Martel Electronics BetaGauge 3II - Manual (Page 67)

User Preferences 4-12
Procedure
To specify the date format, do the following:
1. Use the Menu key to locate the Setup menu item
Format, then press the corresponding function key.
The lower portion of the LCD will appear as shown
below:
2. The first three menu items allow you specify the
date format you want to use. Press the function key
corresponding to the menu item dmy, mdy, or ymd,
as appropriate.
NOTE: Notice how the display date in the upper
left portion of the LCD changes as you
select different formats.
3. Press the CLR key to return to the Setup menu.
Format Date time
dmy mdy ymd 12Hr