Operator’s Manual Coherent StingRay Diode Laser Products
Operator’s Manual Coherent StingRay Diode Laser Products 27650 SW 95th Ave.
Coherent StingRay Operator’s Manual This document is copyrighted with all rights reserved. Under the copyright laws, this document may not be copied in whole or in part or reproduced in any other media without the express written permission of Coherent, Inc. Permitted copies must carry the same proprietary and copyright notices as were affixed to the original.
Table of Contents TABLE OF CONTENTS Preface .................................................................................................................................. vi Export Control Laws Compliance ........................................................................................ vi Signal Words and Symbols in this Manual .......................................................................... vii Signal Words...............................................................................
Coherent StingRay Operator’s Manual Back Panel .......................................................................................................................... 4-4 Laser Head Connector ............................................................................................... 4-4 Power In Connector ................................................................................................... 4-4 BNC Connector.................................................................................
Table of Contents LIST OF TABLES 1-1. Possible CDRH and IEC Classifications for Coherent StingRay Lasers......................... 1-4 2-2. 2-3. 2-4. 2-5. Pin Out Table ................................................................................................................... 2-2 LED Indicator and Analog Output Status........................................................................ 2-3 Modulation Characteristics and States....................................................................
Coherent StingRay Operator’s Manual Preface This manual contains user information for Coherent StingRay Diode Laser. Your Coherent StingRay structured light-generating laser features high quality glass optics that provides uniform intensity distribution laser light and a rugged housing to maximize the reliability of the laser. For insured longer lifetime, each diode laser has undergone a burn-in period and a final quality control check before shipment.
Preface Signal Words and Symbols in this Manual This documentation may contain sections in which particular hazards are defined or special attention is drawn to particular conditions. These sections are indicated with signal words in accordance with ANSI Z-535.6 and safety symbols (pictorial hazard alerts) in accordance with ANSI Z-535.3 and ISO 7010. Signal Words Four signal words are used in this documentation: DANGER, WARNING, CAUTION and NOTICE.
Coherent StingRay Operator’s Manual Symbols The signal words DANGER, WARNING, and CAUTION are always emphasized with a safety symbol that indicates a special hazard, regardless of the hazard level: This symbol is intended to alert the operator to the presence of important operating and maintenance instructions. This symbol is intended to alert the operator to the danger of exposure to hazardous visible and invisible laser radiation.
Preface Incoming Inspection Immediately upon receipt of your product, examine the packaging material and contents for shipment damage. Report any such instance to your receiving department or shipping company. Your shipment should contain the items shown below. (1) Coherent StingRay laser (1) USB flash drive and (1) Allen key (1) Laser Safety and Installation Quick Start Guide (1223125) (1) Final QC report Installing the Coherent Connection Software To install the software (P/N 1255080): 1.
Coherent StingRay Operator’s Manual 4. Follow the on-screen instructions. The Coherent Connection software is an optional interface that, if enabled, can be used to communicate with the RS-232 feature of the laser. This software is not required to interface and communicate with the laser—any serial communication interface can be used. See “Section Five: Host Interface” (p.
Laser Safety SECTION ONE: LASER SAFETY In this section: • Protecting devices (this page) • Laser safety and classification (p. 1-3) • Declaration of conformity (p. 1-8) DANGER! The laser light emitted by this laser may be in the infrared area of the electromagnetic spectrum and may not be visible to the human eye. Use extreme caution at all times when using the laser. DANGER! The output power of this laser is high enough to cause permanent damage to the human eye.
Coherent StingRay Operator’s Manual Cap The cap serves to protect the laser during storage or inactivity. To use the cap, slide it onto the laser face. Do not use the cap to block laser light because the heated material could contaminate the optical Cap protecting the optical head components. Laser Controller with Safety Interlock for Class IIIb Lasers To be used as standalone units, Class IIIb lasers require the installation of a safety mechanism that prevents exposure to the laser light.
Laser Safety The laser controller is a multi-functional interface which provide feedback, status, and control of the laser, in addition to the safety features, to comply with end-use applications. The controller also provides interface to the laser for remote connection of power, modulation, and communication. Features include: 1. Power to the Laser 2. Modulation to the laser via the BNC connector 3. USB interface to the laser for communication and parameter setting 4.
Coherent StingRay Operator’s Manual 200 mm CDRH, 70 or 100 mm IEC Sensor Laser Source 7 mm aperture Figure 1-2. Setup for CDRH and IEC Classification Table 1-1. Possible CDRH and IEC Classifications for Coherent StingRay Lasers Organization Class CDRH II 400 to 710 nm 1 mW 200 mm IIIa 400 to 710 nm 5 mW 200 mm 400 to 710 nm 500 mW 200 mm or > 710 nm 500 mW 200 mm 1 500 to 700 nm 0.39 mW 70 mm 1M 500 to 700 nm 0.
Laser Safety CDRH Class IIIa and IEC Class 1M, Class 2M, and Class 3R Considered eye-safe with caution, but may present an eye hazard if viewed using collecting optics (magnifiers, binoculars, etc.). Focusing of this light into the eye could cause eye damage. CDRH Class IIIb and IEC Class 3B Considered dangerous to your retina if exposed, including exposure when looking directly into a reflection from a specular (mirror-like) surface.
Coherent StingRay Operator’s Manual CDRH Classification Our lasers can comply with CDRH classification and fall in different safety classes, depending on output power, wavelength, and fan angle. Statement indicating that laser radiation is emitted from the aperture. Warning statement follows.
Laser Safety Classification Requirements Classification is obtained once the laser meets the criteria established by the CDRH or the IEC. Lasers are always classified in a safety class (CDRH Class II, IIIa, IIIb, and IEC Class 1, 1M, 2, 2M, 3R, 3B). Lasers do not need to be fully compliant unless the end-user requires it to be so. If required, make sure to mention it when ordering. CDRH Requirements Class II and IIIa 1. Laser radiation emission indicator (LED lights up when laser is powered) 2.
Coherent StingRay Operator’s Manual IEC Requirements Class 1, 1M, 2, and 2M 1. Warning/ID/aperture label affixed (sticker on the laser with all the required information – see above) 2. Instruction manual Class 3R 1. All items mentioned for Class 1, 1M, 2, and 2M lasers 2. Laser radiation emission indicator (LED turning on when laser is powered) for lasers > 700 nm 3. A permanently attached beam attenuator (a shutter or switch) Class 3B 1. All items mentioned for Class 3R lasers 2.
Laser Operation SECTION TWO: LASER OPERATION In this section: • Power requirements (p. 2-2) • Turning the laser ON (p. 2-2) • Turning the laser OFF (p. 2-4) • Lasers with a controller (p. 2-4) • Modulating the laser (p. 2-4) • Operating environment (p. 2-6) • Installing a mounting bracket (p. 2-7) • Coherent StingRay and RS-232 (p. 2-8) DANGER! The laser light emitted by this laser may be in the infrared area of the electromagnetic spectrum.
Coherent StingRay Operator’s Manual Power Requirements The Coherent StingRay laser utilizes an auto scaling input power feature. The user can apply from 5 to 24 VDC to the system and the laser will regulate this input voltage to the operating requirement. Table 2-2. Pin Out Table Pin Assignment Wire Color 1 Vin Gnd Black 2 Vmod Blue 3 Vmod Gnd Red/Black 4 RS232 Recv Whitea 5 RS232 Gnd White/Blackb 6 RS232 Trans Orangec 9 Vin Red 10 Fault Green a.
Laser Operation WARNING! Use extreme caution at all times when laser is in use. WARNING! Do not place any flammable objects directly in front of the free, non-extended beam (without the line generating optics), especially with higher power beams. Once the laser is properly connected to the power supply, turn the power supply ON to operate the laser. The green LED at the back of the laser will light up—refer to Table 2-3 (p. 2-3). Table 2-3.
Coherent StingRay Operator’s Manual Turning the Laser OFF To turn the laser off: • Disconnect the power supply from its source. • Disconnect the power supply from the laser. Lasers with a Controller The input voltage for a controller is 12 VDC. For more information, refer to “Laser Controller with Safety Interlock for Class IIIb Lasers” (p. 1-2). Modulating the Laser The standard laser runs in Continuous Wave mode; however, lasers can have two power adjustment options.
Laser Operation Nominal Power Laser Power vs. Analog Modulation 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 Indirect Modulation Direct Modulation 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Vmod [V] Laser Power vs. Digital Modulation 1.2 Nominal Power 1 0.8 Indirect Modulation 0.6 Direct Modulation 0.4 0.2 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Vmod [V] Figure 2-3. Modulation Curves Table 2-4 (p. 2-6) describes the modulation characteristics and states for given applied voltages.
Coherent StingRay Operator’s Manual Table 2-4. Modulation Characteristics and States Modulation Fmax Direct Indirect 0 to 0.5 VDC 4.5 to 5 VDC Analog 500 KHz OFF 0.5 to 5 VDC 0 to 4.
Laser Operation Installing a Mounting Bracket It is important to use a mounting bracket that is specifically designed to handle the heat dissipation requirements of our lasers, especially for those operating above 20 mW. Coherent StingRay lasers contain a built-in temperature monitoring circuit. Should the laser become too hot, the unit is designed to temporarily shut down. Full laser operation will only resume once the laser returns to normal operating temperatures and power is cycled.
Coherent StingRay Operator’s Manual Coherent StingRay and RS-232 RS-232 can be connected directly to the laser via a flying lead or Hirose connector. For a list of RS-232 commands, refer to “Section Five: Host Interface” (p. 5-1). For a complete list of pin outs, refer to Table 2-2 (p. 2-2). Table 2-5. RS-232 Pinouts and Wiring Pin Assignment Wire Color 4 RS232 Recv Whitea 5 RS232 Gnd White/Blackb Pin 4 6 RS232 Trans Orangec Pin 5 Pin 6 Recv Gnd Trans a.
Servicing Your Coherent StingRay Laser SECTION THREE: SERVICING YOUR COHERENT STINGRAY LASER In this section: • Focusing lasers (p. 3-2) • Cleaning the optics (p. 3-2) • Operating hints (p. 3-3) WARNING! Due to our optical design, most of our visible laser products are classified as CDRH Class II and IIIa products. These structured light devices meet this classification only as complete assemblies.
Coherent StingRay Operator’s Manual Each Coherent StingRay laser is a self-contained unit and, as such, the only required service and maintenance procedures are explained in detail later in this section. Focusing Lasers All lasers have been designed so that the focusing lens cannot be removed. If you have a specific application that requires accurate focusing and you would like your laser to be pre-focused using a beam profiler, contact your sales representative or Coherent.
Servicing Your Coherent StingRay Laser • Verify that the optics are not contaminated. If the optics are contaminated, it is best to try and remove visible contamination by blowing dry air across the surface. Make sure the air product is oil- and moisture-free. If this technique fails to remove the contaminants, gently wipe the glass surface with a piece of slightly damp lens tissue.
Coherent StingRay Operator’s Manual (b) A laser mounted at a low angle tends to highlight surface topography and edge characteristics. This has proven to be useful in such applications as semiconductor orientation systems or magazine and newspaper counting systems. As the material moves by, the lines are bent by the edges and a vision system counts the bent line shapes.
Laser Controller SECTION FOUR: LASER CONTROLLER In this section: • Front panel (p. 4-2) • Back panel (p. 4-4) • Specifications (p. 4-5) The Coherent StingRay Controller is a small control box that allows you to connect to—and interface with—a single laser head. Coherent StingRay Controllers are “stackable,” which permits multiple controllers to be set up in a single system.
Coherent StingRay Operator’s Manual Front Panel Indicators and connectors on the Coherent StingRay Controller front panel are shown in the following figure. Status LEDs Keyswitch (showing key in STANDBY position) Interlock Jumper Figure 4-6. Coherent StingRay Controller Front Panel Keyswitch This is a single keyswitch master power control for laser emission supply. Keyswitch Power On LED Indicator The following illustration shows the keyswitch in the STANDBY and the ON positions.
Laser Controller Status LED Indicators There are three Status LEDs on the front panel: • Laser Ready • Laser Fault • Power On The following table lists all the possible states of the controller Status LEDs. Table 4-6.
Coherent StingRay Operator’s Manual Back Panel The back panel of the Coherent StingRay Controller (Figure 4-7, below) has the following connectors: laser head, power in, BNC, and USB. BNC Connector Laser Head Connector USB Connector Power In Connector Figure 4-7. Coherent StingRay Controller Back Panel Laser Head Connector Use this connector to connect the Coherent StingRay laser to the Controller.
Laser Controller USB Connector This Mini-B connector allows you to connect a PC to the Coherent StingRay Controller and issue commands. The commands pass to the laser via RS-232. The controller converts the USB signal to RS-232. Specifications Table 4-7. Coherent StingRay Controller Specifications (Sheet 1 of 2) Parameter Specification Coherent StingRay Controller dimensions 84.5 x 108.5 x 30.
Coherent StingRay Operator’s Manual Table 4-7.
Host Interface SECTION FIVE: HOST INTERFACE In this section: • Host command quick reference (this page) • Message considerations (p. 5-2) • Commands and queries (p. 5-5) • SCPI error codes (p. 5-10) When a command is sent to the Coherent StingRay laser, the parameter for the command is stored in internal persistent memory, which has a logic cell life of 10 thousand cycles. The cell life sets the limits for repetitive commands sent to the Coherent StingRay laser.
Coherent StingRay Operator’s Manual Table 5-1. Host Command Quick Reference (Sheet 2 of 2) Command Description Page No.
Host Interface Message Completion Handshake SCPI message round trip handshaking is implemented on every message sent by the laser head firmware; however, the handshaking may be disabled using an SCPI command. Change of the setting will be saved in non-volatile memory. This handshake serves several purposes: 1. It provides an indication to the host/controller that the message was received 2.
Coherent StingRay Operator’s Manual Message Terminators Messages between the laser head or controller and the host computer are comprised entirely of ASCII string characters; no binary messages are supported. All message strings passing through the host interface are terminated to signal the end of a message string. The maximum message length supported is 255 bytes, which includes all terminating characters.
Host Interface Devices interpret hexadecimal data using the following rules: • Uppercase and lowercase are accepted (“FE” is the same as “fe”) • Leading zeroes are required and accepted (“0A” is the same as “A”) • The data string may optionally be preceded by a “0x” or “0X” C hexadecimal notation idiom (0xD2C4 is the same as D2C4) • Following the optional “0x” prefix, the acceptable characters are from the list: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, A, B, C, D, E, and F Enumerated values
Coherent StingRay Operator’s Manual SYST:COMM:BAUD Serial communication baud rate control command (persistent). Command: SYST:COMM:BAUD Query: SYST:COMM:BAUD? Note: Default = 115200. SYST:COMM:HAND SCPI handshaking control command (persistent). Command: SYST:COMM:HAND {ON|OFF} Query: SYST:COMM:HAND? SYST:COMM:PROM Interactive prompt control command (persistent). Command: SYST:COMM:PROM {ON|OFF} Query: SYST:COMM:PROM? SYST:DIOD:HOUR? Queries laser diode usage hour.
Host Interface SYST:INF:CDAT? Queries factory calibration date. Query: SYST:INF:CDAT? SYST:INF:FVER? Queries firmware version. Query: SYST:INF:FVER? Return: Version in format VX.X.X. SYST:INF:MDAT? Queries manufacture date. Query: SYST:INF:MDAT? SYST:INF:MOD? Queries Coherent laser model. Query: SYST:INF:MOD? Return: “STINGRAY” as default. SYST:INF:PNUM? Queries Coherent part number. Query: SYST:INF:PNUM? SYST:INF:POW? Queries laser power in Watts at maximum calibrated output.
Coherent StingRay Operator’s Manual SYST:INF:WAV? Queries laser wavelength in nanometers. Query: SYST:INF:WAV? SYST:STAT? System status query. Query: SYST:STAT? Return: Bit-coded laser operational status. The following table describes status code bit mapping. Table 5-3.
Host Interface SOUR:POW:LEV? Queries diode operating power in Watts. Query: SOUR:POW:LEV? SOUR:POW:LEV:IMM:AMPL Laser output power control command for CW power mode (persistent). Command: Watts>} SOUR:POW:LEV:IMM:AMPL
Coherent StingRay Operator’s Manual SCPI Error Codes Table 5-4.
Product Repair SECTION SIX: PRODUCT REPAIR Each Coherent StingRay laser has been designed to exhibit proper mechanical and temperature stability. As such, no user-serviceable parts are located inside the laser. Do not attempt to take the assembly apart—this will void the product warranty. NOTICE! Coherent recommends that the shipping box and packing materials be saved after initial purchase, as they will be required should the laser need to be shipped or returned.
Coherent StingRay Operator’s Manual 6-2
Warranty APPENDIX A: WARRANTY Each Coherent StingRay laser has been designed to exhibit proper mechanical and temperature stability. As such, no user-serviceable parts are located inside the laser. Do not attempt to take the assembly apart, as any such action will void the product warranty.
Coherent StingRay Operator’s Manual A-2
Glossary GLOSSARY ANSI American National Standards Institute. An organization that generates the ANSI Z136.1 Standard for the Safe Use of lasers and other safety standards for laser users. Collimation The process by which a divergent beam of radiation is converted to a parallel beam. A diode laser focused at more than about 45 inches is said to be “collimated” for all practical purposes. CCD Acronym for Charged Couple Device.
Coherent StingRay Operator’s Manual Structured Light A term used in Machine Vision applications to describe any light source that projects a known geometric distribution of light. Visible The region of the electromagnetic spectrum which is visible by the human eye. Light in the visible region falls between 400 and 700 nm. Wavelength Electromagnetic energy is transmitted in the form of a sinusoidal wave. The wavelength is the physical distance covered by one cycle of this wave.
Index INDEX C M Cap, protecting device 1-2 Classification Laser 1-3 Laser requirements 1-7 Cleaning Diffraction Gratings 3-3 Optics 3-2 Coherent StingRay and RS-232 2-8 Coherent StingRay laser, servicing 3-1 Commands and queries 5-5 Communication port selection 5-2 Compliance, U.S.
Coherent StingRay Operator’s Manual Index - 2
Coherent StingRay Operator’s Manual ©Coherent Inc., 8/2013(RoHS), printed in the USA Part No. 1223124 Rev.
