PDi DM-918, Руководство по эксплуатации

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operation.
3. To enable or disable the back light function, press and
hold the HOLD button for 2 seconds.
MAX/MIN BUTTON
The meter displays the maximum or minimum value of input
in the
Max/Min mode. When Max/Min is pressed for the first
time, the meter displays the maximum value. The meter
displays the minimum value when
MAX/MIN is pressed
again. When Max/Min is pressed for the third time, the
meter displays current value. The meter returns to normal
operation when
Max/Min is pressed and held for two
seconds. A value can be held in the Max/Min function by
pressing the
HOLD button.
DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC voltages if a motor on
the circuit is being switched ON or OFF. Large voltage
surges may occur that can damage the meter.
1. Set the function dial to the V position, the meter default
mode is the DC mode.
(“mV” will appear in the display). If
the meter does not default to DC mode, press the MODE
button to select the DC mode.
2. Insert the black test lead into the negative COM jack and
the red test lead into the positive V jack.
3. Touch the test probe tips to the circuit under test. Be sure
to observe the correct polarity (red lead to positive, black
lead to negative).
4. Read the voltage value on the display. The display will
indicate the proper decimal point and value. If the polarity
is reversed, the display will show a minus
( - ) symbol