ViewSpec Pro™ User Manual
Contents
1. i ViewSpec Pro User Manual SD ASD Document 600555 Rev A 2008 by ASD Inc www asdi com psd 7 NGI www asdi com Trademark Information ASD Inc 2555 55th Street Boulder CO 80301 USA Phone 303 444 6522 www asdi com FieldSpec LabSpec QualitySpec TerraSpec AgriSpec RxSpec ViewSpecTM RS3 Indico and goLab are registered and unregistered trademarks and the intellectual property of ASD Inc All trademarks used or displayed in this document are the property of ASD its affiliates or third party owners Unauthorized use of these trademarks is illegal and punishable by law Nothing contained in this document is to be construed as granting by implication estoppel or otherwise any license or right of use of any such trademark without the prior and express written permission of ASD or such third party owner This document contains proprietary information protected by copyright law and may not be reproduced in any manner without the express written approval of ASD Inc The information and specifications contained in this manual are subject to change without notice ASD Inc shall not be held liable for technical editorial omissions or errors made herein nor for incidental or consequential damages resulting from furnishing performance or use of this material Technical Support If you have any questions or concerns please contact ASD Inc by2. asd ME1512100025 asd NE1512100025 35d NETST2100000 asd All Files The following dialog box will be displayed automatically taking you to the 1512100029 asd NEdL15121 ned La NEL15121 xps 3 NEdL15121b ned E NI15121 raw Ni1512100001 asd Al Ni1512100001 asd rad L amp OF1512100000 ad L amp OF1512100001 asd PPR1512100000 asd fs PPR1512100000 asd rac DRS ini RTR1512100000 asd spectrum00001 asd spectrum00002 asd gt Input File Selection window multiple files extensions Select the file s from the list available in the directory Use the Shift or Ctrl keys in conjunction with the mouse click to select Use the Files of type combo box to show only files with certain file When you have selected the files you desire click Open To close files in ViewSpec Pro select File gt Close on the main menu bar ASD Document 600555 Rev A ViewSpec Pro M User Manual ASD www asdi com Chapter 1 ViewSpec Pro 1 2 View File Header Information The Header Information Window displays specific details to each ASD format file Step 1 First select highlight the file or group of files you want Step 2 Select View gt Header Details ViewSpec Pro Version 5 6 File Process MEA Setup Help Graph Data x t Header Info AQEdataNE te SG Cdata5NE1512100001 asd OCdatasNE151 2100002 asd AQE data NE 1512100003 asd Figure 1 6 Header Infor
3. Spectral Data Customization General Plot Subsets Avis Font Color Style Anes Plot Style Comparison Plot Style DIN lt 7 Points Line Anis 2 Paints 5 pline 3D Of O Shadow 30 Mark Data Points Figure 1 10 Plot Customization window Subsets Tab Will display the highlighted files and also adjusts how many subsets are displayed of the plotted data The highlighted files are placed at the top of the plotted data Spectral Data DE NE1512100000 asd NE1512100005 asd NE1512100006 asd NE1512100007 asd ee eee o a ee ee ee AB ee es Spectral Data Customization General Plot Subsets Anis Font Color Style Subsets to Graph a AK E e NE1512100000 as4 al Seroling es NE1512100001 asd subsets i ba Ha ME1512100002 asd NE1512100003 asd NE1512100004 asd AR mmmmmmmmmddememmmemmmemme TY YY YY do NE1512100006 aed NE 1512100006 asd I ME1512100007 a2d ME151 2700008 asd i i i ME1512100009 aed Mi as kawa Rada remo Avia rest Se RESTES RG PAG ME15 1 100010 asd i i NE1512100011 a2d i AREA E 1 AANA A O ee ee AA Bee AA ASA woe E E Figure 1 11 Subsets Customization window ASD Document 600555 Rev A 9 ViewSpec Pro User Manual NGI www asdi com Chapter 1 ViewSpec Pro This group allows the user to view subset information in a variety of ways e If nothing is selec
4. Medium and Small Depending on the size of the graph the user can select the font size that is most readable When printing the graph a font size of Medium or Small is suggested There are occasions the graph may automatically reduce the size of the font in order to produce a higher quality image e Viewing style This customization allows you to quickly adjust the image to best suite printing on a monochrome printer The Graph supports two sets of color parameters a monochrome and a Color color set If four or more subsets are to be included in the graph then Monochrome with Symbols will help distinguish the different subsets e Numeric Precision When placing information into a table or exporting Text Data from the Export Dialog the number of decimal positions can be between 0 to 3 Spectral Data Customization General Plot Subsets Avis Font Color Style Main Title Spectral Data et Numeric Precision Sub Title O0 M3 Viewing Style Grid Lines 2 Color Both OY Ox O None O Monochrome Grid in front of data Monochrome Symbols Font Size lage Med Small Figure 1 9 General graph customization window ASD Document 600555 Rev A 7 ViewSpec Pro User Manual NGI www asdi com Chapter 1 ViewSpec Pro Customization buttons e OK Accepts changes made and closes the customization window e Cancel Accepts all but the last change made and closes the customization wi
5. value text file to ASD binary file format ASD Document 600555 Rev A 22 ViewSpec Pro User Manual ASD www asdi com Chapter 1 ViewSpec Pro Jcamp DX Export This process converts data files into JCAMP DX text files Files can be exported Individually or similar files can be combined into an array and conveniently output as a single file Header data can not be exported in JCAMP DX format Files exported with this utility can be imported into many Chemometrics and multivariate analysis programs such as The Unscrambler from CAMO or GRAMS 32 from Galactic Industries Contact the marketing department at ASD 303 444 6522 for more information about the application of this technology The following dialog box is shown when JCAMP DX is selected Views pec Pro 1 ViewSpec Pro can create a single JCAMP DX File From all the selected Files Would vou like to make a single File Figure 1 28 Jcamp DX Export window Custom Several functions have been provided to enable some limited data manipulation These functions will multiply divide add or subtract the data in the selected binary data file s by a constant OR by the data in a single binary data file At this time it is NOT possible to select the input files into the denominator of a ratio divide operation ASD Document 600555 Rev A 23 ViewSpec Pro User Manual ASD www asdi com w Custom Functions Operation fe Ratio f Multiply f Add f Subtract
6. Data Customization General Plot Subsets Avis Font Color Style NE16241100003 asd Ki a El ME16241100006 asd E NET6241 100007 asd Point Type GR Line Type 3 Figure 1 15 Style Customization window ASD Document 600555 Rev A 13 ViewSpec Pro User Manual NGI www asdi com Chapter 1 ViewSpec Pro 1 3 2 Legend Clicking on the legend button in the upper right hand corner will open a display window showing the file name s and the associated plots al Data 241100004 asd 944100007 asd ME16241100003 aed ME16241100004 aed NE162411 00005 asd NE162411 00006 asd NET6241 100007 aed A Figure 1 16 Legend Display window 1 3 3 Format After having graphed data change the viewed format of the plotted data by using the Format menu This is required when using the version 7 file format asd to display anything other than DN pai ViewSpec Pro Graph sale Print Export Title Subtitle DN Spectral Data Reflectance l ms Transmittance E 103 354 E16241 100004 45 Log 1 R maa ING asd ME16241100007 as Log LIT EE CA Radiance Trradiance k Reference Calibration k Derivative Gap w Show legend above graph Figure 1 17 Format Spectral Data window Using the format menu only changes the graphed data and does not create a processed file ASD Document 600555 Rev A 14 ViewSpec Pro User Manual Chapter 1 ViewSpec Pro ASI www a
7. Data Source C File Constant Figure 1 29 Custom Functions window ASD Document 600555 Rev A 24 Chapter 1 ViewSpec Pro Cancel ViewSpec Pro M User Manual ASDre www asdi com INDEX Numerics 1st Derivative 17 2nd Derivative 19 A Apply 8 ASCII Export 22 Axis Tab 11 C Color Tab 12 Custom 23 E Export 8 15 F Font Size 7 Font Tab 11 Format 14 G General Tab 7 graph 6 properties 7 Graph Attributes 12 Grid characteristics 7 I Import ASCII X Y 22 Interpolate 21 J Jcamp DX Export 23 L Lambda Integration 20 Legend 14 Log 1 R 1 T 17 M Maximize 8 N NEDL 21 Numeric Precision 7 O Original 8 ASD Document 600555 Rev A INDEX p Parabolic Correction 19 Plot Tab 9 Print 15 Processing files in ViewSpec 16 Q Quantum Intensity 20 R Radiometric Calibration 16 Reflectance Transmittance 16 S Setup 1 Splice Correction 20 Statistics 21 Style Tab 13 Subsets Tab 9 support ii T technical support ii Title and subtitles 7 trademarks ii V View File Header Information 4 Viewing style 7 Z Zoom 6 XXI ViewSpec Pro User Manual
8. O Mas Min Max Miri A Mas Pa As Linear Log Auto O Min O Max Min Max Figure 1 127 Axis Customization window Font Tab Font control of the Main title Sub title and Axis labeling The graphed data only supports True Type fonts because they re scalable For the Main Title Sub Title and Labels the user can also select font attributes of Boldness Italics and Underline Spectral Data Customization General Plot Subsets Avie Font Color Style Main Title Times New Roman w bold litaic Junderine S ub T ithe bold Jitalic underline Subset 7 Point As Labels Jbold Jitalic _ underline sample Figure 1 13 Font Customization window ASD Document 600555 Rev A 11 ViewSpec Pro User Manual ASD www asdi com Chapter 1 ViewSpec Pro Color Tab Color control of foreground background and shadowing Spectral Data Customization General Plot Subsets Avis Font Color Style Graph Attributes Desk Foreground O Desk Background a El CO Shadow Color E Graph Foreground Graph Background Figure 1 14 Color Customization window To adjust colors 1 Select the desired graph attribute in the Graph Attributes section The corresponding color for that attribute will be highlighted in the color selection grid 2 To change the color either use the mouse to click an alternate color or use the
9. Spec Pro by using one of the following e From the RS3 Software Control gt ViewSpec Pro pull down menu Alt C V e Clicking on the ViewSpec Pro icon from the desktop 1 1 ViewSpec Setup Step 1 Select the input directory for the spectra files The input directory 1s the location where your spectra data files reside as well as your calibration files For the input files use e Setup gt Input Directory pull down menu item e Alt S key combination ViewSpec Pro Version 5 6 File Process View EN Help Input Directory cc O Cdata z Output Directory c OCdata C GCdata 1i15121 ta EE C 54O Cdata NE 1512100000 asd CG Cdata4NE 1512100001 asd PAT dara HE 1619102 asd Figure 1 1 Setup pull down menu 2008 ASD Inc 1 ViewSpec Pro User Manual ASD www asdi com Chapter 1 ViewSpec Pro When selecting a new input directory a window will open asking if you want the output directory to be the same as the input directory ViewS pec Pro Do vou want bo make it the same as the INPUT directory The default OUTPUT directory is different Figure 1 2 Output Directory Option window Step 2 The input and output directories do not have to be the same directory To select a different output directory for the spectra files For the output files use e Setup gt Output Directory pull down menu item e Alt S O key combination The input and output directories do not have to be the same direct
10. d Lambda Integration ktop OI CNO C2AME1624110001 asd top O CAOCANE 16241100011 ad ela sktop OC GC2SNE 16241100012 asd Interpolate ktop OC ACAMNET 6241100013 asd Statistics kbop Q CSO CANE16241 100014 asd MECL ASCI Export Import Ascii X Y ICAMP DE Export Bran Luebbe Custom Figure 1 20 Process pull down menu Reflectance Transmittance The ratio of the total amount of radiation as of light reflected by a surface to the total amount of radiation incident on the surface Radiometric Calibration Converts RawDN to radiance or irradiance Applies only to FieldSpec and HandHeld Requires additional calibration files that can be purchased from ASD Please contact your sales associate The software formula for ir radiance spectra is lampfile x calpanelfile x inputfile x calITG calibrationfile x inputITG x where e Lis the radiance to be calculated on a channel by channel basis e lampfile is the calibrated irradiance file for the lamp e calpanelfile is the calibrated Spectralon reflectance file e inputfile is the unknown dark current corrected input file ASD Document 600555 Rev A 16 ViewSpec Pro User Manual NGI www asdi com Chapter1 ViewSpec Pro e calITG is the integration time and or gain of the calibration file e calibrationfile is the dark current corrected raw data collected at ASD e inputITG is the integration time and or gain of the input file The divisor of 7t is auto
11. eak Positions from Composit Spectra with a Digital Computer Analytical Chemistry vol 40 no 6 May 1968 pp 905 914 ASD Document 600555 Rev A 18 ViewSpec Pro User Manual NGI www asdi com Chapter1 ViewSpec Pro Derivative spectra yield good signal to noise ratios only if the difference of noise levels at the endpoints of the interval is small enough to yield a noise equivalent AdF dA calculation much smaller than the absorbance 2nd Derivative Takes the second derivative of the data Parabolic Correction Background ASD Full Range instruments should be warmed up before being used to collect radiometric data The reason for this is the inherent variations in detector sensitivity when used under different ambient temperatures The variations occur in the VNIR array and the SWIR2 detector but do not appear to be pronounced in the SWIR1 detector 1000 to 1800 nm Uncorrected 10 min 80 min Ratio of Instrument Responses at 10 30 and 50 minutes Uncorrected 30 min 80 min _ Uncorrected 50 min 80 min to 80 minute warmup period Relative Radiance 500 1000 1500 2000 2500 Wavelength Figure 1 23 Detector Responses during warmup period ASD Document 600555 Rev A 19 ViewSpec Pro User Manual NGI www asdi com Chapter 1 ViewSpec Pro A sufficient warmup period can be difficult to achieve when the instrument is used in the field particularly when using battery power alone The
12. iguration for calibration with bare fiber at 10 spectrum averaging 30 spectra are saved and the standard deviations from the means at all channels are calculated and converted to radiance data This data will tell what the true performance of the unit is like and that it is meeting noise specifications ASD Document 600555 Rev A 21 ViewSpec Pro User Manual ASD www asdi com Chapter 1 ViewSpec Pro ASCII Export This process converts data files into ASCII text files Files can be exported Individually or similar files can be combined into an array and conveniently output as a single file Header data can also be included with the data files or exported independently Files exported with this utility can be imported into many analysis spreadsheet or database programs When ASCII Export is selected the following Dialog Box is displayed ASCII Export Data Format for asd files only DN Reflectance Radiance rradiance O Log 17A O Log 14T Transmittance Dervative None Ost 2nd Headers Data Organization Print Header Information Columns Print ONLY Header Information O Rows AMIS Print es Wavelength Channel Output to a Single File Field Seperator Column Title Print Column Title Ce Print FileName s at Top of Column Print Collect Time s at Top of Column Print Description Note Figure 1 27 ASCII Export window Import ASCII X Y Converts XY wavelength data
13. keyboard arrow keys to move to adjacent colors As the highlighted color selection changes position the sample image will be updated with the newly selected color 3 Finally Pressing the OK button will update the color parameters of the object Graph Attributes Desk Background This is the color that surrounds the bounding rectangle of the graph s grid Desk Foreground This is the color that is used when placing text onto the Desk Background This includes the main title sub title subset point labels grid numbers and axis labels Shadow Color The rectangles that make up the graph s grid and table and bounded at the bottom right edges with shadows To remove the shadows choose the same color as the Desk Background ASD Document 600555 Rev A 12 ViewSpec Pro User Manual NGI www asdi com Chapter 1 ViewSpec Pro Graph Background This 1s the color used as the background color of the graph s grid Graph Foreground This 1s the color used for the bounding rectangles of the grid the grid lines of the graph and lines that are used to bound some of the plotting methods like the bounding line around bars of the Bar Plotting Method Table Background This 1s the color used in filling the table s rectangle Table Foreground This is the color used in bounding the table s rectangle and for the text inside the table Style Tab Allows control over each plotted spectral line s point type line type and color Spectral
14. matically left out in the calculation of an Irradiance E measurement The software knows which formula to use by looking at the foreoptic specified in the header of the data file 1 Irradiance E which is the radiant flux D per unit of area or E d dA given in W m2 This term is only definable at a given distance from a given radiant energy source or through a given surface in space without regard to sources 2 Radiance L is the radiant flux emitted from a source per unit of solid angle per unit area Log 1 R 1 T Converts reflectance or transmittance to absorbance Absorbance log 1 Transmittance A commonly used math pretreatment useful for linearizing reflectance data This expression is often abbreviated as log 1 R In most cases it is possible to find a linear correlation of log 1 R data to concentration of an analyte in the target matrix However a general derivation relating reflectance to concentration cannot be rigorously derived such as the Bouguer Lambert Beer law for transmittance 1st Derivative Takes the first derivative of the data The algorithm uses a specified gap distance to skip that number of points to take the differences instead of adjacent data points Derivative Gap Figure 1 21 Derivative gap window Derivative Spectrum A spectrum that is the result of applying a derivative transform to the data of the original spectrum Derivatives of spectra are very useful for two
15. mation window The following dialog box will be displayed E Header Information a E3 We lnstrumentsSHAS1S 4152 41520 O CR 71520100000 asd Instrument Number 11520 Wavelength Start Calibration Number Wavelength Step Sample Count ET Calibration Filez BSE bse1 5201 ref LMP mp1 5201 il FO ni 5201 raw pict URE Foreoptic ID Figure 1 7 Header Information window Details include 1 File name and Directory location 2 Instrument e Instrument serial and calibration number e Spectrometer calibration details starting wavelength step size ASD Document 600555 Rev A 4 ViewSpec Pro User Manual NGI www asdi com Chapter 1 ViewSpec Pro Associated calibration files Data type Raw DN Reflectance Radiance etc Number of samples averaged Type of foreoptic used 3 Detectors Integration time Gain and Offset values Dark Current and or white reference values Status field indicating when a dark current and or white reference was collected 4 Misc Comments Min max axes values Date and time spectra was saved Program version and file version 5 GPS GPS Data Latitude and Longitude in decimal minutes Elevation in meters and time UTC 6 Smart Detector IF enabled in RS3 Serial number current values Gain averaging temperature humidity Only fields with white backgrounds can be altered If unfamiliar with these data fields contact ASD Field Support before modifyi
16. ndow e Apply The Apply button 1s similar to the OK button but does not close the customization dialog e Help Not used at this time e Original By pressing the Original Button the display will be shown with the Original set of parameters e Export Graphs can export the following formats to the listed destinations e File Destination If information 1s to be exported to a file then you must enter a target filename Click the mouse over the Browse button to show the File Save As Dialog Enter a filename and select OK to close the File Save As dialog e Printer Destination If you re exporting a metafile to the printer pressing the Print button will show the Print Dialog Use the Print Dialog to make changes to the selected printer orientation paper bin and other printer options e Exporting Text Data When exporting Text Data pressing the Export button launches the Text Data Export Dialog e Maximize Maximizing resizes the display to use the entire video display The display is actually copied to a maximized dialog window The dialog maximized object can be closed by pressing Escape or by using the mouse to Click the title bar Making customizations to the maximized object will not effect the original non maximized object ASD Document 600555 Rev A 8 ViewSpec Pro User Manual ASD www asdi com Chapter1 ViewSpec Pro Plot Tab Adjusts the plot style Line points and line or points and spline
17. ng ASD Document 600555 Rev A 5 ViewSpec Pro User Manual Ka 5D www asdi com Chapter 1 ViewSpec Pro 13 View Graphs Select View gt Graph to display up to fourteen ASD format files pai ViewSpec Pro Graph Format Print Export Title Subtitle Spectral Data Si ME16241 700003 45d ME16241 100004 asd ME16244 100005 asd ME16241100006 asd ME16241 700007 asd 1250 1500 1750 2000 2250 Wawelength 47529 0487 Figure 1 8 Example showing a spectral graph Step 1 To Zoom e Press and hold the Shift key e Press the left mouse button and drag the cursor to select the new extents e Release the mouse button Step 2 To Undo the Zoom Press the Z key or use the popup menu to select the Undo Zoom menu item ASD Document 600555 Rev A 6 ViewSpec Pro User Manual ASD www asdi com Chapter 1 ViewSpec Pro 1 3 1 Editing Graph Properties Double clicking on the graph will open the Spectral Data Customization window allowing changes to be made to the graph format General Tab e Title and subtitles These two edit boxes allow editing and deletion of main and sub titles If no title is present entering one will add one If you remove all the characters from a title it will be deleted from the image e Grid characteristics The Graph can contain vertical grid lines horizontal grid lines both vertical and horizontal grid lines or no grid lines e Font Size The Graph supports three font sizes Large
18. ory The current input and output directories are shown on the bottom of the ViewSpec window as shown below LSA LOAL ME bole UDONG 950 1032008 10 56 52 AM AS Input Path CMACdatal amp Output Path c QCdata Figure 1 3 Input and Output Directory Location Step 3 Select File gt Open on the main menu bar and then choose the files for post processing RS files will have different extensions three digit numbers depending on the file format or how they were generated ViewSpec Pro Version 5 6 File Setup Help Exit Figure 1 4 File pull down menu ASD Document 600555 Rev A 2 ViewSpec Pro User Manual Chapter 1 ViewSpec Pro ASD www asdi com directory Select Input File s Look in LD GCdata QE EF a My Recent Documents My Documents My Computer My Network Step 4 Step 5 Step 6 E mp15121 il ME1512100000 ss ME1512100001 Piiuersiz1 O NE1512100003 a5 FYINeE1S12100004 as ue1s12100005 as NE1512100006 as Piue1s12100007 as ne1512100008 as ss ME151 100009 ME151 100010 ss ME151 100011 ss ME151 100015 File name Files of type Figure 1 5 selected in step 1 1512100014 asd ss ME151 100015 asd ss ME151 100016 a5 IE NE1512100017 as NE1512100018 a5 NE1512100019 as MINE 151210002025 MINE 1512100021 as MINE 1512100022 as Piiuersiz1 as NE1512100024 as asd NE1S12100025 a5 asd ss ME151 100026 a5 ss ME151 100027 a5
19. phone fax or email Phone 303 444 6522 X 144 Fax 303 444 6825 email support asdi com Web www asdi com ftp ftp asdi com Technical support is committed to providing you with a timely response to your questions We will work with you to provide solutions to your applications Technical support is available to answer your questions Monday thru Friday 8 am to 5 pm Mountain Standard Time We will happily respond to your e mail queries as well ASD Document 600555 Rev A il ViewSpec Pro User Manual ASD www asdi com Table of Contents Trademark Information 0ccoccocccccc es li Technical SUDDO ecc BA a a e le a ie ea li 1 View File Header Information 4 View GIaphsS o o oo ee ee eee eee 6 Editing Graph Properties 7 General Tab 7 Plot Tab 2 9 a 9 A TE Heese 11 o A 11 tc APA pean se ehtetneecsiaion 12 sig AA 13 E A AA 14 PO sr accredited eds ide e ad a eee aes 14 PU arcas aora PAT 15 SI Ode GO AN Re AT AG AA MAS WADA 15 Processing files in ViewSpec 16 a eae oe ees XXI ASD Document 600555 Rev A Hi ViewSpec Pro User Manual Chapter 1 ViewSpec Pro The ViewSpec application is a program used for post processing spectra files that were saved using an ASD instrument You can initiate View
20. reasons ASD Document 600555 Rev A 17 ViewSpec Pro User Manual NGI www asdi com Chapter 1 ViewSpec Pro 1 First and second derivatives may swing with greater amplitude than the primary spectra For example a spectrum suddenly changes from a positive slope to a negative slope such as at the peak of a narrow feature see the figure below The more distinguishable derivatives are especially useful for separating out peaks of overlapping bands __ 7 Sudden change in the curve Absorbance spectrum First derivative Second deriv ative Figure 1 22 Derivative peaks 2 In some cases derivative spectra can be a good noise filter since changes in base line have negligible effect on derivatives For example scattering increases with wavelength for some biologically active macromolecules causing an increasing slope of the absorbance baseline The approximation used for the first derivative is F A F A AA F A AA 2AX A more accurate approximation of the first and higher order derivatives is presented in thorough explanations by Whitaker and Morrey Still other methods involve a best fit match to the curve on the features of interest and performing higher order derivatives with numerical analysis 1 Stephen Whitaker and R L Pigford Numerical Differentiation of Exper imental Data Industrial and Engineering Chemistry vol 52 no 2 Febru ary 1960 pp 185 187 2 J R Morrey On Determining Spectral P
21. sdi com 1 3 4 Print The graphed data can be printed The printer setup is dependent on the printer drivers installed Sub Title Format Print Export Title Orientation Size Letter z z Landscape Source Automatically Figure 1 18 Print Spectral Data window 1 3 5 Export The graphed data can be exported as a picture or data file The type of file and picture size can be configured in the export window Es ViewSpec Pro Graph Exporting Spectral Data Export CJ Metafile BMP JPG CJ Test Data Only Export Destination ClipBoard File Browse oe Cc CO Printer Object Size a No Specific Size O Millimetera Cy Inches C Points Width 1000 590 Units i Figure 1 19 Export Spectral Data window ASD Document 600555 Rev A 15 ViewSpec Pro User Manual ASD www asdi com Chapter 1 ViewSpec Pro 1 4 Processing files in ViewSpec From the Process pull down menu an applicable post processing option for the selected spectra file s can be selected ViewSpec Pro Version 5 6 File Site View Setup Help Reflectance Transmittance Radiometric Calculation E htop O CAOCCA NE 16241100003 asd C Log 1 R Log 1 T ktang CMOC24NE 16241100004 asd E 1st Derivative kop CO CAMNE 16241100005 asd EN 2nd Derivative top QC SO CANE 16241100006 asd E ktop QC QC24NE 16241100007 asd cata ktop GC3GCA NE 16241100008 asd Splice Correction ktop 4G CAO C2ANE16241100009 as
22. stability of the SWIR1 detector offers a possible solution Using the endpoints of SWIRI and the shape of the response change curves it is possible to mathematically characterize and adjust for the temperature dependent sensitivities of the two variable ranges Since the varying spectral regions appear somewhat parabolic a pair of partial parabolas inserted into what otherwise is an identity matrix can be used to correct the temperature sensitive channels This is known as Parabolic Correction see ftp ftp asdi com Technical Documents pcorrect pdf for further details This process integrates data by applying parabolic corrections at the splice point between the spectrometers for radiance and irradiance only Input files selected for this process must be ASD binary Radiance or Irradiance files During this operation the following dialog will be displayed VHIR Vertex CAPropecte IES PECPROANEDLASNARO0004 azd rad DE 350 nm ts the Starting Wavelength OK 1000m is the First Splice Wavelength Cancel Enter a Valid WYNIA Vertes Location Figure 1 24 Splice Point Vertex window Choose the VNIR vertex point wavelength for the parabolic correction Then choose the SWIR2 vertex for its parabolic correction Splice Correction A bias value is calculated for the VNIR and SWIR2 regions and they are offset to match the SWIRI at the splice point This is usually done only for presentations and documentation or when using data to ma
23. tch against a spectral library it is not meant to correct the data Lambda Integration Integrates or averages wavelengths over a certain area that is set by the end user Quantum Intensity Converts from Irradiance W mA2 nm sr to Micro Einsteins ME s mA2 nm ASD Document 600555 Rev A 20 ViewSpec Pro User Manual NGI www asdi com Chapter 1 ViewSpec Pro Interpolate Interpolates data to 1 nm intervals and will truncate data to a user specified spectral range This feature 1s especially useful for Dual UV VNIR target and reference comparisons Input files selected for this process must be ASD binary data files When interpolation is complete the following dialog will be displayed ViewS pec Pro 7Files Interpolated Do vou want bo truncate these spectrum Files Figure 1 25 Interpolation Result window Statistics This process applies standard statistical functions Mean Median and Standard Deviation to the selected files Mean Standard Deviation and Median distinguishes the noise of each spectrometer These statistical operations cannot be performed on single files w Statistics Median Standard Deviation Cancel Figure 1 26 Statistics window NEDL Noise Equivalent Delta Radiance a measure of sensor performance and radiometric precision To collect data for the NEDL Noise Equivalent change in Radiance properties of the instrument no foreoptic is attached in the conf
24. ted in the listbox and Scrolling Subsets equals zero then the object will display all subset information 14 subsets graph maximum and no limit on the amount of subsets tabled e If there are selections in the listbox and Scrolling Subsets equals zero then the object will display only those subsets selected e If nothing is selected in the listbox and Scrolling Subsets is non zero then the object will scroll through subset information by the amount defined by Scrolling Subsets e If there are selections in the listbox and Scrolling Subsets is non zero then the object will maintain those selected subsets as permanent subsets and revolve through the remaining subsets in increments of Scrolling Subsets The following table summarizes the Subsets to Graph variations Selected Subsets Scrolling Subsets Result no no Display all subsets no Display only those selected subsets Scroll through all subsets Permanent selected subsets amp scroll through remaining subsets ASD Document 600555 Rev A 10 ViewSpec Pro User Manual ASD www asdi com Chapter 1 ViewSpec Pro Axis Tab Linear or log scaling and Min max control of both the X and Y axis Depending upon the Auto Min Max and Min Max item selected the appropriate text boxes will be enabled allowing you to set the axis range Spectral Data Customization General Plot Subsets AXIS Font Color Style Y ARS Linear Log Auto O Min
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