AvaRaman Operating manual AvaSoft Raman 7.3 November 2008

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2.3.2.5 Setup Menu: Subtract Saved Dark This option is used to subtract the dark spectrum that has been saved (File-Save Dark) from the raw scope data. After starting up AvaSoft, this menu option is always unselected, because a dark spectrum needs to be saved or loaded before it can be subtracted. If this menu option is preceded by a checkmark, the scope data is corrected with the saved dark. 2.3.2.6 Setup Menu: Options 2.3.2.6.1 Setup Menu: Options – Check on Saturation The 14-bit A/D converter in the AvaSpec results in raw Scope pixel values between 0 and 16383 counts. If the value of 16383 counts is measured at one or more pixels, then these pixels are called to be saturated or overexposed. Since saturated pixels can disturb the measurement results, a lot of attention has been given in AvaSoft (and the driver package as161.dll) to detect saturation and to notify the user if a measurement contains saturated pixels. This notification is done in such a way that the user can always decide to ignore the saturation, for example if the saturation happens at pixels that are not in the wavelength range where the user is interested in. Saturation can usually be solved by selecting a shorter integration time. In AvaSoft, different levels of saturation detection can be set, and there are also different options for notification, as shown in the figure at the right. Saturation detection levels The default level of saturation detection is “Detect Saturated Pixels at saturation level”. The third (autocorrect inverted pixels) level has been implemented to be able to correct heavily saturated pixels (at a light intensity of approximately 5 times the intensity at which saturation starts). These pixels will return values
heavily saturated peaks, the autocorrect can be used. To illustrate this, a strong peak from the AvaLight-CAL calibration line source was heavily saturated at 435.84 nm. This caused the most heavily saturated pixels to return inverted (
Page 1 and 2: AvaRaman Operating manual AvaSoft R
Page 3 and 4: 2.3.1.6 File Menu: Print 27 2.3.1.7
Page 5 and 6: 0 SAFETY PROCEDURES AND WARNINGS FO
Page 7 and 8: 1.0 AvaRaman System The AvaRaman Ra
Page 9 and 10: 1.2 Technical Data 1.2.1 Technical
Page 11 and 12: AvaRaman-PRB-FC-785 3/8" SS focusin
Page 13 and 14: RS-232 connector The RS232 interfac
Page 15 and 16: 1.4 Hardware Installation 1. Unpack
Page 17 and 18: After the drivers have been install
Page 19 and 20: 2.1 Quick Start: Measuring and savi
Page 21 and 22: Print button By clicking the Print
Page 23 and 24: 2.2.4 Graphical region The graphica
Page 25 and 26: 2.2.6 Find peaks or valleys by CTRL
Page 27 and 28: 2.3.1.3 File Menu: Load Experiment
Page 29 and 30: Select the name of the file(s) to b
Page 31 and 32: 2.3.2 Setup Menu 2.3.2.1 Setup Menu
Page 33: The spline interpolation can be use
Page 37 and 38: 2.3.2.6.2 Setup Menu: Options - Ful
Page 39 and 40: 2.3.2.6.4 Setup Menu: Options - Aut
Page 41 and 42: The PTFE spectrum will be used to c
Page 43 and 44: The figures above illustrate a base
Page 45 and 46: By clicking the menu option “View
Page 47 and 48: 2.3.4 Applications: History Channel
Page 49 and 50: You can refer to the other history
Page 51 and 52: A number of seconds between saving
Page 53 and 54: Zoom out: drag with the left mouse
Page 55 and 56: 2.3.5 Applications: Excel Output Av
Page 57 and 58: The sheet will be called ‘AvaSoft
Page 59 and 60: Press the ‘Select File’ button
Page 61 and 62: 2.3.5.6 Limitations and Optimizatio
Page 63 and 64: The box shows 16 values, correspond

AvaRaman Operating manual AvaSoft Raman 7.3 November 2008

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