2DI ThermaViewer, Manual

Page: 23 / 36

Features and Operation
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7. If the roll-over option in the Systems Parameters menu is set to “on,” the oldest data will be
overwritten. If the roll-over option is set to “off,” no data will be added once the ThermaViewer’s
memory is full of collected values.
Sleep Mode
In the Sleep Mode the display (LCD) is asleep or blank. The ThermaViewer goes into this mode
after a user-defined, preset time has elapsed and no button has been pushed. The default for
this mode is zero -- in other words, when zero is selected, the ThermaViewer display will never
enter a
Sleep Mode . Pressing the ENT key awakens the display.
Trace Mode
The Trace Mode retrieves detailed data about a specific event, essentially providing the viewer
with a “snapshot” in time. When the Trace Mode key is pressed, a double arrow appears at the
bottom of the LCD (see illustration at left). The double arrow may be scrolled left or right by
pressing the left or right arrow keys. Just as in the
Active Mode , the Zoom In/Zoom Out keys may
be used to reveal more detailed information. The date, time, and temperature displayed at the
bottom of the screen reflect the column of data to which the arrow points.
(continued)