Extech Instruments EMF450 Quick Start Manual page 5

Low Frequency EMF (Magnetic) Measurements
1. Hold the meter steady, at arm's length, and point its face toward
the electromagnetic field.
2. The meter displays the electromagnetic readings of individual
fields (XYZ) and the aggregated magnetic field. The magnetic
and electric fields are also shown on the bar graph.
3. Make several measurements at various locations.
4. The sensor orientation is represented by the arrows in the figure,
below
Note: It is common to pick up radiation from other nearby sources.
Apart from active sources, components connected to a source may
also act as radiators (cables in diathermy equipment, for example).
Note: Metallic objects, within the field, can amplify the field from a
distant source.
RF Strength
1. Hold the meter steady, at arm's length, and point its face toward
the RF field.
2. The RF signal strength will display, with the units of measure as
set in the menu.
3. The RF strength display area will also show a histogram and a
bar graph indication.
Main Menu
1. Press MENU (center) to open the main menu (shown below).
2. Press SELECT (right) to cycle through the list.
3. Press ENTER (left) to set the selected option.
4. Press SELECT to choose the desired setting.
5. Press ENTER to confirm the setting, the meter will exit the menu
unless there are more settings required for the given parameter
(SOUND setting, for example); in which case, repeat the steps
above.
6. From main menu, shown below, press MENU to exit the menu.
#NAS100173; r. AC/94338/94343; en-US
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