Instruction/ maintenance manual of the product MH941 Dell
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METROLOGIC INSTRUMENTS, INC. MH941 Hand-Held Laser Scanner Installation and User’s Guide MLPN 2183 Printed in USA October 1998.
ii Locations : USA Corporate Headquarters Europe Metrologic Instruments, Inc. Metrologic Instruments GmbH 90 Coles Road Dornierstrasse 2 Blackwood, NJ 08012 82178 Puchheim b. Customer Service: 1-800-ID-METRO Munich, Germany Tel: 609-228-8100 Tel: 49-89-89018-0 Fax: 609-228-6673 Fax: 49-89-89019-200 info@metrologic.
iii Table of Contents Introduction and Identification .................................... 1 Unpacking List ................................................. 2 Connecting the MH941 Hand-Held Scanner to the Fixed Scanner and Host Device ...............
1 Introduction and Identification When using the MH941 scanner with a decoder not manufactured by Metrologic, scanner operation is dependent upon your decoder . Since there are many decoders ava ilable, refer to your decoder’s documentation concerning scanne r requirements and operation.
2 Unpacking List The following will be found in the shipping carton: ! Installation and User’s Guide ! MH941 Hand-Held Laser Scanner If anything is missing or to order additional items, contact your dealer, distributor or call Metrologic’s Customer Service Department.
3 Connecting the MH941 Hand-Held Scann er to the Fixed Scanner and Host Device In order for the MH941 scanner to maintain compliance with applicabl e standards, all circuits connected to the scanner (Example: power supply, hos t system , etc.) must meet the requirements for SELV ( S afety E xtra L ow V oltage) according to EN60950.
4 Figure 1 Co nnecting the MH941 Hand-Held Scanner to th e Decoder/Controller In order for the MH941 scanner to maintain compliance with applicabl e standards, all circuits connected to the scanner (Example: power supply, hos t system , etc.) must meet the requirements for SELV ( S afety E xtra L ow V oltage) according to EN60950.
5 Figure 2 Parts of the MH941 Scanner Becoming familiar with the features of the MH941 scanner will help whe n operating the scanner. The following illustration and list explain the pertinen t parts. Laser Output Window Th e laser beam emits from this aperture .
6 Audible Indicators There are audible indications that signal the status of your scanner. Thes e indicatio ns are dependent upon the decoder being used. The function of thes e indications may not work as described below if using a decoder not manufactured by Metrologic.
7 Signaux acoustiques Il existe d es signaux acoustiques qui vous informent sur l'état du scanner. Ce s signaux dépendent du décodeur que vous u tilisez. Il peut arriver que les fonctions de ce s signaux ne correspondent pas à celles qui suivent si vous utilisez u n décodeur qui n'a pas été construit par Metrologic.
8 Akustische Anzeigen Es sind akustische Anzeigen vorhanden, die Ihnen Aufschluß über de n Scann erstatus geben. Diese Anzeigen sind abhängig von dem von Ihne n verwendeten Dekodierer.
9 Segnali acustici Sono previ sti dei segnali acustici che Vi informano sullo stato dello scanner . Questi segnali dipendono dal decodificatore da Voi utilizzato. Se utilizzate u n de codificatore che non è stato fabbricato dalla Metrologic è possibile che l e funzioni di questi segnali non corrispondano a quelle qui di seguito indicate.
10 Visual Indicators There are visual indications that signal the status of your scanner. Thes e indicatio ns are dependent upon the decoder being used. The function of thes e indications may not work as described below if a decoder not manufactured by Metrologic is being used.
11 Signaux optiques Il existe des signaux optiques qui vous informent sur l'état du scanner. Ce s signaux dépendent du décodeur que vous u tilisez. Il peut arriver que les fonctions de ce s signaux ne correspondent pas à celles qui suivent si vous utilisez u n décodeur qui n'a pas été construit par Metrologic.
12 Optische Anzeigen Es sind optische Anzeigen vorhanden, die Ihnen Aufschluß über den Scannerstatus geben. Diese Anzeigen sind abhängig von dem von Ihnen verwendeten Dekodierer.
13 Segnali ottici So no previsti dei segnali ottici che Vi informano sullo stato dello scanner. Questi segnali dipendono dal decodificatore da Voi utilizzato. Se utilizzate un decodificatore che non è stato fabb ricato dalla Metrologic è possibile che le funzioni di questi segnali no n corrispondano a quelle qui di seguito indicate.
14 Labels The MH941 is a CDRH Class II laser system and an IEC Class I Laser System. Your unit w ill have a CDRH Class II caution label and an LASERKLASSE 1 l a bel affixed below the model number. The model number label is found on the bottom of the scanner’s head.
15 Figure 3 IR Sensor Activation This function is decoder/controller dependent. The scanning process is initiated by an infra red (IR) device that is found below the laser output window. The signal it projects extends approximately eight (8) inches beyond the output window (Refer to Figure 3) .
16 Figure 4 Scan Field The depth of field for the scanner is from the face of the output window to five (5) inches (Refer to Figure 4). If the scanner is in the stand, a bar code must be presented to the scanner. When holding the scanner, position the output window within five inches of the bar code.
17 Depth of Field and Symbol Specification (Refer to Figure 5) Code Type Minimum Small Code Density *Depth of Field Element Mil. (1/1000") UPC/EAN 10.4 80% 0" - 4" UPC/EAN 13.0 100% 0" - 5" Code 39 7.5 High 0" - 3" Code 39 12.
18 Figure 5.
19 Maintenance Smudges and dirt can interfere with the proper scanning of a bar code. Therefore, the output window will need occasional cleaning. 1. Spray glass cleaner onto lint free, non-abrasive cleaning cloth.
20 Appendix A Specifications Application: Hand-Held Laser Scanner Light Source: VLD 675 ± 5nm CDRH: Registered with CDRH, Class II laser product Maximum radiant power less than 1 mW IEC: IEC 825 Class I laser product Maximum radiant power less than 0.
21 Operational Depth of Field, UPC 100%: Up to 125mm (5") from face Scan Speed: 38 scan lines per second Scan Pattern: Single scan line Maintenance Required: Clean output window periodically Print Contrast: 35% minimum reflectance difference Roll, Pitch, Yaw: 42 E , 68 E , 52 E The following operations are decoder/controller dependent.
22 Appendix B MH941 Scan Head Pin Assignments Pin Signal Name Function 1 Flip Sense A square wave output signal that changes polarity when the scan mirror drive circuit changes the motor direction. The frequency is approximately 19 Hz to achieve a nominal 38 flips/scan per second.
23 4 Reserved 5 Proximity Detect The proximity detect is a momentary grounding switch. The controlling computer should provide a +5±.25 VDC pull up which can be grounded when the proximity detect activates. This indicates that an object has moved within scanning rage.
24 Appendix C Warranty and Disclaimer Limited Warranty Products manufactured by Metrologic have a 2-year limited warranty from date of manufacture. This warranty is limited to repair, replacement or refund at Metrologic’s discretion. Faulty equipment must be returned to the Metrologic facility in Blackwood, New Jersey or Puchheim, Germany.
25 Disclaimer Metrologic Instruments, Inc. and the author or authors make no claims or warranties with respect to the contents or accuracy of this publication, or the product it describes, including any warranties of fitness or merchantability for a particular purpose.
26 Appendix D Notices Notice This equipment has been tested and found to comply with limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
27 Anmerkung Nach Überprüfung dieses Geräts wurde festgestellt, daß es den Grenzwerten für Digitalgeräte der Klasse A gemäß Teil 15 der Richtlinien der US-amerikanischen Bundesbehörde für das Fernmeldewesen entspricht.
28 Appendix E Patents “Patent Information This METROLOGIC product may be covered by one or more of the following U.S. Patents: U.S. Patent No. 4,360,798; 4,369,361; 4,387,297; 4,460,120; 4,496,831; .
29 Index A G AC input/outlet 3 Germany (GmbH) ii, 24 Application 20 Good read 21 Asia ii Green LED 1, 5, 6, 10, 22 Assignments pin 22, 23 H B Beep 1, 3, 6, 21 Humidity 21 Beeper operation 21 C Indicat.
30 P Parts 5 Patents 28 Pin assignments 22, 23 Power supply 3, 4 Print contrast 21 R Red LED 1, 3, 5, 6, 10 Repair 24 Rights property 28 warranty 24 RMA 24 Roll, pitch, yaw 21 S Scan field 1, 10, 16 S.
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