Specifications

Display Modes 5-17
SRS Residual Gas Analyzer
1. Select the any axis by double-clicking on it or selecting X- or Y-Axis form the Graph
menu.
2. Enter the new desired limits for the axis in the From and To parameters.
3. Select OK.
Using Scan Data as Background
This mode is helpful in providing the user with a clean baseline after the background
data gets subtracted from newly acquired scans. This utility is available in Analog
mode, Histogram mode, Table mode, and P vs T mode.
To Enable the Background mode make sure the graph has valid data and the RGA head is
connected. In Analog and Histogram mode the scan must be allowed to finish at the
Stop mass before the data can be used as background. Use the Stop at End command (if
in continuous scan mode) to guarantee this condition.
To Enable the Background:
1. If a scan is in progress, issue the Stop at End command from the Scan menu or
yellow ‘End’ button.
2. Select Background Setup from the Utilities menu.
3. Click on the Enable check box to enable this mode.
4. Select the desired data subtraction mode.
5. Press OK.
The data gets cleared and the next scan will be the result of subtraction selected.
To Disable the Background:
1. Select the Background command from the Utilities menu.
2. Click on the Enable Background Mode check box to disable this utility.
3. Press OK.
When the background mode is disabled, the old background data reappears on the screen.