Symbol SE6700 Integration Guide
Symbol SE6700 Integration Guide 72E-93549-01 Revision A July 2007
ii Symbol SE6700 Integration Guide © 2007 by Motorola, 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 Motorola. 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.
iii Revision History Changes to the original manual are listed below: Change -01 Rev A Date 7/2007 Description Initial Release.
iv Symbol SE6700 Integration Guide
Table of Contents About This Guide Introduction .................................................................................................................... Chapter Descriptions ..................................................................................................... Notational Conventions.................................................................................................. Referenced Documents ..................................................................................
vi Symbol SE6700 Integration Guide Chapter 3: Technical Specifications Overview ....................................................................................................................... SE6700 Specifications .................................................................................................. Image Sensor Specifications ........................................................................................ Skew, Pitch and Roll ...................................................
About This Guide Introduction The Symbol SE6700 Integration Guide discusses the theory of operation, installation, and specifications of the engine, and how to integrate the engine into data capture devices. NOTE This guide provides general instructions for the installation of the engine into a customer's device. It is recommended that an opto-mechanical engineer perform an opto-mechanical analysis prior to integration. Chapter Descriptions The manual includes the following chapters.
viii Symbol SE6700 Integration Guide Notational Conventions The following conventions are used in this document: • 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. Referenced Documents • Symbol PL6707 Decoder Integration Guide, p/n 72E-94096-xx • The I2C-Bus Specification, Version 2.1, http://www.semiconductors.philips.
Chapter 1 Getting Started CAUTION Per FDA and IEC standards, the engine described in this guide is not given a laser classification. However, the following precautions should be observed: This laser component emits CDRH Class II/IEC Class I laser light. Do not stare into beam. Overview The Symbol SE6700 provides digital images which can be transmitted to the PL6707 decoder to decode a bar code of any format supported by the decoding software. The Symbol SE6700 uses laser aiming and LED illumination.
1-2 Symbol SE6700 Integration Guide Figure 1-1 provides a block diagram of the imager system. Sensor Clock Oscillator I2 C Monochrome Mega PIxel CMOS Image Sensor Pixel Data & Camera Control Laser & Drive Circuitry (Aiming) LED Drive Circuitry Aim Enable Illumination Enable Figure 1-1 Symbol SE6700 Block Diagram A 30-pin ZIF connector on the Symbol SE6700 connects the engine and the PL6707 decoder via a 40 mm flex (available from Symbol, p/n 15-99087-01, via KT-SE6700-02/02R).
Getting Started 1-3 Aiming System A 650 nm laser and a DOE generate a laser-aiming pattern which represents the imager's field of view throughout its entire depth of field. The aiming subsystem uses a visible laser diode, a lens, and a diffractive optical element to generate the aiming pattern. The pattern's center cross hairs indicates the center of the field of view.
1-4 Symbol SE6700 Integration Guide
Chapter 2 Installation Overview This chapter provides information for mounting and installing the Symbol SE6700, including physical and electrical considerations, and recommended window properties for the SE6700. General Information Electrostatic Discharge (ESD) The Symbol SE6700 is protected from ESD events that may occur in an ESD-controlled environment.
2-2 Symbol SE6700 Integration Guide Mounting There are four mounting holes (#0 - 48) and two locator holes on the bottom of the chassis (see Figure 2-1). The Symbol SE6700 can be mounted in any orientation without degradation in performance. NOTE Mounting the Symbol SE6700 in a non-upright position results in images rotated accordingly in snapshot or video mode. When installing the mounting screws, ensure they do not protrude past the mounting hole depth (6.0 mm) in the chassis; use 5.
Installation 2-3 Housing Design NOTE Opto-mechanical analysis is recommended for housing design to ensure optimal scanning or imaging performance. Design the housing so that internal reflections from the illumination system are not directed back toward the engine. The reflections from the window can cause problems, and for particular window tilt angles, these reflections can bounce off the top or bottom of the housing and reach the engine.
2-4 Symbol SE6700 Integration Guide Window Material Many window materials that look clear can contain stresses and distortions that reduce performance. For this reason, only cell-cast plastics or optical glass is recommended (with or without an anti reflection coating, depending on the application). Following are descriptions of three popular window materials: PMMA, ADC (CR-39TM), and chemically tempered float glass. Table 2-1 outlines the suggested window properties.
Installation 2-5 Polysiloxane Coating Polysiloxane type coatings are applied to plastic surfaces to improve the surface resistance to both scratch and abrasion. To gauge a window's durability, use ASTM standard D1044, Standard Test Method for Resistance of Transparent Plastics to Surface Abrasion (the Taber Test), which quantifies abrasion resistance as a percent increase in haze after a specified number of cycles and load.
2-6 Symbol SE6700 Integration Guide Optical Path and Exit Window Notes: Unless otherwise specified: • • • Recommended exit window information: • Exit window to be placed at a maximum distance of 6.0 mm from lower chassis corner to inner window surface. • To avoid illumination light reflecting back into engine, the minimum exit window tilt angle is 26.0o. • Minimum clear aperture: Vertical = 19.2 mm / 0.756 in. Horizontal = 19.0 mm / 0.748 in General tolerance: ±0.25 mm / ±0.01 in.
Chapter 3 Technical Specifications Overview This chapter provides the technical specifications of the Symbol SE6700. Decode zone and exit window characteristics are also provided. SE6700 Specifications Table 3-1 Symbol SE6700 Technical Specifications at 23° C Item Power Requirements Input Voltage Description VCC_CAMERA: VCC_AIM: VCC_ILLUM: VCC_CAMERA: VCC_AIM: VCC_ILLUM: 3.0 V to 3.6 V 3.0 V to 3.6 V 4.5 V to 5.5 V 100 mA typical @ 3.3 V 40 mA typical @ 3.
3-2 Symbol SE6700 Integration Guide Table 3-1 Symbol SE6700 Technical Specifications at 23° C (Continued) Item Description Skew Tolerance ± 60º from normal (see Figure 3-1 on page 3-5) Pitch Angle ± 65º from normal (see Figure 3-1 on page 3-5) Roll 360º (see Figure 3-1 on page 3-5) Ambient Light Immunity for Bar Code Capture (Maximum) 9000 ft.
Technical Specifications Table 3-1 Symbol SE6700 Technical Specifications at 23° C (Continued) Item Laser Class Description The engine, by itself, is an unclassified component. It is intended for use in CDRH Class II/IEC Class 1 devices with proper housing, labeling, and instructions to comply with federal and/or international standards.
3-4 Symbol SE6700 Integration Guide Image Sensor Specifications Table 3-2 Symbol SE6700 Technical Specifications at 23° C Item Description Optical Format 0.5” (5:4) Active Imager Size 0.26 in. H x 0.21 in. V (6.66 mm H x 5.32 mm V) Active Pixels 1,280 H x 1,024 V Pixel Size 5.2 µm x 5.2 µm Shutter Type Electronic Rolling Shutter (ERS) Data Rate/Master Clock 48 MPS / 48 MHz Frame Rate SXGA (1280 x 1024) 30 fps progressive scan; programmable ADC Resolution 10-bit, on-chip Responsivity 2.
Technical Specifications 3-5 Skew, Pitch and Roll Measured on a 20 mil Code 39 symbol at a distance of 10 inches. Tolerance is reduced at extreme ends of the working range. Pitch Skew + 65° from normal + 60° from normal Roll 360° Note: Tolerances are reduced at extreme ends of the working range.
3-6 Symbol SE6700 Integration Guide Decode Zones Standard Range The decode zone for the SE6700-SR Standard Range is shown in Figure 3-2. Typical values are shown. Table 3-3 lists the typical and guaranteed distances for selected bar code densities. The minimum element width (or “symbol density”) is the width in mils of the narrowest element (bar or space) in the symbol. Note: Typical performance at 73°F (23°C) on high quality symbols in normal room light. Vcc = 3.3V SE6700 5 mil 2.5 6.
Technical Specifications Table 3-3 SE6700-SR Standard Range Decode Distances Symbol Density/ Bar Code Type Bar Code Content/ ContrastNote 2 Typical Working Ranges Near Far Guaranteed Working Ranges Near Far 5.0 mil Code 39 ABCDEFGH 80% MRD 2.5 in 6.35 cm 7.0 in 17.78 cm 3.0 in 7.62 cm 6.0 in 15.24 cm 6.67 mil PDF417 4 Col, 20 Rows 80% MRD 3.0 in 7.62 cm 6.8 in 17.27 cm 3.5 in 8.89 cm 6.0 in 15.24 cm 7.5 mil Code 39 ABCDEF 80% MRD 2.5 in 6.35 cm 9.0 in 22.86 cm 2.9 in 7.37 cm 7.
3-8 Symbol SE6700 Integration Guide Document Capture The decode zone for the SE6700-DC Document Capture is shown in Figure 3-3. Typical values are shown. Table 3-4 lists the typical and guaranteed distances for selected bar code densities. The minimum element width (or “symbol density”) is the width in mils of the narrowest element (bar or space) in the symbol. Note: Typical performance at 73°F (23°C) on high quality symbols in normal room light. Vcc = 3.3V SE6700 5 mil 4.2 10.0 6.67 mil PDF417 4.8 9.
Technical Specifications Table 3-4 SE6700-DC Document Capture Decode Distances Typical Working Ranges Guaranteed Working Ranges Symbol Density/ Bar Code Type Bar Code Content/ ContrastNote 2 5.0 mil Code 39 ABCDEFGH 80% MRD 4.2 in 10.67 cm 10.0 in 25.40 cm 5.0 in 12.70 cm 8.5 in 21.59 cm 6.67 mil PDF417 4 Col, 20 Rows 80% MRD 4.8 in 12.19 cm 9.8 in 24.89 cm 6.0 in 15.24 cm 8.5 in 21.59 cm 7.5 mil Code 39 ABCDEF 80% MRD 2.5 in 6.35 cm 14.3 in 36.32 cm 3.3 in 8.38 cm 12.3 in 31.
3 - 10 Symbol SE6700 Integration Guide Decode Distances in Darkness Table 3-5 Decode Distances in Darkness Symbol Density/ Bar Code Type Bar Code Content/ ContrastNote 2 5.0 mil Code 39 ABCDEFGH 80% MRD 6.67 mil PDF417 7.5 mil Code 39 10 mil I 2 of 5 10 mil PDF417 13 mil UPC-A 4 Col, 20 Rows 80% MRD ABCDEF 80% MRD ITF-14 2:5:1 3 Col, 17 Rows 80% MRD 012345678905 80% MRD Typical Working Ranges Focus Position Near Far Standard Range 2.5 in 6.35 cm 7.0 in 17.78 cm Document Capture 4.
Technical Specifications 3 - 11 Table 3-5 Decode Distances in Darkness (Continued) Symbol Density/ Bar Code Type Bar Code Content/ ContrastNote 2 15 mil PDF417 80% MRD 20 mil Code 39 123 80% MRD Typical Working Ranges Focus Position Near Far Standard Range 4.7 in 11.94 cm 9.0 in 22.86 cm Document Capture 4.7 in 11.94 cm 14.0 in 35.56 cm Standard Range 2.5 in 6.35 cm 13.0 in 33.02 cm Document Capture 2.8 in 7.11 cm 19.0 in 48.26 cm Notes: 1. Near distances are FOV limited. 2.
3 - 12 Symbol SE6700 Integration Guide
Chapter 4 Electrical Interface Overview The Symbol SE6700 has one 30-pin connector. See Figure 2-1 on page 2-2 for the pin one location, on the side opposite the aiming/illumination system. Symbol SE6700 Table 4-1 lists the pins and signals of the 30-pin connector on the Symbol SE6700.
4-2 Symbol SE6700 Integration Guide Table 4-1 Symbol SE6700 Signal Information (Continued) Pin Number SE6700 Signal Name I/O Notes 20 AIM_EN* I Laser Aiming Control A low turns the AIM laser on. A high turns the AIM laser off.
Electrical Interface Connector Drawings Notes: 1. Material: Housing: 46NYLON UL94V-0 Actuator: PPS UL94V-0 Terminal: phosphor bronze, tin-bismuth 1.0 micrometer minimum, nickel under plating, 1.0 micrometer minimum Fitting nail: phosphor bronze, tin 1.0 micrometer minimum, nickel under plating, 1.0 micrometer minimum 2. Dimensions are in mm. 3. Misalignment of solder tails and fitting nails from Upper direction: 0.05 max., Lower direction: 0.15 max. 4. Apply for even circuit.
4-4 Symbol SE6700 Integration Guide Dimensions are in mm unless otherwise specified. Figure 4-2 SE6700 Engine Interface Connector (30 position, 0.
Electrical Interface Note: Dimensions are in inches.
4-6 Symbol SE6700 Integration Guide
Chapter 5 Application Notes Overview This chapter includes output data information. Output Data Format The sensor image data is read out in a progressive scan. Horizontal blanking and vertical blanking surrounds valid image data as shown in Figure 5-1. LINE_VALID is HIGH during the shaded region. See Output Data Timing for FRAME_VALID timing information. P0,0 P 0,1 P 0,2 .....................................P P1,0 P 1,1 P 1,2 .....................................
5-2 Symbol SE6700 Integration Guide Output Data Timing The sensor’s data output is synchronized with the PCLK output. When LINE_VALID is HIGH, one 8-bit pixel datum is output every PCLK period. .... LINE_VALID .... PCLK Blanking PIX_DATA(7:0) P0 P1 P2 Blanking .... Valid Image Data P3 P4 .... Pn-1 Pn Figure 5-2 Pixel Data Timing Example The rising edges of the PCLK signal are nominally timed to occur on the rising PIX_DATA edges. This allows PCLK to be used as a clock to latch the data.
Glossary A Aperture. The opening in an optical system defined by a lens or baffle that establishes the field of view. API. An interface by means of which one software component communicates with or controls another. Usually used to refer to services provided by one software component to another, usually via software interrupts or function calls Application Programming Interface. See API. ASCII. American Standard Code for Information Interchange.
Glossary - 2 Symbol SE6700 Integration Guide Bits per Second (bps). Bits transmitted or received. bps. See Bits Per Second. Byte. On 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 is used to store one ASCII character. C CDRH. Center for Devices and Radiological Health.
Glossary - 3 D Dead Zone. An area within a scanner's field of view, in which specular reflection may prevent a successful decode. Decode. To recognize a bar code symbology (e.g., UPC/EAN) and then analyze the content of the specific bar code scanned. Decode Algorithm. A decoding scheme that converts pulse widths into data representation of the letters or numbers encoded within a bar code symbol. Depth of Field.
Glossary - 4 Symbol SE6700 Integration Guide IEC (825) Class 1. This is the lowest power IEC laser classification. Conformity is ensured through a software restriction of 120 seconds of laser operation within any 1000 second window and an automatic laser shutdown if the scanner's oscillating mirror fails. Input/Output Ports. I/O ports are primarily dedicated to passing information into or out of the terminal’s memory. Series 9000 mobile computers include Serial and USB ports. Intercharacter Gap.
Glossary - 5 M MIL. 1 mil = 1 thousandth of an inch. Misread (Misdecode). A condition which occurs when the data output of a reader or interface controller does not agree with the data encoded within a bar code symbol. Mobile Computer. In this text, mobile computer refers to the Symbol Series 9000 wireless portable computer. It can be set up to run as a stand-alone device, or it can be set up to communicate with a network, using wireless radio technology. N Nominal.
Glossary - 6 Symbol SE6700 Integration Guide Q Quiet Zone. A clear space, containing no dark marks, which precedes the start character of a bar code symbol and follows the stop character. QWERTY. A standard keyboard commonly used on North American and some European PC keyboards. “QWERTY” refers to the arrangement of keys on the left side of the third row of keys. R RAM. Random Access Memory. Data in RAM can be accessed in random order, and quickly written and read. Reflectance.
Glossary - 7 Substrate. A foundation material on which a substance or image is placed. Symbol. A scannable unit that encodes data within the conventions of a certain symbology, usually including start/stop characters, quiet zones, data characters and check characters. Symbol Aspect Ratio. The ratio of symbol height to symbol width. Symbol Height. The distance between the outside edges of the quiet zones of the first row and the last row. Symbol Length.
Glossary - 8 Symbol SE6700 Integration Guide
Index A aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 ambient light immunity . . . . . . . . . . . . . . . . . . . . . . . . 3-2 anti-reflection coatings . . . . . . . . . . . . . . . . . . . . .2-4, 2-5 application notes . . . . . . . . . . .
Index - 2 Symbol SE6700 Integration Guide I illumination system . . . . . . . . . . . . . . . . . . . . . . . . . . image readout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . installation environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . optical considerations . . . . . . . . . . . . . . . . . . . . . positioning exit window . . . .
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