Advanced Operations
6.6Wavelength Scan mode – recording of absorbance and transmittance spectrums
In the wavelength scan mode, the absorbance of the light in a solution over a defined wavelength spectrum is measured.
The measurement results can be displayed as a curve, as percent transmittance (%T) or as absorbance (Abs). The collected data can be printed as a table or a curve.
The data are available for formatting changes. These include automatic scaling and zoom functions. Maximum and minimum values are determined and shown as a table.
The cursor can be moved to any point on the curve for the purpose of reading off the absorbance or transmittance value and the wavelength. The data associated with each data point can also be shown as a table.
6.6.1 Set up the wavelength scan
Press Wavelength Scan in the Main Menu. Press Options for
Parameter Setup.
| Table 14 Wavelength scan setup options | |
Option | Description | |
|
| |
More | For further Options | |
|
| |
Store icon | To store the scan data | |
|
| |
| From the displayed list of stored scans, a record is selected for use as a reference | |
| scan/superimposed scan. This can be highlighted or shown in the background in comparison | |
Reference Off/On | with the actual measured scan. | |
| Note: This option is only available when there are stored scans with the same wavelength range | |
| and step. | |
|
| |
λ | To enter the wavelength spectrum and the scan interval | |
|
| |
| Enables the user to switch the display back and forth between the scan data tables | |
Select View | (wavelength/absorbance) and the graph of the curve. | |
| Note: Select View will be activated after the first reading. | |
Cursor Mode | To select Track or Peak/Valley. The selection for this menu item determines to which points on | |
the graph the cursor moves. | ||
| ||
Send Data | To send Data to a printer, computer or USB memory stick (Type A) | |
|
| |
Integral: On/Off | The integral gives the area and the derivative of the integral gives the original function | |
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