware Installation

    Do not install a VRC 6940 terminal in a location that will affect vehicle safety or driveability. To install VRC 6940 hardware: 1.
  • Page 18 Figure 2-1. Terminal Mounted on a Vehicle Figure 2-2. Terminal Mounted on a Wall Figure 2-3. Terminal Mounted on a Workbench Installing Hardware BACK ON/OFF CTRL CLEAR ENTER SHIFT FUNC...
  • Page 19 VRC 6940 Product Reference Guide 4. 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.

  • Page 20: Providing Power: Vehicle Installations

    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.
  • Page 21 VRC 6940 Product Reference Guide Figure 2-7. Adding an In-line Fuse Holder b. 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. Installation Note: Cable Routing Caution...

  • Page 22: Providing Power: Wall Or Workbench Installations

    For 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 To provide power from an AC source: 1.

  • Page 23: Installation And The Internal Battery

    VRC 6940 Product Reference Guide Installation and the Internal Battery A 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.

  • Page 24: Chapter 3 Configuring Spectrum24

    Chapter 3 Configuring Spectrum24 Each 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 —...

  • Page 25: Configuring A Spectrum24 Radio Card

    (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...
  • Page 26 3. 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.
  • Page 27 VRC 6940 Product Reference Guide Table 3-1. Spectrum24 Configuration Options Option 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.
  • Page 28 " 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...
  • Page 29 VRC 6940 Product Reference Guide...

  • Page 30: Chapter 4 Installing Software

    Chapter 4 Installing Software This 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...

  • Page 31: Transferring And Installing Application Programs

    VRC 6940 Product Reference Guide Transferring and Installing Application Programs This 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.
  • Page 32 If you are using an earlier version, and errors appear, use a lower baud rate. 5. A prompt appears as shown in up the VRC 6940 terminal next, as described in the next section. C:\>cd\ sendhex pgmname 38400 com2 Version: 3.01-01...

  • Page 33: Provide A Reliable Power Source

    Transferring Files). 3. Prepare the Terminal for Transferring Files This 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.
  • Page 34 Baud Rate: Select 38400. The screen will look like this: Comm Parameters Baud 6 38400 Figure 4-6. Setting Baud Rate on the VRC 6940 Installing Software Installation Note: Before you Erase EEPROM If you have not configured the Spectrum24...
  • Page 35 VRC 6940 Product Reference Guide b. Data Bits: Select 7. The screen will look like this: Comm Parameters Data Bits Figure 4-7. Setting Data Bits on the VRC 6940 c. Parity: Select Odd. The screen will look like this: Comm Parameters Parity Figure 4-8.

  • Page 36: Start The File Transfer

    If 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.

  • Page 37: Complete The Installation Of Transferred Files

    To 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.

  • Page 38: Chapter 5 Operating A Vrc 6940

    Chapter 5 Operating a VRC 6940 After 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...

  • Page 39: Powering A Terminal On And Off

    VRC 6940 Product Reference Guide Powering a Terminal On and Off A 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.

  • Page 40: Powering On Or Off Automatically

    Powering On or Off Automatically Particular 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:...

  • Page 41: Modifier Keys: Shift, Func And Ctrl

    VRC 6940 Product Reference Guide Modifier Keys: SHIFT, FUNC and CTRL SHIFT, 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.
  • Page 42 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. Press to dim the display contrast. Press to brighten display contrast. Operating a VRC 6940 Description...

  • Page 43: Adjusting Brightness

    5-4). Using the Keyboard Use 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 combination with one or more modifier keys, each character key can produce more than the usual one or two characters.

  • Page 44: Bar Code Scanning

    4. Press the ON/OFF key to power the terminal on. Scanner Port Using a Bar Code Scanner For information on using a bar code scanner, consult the documentation that came with the scanner. Figure 5-4. Scanner Port Operating a VRC 6940 Back of Terminal...

  • Page 45: Moving A Terminal To A Different Power Source

    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.

  • Page 46: Chapter 6 Troubleshooting

    Chapter 6 Troubleshooting This 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 data Troubleshooting a VRC 6940 Terminal Table 6-1 describes some problems, their probable causes and some suggested solutions.
  • Page 47 VRC 6940 Product Reference Guide Table 6-1. Troubleshooting VRC 6940 Terminals Problem Start-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.

  • Page 48: Error Messages

    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 Table 6-2.

  • Page 49: Scanning Problems

    For more information, consult the documentation for your scanner. Terminal Stops Responding This 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 Point If you have moved the terminal during use, make sure you are still within range of an Access Point (AP).

  • Page 50: Restart After Forcing A Suspend

    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:...

  • Page 51: Cold Boot

    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.

  • Page 52: Command Mode

    Command Mode 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. This terminal displays this screen: COMMAND MODE Select Function Self Test...

  • Page 53: Memory Transfer Analyzer (Mta) Utility

    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.
  • Page 54 Command (you can make one up) Figure 6-2. Setting up to Receive a Memory Transfer 4. 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.
  • Page 55 VRC 6940 Product Reference Guide 7. 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.
  • Page 56 10. 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. Use arrow keys Start Figure 6-7. Selecting a Range of EMS to Transfer 11.

  • Page 57: Technical Support Contacts

    13. 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.

  • Page 58: Chapter 7 Maintenance

    Maintaining the Internal Battery The 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.

  • Page 59: Storing The Terminal

    Internal Battery on page 7-1. Cleaning Clean a VRC 6940 regularly to prevent long-term build up of dirt and grime on the keys, terminal case, and display. Washing the Terminal To wash the terminal case and keyboard, use a clean, soft cloth dampened with a mild cleaner (for example, soap and water).

  • Page 60: Appendix A Utilities And Diagnostic Tests

    Appendix A Utilities and Diagnostic Tests VRC 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 DIAG24 diagnostics that allow you to ping the network and troubleshoot possible radio problems.

  • Page 61: Vrc 6940 Self Tests

    VRC 6940 Product Reference Guide VRC 6940 Self Tests Run 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.
  • Page 62 7. 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. Self Test What You Should See Config Screen 1 Config Screen 1 Vers: 6940 1.10-00 Time: 09:45:23 Date: 01-01-1980-2 Nicd: Good...

  • Page 63: Keyboard Test

    VRC 6940 Product Reference Guide Keyboard Test Self Test lets you test any keys except CLEAR and the ON/OFF key. Config Screen 1 When you press a key, the program displays the corresponding key code to the right of the test name on the top line.

  • Page 64: Diag24 Diagnostics Utility

    DIAG24 Diagnostics Utility The 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 Setup To run the utility and set up for the tests: 1.
  • Page 65 VRC 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.
  • Page 66 6. Press 1, 2, 3 or 4 to select the number of pings you want to perform: <Test Mode> NUMBER OF PINGS 1. 100 pings 2. 500 pings 3. 1000 pings 4. Non-stop Select[1-4 or 'Q']: Figure A-6. Selecting the Number of Pings 7.

  • Page 67: Ping Test

    VRC 6940 Product Reference Guide Ping Test During the AP Ping Test the terminal displays and updates this screen: AP PING TEST Association Indicator Ping Test Count Press ‘Q’ to Quit Table A-4 describes the field contents. The reports wrap so that the last five message reports are visible.
  • Page 68 When the test stops, the terminal displays a summary screen: AP PING TEST Total secs = 7.4 RF Secs = 6.7 Pings = 100 Packet size = 100 Timeouts = 4 [R]epeat or [Q]uit Figure A-9. Sample AP Ping Test Results Screen The summary shows: the elapsed time of the test total pings transmitted...

  • Page 69: Field Diagnostic Test

    VRC 6940 Product Reference Guide Field Diagnostic Test During the Field Diagnostic Test the terminal displays and updates this screen: AP PING TEST Association Indicator Ping Test Count Press ‘Q’ to Quit Figure A-10. The Field Diagnostic Test Table A-5 describes the field contents.
  • Page 70 When the test stops, the terminal displays a summary screen: FIELD DIAGNOSTICS Total secs = 8.2 RF Secs = 4.9 Pings = 100 Packet size = 100 Timeouts = 4 [R]epeat or [Q]uit Figure A-11. The Field Diagnostic Test Results Screen The summary shows: the elapsed time of the test total pings transmitted...

  • Page 71: Cfg24 Configurator Utility

    Starting the Utility There 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.

  • Page 72: The Configurator Menu

    The Configurator Menu The Configurator menu appears the first time you start the terminal, or if you launch the CFG24 program without parameters. A-12 shows Configurator menu options. Note that some terminals do not allow you to change the Subnet Mask Default Router addresses.

  • Page 73: Ess Id Or Net Id

    VRC 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.

  • Page 74: Default Router

    SUBNET MASK Enter SN Mask: 255.255.255.0 BkSp, CLR, Enter Default Router The 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 2.

  • Page 75: Terminal Ip Address

    1. Select Diversity to display the screen shown in 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.

  • Page 76: Mu Sleep Mode

    MU Sleep Mode If 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.

  • Page 77: Power Management

    VRC 6940 Product Reference Guide Boot Mode Options: Boot 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...

  • Page 78: Buffers

    Buffers To configure the terminal Buffers: 1. Select Buffers to display the screen shown in 2. Use the UP or DOWN arrow keys to select 3. Press CLEAR or ENTER to return to the main menu. BUFFERS Enter Buf Cnt: BkSp, CLR, Enter Figure A-22.

  • Page 79: Rate Control

    VRC 6940 Product Reference Guide Rate Control To configure the Rate Control: 1. Select Rate Control to display the screen shown in 2. Use the UP or DOWN arrow keys to select options, then press ENTER. For Spring protocol, RATE CONTROL...

  • Page 80: Flash Utility

    Utilities and Diagnostic Tests Flash Utility The 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.
  • Page 81 VRC 6940 Product Reference Guide A-22...

  • Page 82: Appendix B Software Environment

    Appendix B Software Environment This section describes the software environment for a VRC 6940 terminal. A VRC 6940 has four drives as described in Drive Size 256 Kb 256 Kb 160 Kb Table B-1: Table B-1. VRC 6940 Drives Type...

  • Page 83: Boot Sequence

    VRC 6940 Product Reference Guide Drive Size Boot Sequence The first time a new terminal powers up: 1. A:\config.sys loads drivers. 2. A:\autoexec.bat calls and runs 3. B:\autoexec.bat loads the application files contained in the LWP.HEX file by decompressing them into an application subdirectory on E:\ (see (LWP) Software on page 4.

  • Page 84: Lan Workplace (Lwp) Software

    LAN WorkPlace (LWP) Software All 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. CFG24 The CFG24 Configurator utility that allows you to configure the Spectrum24 radio.
  • Page 85 VRC 6940 Product Reference Guide Table B-2. VRC 6940: Software Files Directory File Name 2WAY3000.SYS (cont’d) S1.BIN CONFIG.SYS COMMAND.COM AUTOEXEC.BAT ERR3000.SYS PKUNZJR.COM FLASHDSK.SYS FLSHCTL.EXE FLSHFMT.EXE NET.CFG _AP.BAT NET.CFG FLSHAUTO.BAT FLSHAUT1.BAT MSG.MSG Description A Series 3000 Protocol Device Driver. For more information, see the Series 3000 System Software Manual (p/n 70-16310-XX).
  • Page 86 Table B-2. VRC 6940: Software Files Directory File Name APPINIT.COM (cont’d) CBT.COM WBT.COM WAIT.EXE GETSTR.EXE LSL.COM DIAG24.EXE CFG24.EXE BOOTP TCPIP.EXE PIPCT.EXE SS.BAT Software Environment Description Scans the flash disk for valid applications. If it finds more than one, it displays an application selection menu.
  • Page 87 VRC 6940 Product Reference Guide Table B-2. VRC 6940: Software Files Directory File Name TDREM.EXE (cont’d) FLASH.BAT RAMINIT.EXE RAMCHG.EXE RF_VER.COM RFOFF.COM UPD802 (sub-directory) TFTPC.COM TFTP.EXE TFTP.MSG LWP.MSG BGET.BAT Description Remote end of serial link used to transfer files to and from a terminal.
  • Page 88 Table B-2. VRC 6940: Software Files Directory File Name FGET.BAT (cont’d) UPDATE.BAT CHK_ID.EXE GETNUM.EXE IDENT.TXT SLAODI3K.COM (sub-directory) Software Environment Description 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...
  • Page 89 VRC 6940 Product Reference Guide...

  • Page 90: Appendix C Keyboard Layouts

    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 Combinations Unmodified Shift...
  • Page 91 VRC 6940 Product Reference Guide Table C-1. VRC 6940 Key Combinations Unmodified Shift Caplock Back Backspace Backspace Left Arrow Left Arrow Right Arrow Right Arrow Up Arrow Up Arrow Dwn Arrow Dwn Arrow Ctrl, Dwn Functional only on units equipped with the keyboard backlight option.
  • Page 92 Table C-1. VRC 6940 Key Combinations Unmodified Shift Caplock & > Shift, F1 Shift, F2 Shift, F3 Shift, F4 Shift, F5 Ctrl Func Shift+Func none ’ “ Ctrl, 2 < none none none Ctrl, 6 none ‘ none none Ctrl, -...

  • Page 93: Keyboard Character & Character Combination Illustrations

    VRC 6940 Product Reference Guide Keyboard Character & Character Combination Illustrations The captions indicate what sequence of modifier keys produce the keyboard character. FUNC and SHIFT-FUNC key combinations ASCII values, and printable characters/logical key sequence names. The keys are illustrated...
  • Page 94 Shift Shift Shift Shift Figure C-3. Shift-Modified Keyboard Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Figure C-4. Ctrl-Modified Keyboard Shift BACK CTRL ON/OFF Ctrl Ctrl CTRL ON/OFF Ctrl Ctrl Ctrl...
  • Page 95 VRC 6940 Product Reference Guide Dark Light BckLt* * Functions only on units equipped with the keyboard backlight option. Figure C-5. Func-Modified Keyboard Alt A Alt B Alt C Alt D Alt H Alt I Alt J Alt K Alt O...
  • Page 96 Figure C-7. Caplock-Modified Keyboard Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl Dark Light BckLt* Ctrl Ctrl Ctrl Ctrl Ctrl Ctrl * Functions only on units equipped with the keyboard backlight option. Figure C-8. Ctrl + Func-Modified Keyboard BACK O N/OFF FUNC Ctrl BACK...
  • Page 97 VRC 6940 Product Reference Guide 89 00 91 00 Shft F6 Shft F7 Shft F8 Shft F9 56 00 84 00 Shft F1 Dark Light BckLt* 25 80 16 81 74 45 53 63 * Functions only on units equipped with the keyboard backlight option.

  • Page 98: Appendix D Environmental And Technical Specifications

    Appendix D Environmental and Technical This appendix describes: physical, environmental, and operational information for VRC 6940 terminals reference information for the COM1 and scanner ports mappings for the null modem pinouts Specifications Table D-1 summarizes physical, operational, and environmental specifications for the VRC 6940.

  • Page 99: Scanner Port

    Storage Temperature RF Technology: 2.4 GHz Operating System Architecture Memory: FLASH Programming Tool Scanner Port The Scanner Port is located on the back panel of the VRC 6940. descriptions. Table D-2. Scanner Port Pin Descriptions Name BARDATA LEDEN LASERTRIGN LASEREN...

  • Page 100: Com1 Serial Port

    COM1 Serial Port The COM1 Serial Port is located on the back panel of the VRC 6940. descriptions. Table D-3. COM1 Serial Port Descriptions GROUND TRANSMIT DATA RECEIVED DATA REQUEST TO SEND CLEAR TO SEND DATA SET READY SIGNAL GROUND...

  • Page 101: Null Modem

    A 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 PC The cable has a 16-pin male circular connector, and a 25-pin female D-Connector.

  • Page 102: Appendix E. Communications Status Codes

    Appendix E Communications Status Codes Communications Status Codes When 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. associated with the status codes.
  • Page 103 VRC 6940 Product Reference Guide...

  • Page 104: Glossary

    Glossary Access Point A 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.
  • Page 105 Number of bits transmitted or received per second. BOOTP Bootstrap 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.
  • Page 106 See File Transfer Protocol. HEX Image A file format used for installing applications on the VRC 6940. The image may contain BIOS information, applications, and instructions for transferring the applications. Host...
  • Page 107 I/O Ports Input/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 Address A 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.
  • Page 108 Parity A 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 Card A 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.
  • Page 109 VRC 6940 Product Reference Guide Scanner An 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.
  • Page 110 Glossary Transmission 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. Vehicular Radio Computer.
  • Page 111 VRC 6940 Product Reference Guide Glossary-8...

  • Page 112: Index

    ....1-4 Accessories (optional) Alt + Func-modified keyboard ....C-6 Alt-modified keyboard Antenna, vehicle-mounted option .
  • Page 113 VRC 6940 Product Reference Guide Display ... . . 5-6 adjusting brightness ..... . . 6-2 blank .
  • Page 114 ..... 5-2 ON/OFF key Operation ....5-6 entering data power on suspend or off .
  • Page 115 VRC 6940 Product Reference Guide Terminal ....1-3 accessories ... . .A-12 configurator utility .
  • Page 116 VRC 6940 Product Reference Guide 72-37641-02 Revision B — June 2001 Symbol Technologies, Inc. One Symbol Plaza, Holtsville N.Y. 11742-1300...

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