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temp") and the temperature of the analyzer's electronics chamber, indicated as
"warm chamber temp."
Precision Pulldown Menu
Click on this icon to select the precision displayed on the y-axis, between 0 and 4
digits of precision or "auto". The currently selected precision is displayed during
operation. This does not affect the precision of the saved data in the data log files
or results files.
Status Log Window
This window displays instrument status messages, in the following form:
"MM/DD/YYYY hh:mm:ss generic message text." These messages include all
messages sent to the DAS front panel display.
Reset Data Buffer Button
Press this button to clear the internal data buffer of the GUI (this clears the
current data traces from the graphs). This has the effect of clearing all data in the
data window. Pressing this button has no effect on any of the data log files stored
by the instrument.
Data Buffer Level Meter
The meter to the right of the Data Window indicates how much of the internal
memory of the GUI is used to retain historical data collected with the instrument.
There is an internal limit of a finite number of points. Once that number of data
points is collected, the buffer is full, and old data is removed from the buffer as
new data is collected. This buffer affects only the data displayed in the data
window, not the data stored in any files. This buffer is empty upon instrument
startup, and can also be emptied by pressing the reset data buffer button in the
lower-right-hand corner of the GUI.
Graph Zooming
To zoom the graph, simply drag the magnifying glass over the section to be
zoomed and click and hold the left mouse button. While holding down the left
button, move the mouse to create a box that covers the region of interest. When
the box is properly drawn, release the left button and boxed area will
automatically scale to fill the data window. To zoom back out, double click on the
Picarro G2302 Analyzer User's Guide
Rev. B 1/14/11
23
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