![THORLABS SP USB Series Operation Manual Download Page 29](http://html1.mh-extra.com/html/thorlabs/sp-usb-series/sp-usb-series_operation-manual_1110995029.webp)
27
Operating Instruction
© 2008 Thorlabs
There are four modi available:
Scope:
The normal view
Relative difference: The relative changes with respect to reference or background
Absorbance:
The absorbance view
Transmittance:
The transmittance view
Scope:
The scope view is the standard view in SPLICCO. The reference curve is shown
as well as the original measurement data but they are not calculated to each
other in any way.
Calculations with a reference curve are not supported for line cameras.
Figure 28
Scope mode
Relative difference measurement:
The relative difference view shows the the live measurement values divided by
the reference curve values. Only changes in the spectrum will be displayed.
The original reference curve is still shown to allow an easy comparision.
Figure 29
Relative difference mode
Absorbance:
The absorbance view shows the light absorbtion by a sample. The original
reference curve is still shown to allow an easy overview.
The absorbance is calculated by the following equation:
(1)
A
l
-
Absorbance at a specific wavelength
O
l
-
Original measurement value for a specific wavelength
R
l
-
Reference curves value at a specific wavelength
Figure 30
Absorbance mode
Transmittance:
Summary of Contents for SP USB Series
Page 1: ...2008 Operation Manual Thorlabs SPx USB USB 2 0 Fiber Optical Spectrometer ...
Page 2: ...Version Date 1 0 08 Feb 2008 2008 Thorlabs 2008 Thorlabs ...
Page 6: ...General Information Splicco Part I ...
Page 9: ...Installation Splicco Part II ...
Page 20: ...Operating Instruction Splicco Part III ...
Page 46: ...Virtual devices Splicco Part IV ...
Page 50: ...Service and maintenance Splicco Part V ...
Page 53: ...Specifications Splicco Part VI ...
Page 55: ...53 Specifications 2008 Thorlabs 6 1 Dimensions Figure 60 SPx USB dimensions ...
Page 56: ...Certifications and compliances Splicco Part VII ...
Page 58: ...Appendix Splicco Part VIII ...
Page 65: ......