INITIAL RECEIVER CONFIGURATION

Display depth units (inches, feet and inches, or centimeters) may be

changed while holding and pressing . For each press, one of three units will display. To change the passive Power frequency, press and

hold then press to toggle between 50 or 60 Hz as displayed in the lower left corner of the display.

To change the Null bar graph display mode, press and hold then

press to toggle between normal Null bar graph display (Null flag will flash) and inverse Null bar graph display (Null flag is solid). See section About Trace Modes (page 11) for further information.

RECEIVER BATTERY TEST

Battery Test

Indicator

Battery Level

Mark

The Receiver batteries are tested for two seconds every time the unit is

turned on. The time interval can be extended by pressing and holding . During the battery test, the bar graph should extend to the right of the battery level mark, otherwise replace the batteries.

Note: When batteries are low, the battery test indicator will flash.

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3M 2250E, 2273E manual Initial Receiver Configuration, Receiver Battery Test