Stanford Research Systems RGA100, Operating Manual And Programming Reference

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1-14 Running the SRS RGA System
SRS Residual Gas Analyzer
Head Menu. A green status LED on the back panel of the ECU box indicates the
emission status of the filament at all times and it provides the fastest way to
verify if the filament is emitting electrons.
6. Perform an analog scan under the current scan conditions:
Analog mode is the spectrum analysis mode common to all Residual Gas Analyzers.
The X-Axis represents the mass range displayed in the Mass Spec Parameters menu.
The Y-Axis represents the ion current amplitudes of every mass increment measured.
RGA starts in the Analog mode of display by default. The scan range defaults to 1 to
50 amu.
x
Select Start from the Scan menu, or simply click on the toolbar’’s GO button ,
to trigger an analog scan.
x
After a small delay, the analog scan data starts to be displayed on the screen.
x
Rescale the Y-Axis clicking on the Auto Scale button or selecting Auto
Scale from the Graph Menu.
x
Change the Y-Axis to a logarithmic scale selecting the Log/Linear option of
Select Scale in the Graph menu item.
Please refer to the RGA Windows chapter of this manual, and the RGA On-Line Help
files, provided with the program disks, for detailed information on all the features,
procedures, and commands available in the RGA program.
Consult the RGA General Operation chapter of this manual for a general overview of the
SRS RGA and its basic operating modes.