Denso QS20H User Manual
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Denso QS20H User Manual

Denso QS20H User Manual

2d code scanner
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  • Page 1 2D Code Scanner QS20H User's Manual...
  • Page 2 Copyright © DENSO, 1999 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without prior notice. All products and company names mentioned are trademarks or registered trade-...
  • Page 3 Preface Please READ through these operating instructions carefully. It will enable you to operate your QS20H correctly. After you have finished reading the instructions, keep this manual handy for speedy reference.

  • Page 4: Safety Precautions

    Be sure to observe all these safety precautions. Please READ through this manual carefully. It will enable you to use the QS20H correctly. Always keep this manual nearby for speedy reference. Strict observance of these warning and caution indications are a MUST for preventing accidents which could result in bodily injury and substantial property damage.
  • Page 5 Failure to do so could cause fire or electrical shock. • If you drop the QS20H so as to damage its housing, immediately turn off the power, unplug the AC adapter from the wall socket, and contact your nearest dealer.
  • Page 6 Moisture or dust will get into the QS20H, resulting in malfunction, fire or electrical shock. • Do not place the QS20H anyplace where it may be subjected to oily smoke or steam, e.g., near a cooking range or humidifier. Doing so could result in a fire or electrical shock.
  • Page 7 CAUTION • If you will not be using the QS20H for a long time, be sure to unplug the AC adapter from the wall socket for safety. Failure to do so could result in a fire. • Never cover or wrap up the QS20H or AC adapter in a cloth or blanket.
  • Page 8 Exposure to power surges could result in a damaged QS20H or fire. • When taking care of the QS20H, unplug the AC adapter from the wall socket for safety. Failure to do so could result in an electrical shock.
  • Page 9 Proper Care of the QS20H To clean the housing, moisten a soft cloth with neutral detergent diluted with water and wring it out thoroughly. Wipe the QS20H with the cloth and then go over it again with a dry cloth.

  • Page 10: Table Of Contents

    Content Overviews Preface ........................SAFETY PRECAUTIONS ..................Chapter 1. How to Use ..................Chapter 2. Connecting the QS20H to the PC ............Chapter 3. Parameters and Defaults ..............Chapter 4. QR-coded Parameter Menu ............... Menu control .................... 10 Communications mode ................11 Communications conditions ..............

  • Page 11: Chapter 1. How To Use

    Reading confirmation LED Illuminates when the QS20H has read the code successfully. Beeper outlet The beeper sounds when the QS20H has read the code successfully Interface connector Via this connector, the QS20H exchanges data with the host computer. DC power jack Connect the AC adapter to this jack.
  • Page 12 • The illumination LED will turn on when the ambient environment is dark or the target code cannot be read easily. • If the QS20H fails to read due to specular effects or other factors, change the scanning angle of the scanning window or the distance from codes, and try it again.
  • Page 13 • The QS20H cannot support touch scanning. If you bring the scanning window into contact with a target code, the QS20H cannot read it. • The QS20H can read 2D codes omnidirectionally. Note that the target code including the margin should lie within the scanning range.
  • Page 14 If you press the trigger switch, the QS20H will become ready to scan. Bringing the scanning window to a 2D code or bar code will cause QS20H to read the code and send it to the connected PC or external equipment automatically.
  • Page 15 Reading split QR codes (registered as "Structured Append" at AIM) A QR code can be split into a maximum of 16 blocks. The QS20H can read split QR codes. Two reading modes of split QR codes are available—Edit mode and Non-edit mode.

  • Page 16: Chapter 2. Connecting The Qs20H To The Pc

    High frequencies may cause the QS20H to malfunction. • Do not set up the QS20H in places where it may be subjected to excessive dust or conductive dust (e.g., carbons or metallic powders). Electrical insulation failures may occur, resulting in a broken scanner.

  • Page 17: Chapter 3. Parameters And Defaults

    Chapter 3. Parameters and Defaults The table below lists the parameters and their default values. Note that the defaults given below are values preset when the QS20H leaves the factory. Some of the communications parameters and readable bar code settings may have been modified by dealers according to your needs.
  • Page 18 Parameter group Parameters Function Factory defaults Reading modes Reading MicroQR Disabled √ Enabled Reading black-and-white Black code on white inverted QR codes background √ White code on black background Edit/Non-edit mode for Edit mode √ split QR codes (“Structured Non-edit mode Append”) Reading PDF417 Disabled...

  • Page 19: Chapter 4. Qr-Coded Parameter Menu

    Make the QS20H ready for scan. Scan the "Start setting" code in the menu control shown on the next page. NOTE: If the "White code on black background" reading is set in the QS20H, scan the black-and-white inverted "Start setting" code.

  • Page 20: Menu Control

    Menu control "Start setting" (When the "White code on black background" is set) "Cancel" "Defaults" "End setting"...

  • Page 21: Communications Mode

    Communications mode Procedure "Non-acknowledge "ACK/NAK mode" mode" (default) Communications conditions Transmission rate "4800 bps" "9600 bps" "19200 bps" "38400 bps" (default) "57600 bps" "115200 bps"...
  • Page 22 Character length "7 bits" "8 bits” (default) Parity check "No" (default) "Even parity" "Odd parity" Stop bit length "1 bit" (default) "2 bits"...

  • Page 23: Transmission Format

    Transmission format Header "None" (default) "STX" Terminator "ETX" "CR" (default) "LF" "CR LF"...
  • Page 24 Transmission of code ID mark "Disabled" (default) "Enabled" Transmission of no. of digits "Disabled" (default) "Enabled" "Disabled" (default) "Enabled"...

  • Page 25: Reading Modes

    Reading modes Reading MicroQR "Disabled" (default) "Enabled" Reading black-and-white inverted QR codes "Black code "White code on white on black background" background" (default) Edit/Non-edit mode for split QR codes ("Structured Append") "Edit mode" "Non-edit mode" (default)
  • Page 26 Reading PDF417 "Disabled" (default) "Enabled" Reading MaxCode "Disabled" (default) "Enabled" Reading Data Matrix "Disabled" (default) "Enabled"...

  • Page 27: Readable Bar Codes

    Readable bar codes UPC-A/E and EAN-13/8 "Disabled" "Enabled" (default) Interleaved 2 of 5 "Disabled" "Enabled without "Enabled with check digits" check digits" (default) CODE128 "Disabled" "Enabled" (default)
  • Page 28 CODABAR (NW-7) "Disabled" "Enabled without "Enabled with check digits" check digits" (default) Transmission of start/stop codes for CODABAR (NW-7) "Disabled" "Enabled" (default)

  • Page 29: Other Settings

    CODE39 "Disabled" "Enabled without "Enabled with check digits" check digits" (default) Other settings Trigger switch control "Auto-off mode" "Alternate (default) switching mode" "Momentary "Continuous switching mode" reading mode"...
  • Page 30 Beeper control "Disabled" "Enabled" (default) Reading confirmation LED "Disabled" "Enabled" (default) Power saving mode "Ordinary mode" "Power saving (default) mode for standby"...

  • Page 31: Chapter 5. Communications

    Chapter 5. Communications The QS20H communicates with the connected PC or external equipment in accordance with the RS-232C. You may set various communications conditions by scanning QR-coded parameters printed in Chapter 4. Communications flow You may select either the non-acknowledge mode or the ACK/NAK mode.
  • Page 32 ACK/NAK mode Start * You may activate or deactivate Beeps when the QS20H the beeper by using the QR- has read a code.* coded parameter menu given in Chapter 4. Initializes the timer. CTS High? Transfers a single 2 seconds elapsed? character.

  • Page 33: Transmission Rate

    If not specified as binary codes, all data will be treated as ASCII codes. Listed below are port settings you can select. If data contains double-byte Japanese Kanji or binary data when the character length is set to 7 bits, the QS20H will ignore the MSB.
  • Page 34 Code ID marks Code ID marks are characters that identify the types of two-dimensional codes and bar codes. You may select whether those ID marks will be transferred, by using the QR-coded parameter menu. Code type Code ID mark QR code Split QR code in non-edit mode ("Structured Append") UPC-A or EAN-13 EAN-8...
  • Page 35 • QR Code All data read NOTE: If the QS20H reads split QR codes in Non-edit mode, it will transfer not only the read data but the ordinal ID number (a single byte in hex.) assigned to the split code, the number of splits (a single byte in hex.), and parity (double bytes in hex.).
  • Page 36 • UPC-E where, to X : Data digits C/D: Check digit • CODE39 and ITF (Interleaved 2 of 5) Data read except for the start/stop codes • CODE128 (EAN-128) Data read except for start/stop codes, FNC codes*, and check digit *Note that FNC1 placed in any positions except the 1st and 2nd positions immediately following the start code will be converted into GS (1Dh) and then transmitted.

  • Page 37: Appendix. Specifications

    Appendix. Specifications External dimensions 163 x 72 x 54 mm (6.42 x 2.83 x 2.13 inches) Weight 135 g 230 g (including interface cable) Interface cable length 2 m (78.74 inches) Scanning performance Resolution 0.25 mm (9.84 mils) min. for two-dimensional codes 0.15 mm (5.91 mils) min.
  • Page 38 CS (CTS) Ready to send Input RS (RTS) Request to send Output Wiring example Shown below is an example of wiring the QS20H up to the PC. QS20H RD 2 2 SD 3 RD SD 3 SG 5 5 SG...
  • Page 39 Interface circuits Output circuit Input circuit TXD, RTS RXD, CTS RS-232C LEVEL RS-232C LEVEL Voltage polarity Logical value Control level 0 (space) 1 (mark)
  • Page 41 The purpose of this manual is to provide accurate information in the handling and operating of the QS20H. Please feel free to send your comments regarding any errors or omissions you may have found, or any suggestions you may have for generally improving the manual.

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