Waters 2475, Operator'S Manual, Page: 111 / 228

Operating the detector 3-39
4. Specify the other operating parameters and any timed or threshold
events, if desired.
5. Specify the desired gain.
6. Press A/B to switch channels. The home screen for the other channel
appears.
7. Specify the operating parameters for the second excitation and emission
wavelength pair monitor, the gain, and any timed and threshold events,
if desired.
For more information on operating the detector in single-channel mode, see
page 3-37 .
For more information on programming timed and threshold events, see
page 3-43 .
Tip:
In multichannel mode, do not set the gain setting for each channel
individually.
Obtaining a MaxPlot or difference plot
You can obtain a MaxPlot or difference plot by monitoring fluorescence at two
selected wavelengths while plotting the maximum fluorescence for each
sample component. Be sure the detector is operating in multichannel mode.
To obtain a MaxPlot or difference plot:
1. From the home screen, press Next.
Screen 2 of 4 appears (see the figure “Secondary functions of the home
screen” on page 3-17 ).
2. Select the filter type (Hamming is the default) in the first field, and
press Enter.
3. In the second field (analog out), make the appropriate selection:
• 3, maxplot A,B
• 4, difference A-B
• 5, difference B-A
4. Press Enter to select the MaxPlot function.
5. Return to the home screen by pressing HOME.