Brymen BM039F User Manual page 8

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diode. The digital display shows over-range if the diode is good. Any other readings
indicate the diode is resistive or shorted (defective).
●Beep-Alert & BeepLit indication: When the display reading drops across 0.850V,
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the meter alerts a short beep sound to signal a reasonable forward voltage drop of
common diodes. However, if the reading further drops below 0.100V, the meter gives a
continuous beep sound together with the display backlight flashing to indicate a shorted
diode or a complete wire. It is similar to that of BeepLit Continuity function but
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BeepLit Diode, instead, is based on voltage threshold to indicate complete wires.
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CAUTION
Using Resistance, BeepLit Continuity or BeepLit Diode function in a live circuit
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will produce false results and may damage the meter. In many cases, the
component(s) under test must be disconnected from the circuit to obtain an accurate
measurement reading.
EF-Detection of Electric Field
Defaults at EF-H, the High sensitivity. The meter displays "EF-H" when it is ready. If it
is too sensitive for your applications, press the SELECT button momentarily to select
EF-L, the Low sensitivity. The detected Electric Field strength is indicated as a series
of bar-graph segments on the display plus variable beep sounds.
●Non-Contact EF-Detection (NCV): An antenna is located along the top-left end of
the Fork-clamp, which detects the electric field surrounds energized conductors. It is
ideal for tracing live wiring connections, locating wiring breakages and to distinguish
between live and earth connections.
●Probe-Contact EF-Detection (Single-pole): For more precise indication of live
wires, such as distinguishing between Live and Ground connections, use one single
test probe to test via terminal COM for direct metal contact probing to achieve the most
distinctive indications.