Ocean Optics DTS User Manual
DTS
TM
Near Infrared Spectrometers
Operator’s Manual
30 Upton Drive
Wilmington MA 01887
Telephone (978) 284-6000
Fax (978) 284-6060
www.polychromix.com
Document Number 04-91-0201-00 Rev. A
Notices:
This product is covered by a limited warranty. A copy of the warranty is
included in this manual.
Using the equipment in a manner not specified by this manual may impair the
protection provided by the equipment.
Information in this document is subject to change without notice and does not
represent a commitment on the part of Polychromix Inc. No responsibility is
assumed by Polychromix Inc. for the use of this software, hardware or other
rights of third parties resulting from its use.
The software described in this document is furnished under a license
agreement and may be used or copied only in accordance with the terms of
the agreement. The user may make a single copy of the software for archival
purposes.
Polychromix products are covered by the following US patents: 5,757,536;
6,329,738; 6,664,406; 6,724,125. Additional patents pending.
DTSTM, DTS-1700TM, DTS-2500TM, DTS-NBTM and SpectralCodeTM are
trademarks of Polychromix, Inc. Spectralon is a registered trademark of
Labsphere, Inc.
All other brands and products mentioned are trademarks or registered
trademarks of their respective holders.
Copyright, 2005 by Polychromix, Inc. All rights reserved. No part of this
document may be reproduced in any form or by any means, electronic or
mechanical, including photocopying without written permission from
Polychromix, Inc.
Warranty
Polychromix, Inc. (Polychromix or Seller) warrants that its products will be free from
defects in materials and workmanship under normal use and service in general
process conditions for the effective period set out below. This warranty and its
remedies are in lieu of all other warranties expressed or implied, oral or written, either
in fact or by operation of law, statutory or otherwise, including warranties of
merchantability and fitness for a particular purpose, which Polychromix specifically
disclaims. Polychromix shall have no liability for incidental or consequential damages
of any kind arising out of the sale, installation, or use of its products.
Polychromix’s obligation under this warranty shall not arise until Buyer notifies
Polychromix of the defect. Polychromix’s sole responsibility under this warranty is, at
its option, to replace or repair any defective component part of the product within the
warranty period.
Except in the case of an authorized distributor or seller, authorized in writing by Seller
to extend this warranty to the distributor’s customers, the warranty herein applies only
to Buyer as the original purchaser from Seller and may not be assigned, sold, or
otherwise transferred to a third party.
No warranty is made with respect to used, reconstructed, refurbished, or previously
owned Products, which will be so marked on the sales order and will be sold “As Is”.
BUYER’S SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY IS THAT
THE SELLER EITHER AGREES TO REPAIR OR REPLACE, AT SELLER’S SOLE
OPTION, ANY PART OR PARTS OF SUCH PRODUCTS THAT UNDER PROPER
AND NORMAL CONDITIONS OF USE, PROVE(S) TO BE DEFECTIVE WITHIN
THE APPLICABLE WARRANTY PERIOD. ALTERNATELY, SELLER MAY AT ANY
TIME, IN ITS SOLE DISCRETION, ELECT TO DISCHARGE ITS WARRANTY
OBLIGATION HEREUNDER BY ACCEPTING THE RETURN OF ANY DEFECTIVE
PRODUCT PURSUANT TO THE TERMS SET FORTH HEREIN AND REFUNDING
THE PURCHASE PRICE PAID BY BUYER.
Place of Service
Seller shall use its best efforts to assist buyer to resolve all warranty related issues
through Polychromix customer and 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.
Polychromix DTSTM Near-Infrared Spectrometer iii
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Warranty
Effective Date
The effective date of this warranty shall begin on the date of shipment/date of
invoice, whichever is later. Products are warranted to be free from defects in
materials and workmanship for parts and labor for 1 year with the exceptions
indicated below:
Limitations
Products are warranted to be free from defects in materials and workmanship for
parts and labor for 1 year with the following exceptions:
• Any components of the system that are in direct contact with corrosive materials
are warranted to be free from defects in materials and workmanship at time of
delivery but cannot be further warranted due to the unknown nature of the use of
the product.
• Consumable items such as lamps, cuvettes and optical filters are excluded from
this warranty. If a lamp undergoes a catastrophic failure (e.g., no light at all)
within 90 days of shipment from the factory, it will be replaced at no charge.
• Loss, damage, or defects resulting from transportation to the Buyer’s facility,
improper or inadequate maintenance by Buyer, software or interfaces supplied
by the buyer, unauthorized modification or operation outside the environmental
specifications for the instrument, use by unauthorized or untrained personnel or
improper site maintenance or preparation.
• The sole and exclusive warranty applicable to software and firmware products
provided by Seller for use with a processor internal or external to the Product will
be as follows: Seller warrants that such software and firmware will conform to
Seller’s program manuals or other publicly available documentation made
available by Seller current at the time of shipment to Buyer when properly
installed on that processor, provided however that Seller does not warrant the
operation of the processor or software or firmware will be uninterrupted or errorfree.
• Products that have been altered or repaired by individuals other than
Polychromix personnel or its duly authorized representatives, unless the
alteration or repair has been performed by an authorized factory trained service
technician in accordance with written procedures supplied by Polychromix.
• Products that have been subject to misuse, neglect, accident, or improper
installation.
The warranty herein applies only to Products within the country of original delivery.
Products transferred outside the country of original delivery, either by the Seller at the
direction of the Buyer or by Buyer’s actions subsequent to delivery, may be subject to
additional charges prior to warranty repair or replacement of such Products based on
the actual location of such Products and Seller’s warranty and/or service surcharges
for such location(s).
The warranty period for data processing equipment, including data storage devices,
processors, printers, terminals, communication interfaces, tape drives, and/or all
similar devices, is in all cases limited to ninety (90) days from the date of shipment to
Buyer.
Repaired products are warranted for 90 days with the above exceptions.
iv Polychromix DTSTM Near-Infrared Spectrometer
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License Agreement
IMPORTANT - READ THE FOLLOWING TERMS AND CONDITIONS BEFORE USING THIS
SOFTWARE. OPERATING THE SOFTWARE ON THE EQUIPMENT INDICATES YOUR ACCEPTANCE
OF THESE TERMS AND CONDITIONS.
Polychromix, (hereinafter “Polychromix”) provides this Licensed Program, as defined below, to you, the
end user (hereinafter referred to as “Licensee”), and you, Licensee, accept the Licensed Program on the
following terms and conditions:
1) DEFINITIONS. As used herein, “Licensed Program” means the computer software and
accompanying documentation provided with the System; and “System” means a spectrometer and
accompanying equipment supplied by Polychromix to you, Licensee.
2) GRANT OF LICENSE. Polychromix grants to you, Licensee, a nonexclusive, non-transferable
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4) TERM. The term of this LICENSE will continue until Polychromix provides written consent to
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5) LICENSEE’S RESPONSIBILITIES FOR SELECTION AND USE OF THE LICENSED PROGRAM
AND THE SYSTEM . The Spectrometer and the Licensed Program when used together is a tool that
Polychromix hopes you will find useful in your efforts to test and analyze chemicals. HOWEVER,
POLYCHROMIX DOES NOT WARRANT THAT THE SYSTEM AND/OR THE LICENSED PROGRAM
IS SUITABLE FOR ANY SPECIFIC TASK OR IS ACCURATE TO ANY SPECIFIC DEGREE. You
are responsible for the supervision, management and control of the use of the System and the
Licensed Program, and output thereof, including, but not limited to: (a) selection of the System and
the Licensed Program to achieve your intended results; (b) determining the appropriate uses of the
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the System or the Licensed Program.
Polychromix DTSTM Near-Infrared Spectrometer v
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License Agreement
6) LIMITED WARRANTY. Subject to the other provisions in this Agreement, Polychromix warrants that,
for a period of 1 year from receipt by you, the Licensed Program will conform in all material respects
to the user documentation furnished to the buyer. Polychromix’s sole responsibility under this
warranty will be, at its option, (1) to use reasonable efforts to correct documented errors in said
Licensed Program that are reported to it within the foregoing warranty period or (2) to refund the fees
paid for the LICENSE to the Licensed Program if not sold with the spectrometer as a package.
Polychromix does not warrant that the Licensed Program will be error free, nor that all program errors
will be corrected. All requests for warranty assistance shall be directed to Customer Service,
Polychromix, Inc, 30 Upton Dr., Wilmington MA 01887 USA. Asserted errors must be documented by
the buyer to Polychromix, detailing the error, describing how to recreate the error, and including, if
available, sample output.
EXCEPTIONS. Polychromix’s warranty does not apply insofar as: (a) any Licensed Program is
subjected to misuse, neglect, accident or exposure to environmental conditions beyond those
specified by the documentation; (b) claims result from acts or omissions caused by persons other
than Polychromix or from products, material or software not provided by Polychromix; or (c) you use a
version of the Licensed Program that does not include all required updates provided by Polychromix.
NO OTHER WARRANTIES. THE EXPRESSED WARRANTY SET FORTH IN THIS ARTICLE 6 IS
THE ONLY WARRANTY GIVEN BY POLYCHROMIX WITH RESPECT TO THE LICENSED
PROGRAM, EITHER BY ITSELF OR IN CONJUNCTION WITH THE SYSTEM; POLYCHROMIX
MAKES NO OTHER WARRANTIES, EXPRESSED, IMPLIED OR ARISING BY CUSTOM OR
TRADE USAGE, AND SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
NONINFRINGEMENT, MERCHANTABILITY OR OF FITNESS FOR ANY PARTICULAR PURPOSE.
SAID EXPRESS WARRANTY SHALL NOT BE ENLARGED OR OTHERWISE AFFECTED BY
POLYCHROMIX’S RENDERING OF TECHNICAL OR OTHER ADVICE OR SERVICE IN
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NOT BE HELD RESPONSIBLE FOR THE PERFORMANCE OF OR OUTPUT OBTAINED FROM
THE LICENSED PROGRAM AND/OR THE SYSTEM NOR FOR ANY LIABILITY TO ANY PARTY
ARISING OUT OF USE THEREOF OR USE OF ITEMS DESIGNED WITH THE SYSTEM OR THE
LICENSED PROGRAM.
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USE, LOSS OF DATA, LOSS OF PROFITS, LOSS OF GOODWILL, OR LOSS OF BUSINESS)
ARISING OUT OF OR IN CONNECTION WITH THE PERFORMANCE OF THE LICENSED
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PERFORMANCE OF SERVICES, EVEN IF POLYCHROMIX HAS BEEN ADVISED OF THE
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acknowledge that the Licensed Program was developed at private expense and that the computer
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software, the rights of the government regarding its use, duplication, reproduction or disclosure by the
Government is subject to the restrictions set forth in subparagraph (c)(1)(ii) of the rights in Technical
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the Commercial Computer Software -- Restricted Rights clause at FAR 52.227-19.
Contractor/manufacturer is Polychromix 30 Upton Dr. Wilmington MA 01887.
9) GENERAL. The terms of this LICENSE shall be construed in accordance with the substantive laws
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authorized text for all purposes.
If you have any questions about this Agreement, you may contact Customer Service, Polychromix at (978)
284-6000.
YOU ACKNOWLEDGE THAT YOU HAVE READ THIS LICENSE AGREEMENT, UNDERSTAND IT AND
AGREE TO BE BOUND BY ITS TERMS AND CONDITIONS. YOU FURTHER AGREE THAT IT IS THE
COMPLETE AND EXCLUSIVE STATEMENT OF THE LICENSE AGREEMENT BETWEEN YOU AND
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WRITTEN, AND ANY OTHER COMMUNICATIONS BETWEEN YOU AND POLYCHROMIX RELATING
TO THE SUBJECT MATTER OF THIS LICENSE AGREEMENT.
Copyright © Polychromix, Inc. 2005.
vi Polychromix DTSTM Near-Infrared Spectrometer
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Table of Contents
Warranty......................................................................................................iii
License Agreement......................................................................................v
Table of Contents.......................................................................................vii
1 Introduction.........................................................................................1-1
1.1 Overview......................................................................................1-1
1.2 Description of the Spectrometer...................................................1-3
1.3 Hardware connections..................................................................1-3
1.4 Overview of the Manual................................................................1-3
2 Installation...........................................................................................2-1
2.1 Overview......................................................................................2-1
2.2 Unpacking the Spectrometer........................................................2-2
2.3 Environmental Considerations......................................................2-2
2.4 Interfacing the Spectrometer to the Sample Holder and the Source2-3
2.5 Connecting the Spectrometer to the Computer.............................2-5
2.5.1 For Computers with the Windows Me Operating System..2-5
2.5.2 For Computers with the Windows 2000 Operating System 2-6
2.5.3 For Computers with the Windows XP Operating System..2-7
2.6 Installing the Polychromix DTS SpectralCode Software................2-8
2.6.1 For Computers with the Windows Me/2000/XP Operating
Systems.......................................................................................2-8
3 Quick Start...........................................................................................3-1
4 The SpectralCode Application Program............................................4-1
4.1 Introduction...................................................................................4-1
4.2 General Layout of the SpectralCode Window...............................4-2
4.3 The Menu Bar...............................................................................4-2
4.3.1 The File Menu...................................................................4-2
4.3.2 The Settings Menu............................................................4-3
4.3.3 The Data Collection Menu................................................4-4
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Table of Contents
4.3.4 Spectrum Manipulation.....................................................4-5
4.3.5 Help..................................................................................4-5
4.4 Tool Bars......................................................................................4-5
4.4.1 Upper Tool Bar.................................................................4-6
4.4.2 Lower Tool Bar.................................................................4-7
4.5 The Spectral Region.....................................................................4-8
4.6 The PlotLegend Dialog Box..........................................................4-8
4.7 MultiScan...................................................................................4-11
5 Collecting Spectra and Manipulating Data........................................5-1
5.1 Overview......................................................................................5-1
5.2 Collecting Spectra........................................................................5-1
5.2.1 Collecting the Background Spectrum................................5-1
5.2.2 Collecting a Transmittance Spectrum...............................5-3
5.3 Performing Mathematical Manipulations on the Spectra...............5-6
5.4 Saving and Retrieving Spectra .....................................................5-7
5.5 The Light Meter............................................................................5-9
6 Measuring the Spectrum of a Sample................................................6-1
6.1 Overview......................................................................................6-1
6.2 Using a Cuvette and Sample Holder.............................................6-2
6.2.1 The Cuvette......................................................................6-2
6.2.2 The Sample......................................................................6-2
6.2.3 Collecting a Spectrum.......................................................6-3
6.2.4 Standards.........................................................................6-3
6.2.5 Sample Related Spectra Issues........................................6-3
6.2.6 Quantitative Measurements..............................................6-4
6.3 Using an Integrating Sphere.........................................................6-5
6.3.1 The Sample......................................................................6-5
6.3.2 Collecting a Reflectance Spectrum...................................6-5
6.3.3 Standards.........................................................................6-5
6.4 Spectrum Averaging.....................................................................6-6
7 Maintenance and Troubleshooting....................................................7-1
7.1 Overview......................................................................................7-1
7.2 Maintenance.................................................................................7-1
7.3 Troubleshooting............................................................................7-2
7.3.1 Introduction.......................................................................7-2
7.3.2 If the Spectrum is Noisy....................................................7-3
7.3.3 There is no Signal.............................................................7-3
7.3.4 The Signal Intensity is not Constant..................................7-4
7.3.5 The Wavelength for a Peak has Shifted............................7-4
Appendix A Specifications .................................................................................. A1
Index............................................................................................................I1
viii Polychromix DTSTM Near-Infrared Spectrometer
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1 Introduction
1.1 Overview
The Polychromix DTS
innovative, self- contained instrument that is incorporated into a system that
includes a VIS-NIR light source and a cuvette holder or an integrating sphere.
Figure 1-1: The Polychromix DTS
TM
Near-Infrared Spectrometer (Figure 1-1) is an
TM
Near-Infrared Spectrometer
Polychromix DTSTM Near-Infrared Spectrometer 1-1
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Chapter 1
Three versions of the spectrometer are available:
• DTS™-1700 which covers the 900 - 1700 nm region
• DTS™-2500 which covers the 1700 - 2500 nm region
• DTS™-NB which covers the 1100 - 1300 nm region
Operation of the three systems is identical, except for the wavelength range
that each spectrometer covers.
The spectrometer provides the user with a number of important benefits
including:
• Rapid data acquisition - A spectrum can be acquired in 1 second.
• A minimum power requirement - The spectrometer is driven by a standard
USB port of a personal computer.
• Rugged design - There are no moving parts.
• The performance is unaffected by stray light
• The system is compact and lightweight.
The spectrometer is typically employed as a part of a system that includes a
source and a sample holder (a cuvette holder or a reflectance sphere) as
shown in Figure 1-2. As an example, the spectrometer can be used with the
Ocean Optics HL-2000 Tungsten Halogen Light Source and the Ocean
Optics CUV-UV Holder for 1-cm cuvettes or the Ocean Optics ISP-REF
Integrating Sphere. The source and cuvette holder or reflectance sphere are
acquired separately (e.g. Ocean Optics, Inc., Dunedin FL,
www.oceanoptics.com). As an alternative, the spectrometer can be directly
connected to the source to obtain the spectrum provided by the source).
SOURCE
Figure 1-2: Typical Optical System
SAMPLE
SPECTROMETER
The Polychromix DTS Near-Infrared Spectrometer can be used in a broad
range of applications including
• Portable Field Measurements
• Laboratory Analyses
• Industrial Process Control
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1.2 Description of the Spectrometer
The mode of operation of the detector involves the dispersion of the spectrum
using a standard fixed grating. Each spectral component from the fixed
grating is then imaged onto a pixel region of a microelectromechanical
(MEMS) micro-diffraction grating which is programmed to selectively filter the
light that is directed to a single InGaAs detector. Digital transform encoding is
employed; in this system, a series of 100 pixels are actuated in a sequence of
100 filter masks. Each mask consists of a combination of 50 pixels that are
“on” and 50 pixels that are “off”, thereby providing a 50 % optical throughput,
and sharing an advantage that is employed in Fourier transform infra-red
spectroscopy.
1.3 Hardware connections
The Polychromix DTS™ has two input connectors: (1) a FSMA receptacle
which accepts a fiber optic cable with a standard SMA-905 connector and (2)
a USB mini-B port which connects to a USB host via a standard USB cable.
Introduction
1.4 Overview of the Manual
This manual consists of the following information:
• Chapter 2 Installation – Describes the receipt of the instrument,
interfacing it to other components of the system and environmental
considerations.
• Chapter 3 Quick Start – Presents a sample experiment to demonstrate
that the spectrometer is operating properly.
• Chapter 4 The SpectralCode Application Program – Includes a
detailed description of the operating program.
• Chapter 5 Collecting Spectra and Manipulating Data – Describes how
the SpectralCodeTM operating program is employed to collect and process
spectroscopic data.
• Chapter 6 Measuring the Spectrum of a Sample – Discusses how data
is collected using the spectrometer and discusses sample handling.
• Chapter 7 Maintenance and Troubleshooting – Presents information
about routine operations to optimize the utility of the spectrometer.
An appendix that lists the spectrometer specifications is included.
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2 Installation
2.1 Overview
This chapter describes the steps required to install the Polychromix DTSTM
NIR Spectrometer in your laboratory and verify that the system is operating in
acceptable manner. It includes the following information:
• Unpacking the spectrometer (Section 2.2)
• Environmental considerations (Section 2.3)
• Connecting the system to other components in the system (Section 2.4)
• Loading the software (Section 2.5 and 2.6)
Please refer to the documentation provided with other components of the
system including the light source and sample holder for additional
information.
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Chapter 2
2.2 Unpacking the Spectrometer
The Polychromix DTS spectrometer is packed in a single carton. When you
receive the shipment, examine the carton for external damage. If damage is
observed, make certain that the damage is reported on the shipping receipt
and contact Polychromix for further information.
The following items are shipped with the spectrometer:
a) Spectrometer Module
b) USB Interface Cable
c) CD Containing the Operating Program and Manual
If any parts are missing, contact the shipper and Polychromix for further
information.
NOTE: If there appears to be any damage to the spectrometer, do not
continue the installation. Instead, contact Polychromix for more
information.
2.3 Environmental Considerations
The spectrometer should be placed on a sturdy table or laboratory bench in a
facility where the temperature is between 5oC and 40oC (41oF and 104oF),
and the relative humidity is between 0 and 80%.
NOTE: Do not place the spectrometer near a heating or cooling source
(e.g. avoid placing it near a window or an air conditioning duct).
While the system is not subject to stray light, we recommend that the sample
should not be placed in the general vicinity of a strong light, or a location in
which the light intensity can change dramatically. General laboratory lighting
conditions are acceptable.
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2.4 Interfacing the Spectrometer to the Sample
Holder and the Source
The spectrometer is typically used with the Ocean Optics HL-2000 Tungsten
Halogen Light Source and the Ocean Optics CUV-UV Holder for 1-cm2
cuvettes or the Ocean Optics ISP-REF Integrating Sphere as shown in Figure
2-1 and Figure 2-2.
Installation
Figure 2-1: Polychromix DTS Spectrometer with Source and Cuvette Holder
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Chapter 2
Figure 2-2: Polychromix DTS NIR Spectrometer with Ocean Optics Integrating
Sphere
For additional information about the source, the cuvette holder and the
integrating sphere, refer to the documentation provided with these
components. As an alternative, the spectrometer can be directly connected to
the source to obtain the spectrum provided by the source.
The sample holder and spectrometer are interfaced by a 600 µm core low OH
fiber optic cable with a standard SMA-905 connector that is provided with the
system. When the system is positioned on the table, take care that the cables
are not bent with a small radius; we suggest that all bends have a radius of at
least 10 cm. Once the system is laid out, tape the fiber optic cables to the
laboratory bench so that they are firmly fixed in position to avoid variations in
intensity.
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Installation
2.5 Connecting the Spectrometer to the Computer
NOTE: Administrative access is required to install the spectrometer
hardware and Polychromix SpectralCode Software.
Figure 2-3: Security Dialog Box
Connect the USB cable that is supplied with the spectrometer to an available
USB port on the computer. The operating system should detect new
hardware.
NOTE: Two hardware devices must be installed for your spectrometer
to function properly: USB -> Serial and USB Serial Port.
2.5.1 For Computers with the Windows Me Operating System
Figure 2-4: Add New Hardware Dialog Box
a) Add New Hardware Wizard dialog box will be presented.
b) Insert the Polychromix distribution CD.
c) Select Automatic search and press Next to search for a recommended
driver.
d) Select Finish to complete the installation.
e) Repeat the above procedure for the USB Serial Port.
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Chapter 2
2.5.2 For Computers with the Windows 2000 Operating System
Figure 2-5: Found New Hardware Dialog Box
a) Press Next to present the Welcome to the Found New Hardware Wizard
dialog box.
b) Press Next to present the Install Hardware Device Drivers (USB-Serial)
dialog box.
c) Select the Search for a suitable driver for my device option, and press
Next.
d) The computer will present the Locate Driver Files dialog box. Check
Specify a Location and press Next.
e) A dialog box will be presented to select the location of the driver files.
Insert the Polychromix distribution CD and select the \Drivers\USB
directory, then press Open and finally press OK.
f) The computer will present the message Driver Files Search Results –
Windows found a device for this device. Press Next.
g) The computer will present the message Completing the Found New
Hardware Wizard. Press Finish.
h) Repeat the above procedure for the USB Serial Port.
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