Hand Held Products 3700 CCD manuale d’uso

R SCANTEAM 3700 CCD[...]

Disclaimer W elch Allyn, Data Collection, Inc. (d/b/a Hand Held Products) reserves the right to make changes in specifications and other information contained in this document without prior notice, and the reader should in all cases consult Hand Held Products to determine whether any such changes have been made. The information in this publication [...]

The CE mark on the product indicates that the system has been tested to and conforms with the provisions noted within the 89/336/EEC Electromagnetic Compatibility Directive and the 73/23/EEC Low V oltage Directive. Welch Allyn shall not be liable for use of our product with equipment (i.e., power supplies, personal computers, etc.) that is not CE m[...]

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i T ABLE OF CONTENTS Disclaimer Agency Compliance Chapter 1 SCANTEAM 3700 Description Section Page 1.1 Introduction 1–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 SCANTEAM 3700 Hardware Description 1–1 . . . . . . . . . . . . . . . . 1.2.1 Interface Port 1–2 . . . . . . . . . . . . . . . . . . . . [...]

ii Chapter 4 Configuring the SCANTEAM 3700 Section Page 4.1 Preparation 4–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2 Command Conventions 4–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3 Operational Commands 4–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.4[...]

iii Appendices A CCD Operation and Bar Code Scanning A.1 Objectives A–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A.2 Scanning and Decoding a Bar Code Symbol A–1 . . A.3 Bar Code Basics and Scanning T echniques A–4 . . . B T echnical Specifications B.1 Scanner Performance B–1 . . . . . . . . . . . . . . . . . . . . . .[...]

iv List of T ables T able Page 4.1 SCANTEAM 3700 Code ID V alues 4–7 . . . . . . . . . . . . . . . . . . . . . . 5.1 SCANTEAM 3700 T roubleshooting Checklist 5–2 . . . . . . . . . . . . . List of Illustrations Figure Page 2.1 Basic System Operation 2–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 3700 Fixed Mount CCD Dime[...]

v Preface Intended Audience This manual is written for users familiar with serial data communications. An understanding of integrated circuitry and bar code technology is recommended. Overview of the T echnical Manual Chapter 1 provides a brief description of SCANTEAM 3700 software and hardware. Chapter 2 discusses the system’ s hardware, includi[...]

vi Related Publications Reading Between the Lines: An Introduction to Bar Code T echnology Craig K. Harmon and Russ Adams  1989 Helmers Publishing Inc. 174 Concord Street Peterborough, NH 03458 (603) 924–9631 The Bar Code Book: Reading, Printing, and Specification of Bar Code Symbols Roger C. Palmer  1989 Helmers Publishing Inc. 174 Concord[...]

SCANTEAM 3700 Description 1–1 SCANTEAM 3700 DESCRIPTION 1 1.1 Introduction The Hand Held Products SCANTEAM 3700 is a fixed mount CCD bar code scanner with integral decoder for easy integration into host equipment. T ypical host equipment with bar code requirements satisfied by the 3700 include automated clinical chemistry analyzers, pharmaceutica[...]

1–2 SCANTEAM 3700 Description Communication is achieved using full duplex, asynchronous serial ASCII through a bidirectional RS–232 connection to the host system. The host defines or sets the configurable features and controls the operation of the 3700. The 3700’ s configuration may be stored in non–volatile memory . Note : In this manual, [...]

System Hardware Description 2–1 SYSTEM HARDW ARE DESCRIPTION 2 2.1 Introduction The major components of the system are the SCANTEAM 3700 Machine Mount CCD and the host instrument or equipment. Electrical power is generally supplied to the 3700 Machine Mount CCD by the host system. Figure 2.1 shows the functional relationships between the componen[...]

2–2 System Hardware Description 2.2 General Characteristics of the 3700 2.2.1 Mechanical Layout of the 3700 Figure 2.2 shows several views of the SCANTEAM 3700 Machine Mount CCD, including general dimensions, the location of connectors, and the scanner window . 3.5” [88.9] 1.05” [26.7] 2.9” [73.7] T op View Side View Interface Port (I/O Com[...]

System Hardware Description 2–3 2.2.2 Single Modular Input / Output / Power Port The interface port is an 8–pin female modular connector used for attaching the Asynchronous Serial Communications Interface Cable. Allows triggering capability (at pin 2) for an external triggering device, such as an object sensor or a switch. Power and ground conn[...]

2–4 System Hardware Description 2.4 Scanner/Host Communication The RS–232 communications interface of the 3700 is used for entering configuration commands from a PC or host instrument for specific application requirements. The communications I/O port also sends decoded bar code data to the host. 2.4.1 Communications Port The communications port[...]

System Hardware Description 2–5 ACK/NAK are ASCII characters that allow the receiving device to tell the sending device to repeat a data message that contains errors. If enabled, the 3700 expects to receive an ACK (positive acknowledgement of data transmission) or a NAK (negative acknowledgement of data transmission) from the host after each mess[...]

2–6 System Hardware Description 2.5 Power Requirements DC operating voltage is +5 volts and consumes approximately 200 milliamps when scanning. Refer to Appendix B for a complete description of voltage range, current consumption levels, and pin assignments.[...]

Set–Up and Installation 3–1 SET–UP AND INST ALLA TION 3 3.1 Introduction This chapter explains the SCANTEAM 3700 Machine Mount CCD set–up for use in the design lab and a brief description of installation in a host instrument. The set–up procedures are intended for a technician or design engineer to explore the functions and features of th[...]

3–2 Set–Up and Installation MADE IN USA P A TENT 5,294,783 ST3700 NEAR CONTACT DECODED OUTPUT ITEM# 3700-XYZ SOFTWARE# 31203795-XYZ DA TE - S/N H-04-1234 www.welchallyn.com Enlarged View of Label Figure 3.1 SCANTEAM 3700 Identification Label 3.3 Set–up Procedure for Evaluation of the 3700 Caution: The 3700 contains static sensitive components[...]

Set–Up and Installation 3–3 3.3.2 Set–up Procedure This procedure will verify that bar code scanning and communications between the host and the 3700 has been established. T o setup serial communications to the scanner 1) Connect the RS–232 communications (I/O) cable between the 3700 and the PC serial port. (Y ou may require a 25 pin to 9 p[...]

3–4 Set–Up and Installation 3.4 Installation in the Host Instrument Caution: The 3700 contains static sensitive components. Precautions must be taken to eliminate potential static discharge to the 3700. Installation in the host instrument includes the following activities: 1) Power down the host system or instrument. 2) Mount the SCANTEAM 3700 [...]

Set–Up and Installation 3–5 millimeters in brackets [mm] 3.5” [88.9] Mounting Screw Location #6–32 UNC–2B or M3.5 (4 Places) 1.75” [44.5] .375” [9.5] 2.75” [69.9] Side View T op View .31” [7.9] Nominal Optics Center Line ✺ ✺ Installation should provide adjustment to align the optical center line on the intended target. This ad[...]

3–6 Set–Up and Installation The 3700 Machine Mount CCD may be oriented in any way so that the beam scanning path moves across the bar code as shown in Figure 3.3. Bar code presentation to the scanner is important for successful scanning of the label. The first requirement is that the beam scan path cross all bars on the label, as well a 0.25 in[...]

Set–Up and Installation 3–7 TIL T Rotation about the Z–axis controlled by bar code length and height Bar Code Label SKEW OR Y A W Rotation about the X–axis ± 30 ° Bar Code Label PITCH OR ROLL Rotation about the Y–axis ± 7 ° Bar Code Label R = Rotation THE ABOVE DEFINITIONS ARE FROM AIM SPECIFICA TIONS  Rear View R R R (0 to –10 ?[...]

3–8 Set–Up and Installation Minimum clearance required for scanner illumination of target. [ 3.1” [78.7] T op View 1.55” [39.4] 15 ° – NOM – Focal Plane = [ Illumination area is larger than receive area. Receive path / area. [ = Side View .2” [5.1] .61” [15.5] 2 ° 2 ° 3.5” [88.9] 2.4” [61] 27 ° millimeters in brackets [mm] F[...]

Configuring the SCANTEAM 3700 4–1 CONFIGURING THE SCANTEAM 3700 4 4.1 Preparation This chapter provides instructions for configuring the software in the SCANTEAM 3700 Machine Mount CCD. The configuration process allows you to change the operating parameters of the scanner software to explore the functions of the 3700. The user–defined configura[...]

4–2 Configuring the SCANTEAM 3700 4.2 Command Conventions The following conventions apply when entering configuration commands: • Actual serial configuration command entries are highlighted in bold to distinguish them from descriptive text. • Spaces shown within command strings must not be included in the actual string; they are for clarity o[...]

Configuring the SCANTEAM 3700 4–3 4.3 Operational Commands Five operational commands recognized by the SCANTEAM 3700 are: <A> – resets the 3700 DC4 – disables bar code scanning DC2 – enables bar code scanning <1> – serial trigger <Z> – saves current configuration in non–volatile memory . Explanations, ASCII and hex c[...]

4–4 Configuring the SCANTEAM 3700 Serial T rigger Command <1> COMMAND ASCII Hex Characters Serial T rigger <1> 3C 31 3E Sending the operational command <1> sends a serial trigger to scanner port “1.” If the T rigger Mode for Port “1” is set to allow serial triggers, the 3700 enables the Machine Mount CCD and attempts to [...]

Configuring the SCANTEAM 3700 4–5 4.4 Configuration Commands Fifteen configuration commands recognized by the SCANTEAM 3700 are: Ka – sets communication port Kd – sets preamble Ke – sets postamble Kf – sets communications protocol Kg – sets trigger mode Kh – sets read timeout Kk – sets no read message Km – sets votes Kp – sets C[...]

4–6 Configuring the SCANTEAM 3700 Set Communications Port Command Ka COMMAND <Ka baud, parity , stop bits, data bits> Parameter ASCII Option Baud 0 600 1 1200 2 2400 3 4800 4 9600 * 5 19,200 6 38,400 Parity 0 none 1 even * 2 odd Stop Bits 0 one * 1 two Data Bits 0 seven * 1 eight Sending the configuration command Ka sets the communications [...]

Configuring the SCANTEAM 3700 4–7 Set Preamble Command Kd COMMAND <Kd enable, data> Parameter ASCII Option Enable 0 no 1 yes * (Port ID, Code ID) Data one to four ASCII characters Sending the configuration command Kd sets the preamble characters. The preamble option may be enabled or disabled; if enabled, up to four preamble characters may [...]

4–8 Configuring the SCANTEAM 3700 Set Postamble Command Ke COMMAND <Ke enable, data> Parameter ASCII Option Enable 0 no 1 yes * (CR, LF) Data one to four ASCII characters Sending the configuration command Ke sets the postamble characters. The postamble option may be enabled or disabled; if enabled, up to four postamble characters may be def[...]

Configuring the SCANTEAM 3700 4–9 Set Communications Protocol Command Kf COMMAND <Kf mode> Parameter ASCII Option Mode 0 Disable R TS/CTS * Disable XON/XOFF * Disable ACK/NAK * Mode 1 Enable R TS/CTS Disable XON/XOFF Disable ACK/NAK Mode 2 Disable R TS/CTS Enable XON/XOFF Disable ACK/NAK Mode 3 Enable R TS/CTS Enable XON/XOFF Disable ACK/NA[...]

4–10 Configuring the SCANTEAM 3700 Set T rigger Mode Command Kg COMMAND <Kg mode_global, mode_port_1, mode_port_2, #> Parameter ASCII Option Mode 0 Continuous Read Mode 1 Continuous Read, Send Once, Clear on Timeout Mode 2 External Trigger , Read While Active Mode 3 External Trigger , Read Once Mode 4 Serial Trigger Mode 5 Serial Trigger or[...]

Configuring the SCANTEAM 3700 4–1 1 Set No Read Message Command Kk COMMAND <Kk enable, data> Parameter ASCII Option Enable 0 no 1 yes * (NR) Data one to seven ASCII characters Sending the configuration command Kk sets the no read message. Any ASCII character can be specified except NUL, ACK, NAK, DC1, DC2, DC3, DC4 or DEL. The default setti[...]

4–12 Configuring the SCANTEAM 3700 Set Code 39 Command Kp COMMAND <Kp enable, requir e checksum, send checksum, minimum length, maximum length> Parameter ASCII Option Enable 0 no 1 yes * Require Checksum 0 no * 1 yes Send Checksum 0 no * 1 yes Minimum Length Set from 1 to 48 * (1) Maximum Length Set from 1 to 48 * (48) Sending the configura[...]

Configuring the SCANTEAM 3700 4–13 Set I 2 of 5 Command Kr COMMAND <Kr enable, require checksum, send checksum, minimum length, maximum length> Parameter ASCII Option Enable 0 no * 1 yes Require Checksum 0 no * 1 yes Send Checksum 0 no * 1 yes Minimum Length Set from 2 to 80 * (6) Maximum Length Set from 2 to 80 * (80) Sending the configura[...]

4–14 Configuring the SCANTEAM 3700 Set Code 128 Command Kt COMMAND <Kt enable, minimum length, maximum length> Parameter ASCII Option Enable 0 no 1 yes * Minimum Length Set from 1 to 80 * (1) Maximum Length Set from 1 to 80 * (80) Sending the configuration command Kt sets Code 128 and all its parameters: enable/disable, minimum length, and [...]

Configuring the SCANTEAM 3700 4–15 4.5 Configuration Status Query Commands The configuration status query commands are used to obtain a status listing of the configuration command selections. Y ou may request a listing of the entire series of individual configuration status messages or you may request the status of a single configuration status m[...]

4–16 Configuring the SCANTEAM 3700 4.6 Default Operating Parameters The SCANTEAM 3700 is configured at the Hand Held Products factory with standard (default) operating parameters. The default configuration can be used as is or changed (reconfigured) by downloading new parameters over an RS–232 communications line from a host instrument. The def[...]

Service/T echnical Assistance 5–1 SER VICE/TECHNICAL ASSIST ANCE 5 5.1 Maintenance The Hand Held Products SCANTEAM 3700 Machine Mount CCD Bar Code Scanner and Decoder is designed to provide reliable and efficient operation, requiring no routine maintenance. The 3700 has no moving physical parts. Convection air flow serves to cool the unit. Mainte[...]

5–2 Service/T echnical Assistance 5.2.2 Diagnostic Procedure The SCANTEAM 3700 Machine Mount CCD may be reset to the last saved configuration parameters by issuing a Reset Command. (A list of these parameters may be found on in section 4.6 and C.4.) • T o perform a Reset Command, send an <A> serial command to the 3700. This action causes [...]

Service/T echnical Assistance 5–3 5.3 Obtaining Factory Service Hand Held Products provides service for all its products through a service center located at its manufacturing facilities in Skaneateles, New Y ork. T o obtain warranty or non–warranty service, return the unit to Hand Held Products (postage paid) with a copy of the dated purchase r[...]

5–4 Service/T echnical Assistance Japan Office Hand Held Products Bon Marusan 8F 3–5–1 Kanda–Jinbocho Chiyoda–ku T okyo 101, Japan T elephone: Int+81–3–5212–7392 Fax: Int+81–3–3261–7372 For service in Latin America, please contact your Hand Held Products’ representative (at the address that follows) or your local distributor[...]

Service/T echnical Assistance 5–5 The following information is required to process an RMA for the product and should be available for the Service Representative. It is located on the manufacturers label attached to the box the SCANTEAM 3700 was shipped in. Model Number Serial Number Date of Manufacture Note: The Welch Allyn Customer Service Group[...]

5–6 Service/T echnical Assistance[...]

CCD Operation and Bar Code Scanning A–1 CCD OPERA TION AND BAR CODE SCANNING A A.1 Objectives This appendix describes: • Reading and decoding a bar code symbol. • Overview of how the SCANTEAM 3700 works, including a scanner diagram with the main decoding elements listed. • In–depth discussion of the operation of the scanner , including a [...]

A–2 CCD Operation and Bar Code Scanning 2. The black bars on the symbol absorb the LED light, while the white spaces scatter the LED light. 3. A portion of the scattered light re–enters the scanner ’ s optical system and is detected by the pixels of the CCD (Charged Coupled Device). 4. The CCD converts the returned light into a sequence of el[...]

CCD Operation and Bar Code Scanning A–3 Microprocessor The microprocessor controls the generation of timing signals required for the operation of the SCANTEAM 3700 device. Additionally it monitors the digital output of the device, configures the operating parameters sent through serial commands (as required), and decodes the scanned bar code data[...]

A–4 CCD Operation and Bar Code Scanning A.3 Bar Code Basics and Scanning Tips A Closer Look At Bar Code Symbols 42000 06200 0 The illustration at the right shows a typical bar code symbol. If you look at it closely , you’ll see it is composed of a series of dark lines (bars) and white areas (spaces) of various widths. By arranging these bars an[...]

T echnical Specifications B–1 TECHNICAL SPECIFICA TIONS B B.1 Scanner Performance The SCANTEAM 3700 performance has been measured in terms of the first bar elongation/contraction and inner bar (space) elongation/contraction when scanning W elch Allyn test targets. If you need more information on these measurements, contact your W elch Allyn repre[...]

B–2 T echnical Specifications Focal Distance (selected at time of order) from scanner window: Focal Distance Maximum Scan Width 0.6 inches [15mm] with a 3 inch [76mm] maximum scan width 1.95 inches [50mm] with a 3.5 inch [89mm] maximum scan width 3.2 inches [81.3mm] with a 3.5 inch [89mm] maximum scan width MRD (minimum reflective difference): 37[...]

T echnical Specifications B–3 B.3 Electrical Specifications Operating V oltage: +5V+ 5% ✺ Operating Current: 170 to 250 mA, ✺ depending on scan rate for Standard Resolution / Enhanced Performance CCD type ✺ Power for the SCANTEAM 3700 is provided by the host system. Communications Port Connector Pin Assignments: See chart below . 11 0 10–[...]

B–4 T echnical Specifications Indicators: Beeper . See descriptions below . Beeper The good read/no read beeper indicator is configurable and can be disabled, if desired. B.4 Environmental Specifications Operating T emperature: 32 ° F to 122 ° F (0 ° C to +50 ° C) Storage T emperature: –40 ° F to 158 ° F (–40 ° C to +70 ° C) Relative [...]

T echnical Specifications B–5 B.6 Bar Code Symbol Specifications All bar code symbols should satisfy the appropriate AIM Uniform Symbology Specification. Background Substrate The bar code symbol should be printed on material which is reflective and has a matte (not glossy) finish. A background diffuse reflectance of at least 70% to 80% is desirab[...]

B–6 T echnical Specifications B.7 SCANTEAM 3700 Interface Cable 10 Pin RJ41 Modular Connector Pinouts 1 2 Shield/Drain 3 TRIG – T rigger/Enable (input) 4 GND– Ground 5 RX – Receive Data (input) 6 TX – Transmit Data (output) 7 VCC (+5VDC – input) 8 RTS – Ready to Send (output) 9 CTS – Clear to Send (input) 10 Connector Pinouts 1 TRIG[...]

Serial Commands Summary C–1 SERIAL COMMANDS SUMMAR Y C C.1 Configuration Commands The following is a summary of configuration commands sent by the host system. More details are provided in Section 4.4, Configuration Commands. Note: These commands may contain port–specific data not relevant to the SCANTEAM 3700 machine mount CCD. This extra data[...]

C–2 Serial Commands Summary C.2 Operational Commands The following is a summary of operational commands sent by the host system. More details are provided in Section 4.3, Operational Commands. Command Format Reset Command <A> Disable Scanning Command DC4 Enable Scanning Command DC2 Serial T rigger Command <1> Save Configuration Comman[...]

Serial Commands Summary C–3 C.4 Default Configuration Settings The following is a summary of default configuration settings. Configuration Command Default Settings ACK / NAK Disabled Baud Rate 9600 Beeper Mode Disable beeper Data Bits: 7 No Read Message “NR” Parity Even Postamble CR LF Preamble Port ID Code ID Read T imeout T imeout ends a re[...]

C–4 Serial Commands Summary[...]

ASCII Conversion T able D–1 ASCII CONVERSION T ABLE D bbbbbbb 74 5 6 321 COLUMN ROW 0 0 1 1 1 0 0 1 1 0 1 1 1 0 0 0 0 0 1 0 1 0 1 0 1 1234567 BIT NUMBERS 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0000 000 0 1 00 1 11 1 11 1 1 1 11 1 1 1 1 1 1 1 1 1 1 11 1 1 1 1 1 1 11 00 00 0 00 00 0 000 00 00 0 0 0 0 0 NUL SOH STX ETX EOT ENQ ACK BEL BS HT LF VT FF [...]

D–2 ASCII Conversion T able[...]

Glossary–1 SCANTEAM 3700 GLOSSAR Y AIM– is the Automatic Identification Manufacturers, Inc. AIM is an industry organization that supports the application of all varieties of automatic identification technology including bar codes. An important contribution has been AIM’ s efforts to standardize bar code symbologies and the way they are identi[...]

Glossary–2 Buffer– refers to a storage facility in a data communications system which can compensate for a difference in time or rate of data transmission. Byte– is a group of 8 bits handled as a unit. Character (Bar code)– is group of bars and spaces which represents a single number , letter , mark or other graphic element. Check Character[...]

Glossary–3 Digital – (used in contrast to Analog) describes a coded squarewave signal (processed from an analog signal) which is utilized by decoding circuitry . Digital bar code is generally square wave pulses (0 to 5 volts) with widths which depict the bar and space widths in the code. DIP – is an acronym for “dual in–line pins,” a ty[...]

Glossary–4 Minimum and Maximum Message Lengths – refers to how the various symbologies may be restricted in code length to minimize the chances of misreading a bar code. By setting the message length, the decoder will count the data characters plus any others (start/stop, check digit, etc.) and only accept those bar code reads that fall within [...]

Glossary–5 Scan Rate – is the number of times a laser ’ s scanning beam passes through the exit window in one second. Scan V elocity – is the speed of a laser ’ s scanning beam on a target at a given distance from the front of the scanner or rotating polygon mirror . Usually expressed in inches/sec. Scan Width – is the length of the wid[...]

Glossary–6[...]

Index–1 INDEX A AIM Publications, vi ASCII Conversion T able, D-1 Control F unction Definitions, D-1 A uxiliary T rigger, 2-5 B Bar Code Basics and Scanning T echniques, A-4 Bar Code Scanning, A-4 Bar Code Symbols, A-4 Bar Code Symbol Specifications, B-5 Background Substrate, B-5 Definition, B-5 Ink Color and T ype, B-5 T olerance, B-5 V oids and[...]

Index–2 I Identification Label, 3-2 Indicator, 2-3 A udible Indicator, 2-3 Installation in Host Instrument, 3-4 See also Evaluation Use; T roubleshooting Guide Interface Cable. See SCANTEAM 3700, Interface Cable Interface P ort, 1-2 See also Electrical Specifications L LED R eflector, A-2 M Maintenance, 5-1 Mechanical Layout, 2-2 Mechanical Speci[...]

Index–3 Serial Commands, 4-1 Command Conventions, 4-2 Command F ormat, 4-2 Configuration Commands, 4-5 Set Beeper Mode Command, 4-14 Set Codabar Command, 4-12 Set Code 128 Command, 4-14 Set Code 39 Command, 4-12 Set Communications P ort Command, 4-6 Set Communications Protocol Command, 4-9 S e tI2o f5 Command, 4-13 Set No R ead Message Command, 4[...]

Index–4[...]

SCANTEAM 3700 LIMITED W ARRANTY W elch Allyn, Inc., hereby warrants its Machine Mount CCD Scanner to be functional and free from manufacturing defects at the time of delivery . W elch Allyn, Inc. further warrants that it will replace or repair , at its option, any unit that fails to perform according to W elch Allyn’ s published specifications du[...]

Skaneateles Falls, New Y ork 13153–0187 3700/TM 4619 Jordan Road Rev E P .O. Box 187[...]