ARCoptix ANIR Fourier Transform Spectrometer An ARCoptix Product Installation and Operation Manual Document Number ARC-00000-000-02-0310 Offices: Ocean Optics, Inc. World Headquarters 830 Douglas Ave., Dunedin, FL, USA 34698 Phone 727.733.2447 Fax 727.733.3962 8 a.m.– 8 p.m. (Mon-Thu), 8 a.m.– 6 p.m. (Fri) EST E-mail: Info@OceanOptics.com (General sales inquiries) Orders@OceanOptics.com (Questions about orders) TechSupport@OceanOptics.
Ocean Optics offers the most comprehensive, innovative and high-quality line of modular spectroscopy tools in the world. We have partnered with ARCoptix (www.arcoptix.com) to offer their ARCoptix ANIR FTS spectrometer to work with our SpectraSuite Spectrometer Operating Software. We invite you to contact us at Ocean Optics, Inc. (see front cover for contact information) or ARCoptix S.A. with any technical questions, comments, or applications inquiries.
Table of Contents About This Manual .............................................................................................................iii Document Purpose and Intended Audience.............................................................................. iii Document Summary.................................................................................................................. iii Product-Related Documentation .............................................................................
About This Manual Appendix A: How the ARCoptix ANIR Works .................................. 23 Overview ..................................................................................................................................23 Principle of Operation ..............................................................................................................23 Reference Laser ......................................................................................................................
About This Manual Document Purpose and Intended Audience This document provides the user of ARCoptix ANIR Series FTS Spectrometers with instructions for setting up, and performing experiments with their spectrometer. Document Summary Chapter Description Chapter 1: Introduction Contains descriptive information about the ARCoptix Spectrometer and how sampling works. It also provides a list of system requirements, interface options, and shipment components.
About This Manual Occasionally, you may find that you need to make a change or an upgrade to your system. To facilitate these changes, you must first contact Customer Support to obtain a Return Merchandise Authorization. Please contact Ocean Optics for specific instructions when returning a product. Warranty This product is covered by a limited 1-year warranty that starts 30 days after purchasing hteh spectrometer.
About This Manual Place of Service Seller shall use its best efforts to assist buyer to resolve all warranty related issues through Ocean Optics technical support as soon as reasonably practicable after notification by the Buyer of a possible defect. However, the Seller reserves the right to require the Buyer return the Product to Seller’s production facility, transportation charges prepaid, when necessary, to provide proper warranty service.
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Chapter 1 Introduction Overview The heart of an ARCoptix ANIR FTS Spectrometer is an interferometer module that contains a micromechanical device, actuation and driving electronics. Additionally there is a laser based feedback system to control the motion of the micromechanical device. Dedicated optical components bring the light onto the surface of the interferometer mirrors, as well as fibers for in-coupling and outcoupling of light.
1: Introduction Thanks to micromechanics technology and to the LGI concept, this instrument could have been made compact enough to be portable and, because of the principle, easily upgradeable to any much larger wavelength ranges. The limitation in wavelength range is not due to the concept, but due to the photodetector that is used. In the standard model the detection of the interferogram is carried with one single InGaAs photodiode.
1: Introduction Figure 1-2 Figure 1- 2 shows the principle of operation of a LGI. Incoming light is reflected back by a series of fixed and mobile mirrors acting as a grating and generating a diffraction pattern. To obtain the interferogram one records the modulation of the zero order in function of the motion of the mobile mirrors. The path difference (or depth of the grating) x is an important parameter and given by the distance between the fixed and the mobile mirrors.
1: Introduction Models Available The following ARCoptix ANIR spectrometer models are available form Ocean Optics: ANIR 0.9-1.7 ANIR 0.9-2.6 ANIR 2.0-4.5 Spectral Range 900-1700 nm 900-2600 2000-4500 Signal to Noise >1:1000 >1:1000 >1:1000 Detector Type InGaAs InGaAs MCT Items Included with Shipment Important information and documentation accompany your ARCoptix NIR spectrometer shipment.
Chapter 2 Installing the Spectrometer Overview You must install the SpectraSuite spectrometer operating software application prior to connecting the ARCoptix ANIR spectrometer to the PC. The ARCoptix spectrometer operating software installs the drivers required for Windows to communicate with the ARCoptix ANIR. If you do not install the software first, the system will not properly recognize the ARCoptix ANIR.
2: Installing the Spectrometer ARCoptix Software Installation The ARCoptix spectrometer can only be controlled via ARCoptix’s proprietary driver. Thus, a compatibility layer (SpectraSuiteHub.msi) is necessary to allow SpectraSuite communicate with this driver. You can install the SpectraSuite-Hub on any 32-bit Windows computer. Typically you will install it on the same computer on which SpectraSuite was installed, but this is not a requirement.
2: Installing the Spectrometer 3. Follow the prompts for the SpectraSuiteHub Setup Wizard. 4. When requested by the wizard, connect the spectrometer to the computer’s USB port using the supplied USB cable. See Hardware Installation for more information. 5. Click Finish on the SpectraSuiteHub Setup Wizard. 6. The ARCspectro ANIR Setup Wizard appears.
2: Installing the Spectrometer 7. The Select Installation Folder screen appears. Choose the installation directory and press Next. 8. Verify the information and press Next to start the installation.
2: Installing the Spectrometer 9. The installer will install the necessary files for the software.
2: Installing the Spectrometer 10. The device drivers installation will then start automatically. Disconnect the spectrometer if is connected to the computer and press OK. 11. When Window’s Device Driver Installation Wizard window appears, press the Next Button. 12. If the installer informs you that the drivers have not passed the Windows logo, please ignore the message and press Continue Anyway.
2: Installing the Spectrometer 13. When the drivers are installed, press Finish. 14. This completes the installation of the Arcspectro ANIR. Press Close to connect the Instrument.
2: Installing the Spectrometer 15. Now you need to connect the device to your USB 2.0 port. The following window will appear automatically. Select “Install the software automatically (Recommended)” and press the Next button. 16. If the installer informs you that the drivers have not passed the Windows logo, please ignore the message and press Continue Anyway.
2: Installing the Spectrometer 17. The device is now ready to be used. Press Finish. Modifying Windows Firewall Settings If you installed the SpectraSuite-Hub on a remote computer (i.e., any computer other than the one on which SpectraSuite was installed), Windows Firewall settings must be modified to allow SpectraSuite to access the SpectraSuite-Hub. Normally the install script will do this automatically.
2: Installing the Spectrometer Hardware Installation Before use the spectrometer must be installed in a measurement setup with the other devices. In addition to the spectrometer (connected to a computer running SpectraSuite) you need the following components: 2 fiber optic cables Sample holder or probes Fiber-coupled lamp (Halogen, preferably 20 W) The figure below shows a typical transmission set-up. Yours may differ depending on what you are measuring and the type of measurement being taken.
Chapter 3 Using the Spectrometer Overview Once you have installed the proper software and connected the spectrometer to the desired hardware, you are ready to take measurements. This chapter provides information on running the SpectraSuiteHub service and starting SpectraSuite when using an ARCoptix ANIR spectrometer. SpectraSuite functions specific to the ARCoptix ANIR spectrometer are also discussed.
3: Using the Spectrometer If you are running on Vista, read the section below on how to start the Controller utility. Otherwise, to start this utility, double-click on the desktop icon labeled SpectraSuite Hub Controller. There is also an item in the Start Menu within the SpectraSuiteHub folder labeled Shortcut to SpectraSuiteHubLocator.exe. You can click the “Check Status” button to verify that the SpectraSuite-Hub has been installed and is started.
4: Troubleshooting 4. Enter the IP address and port number of the ARCoptix ANIR spectrometer. You can determine the IP address and port number by running the SpectraSuite-Hub Controller utility on the computer attached to the ARCoptix ANIR spectrometer. See Starting the SpectraSuite-Hub Controller Utility on Vista for information on how to obtain these numbers. When finished, click Next.
3: Using the Spectrometer 5. Highlight the serial number of the spectrometer you wish to view. Then, click Next. 6. Click Finish. The icon for the ARCoptix ANIR spectrometer now appears in the Data Sources pane. 7. Right-click on the ARCoptix ANIR icon and choose Spectrum Graph. Note The ARCoptix ANIR spectrometer requires several seconds to acquire each spectrum. Gain Setting The ARCoptix ANIR spectrometer does not use an integration time setting to control its operation.
Chapter 4 Troubleshooting Overview The ARCoptix ANIR Spectrometer is an instrument that is designed for use in a laboratory or field application with a minimum amount of maintenance. Since it is normally used with a source and cuvette holder, we describe the maintenance and troubleshooting with respect to the entire system.
4: Troubleshooting As an example, if you change the supplier of a solvent, verify that the change has no effect on the analysis. Run a standard (or a series of standards) on a periodic basis to verify that the system is performing properly. When abnormal data is obtained, collect the spectrum of a standard and compare the spectrum to one that was previously obtained. If an error message is presented, press the Continue button indicated on the Error Message dialog box.
4: Troubleshooting No Signal Possible Cause Comment Suggested Solution USB cable is loose Check cables for good contact Light not on Check light Sample not appropriate Use a different sample Transient internal spectrometer fault Remove USB cable and re-insert Defect in Spectrometer Contact Ocean Optics Signal Intensity is Not Constant Possible Cause Comment Fiber optic cable has shifted in position Lamp is not stable Suggested Solution Tape fiber optic cable to bench Defective lamp Replac
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Appendix A How the ARCoptix ANIR Works Overview The ARCoptix ANIR is a miniaturized Fourier Transform Spectrometer (FTS). It is based on the principle named “Lamellar Grating Interferometer” (LGI). The active part of the LGI is driven by a micrommechanical System. A Fourier Transform Spectrometer (FTS) has distinct advantages compared to grating spectrometer in terms of throughput and Signal-to-Noise Ratio (SNR). The principle of the LGI was invented by Strong [J. Strong, and G. A.
A: How the ARCoptix ANIR Works Figure A-1 shows incoming light is reflected back by a series of fixed and mobile mirrors acting as a grating and generating a diffraction pattern. To obtain the interferogram one records the modulation of the zero order in function of the motion of the mobile mirrors. The path difference (or depth of the grating) x is an important parameter and given by the distance between the fixed and the mobile mirrors.
A: How the ARCoptix ANIR Works The intensity is thus modulated and changes with a cosine function of the grating depths x. The period is given by the wavelengths. If the lamellar grating is illuminated with a source containing several wavelengths of intensities A(), then the interferogram is the integral over all wavelengths . I(x) A cos 2 x d Eq.
A: How the ARCoptix ANIR Works Noise The last aspect treated in this chapter is related to the effect of noise in Fourier transform spectroscopy. The interferogram signal is always accompanied by statistical errors and we want to know their effect on the spectrum. Several types of noise and their origins will be presented in this section. Signal-to-noise ratio We define the Signal-to-Noise ratio (SNR) of a set of measurements as the ratio between the mean value of the signals and their standard deviation.
Appendix B Specifications Specification Value Resolution: 8 cm-1 500nm 0.5 nm 1000 nm 1.5 nm 1700 nm 4 nm 2600 nm 9 nm Wavelengths accuracy <0.5 nm A/D converter 24 bit Fiber optical connector SMA 905 Optical fiber entrance 0.6 mm (Fiber core diameter) Minimum scan time 0.5 s Effective measurement time <5 s (CPU dependent) Operating voltage 5 V (USB powered) Operating temperature 10° - 30°C Communication interface UBS 2.
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