Hach Lange DR 3900 User Manual page 104

Expanded programs
104
6. Enter the upper wavelength.
7. Press OK to confirm.
Note: Do not select the same wavelength for minimum and
maximum.
8. Highlight the required wavelength step.
Note: The selection of the interval influences the duration and
resolution of the Wavelength Scan. Scans with a high resolution
take longer than scans with a low resolution. The larger the
increments of the intervals selected, the faster the scan runs. In
contrast, the resolution of the determined data decreases.
In summery maximally 780 measuring steps can be accomplished
during a Scan.
Note: The maximum wavelength adjust automatically if the
difference between the maximum and minimum wavelength is not a
multiple of the interval.
9. Press OK to return to the Scan mode.
Selected parameters are displayed along the graph's x-axis.
Select view (display table)
1. Perform a Wavelength Scan
2. Press Display table in the "Options" menu.
3. A table with the results is displayed.
4. To return to the graph press Options and then View Graph.
Cursor Mode
1. Press Cursor mode: tracking in the "Options" menu.
The selection for this menu item determines what data is
displayed in the table.
2. Highlight Track or Peak/Valley.
3. Press OK to confirm.
4. Press Return to return to the Scan mode.
Integral
The Integral applies to the whole wavelength range of the scan.
1. Press Integral: Off in the "Options" menu.
2. Highlight On to show the Integral.
3. To find the integral of other wavelength ranges, change the
wavelength range and scan again.
4. Press OK to confirm.
(section 6.6.2, page 105)