Hach-Lange DR 6000 User Manual - Manual (Page 109)

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Expanded programs
1. Select in the main menu the menu option Wavelength Scan.
2. Insert the zero solution cell in the cell compartment and
close the cell compartment cover.
3. Press Zero.
"Zeroing" is shown below the graph as the baseline scan
begins.
4. Insert the prepared analysis cell into the cell compartment
and close the cell compartment cover.
5. Press Read.
Under the graph, the display "Reading..." appears, and a
graph of the absorbance or transmission values for the
scanned wavelengths is continuously displayed.
The Wavelength Scan is complete, if
• the graph is shown full-size,
• the scaling of the x-axis occurs automatically,
• the Cursor functions in the vertical navigation bar are
highlighted.
• a sound is emitted
• To save the scan, press Options > Store symbol.
6.5.2.1 Navigation of the wavelength scan graph or a wavelength scan analysis
Table 15 Navigating the wavelength scan
Cursor function/
Zoom function
Description
Curve Icon
(Choice of Cursor mode) Choice of Cursor mode Peak/Valley (cursor moves between minimum/maximum absorbance
values) or Cursor mode Tracking (cursor moves over each data point of the scan).
Arrow keys
The arrow keys (right/left) are used to move the cursor (depending on the selected mode) to the
next data point. The data of the data point (wavelength/absorbance or transmittance value) are
highlighted on the x and y axes.
Note: Press any point on the curve to display the associated data.
Zoom Icon
This function is used to magnify the section of the curve in the vicinity of the cursor. The original
curve size can be restored by pressing the zoom icon again.