3–4
Table 1. Model 3440 Keypad Functions
Store the most recent data in the current
project file.
Display the most recent data.
Select or create a project file and view,
output, or erase project data file.
Display gauge status information.
Display the gauge Setup menu.
Enable, disable, or change a density,
moisture, or trench offset.
Select, enter, or disable a Gmb (Marshall),
Proctor, or Gmm (Voidless density) value.
Select Asphalt or Soil measurement mode.
Manually toggle the LCD and keypad
backlights on and off.
Respond yes to yes/no questions.
Respond no to yes/no questions.
Return the display to the Ready screen
without storing or updating the data.
Enter numbers and access menu options.
Moves cursor back one space.
Scroll through menu options or view screens.
Enter letters. Access these keys by first
pressing ¢ALPHA LOCK².
Accept data entry or begin a measurement.
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