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DPI 740 User Manual
3 Operation
3.1 General (Figure 3-1)
The instrument is switched on by the ON/OFF push-button and
powers up in the last selected mode and units of
measurement. The instrument "times-out" after a period of
one minute if no push-button selections are made. To keep
the instrument in the powered-up state the ON/OFF and MODE
push-buttons should be pressed together. The display briefly
shows a "Timeout Disabled" message. Pressing the MODE
push-button steps through the three pressure measurement
modes. Pressing the SET push-button steps through the set-
up menu (described in 3.3).
3.2 Measurement Modes (Figure 3-1)
Selecting the MODE push-button, changes the measurement
mode between:
Local (QFE unprocessed pressure at the pressure port).
Sea (QFF calculated pressure at sea level).
Altitude (calculated height from pressure datum).
Selecting the push-button F2 changes the units of pressure
measurement, continuous pressing steps between three
preselected units, the display shows the units for each meas-
urement mode.
low pass
tare
filter
+
battery
condition
selected
16 character
mode
status line
function selection
mode selection
Figure 3-1 Instrument front panel
-
F1
MODE
F2
SET
Set-up menus
ON/OFF control
K0200 Issue No. 1
11
selected
units
function
selection
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