Model 3440 3–3
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The gauge’s control panel contains the keypad, power switch,
display, and USB port, battery charging indicator, charger
connector, and the RS-232 port.
The gauge is equipped with an internal beeper to verify
keystrokes. If a beep is not heard when a key is pressed, the
keystroke was not recognized and should be repeated.
Table 1 on page 3–4 provides a description of each key.
NOTE
The gauge will automatically turn off after five hours
if no keys are pressed.
5LHK`
$ 0
3Q752? /(5
3L 6 7$ 57!
POWER SWITCH
BATTERY
CHARGING
INDICATOR
CHARGER
CONNECTOR
RS-232 PORT
USB PORT*
Figure 7. Model 3440 Keypad
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