
Chapter 7 PSD Analysis
7-24 PerSeptive Biosystems
7
7.3.3 Setting PSD Acquisition Parameters
Setting PSD Acquisition parameters includes:
• Displaying the PSD Acquisition control page
• Setting voltages and external calibration for the precursor
spectrum
• Setting precursor mass and PSD calibration for fragment
spectra
Displaying the
PSD Acquisition
control page
To display PSD Acquisition control page:
1. Open the Angiotensin_PSD.BIC file provided. This is
a PSD mode .BIC file.
The PSD Acquisition Settings control page is
automatically displayed if you open a .BIC file that is set
to PSD mode.
To manually display the PSD Acquisition Settings
control page, change the operation mode to PSD by:
• Clicking Mode/Digitizer in the Instrument Settings
control page
• Clicking the Instrument Mode tab
• Selecting PSD
NOTE: Low Mass Gate is automatically disabled if PSD
is specified for Instrument Mode. The Precursor Ion
Selector provides the selectivity needed to screen out
unwanted masses.
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