Waters 2489, Руководство оператора

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3-58 Preparing the Detector
3. Enter the storage slot number (1 to 3) of the spectrum you want to
subtract out from the current (or retrieved) spectrum.
4. Press Enter. The message “Subtracting spectrum n” appears.
The detector reviews and subtracts the spectrum specified from the
current spectrum and, after a brief wait, displays the difference
spectrum.
Once the difference spectrum appears, you can store the results in one of the
three storage slots.
Replaying a spectrum
You can play back the current spectrum or a stored spectrum in real time
using the Real-time replay function on the Scan choice list. The detector plays
back the selected spectrum in real time both on the detector display and out
the analog connector to the chart or A/D device in a data collection system.
Once you retrieve a spectrum for playback, the detector displays it
graphically, and you can adjust the AUFS. Sample energy is not charted
during a replay.
Tip:
If you adjust the AUFS on a spectrum for replay, the adjusted spectrum
displays only on the charted output, not on the detector graphical display.
To replay a spectrum:
1. Press SCAN (Shift Chart Mark).
2. Press 6, Real-time replay.
3. Enter the storage slot number (1 to 3) of the spectrum you want to play
back. The default is the last spectrum acquired.
4. Press Enter.
After a pause to retrieve the selected spectrum, the detector begins to
play back the spectrum on the analog connection. Then the spectrum
appears graphically.