Bristol 671 User Manual
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Bristol 671 User Manual

Laser wavelength meter
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M
671
ODEL
L
W
M
ASER
AVELENGTH
ETER
4/18/2018
USER'S MANUAL

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Summary of Contents for Bristol 671

  • Page 1 ODEL ASER AVELENGTH ETER 4/18/2018 USER’S MANUAL...
  • Page 2 The information contained in this publication is subject to change without notice.  2018 Bristol Instruments, Inc.

  • Page 3: Table Of Contents

    CONTENTS INTRODUCTION ........................4 Welcome ..........................4 Safety Notices ........................4 General Safety Considerations ..................... 5 Inspection ..........................6 INITIAL INSTRUMENT SETUP .................... 7 General ..........................7 Power Supply Connections ....................7 Signal Output Connections ....................8 Software Installation......................9 LASER INPUT –...

  • Page 4: Introduction

    If you have any questions about the operation of your 671 system, please do not hesitate to call Bristol Instruments at (585) 924-2620. Or, you can contact us at service@bristol-inst.com.

  • Page 5: General Safety Considerations

    (VIS and NIR) or the input aperture (IR and MIR) on the front panel of the model 671. If this instrument is not used as specified, the protection provided by the equipment could be impaired.

  • Page 6: Inspection

    Inspection The 671 Laser Wavelength Meter is packed in a carton designed to give maximum protection during shipment. If the outside of the shipping carton is damaged, notify your shipping department immediately. Your shipping department may want to notify the carrier.

  • Page 7: Initial Instrument Setup

    The Class 2 warning label, shown here, is located next to the fiber-optic input coupler (VIS and NIR) or the input aperture (IR and MIR) on the front panel of the model 671. Place the 671 Laser Wavelength Meter on a firm horizontal surface.

  • Page 8: Signal Output Connections

    Connect the other end of the line-power cord to the power receptacle. Figure 2.1: Back Panel Signal Output Connections The 671 Laser Wavelength Meter has the following connections for signal output and communications. These connections are located on the instrument’s back panel (Figure 2.1).

  • Page 9: Software Installation

    Start Menu (or Application Menu) of the PC. Click on this icon to open the application. Navigate to the “Help” menu and select “Manual” to open a PDF file of the 671 User’s Manual (this file). This User’s Manual will describe installation and operation of the 671 system.

  • Page 10: Laser Input - Vis And Nir Versions

    The Class 2 warning label, shown here, is located next to the fiber-optic input coupler (VIS and NIR) or the input aperture (IR and MIR) on the front panel of the model 671. Never inspect or clean a fiber-optic cable without first disconnecting the entire cable assembly from the optical source.

  • Page 11: Free-Beam Laser Input

    Model 671 User’s Manual LASER INPUT – VIS AND NIR VERSIONS Ensure that all fiber-optic connectors are clean and dry. The 671 system is shipped with a fiber cleaning kit consisting of a package of connector cleaning sticks, clean wipes, and fiber-optic splice & connector cleaner spray. See Appendix G for cleaning instructions.
  • Page 12 If the laser under test has a free space beam, it must be launched into a fiber-optic patchcord for entry into the 671 Laser Wavelength Meter. The LC-1 Fiber-Optic Input Coupler offered by Bristol Instruments is a convenient method of doing this.

  • Page 13: Laser Input - Ir And Mir Versions

    LASER INPUT – IR AND MIR VERSIONS Installation of Adjustment Feet The IR and MIR versions of the 671 Laser Wavelength Meter are supplied with three leg/feet assemblies (Figure 4.1) that are used to precisely align the instrument’s Michelson interferometer to the laser under test.

  • Page 14: Alignment Of Laser Under Test

    Maximum safe input is 10 mW of optical power. Laser input power in excess of 10 mW can result in damage to the instrument. The laser under test enters the IR and MIR versions of the 671 system through an input aperture on the front panel of the instrument (Figure 4.2).
  • Page 15 With appropriate mirrors, adjust the laser under test to be parallel to the optical table at a height of approximately 5 ½ inches (140 mm). Total travel of the 671 adjustment feet is ½ inch (13 mm). It is not advisable to have the instrument too close to the top of the adjustment range.

  • Page 16: Using The Laser Wavelength Meter

    USING THE LASER WAVELENGTH METER Operation Instructions Turn on the power switch of the 671 Laser Wavelength Meter located on the back panel of the instrument. Make sure the supplied USB cable is connected to the USB connector on the back panel of the 671 system and to a USB port on the PC.

  • Page 17: Wavelength Screen

    Model 671 User’s Manual USING THE LASER WAVELENGTH METER Wavelength Screen The Wavelength Screen of the NuView software displays the absolute wavelength, wavenumber, or frequency of the laser under test. Once the application is connected to the instrument, the Wavelength display will update continuously until the connection is terminated.

  • Page 18: Trend Screen

    Model 671 User’s Manual USING THE LASER WAVELENGTH METER Intensity Meter Graphically displays the relative intensity of the laser under test. Status Bar The Status bar is located at the bottom of the Wavelength Screen and the Trend Screen. It provides information about the current state of the instrument as described below (from left to right).
  • Page 19 Model 671 User’s Manual USING THE LASER WAVELENGTH METER Measure/Pause Selecting the Measure button (left) initiates data collection. After the Measure button is selected, it changes its appearance to the Pause button (middle). The Trend Graph and Data Table are updated continuously until the Pause button is selected.

  • Page 20: Menu Function Descriptions

    Model 671 User’s Manual USING THE LASER WAVELENGTH METER Trend Graph Zoom The Trend Graph can be magnified to focus on a portion of the trending data. Before zooming, left-click on the Trend Graph to ensure that the Trend Graph is active, and uncheck “Autoscale Axes”...
  • Page 21 Model 671 User’s Manual USING THE LASER WAVELENGTH METER • Instrument Status – A hexadecimal number corresponding to the instrument status at each measurement. The status numbers are defined in Appendix F. • Max Peak Wavelength – The absolute wavelength, wavenumber, or frequency of the laser under test.
  • Page 22 Model 671 User’s Manual USING THE LASER WAVELENGTH METER • Stop Data Logging – Stops the current logging operation. Note that if you started logging using the “Stop after measurements” or “Stop after hours, minutes, seconds” options, logging will stop automatically and you do not need to click on Stop Data Logging unless you wish to abort early.
  • Page 23 NOTE: In other scientific publications, the units of nanometers, micrometers, and wavenumbers may refer to the values in an air, standard air, or vacuum environment. The 671 Laser Wavelength Meter provides measurements as values in a vacuum environment, and units that are dependent on environment are given a “-vac”...
  • Page 24 Instrument Menu • Connect – The 671 system can be connected to a PC by either USB 2.0 interface or over an Ethernet network. Select Model 671 from the drop-down menu. Click on Connect and choose between “Connect via USB” or “Connect over the network.”...
  • Page 25 Disconnect – Used to disconnect the 671 system from the PC. • Set IP Address – Manually change the IP address for the 671 system using the keyboard. Once the IP address is changed, click OK, and power cycle the 671 system to complete the change.
  • Page 26 Help Menu • About NuView - Displays the NuView software version, the embedded software versions, and information about the 671 system. • Check for Updates – Contacts the NuView software server to check for software updates. The NuView software will prompt the user to check for software updates when the NuView software is opened the second time, and the user is given the option to have the NuView software automatically check for updates weekly.
  • Page 27 NuView software is up to date. • User’s Manuals – Opens a dialog box with a list of all available User’s Manuals. Clicking an instrument hyperlink starts downloading the latest version of the User’s Manual from Bristol Instruments’ website. Bristol Instruments, Inc.

  • Page 28: Remote Communications

    The web-based display application allows remote connection to the 671 Laser Wavelength Meter to easily provide a portable wavelength display. A 671 system with a wired connection to a network can be accessed by any computer, tablet, or smart phone connected to the same network.
  • Page 29 REMOTE COMMUNICATIONS Figure 6.1: Web-Based Display Application The display application shows the real-time wavelength and power measurements from the connected 671 system. The display application also offers customizable settings for displaying the measurement. • Averaging – This function automatically calculates a running average of as many as 128 measurements.
  • Page 30 Model 671 User’s Manual REMOTE COMMUNICATIONS • Settings – Allows the user to select the measurement units for the wavelength display and power display. The Settings screen also displays relevant information about the web-based display application and embedded software versions.

  • Page 31: Direct Communication

    The 671 Laser Wavelength Meter is a Telnet server, using the default Telnet port 23. • Cabling – The Ethernet port of the model 671 can be connected to the network hub or switch using a straight-through CAT-5 Ethernet cable since regular ports (non- uplink) on all hubs and switches are already crossed-over by default.
  • Page 32 Click on Start/Programs/Accessories/Command Prompt, or type “cmd” into the Search bar. To start a Telnet session, type “Telnet” at the command prompt followed by the 671 system’s IP address displayed in the Instrument Menu of the NuView software. C:\>Telnet 192.168.1.109...

  • Page 33: Scpi Communications Scheme

    REMOTE COMMUNICATIONS SCPI Communications Scheme This section describes the communication scheme of the 671 Laser Wavelength Meter. It follows the Standard Commands for Programmable Instruments (SCPI) Syntax and Style Guidelines. The following table provides a summary of commands by subsystem. “[…]”...
  • Page 34 The *IDN (identification number) query returns a string value which contains the instrument type, serial number, and firmware version. The third value is the instrument serial number. The last value is the imbedded software version. Query Response BRISTOL WAVELENGTH METER, 671, 1135, 1.03 Bristol Instruments, Inc.
  • Page 35 Model 671 User’s Manual REMOTE COMMUNICATIONS *OPC? Description The *OPC (operation complete) query returns OFF when all pending device operations are complete, ON if an operation is pending. Query Response {OFF | ON} *RCL Description The *RCL (recall) command restores instrument settings.
  • Page 36 Model 671 User’s Manual REMOTE COMMUNICATIONS Instrument Status Byte BIT VALUE CONDITION A bit is set in the questionable register (see STATus subsystem) Errors are in the error queue (see SYSTem subsystem) A bit is set in the event status register Measurement Instructions The measurement instructions are used to return a reading to the computer.
  • Page 37 Model 671 User’s Manual REMOTE COMMUNICATIONS Measurement Instruction Functions :POWer? Description Returns a power reading in either mW (milliwatts) or dBm as specified by the :UNIT:POWer function. A fixed point value (e.g. –23.4). Query Response Examples :READ:POW? :FETC:POW? :ENVironment? Description Returns the instrument’s internal temperature in degrees Celsius (ºC)
  • Page 38 :DELTa:METHod setting. A numerical value in fixed or scientific notation, depending on the units Query Response (see measurement of power, above). The model 671 returns 9 significant digits for the FREQuency, WAVelength, or WNUMber readings, and the model 671B returns 8.
  • Page 39 Model 671 User’s Manual REMOTE COMMUNICATIONS :DELTa:METHod? Description Queries the state of the :METHod function. Query Response { START | MAXMIN } Examples :CALC:DELT:METH? :DELTa:METHod { STARt | MAXMin } Description Sets the state of the :METHod function to either STARt (to get start - current values) or MAXMin (to get maximum - minimum values).
  • Page 40 Model 671 User’s Manual REMOTE COMMUNICATIONS SENSe Subsystem The SENSe subsystem { XE “Commands:SENSe” } allows changes to how the instrument makes measurements. SENSe Subsystem Functions :AVERage: STATe? Description Queries the state of the averaging status. Query Response { OFF | ON }...
  • Page 41 Model 671 User’s Manual REMOTE COMMUNICATIONS :POWer:OFFSet? Description Queries the power offset being added to power values. The power offset is in units of dB. { OFF | 1 | 2 | 3 | … | 19 | 20 }...
  • Page 42 Model 671 User’s Manual REMOTE COMMUNICATIONS Questionable Status Register BIT VALUE DESCRIPTION The wavelength has already been read for the current scan. The previously requested calibration has failed. The power value is outside the valid range of the instrument. The temperature value is outside the valid range of the instrument.
  • Page 43 Model 671 User’s Manual REMOTE COMMUNICATIONS :QUEStionable:HARDware:CONDition? Description Queries the SCPI Questionable Hardware Condition Register which contains bits that indicate that one or more hardware problems exist. These problems may contribute to invalid or erred measurements. The bits in the register are described in the table below.
  • Page 44 Model 671 User’s Manual REMOTE COMMUNICATIONS SYSTem Subsystem The SYSTem subsystem { XE “Commands:SYSTem” } supplies information and status about the SCPI command parser. SYSTem Subsystem Functions :ERRor? Description Reads error strings from the SCPI Error Queue. If the Error Queue has any entries, the Error Queue bit is set in the Status Byte.
  • Page 45 Model 671 User’s Manual REMOTE COMMUNICATIONS :HELP:HEADers? Description Reads a list of all commands and queries supported by the instrument. Each line of the response is terminated by a linefeed. The first line indicates the number of bytes of help data that follow. The remaining lines are strings of help data.

  • Page 46: Appendix A - Specifications

    VIS / NIR: Collimated beam, 2-3 mm diameter aperture, visible tracer beam to facilitate alignment IR / MIR: High-speed USB and Ethernet interface with Bristol’s Windows-based display program Instrument Interface Browser-based display application Library of commands (SCPI) for custom and LabVIEW programming using any PC operating system COM PU T ER REQUI REM EN T S PC running Windows 7, 8 or 10, 1 GB available RAM, USB 2.0 (or later) port, monitor, pointing device...

  • Page 47: Appendix B - Warranty & Service

    Bristol Instruments. If you have any questions about the operation of your 671 system or need to have your 671 system serviced, please call Bristol Instruments at (585) 924-2620. Or, you can contact us at service@bristol-inst.com.

  • Page 48: Appendix C - Rndis Driver

    RNDIS driver if the computer does not recognize the 671 system. After connecting the 671 system to the PC via USB interface and powering up the 671 system, a successful connection will show up in the device manager under network adapters as “RNDIS/Ethernet Gadget.”...
  • Page 49 Model 671 User’s Manual APPENDIX C – RNDIS DRIVER If the RNDIS driver is not enabled, the device manager will show a yellow exclamation point. In this situation, use the following instructions to enable the RNDIS driver. Right click on “RNDIS/Ethernet Gadget” and choose "Update Driver Software". You will be prompted with the driver selection wizard as shown below.
  • Page 50 Model 671 User’s Manual APPENDIX C – RNDIS DRIVER Select "Browse my computer for driver software" and you will be prompted with the driver selection dialog: Choose "Let me pick from a list of device drivers on my computer" and click “Next.”...
  • Page 51 Model 671 User’s Manual APPENDIX C – RNDIS DRIVER Then select "Microsoft Corporation" as shown below. Then select: "Remote NDIS Compatible Device" as shown below and click “Next”. Bristol Instruments, Inc.
  • Page 52 Model 671 User’s Manual APPENDIX C – RNDIS DRIVER When completed you should see the following dialog indicating the driver is enabled. If you need to connect to a RNDIS device from a virtual machine, it is easier to set-up the RNDIS driver on your "real"...
  • Page 53 Model 671 User’s Manual APPENDIX C – RNDIS DRIVER After connecting the 671 system to the PC via USB interface and powering up the 671 system, a successful connection will show up in the Device Manager (Control Panel>Device Manager) under Network Adapters as “RNDIS/Ethernet Gadget.”...
  • Page 54 APPENDIX C – RNDIS DRIVER Note: this is incorrect for a USB connection only. The RS-422 to USB cable provided by Bristol Instruments appears as a COM device when correctly connected. Use the following instructions to update the RNDIS driver.
  • Page 55 Model 671 User’s Manual APPENDIX C – RNDIS DRIVER If an internet connection is available, select “Search Automatically” to retrieve the latest driver from the internet. If no internet connection is available, select “Browse my computer for driver software”, and locate the RNDIS Driver zip file on the customer CD supplied with the instrument.

  • Page 56: Appendix D - Monitor Port

    APPENDIX D – MONITOR PORT APPENDIX D – MONITOR PORT The Monitor Port on the rear panel of the 671 Laser Wavelength Meter provides a combination of analog and digital signals for observing the interference fringe signals and measurement timing signals using an oscilloscope. The Monitor Port uses a 9-pin, female, D-sub style connector shown in Figure D-1 and with a pinout described in the table below.

  • Page 57: Appendix E - Troubleshooting

    Model 671 User’s Manual APPENDIX E – TROUBLESHOOTING APPENDIX E – TROUBLESHOOTING The 671 Laser Wavelength Meter continually checks the quality of the signal it is analyzing and alerts the user to unusual conditions that might affect the precision of the wavelength measurement.

  • Page 58: Appendix F - Logged Status Messages

    APPENDIX F – LOGGED STATUS MESSAGES APPENDIX F – LOGGED STATUS MESSAGES The 671 Laser Wavelength Meter reports the instrument status at each measurement as a hexadecimal number in the log file. The hexadecimal number corresponds to a set of status messages that are explained in the table below.
  • Page 59 Model 671 User’s Manual APPENDIX F – LOGGED STATUS MESSAGES Hexadecimal Code Status Message Description This indicates that the ambient pressure is outside of the allowed range of 500 to 900 mm Hg, or that there is a problem with the pressure sensor. Measurement...

  • Page 60: Appendix G - Fiber-Optic Cleaning Instructions

    APPENDIX G – FIBER-OPTIC CLEANING INSTRUCTIONS General Information Ensure that all fiber-optic connectors are clean and dry. The 671 Laser Wavelength Meter is shipped with a fiber-optic cleaning kit consisting of a package of connector cleaning sticks, clean wipes, and fiber-optic splice & connector cleaner spray.

  • Page 61: Software Copyright Acknowledgement

    Model 671 User’s Manual SOFTWARE COPYRIGHT ACKNOWLEDGEMENT SOFTWARE COPYRIGHT ACKNOWLEDGEMENT The Model 671 makes use of copyrighted software, the use of which is hereby acknowledged. Font Awesome by Dave Gandy Go-Json-Rest Copyright © 2013-2017 Antoine Imbert The MIT License Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software...

  • Page 62: Declaration Of Conformity

    770 Canning Parkway Victor, NY 14564 USA declares this product: Product Name: Wavelength Meters Model Number(s): 671-VIS, 671-NIR, 671-IR, 671-MIR conforms to the following directives: 73/23/EEC 89/336/EMC as a result of having been tested satisfactorily to the following standards: Safety:...
  • Page 63 Bristol Instruments, Inc. 770 Canning Parkway Victor, NY 14564 Tel: (585) 924-2620 Fax: (585) 924-2623...

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