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RGA100/200/300 Software

Analog mode provides a line graphrepresentation of the acquired mass spectrum (partial pressure vs. mass number). Span, resolution and noise floor can each be set. Scans can be single-shot, timed or taken continuously. Pressure vs. time presents a strip chart ofpartial pressures for selected masses and provides a complete time history of your data. Complete scrolling and zoom control is available even while data is being acquired. This mode is most often used formonitoring process trends. Library mode contains a comprehensivelist of gases that can be used to compare against the current spectrum. Asearch mode allows you to select up to 12 masses and identify and display (numerically and graphically) the intensity of all gases thatcontain these masses. Histogram mode displays a bar graph ofpartial pressure vs. mass, allowing the spectrum to easily be interpreted. This mode is often used for quick and easy vacuum analysis. The screen can be splitfor viewing two modes of operationsimultaneously. Leak detection mode monitors a particularmass number (not just helium) over time, and combines many features of the previous modes. Avertical bar graph provides a visual reference for viewingchanges in intensity from a distance. Aprogrammable audible tone, large numeric read-out, and visual alarm are also provided. Analysis utility provides an approximationof the composition of gases being monitored by the RGA. Since more than one gas can contribute to a particular amu’s partial pressure, the analysis modeis extremely useful in determining themake-up of complex gases. Up to 12 commongases can be selected for the analysis. Annunciator mode is provided forconveniently monitoring up to 10 masses.If a particular mass has tripped its preset alarm, the large box will turn red indicating a problem. An audible alarm will also be present until the mass falls back within its preset limits. This mode is most often used for Go/No-Go testing. Table mode provides a readout of mass,scaling factor, and true partial pressure.The display shows the peak heights andalarm status of up to 10 masses. The electron multiplier can be independently set on or off for each mass. This allows the user to view minor species even in the presence of high total pressure. Multi-head operation is available whenwhen more than one RGAis needed foranalysis. Up to eight heads can be monitored simultaneously from the software.

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