Operating Manual WA-1100 and WA-1600 Wavemeter 08115-M-00 (Rev. E) Copyright © EXFO Burleigh Products Group Inc. 2002 All Rights Reserved Wavemeter is a registered trademark of Burleigh Instruments, Inc., an EXFO company.
Table of Contents Table of Contents....................................................................................................................................i Assumptions .......................................................................................................................................ii 1. Introduction.......................................................................................................................................1-1 Overview...............................
Accuracy Verification.......................................................................................................................... 4-6 Calibration .......................................................................................................................................... 4-6 Appendix A. Specifications & Labeling ............................................................................................... A-1 Dimensional Drawing ...................................................
WA-1100/WA-1600 Wavemeter Operating Manual 1 Introduction 1. Introduction This section provides general information on the WA-1100/1600 and information on unpacking and setting up the instrument. Overview WA-1100 and WA-1600 Wavemeter systems are instruments designed for simple, automatic and accurate wavelength measurement of continuous wave (CW) laser sources.
WA-1100/WA-1600 Wavemeter Operating Manual 1 Introduction The Monitor port on the back of the instrument provides access to the interferometer fringe signals and timing signals that govern the wavelength measurement. Refer to Appendix D for further information. Safety Considerations This product has been designed, manufactured and tested in accordance with EC Standard EN61010-1, Safety Requirements for Electronic Measuring Apparatus, and has been supplied in a safe condition.
WA-1100/WA-1600 Wavemeter Operating Manual 1 Introduction If the external shipping carton is not damaged, carefully remove and identify all of the components listed below. Contact EXFO or your local representative if any of the components are missing. We recommend you save the shipping carton for future storage or transportation.
WA-1100/WA-1600 Wavemeter Operating Manual 1 Introduction connector. If there is any question of the surface quality on the tip of the cable connector, inspect it under a microscope for scratches or debris. Your instrument may use a Fiber Optic Connector or a Universal Connector. Follow the appropriate procedure below. Some general recommendations: § § § Never use a metal or other hard object for cleaning that would scrape the connector. Do not apply index matching gel or oils.
WA-1100/WA-1600 Wavemeter Operating Manual 1 Introduction Fan Filter Cleaning The fan on the rear panel of the WA-1100/1600 provides important ventilation to components inside the chassis. A filter covers the fan opening to keep out dust. This filter should be cleaned periodically, especially if it becomes noticeably dirty. To clean the dust filter, 08115-M-00 Rev E 1. Pry off the plastic grill covering the filter with a small screwdriver. 2.
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WA-1100/WA-1600 Wavemeter Operating Manual 2 Front Panel Communications 2. Front Panel Communications This section provides information on the front panel controls, describes the display and setup screens and provides instructions on changing screen displays and parameter values. Front Panel Controls The front panel is shown in Figure 2.1. The controls are described in Table 2-1.
WA-1100/WA-1600 Wavemeter Operating Manual 2 Front Panel Communications Using the Front Panel Controls Use the four display area controls to review information and make changes to the available parameters. The headings below provide information on how to perform various procedures using these front panel controls. Change Screens To change which display screen is shown, press display. The Instrument cycles between the display screens. To change which setup screen is shown, press setup.
WA-1100/WA-1600 Wavemeter Operating Manual 2 Front Panel Communications Restore Saved Parameter Values You may want to restore saved parameter values, for example, if you changed the value for a parameter, or several parameters, to observe their effect, but then decide you want to use the initial values. To restore saved values, display the Setup Measurements screen, press select to "highlight" the Restore All field. The saved values are restored.
WA-1100/WA-1600 Wavemeter Operating Manual 2 Front Panel Communications Figure 2-3. Wavelength Screen 1552.5218 nm ∆: 0.0006 Start:1552.5212 Min: 1552.5235 Max: 1552.5200 ∆: 0.0035 Error Message Vac Avg: 8 Gain: Auto Reset 00:03:12 Figure 2-4. Power Screen -11.54 dBm Max: -11.60 ∆: -0.02 Start:-11.52 Min: -11.50 ∆: -0.01 Error Message Vac Avg: 8 Gain: Auto Reset 00:03:12 Table 2-2.
WA-1100/WA-1600 Wavemeter Operating Manual Poffs 2 Front Panel Communications Displays the power offset value applied to subsequent power measurements. The power offset values enable you to obtain accurate power readings when you place an attenuator external to the instrument. If you enter a power offset value equal to the external attenuator, the instrument automatically displays the correct power. This is useful if the signal input power exceeds the maximum allowed input of 10 mW (10 dBm).
WA-1100/WA-1600 Wavemeter Operating Manual 2 Front Panel Communications Status Displays the status codes that indicate the latest exceptions that have occurred. See Appendix C for descriptions and corrective action. Table 2-3. Configuration Information Parameter Description/Options Resolution Identifies the wavelength resolution value. Auto. Permits the instrument to set the resolution based on the calculated bandwidth of the laser. See the description of auto-resolution on page 4-6. .001, .01, 0.
WA-1100/WA-1600 Wavemeter Operating Manual 2 Front Panel Communications Table 2-4. Communications Information Parameter Description/Options Remote When enabled (On) you can use the front panel controls to review parameter values, but can only change (disable) the "Remote" parameter. Attempting to change other parameters when this feature is enabled will display the message "Remote Lockout". (Lockout) Off. Permits changing all front panel controls.
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WA-1100/WA-1600 Wavemeter Operating Manual 3. 3 Remote Communications Remote Communications This section discusses the use of remote communications to review and control the instrument. Overview You can control the instrument remotely using either an RS-232 or a GPIB interface using the SCPI communications scheme. Connections for both interfaces are provided on the back of the instrument as shown later in this section.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications The instrument terminates all of its messages with an EOS character. It never uses the EOS character within a message. Therefore, when the system controller receives an EOS character from the instrument, it can assume that it has received the last character of the message. GPIB Bus Timing = 2000ns or 2µs This sets the minimum time that the system controller will assert the DAV signal after driving a byte onto the bus.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications Measurement Instructions These commands configure and obtain measurements from the instrument. :CONFigure? Queries the measurement subsystem for measurement type. :CONFigure{:POWer | :ENVironment | :WAVelength | :WNUM | :FREQuency} Configures the MEASurement subsystem for power, environment, wavelength, wavenumber or frequency.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications :CALCulate:STARt[:STATe] {ON | OFF} Selects STARt as the quantity to be calculated. This is the first good reading after power-on or last reset. :CALCulate:TIMe[:ELAPsed]? Returns the time since last power on or reset. DISPlay Subsystem These commands change the state of the instrument's front panel. :DISPlay:DIALog? Queries the current display screen on the front of the instrument.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications SENSe:GAIN {AUTO | FIXed} Sets the gain of the instrument’s fringe amplifier. :SENSe:REFerence[:PARameters]? Returns information on the reference laser such as power (% of peak, and minutes to warm-up for WA-1600). STATus Subsystem These commands are used to retrieve SCPI or instrument status.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications SCPI Command Detail This section provides detailed information for all instrument SCPI programming commands. The commands are organized by subsystem. Common Commands *CLS Description The *CLS (clear status) command clears the event status register and the error queue. *ESE? Description Queries the bits in the event status enable register.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications *ESR? Description The *ESR (event status register) query returns a value which encodes the bits in the event status register. If any bits are set in the ESR, then the ESR summary bit will be set in the STB. Query Response Returns an integer which is the sum of all the bit values for those bits that are set. (See Event Status Register table below.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications *RCL Description The *RCL (recall) command restores instrument settings. It is the same as using the Restore All function through the display. *RST Description The *RST (reset) command returns the instrument’s settings to a known state.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications instrument Status Byte Bit Bit Value Condition 5 32 a bit is set in the questionable register (see STATus subsystem) 3 8 errors are in the error queue (see SYSTem subsystem) 2 4 a bit is set in the event status register Measurement Instructions Use the measurement instructions to return a reading to the computer. The four basic measurement instructions are CONFigure, FETCh, READ, and MEASure.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications :CONFigure? Description Queries the current configuration of the measurement subsystem. Query Response {POWER | ENVIRONMENT | WAVELENGTH | WNUMBER | FREQUENCY} Example :CONF? :CONFigure{:POWer | :ENVironment | :WAVelength | :WNUMber | :FREQency} Description Configures the measurement subsystem for subsequent :FETCh?, :MEASure?, or :READ? queries.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications :WAVelength? Description Returns an input laser reading in units of nm. Query Response A numerical value in scientific notation (ex. 1.5461108E+003). The number of significant digits will be determined by the current resolution setting. Resolution is set through the front panel or by using the :DISPlay:RESolution command. Examples :FETC:WAV? :READ:WAV? :WNUMber? Description Returns an input laser reading in units of cm-1.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications The :DELTa, :MAXimum, and :MINimum functions are turned on and off with their respective commands. When one of them is turned on, the others are automatically turned off. CALCulate Subsystem Functions :DATA? {POWer | FREQuency | WAVelength | WNUMber} Description Gets a calculated value of a pre-selected data type.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications :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). *RST value STARt Examples :CALC:DELT:METH STAR :CALC:DELT:METH MAXM :MAXimum[:STATe]? Description Queries the state of the :MAXimum function. Query Response {0 | 1} Where 0 indicates OFF and 1 indicates ON.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications :STARt[:STATe]? Description Queries the state of the :STARt function. Query Response {0 | 1} Where 0 indicates OFF and 1 indicates ON. Examples :CALC:STAR? :CALC:STAR:STAT? :STARt[:STATe] {ON | OFF} Description Sets the state of the :STARt function to either ON or OFF.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications DISPlay Subsystem Functions :DIALog? Description Queries what display dialog is currently on the instrument's front panel display. The return value for this function is invalid if the instrument is on a setup dialog. Query Response {MAIN | WAVELENGTH | POWER} Examples :DISP:DIAL? :DIALog {MAIN | WAVelength | POWer} Description Sets the dialog that is on the instrument's front panel display.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications :UNITs:POWer {DBM | MICRowatts | MILLiwatts} Description Sets the units being used for power values on the front panel display. It is the same as changing the power units through the display. If the units are set to MICRowatts or MILLiwatts, the display may switch to MILLiwatts or MICRowatts due to the display's power auto ranging feature.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications SENSe Subsystem Functions :AVERage? Description Queries the number of readings being averaged for wavelength and power values. Query Response {OFF | 2 | 4 | 8 | 16 | 32 | 64 | 128} Examples :SENS:AVER? :AVERage {OFF | 2 | 4 | 8 | 16 | 32 | 64 | 128} Description Sets the number of readings being averaged for wavelength and power values. It is the same as using the Average function through the display.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications :POWeroffset {OFF | 1 | 2 | 3 | ... | 19 | 20} Description Sets the power offset to be added to power values. The power offsets are in units of dBm. *RST value OFF Examples :SENS:POW OFF :SENS:POW 3 :GAIN? Description Queries the gain state of the instrument's fringe amplifier. Query Response {AUTO | FIXED} Examples :SENS:GAIN? :GAIN {AUTo | FIXed} Description Sets the gain state of the instrument's fringe amplifier.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications STATus Subsystem The STATus subsystem is used to retrieve status information from the instrument and to mask or screen what status is able to be retrieved. Status registers give information about the instrument and the latest measurement. Status enable registers allow some status information to be ignored. Status information disabled though the status enable registers will not show up in the status registers.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications :QUEStionable:ENABle? Description Queries the SCPI Questionable Enable register. Query Response An integer which is the sum of the bit values for all bits in the register that are set. Examples :STAT:QUES:ENAB? :QUEStionable:ENABle Description Used to set and clear bits in the SCPI Questionable Enable register.
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications 10 1024 Fringe counter overflow. 11 2048 Fringe counter invalid. 12 4096 The input laser fringe strength is too high. 13 8192 The reference laser % of peak power is out of range. (WA-1600 only) SYSTem Subsystem The SYSTem subsystem supplies information and status about the SCPI command parser and allows control over the instrument's front panel.
WA-1100/WA-1600 Wavemeter Operating Manual 3 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. All lines of data must be read before continuing normal operations. Query Response # ...
WA-1100/WA-1600 Wavemeter Operating Manual 3 Remote Communications TRIGger Subsystem Functions :ABORt Description Halts acquisition of the current reading and returns the instrument to an idle state. Examples :ABOR :INITiate[:IMMediate] Description Starts the acquisition of a new reading. Examples :INIT :INIT:IMM UNIT Subsystem For the instrument, there is a single query and command in the UNIT subsystem. They query and change the units that the SCPI interface uses for reporting power.
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WA-1100/WA-1600 Wavemeter Operating Manual 4. 4 Theory of Operation & Calibration Theory of Operation & Calibration This section reviews the theory behind wavelength measurement as it applies to the WA1100 and WA-1600 instruments. It also discusses the factors that influence the accuracy of the measurement. Operating Principles A variety of techniques have been devised to determine the wavelength of lasers.
WA-1100/WA-1600 Wavemeter Operating Manual 4 Theory of Operation & Calibration n m λ = é o mù é λ n ù λ o êë úû êë oú û Therefore, the wavelength of the input laser beam is equal to the ratio of the number of fringes recorded for each laser multiplied by a refractive index correction and the wavelength of the reference laser beam.
WA-1100/WA-1600 Wavemeter Operating Manual 4 Theory of Operation & Calibration The temperature and pressure are measured inside the instrument and a correction factor is applied when computing the wavelength. Although humidity is taken into account in the index calculation, its effect is negligible in the infrared. For reference, the error in parts per million (ppm) introduced by errors in the temperature, pressure, or humidity is given approximately by: ∆(nλ/no) = 0.01∆T – 0.
WA-1100/WA-1600 Wavemeter Operating Manual 4 Theory of Operation & Calibration In these figures, the digital logic signals labeled Trigger, Zero Optical Path (ZOP), and Window below each fringe pattern identify the timing and extent of each measurement interval. These 5 volt logic signals can also be observed at the Monitor port. Trigger defines the largest measurement range possible for the particular instrument model.
WA-1100/WA-1600 Wavemeter Operating Manual Laser Spectrum 4 Theory of Operation & Calibration Fringe Signal Broad linewidth Trigger ZOP Window Figure 4-2. Fringe signal and measurement window for a broad linewidth input laser Figure 4-3 shows an example of a bi-modal laser with two strong spectral lines. This laser produces a fringe pattern that exhibits beating between the two laser frequencies.
WA-1100/WA-1600 Wavemeter Operating Manual 4 Theory of Operation & Calibration The WA-1100 and WA-1600 have an Auto-resolution feature that automatically adjusts the precision of the wavelength or frequency measurement according to the laser bandwidth. Insignificant digits after the decimal point are eliminated. If insignificant digits occur ahead of the decimal point they are replaced by the “x” character on the display.
WA-1100/WA-1600 Wavemeter Operating Manual Appendix A Specifications and Labeling Appendix A. Specifications & Labeling This Appendix provides specifications, dimensional drawings and labeling information. Table A-1. Specifications WA-1100 WA-1600 Accuracy ±1 ppm (± 1.5 pm @ 1550 nm) ±0.2 ppm (± 0.30 pm @ 1550 nm) Resolution (Display) 0.001 nm 0.0001 nm Input Sensitivity -30 dBm (1µW) 1200 - 1700 nm, -20 dBm below 1200 nm Max Input Power 10 dBm (10 mW) Optical Power Measurement Accuracy ±0.
WA-1100/WA-1600 Wavemeter Operating Manual Appendix A Specifications and Labeling Dimensional Drawing Figure A-1. Dimensions Rack Mounting Option The WA-1100/1600 can be mounted in a standard 19" electronics rack by attaching the rack mounting brackets as shown below. When the WA-1100/1600 is mounted in an enclosed rack, be careful not to block the fan on the rear panel and provide adequate ventilation inside the rack to prevent overheating.
WA-1100/WA-1600 Wavemeter Operating Manual Appendix B Warranty & Service Appendix B. Warranty & Service Warranty The WA-1100 and WA-1600 are warranted against defects in material and workmanship for a period of one year after date of delivery. Optical components are warranted for 90 days. During the warranty period, EXFO will repair, or at its option, replace parts that prove to be defective when the instrument is returned prepaid to EXFO.
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WA-1100/WA-1600 Wavemeter Operating Manual Appendix C Error & Status Messages Appendix C. Error & Status Messages The instrument continually checks the quality of the signal it is analyzing and reports messages for any unusual conditions that might affect the precision of the measurement. There are two types of messages. In most cases, Error Messages will prevent data from being reported. These are displayed in the Display Screens.
WA-1100/WA-1600 Wavemeter Operating Manual Appendix C Error & Status Messages Error Messages In the following table, the error messages are described with a cross-reference to the status screen reference code. The error messages are shown in order of how there would appear if there were multiple errors. Table C-1.
WA-1100/WA-1600 Wavemeter Operating Manual Appendix C Error & Status Messages Status Messages The following table describes the complete set of status messages that can appear in the status screen. The messages are listed in numerical order. Table C-2. Status Messages Status Message Description Solution Load default settings Indicates the original calibration and set-up data has been corrupted and default values will be used. 00000001 WA-1600 only, reference laser is not stabilized.
WA-1100/WA-1600 Wavemeter Operating Manual Appendix C Error & Status Messages 00002000 Temperature reading is out of range; range is 1°C to 50°C. A temperature reading of 0°C usually indicates the temperature sensor is not connected or has a broken wire. If the problem persists contact EXFO Service. 00004000 Input Laser Power error, power is out of range Check that the laser is operating within the specified power range. If no wavelength is indicated, then 1550 nm is assumed in the power calculation.
WA-1100 & WA-1600 Wavemeter Operating Manual Appendix D Rear Panel Controls Appendix D. Rear Panel Controls GPIB Port The instrument has a GPIB communications port on the back panel as shown in Figure D-1. The GPIB port uses the standard IEEE-488 connector, with the pinout described in Table D-1. Figure D-1. GPIB Interface Connector Table D-1.
WA-1100 & WA-1600 Wavemeter Operating Manual Appendix D Rear Panel Controls RS-232 Serial Interface Connector The RS-232 port is a 9-pin, female, D-sub style connector, with the pinout described in Table 3-1. The connector housing provides connection to the earth ground inside the instrument. The pin configuration complements that of the PC/AT. To connect the instrument to a PC/AT, use a serial extension cable with 1:1 pin correlation.
WA-1100 & WA-1600 Wavemeter Operating Manual Appendix D Rear Panel Controls Signal Monitor Connector The Signal Monitor connector on the back panel of the instrument provides a combination of analog and digital signals for observing the fringe signals and measurement timing signals using an oscilloscope. The signals have the characteristics described in Table D-1. The Signal Monitor output is a 15-pin, female, D-sub style connector shown in Figure D1 and with the pinout described in Table D-2.
WA-1100 & WA-1600 Wavemeter Operating Manual Appendix D Rear Panel Controls Table D-4. Monitor Pinout Pin Number Signal Name Signal Type Description 1 INPUT Analog Input laser sinusoidal fringe signal. 2 REFERENCE Analog Reference laser sinusoidal fringe signal. 3 VREF TTL Valid reference laser fringe amplitude. 4 ZOP1 Raw 5 TRIGGER TTL Scanning Window Trigger is a digital pulse with a duration that defines the maximum measurement interval for the interferometer scan.
WA-1100 & WA-1600 Wavemeter Operating Manual lndex Index A accuracy, 4-2 Address of GPIB port, 2-6 Auto gain, 2-4, 2-5 resolution, 2-5 Average, 2-4, 2-5 Avg, 2-4 B Baud, 2-6 Brightness, 2-6 C change display information, 2-2 Cleaning Fan Filter, 1-4 Fiber End, 1-3 Cleaning a Fiber Optic Connector, 1-3 Cleaning a Universal Connector, 1-3 Cleaning, fiber end, 1-3 Commands CALCulate, 3-10 DISPlay, 3-12 Measurement, 3-8 SENSe, 3-14 STATus, 3-16 SYSTem, 3-18 TRIGger, 3-19 UNIT, 3-20 Communications setup scre
Index WA-1100 & WA-1600 Wavemeter Operating Manual SCPI, 3-1 screens display, 2-3 setup, 2-5 SELECT Button, 2-1 service, B-1 set up instrument, 1-2 SETUP Button, 2-1 Setup screens, 2-5 signal GPIB, D-1 monitor, D-2 RS-232, D-2 specifications, A-1 standard air, 2-4 Status screen, 2-5 II U units.
Declaration of Conformity Manufacturer’s Name: EXFO Burleigh Products Group Inc. Manufacturer’s Address: 7647 Main St.
EXFO Burleigh Products Group Inc. 7647 Main Street Fishers Victor, NY 14564-8909 Tel. (585) 924-9355 Fax.
