METREL MD 9880, Руководство пользователя

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METREL MD 9880 DMM Setup and Measurements
10
4. DMM Setup and Measurements
DC Voltage Measurements
CAUTION:
Do not measure DC voltages on a motor while the circuit is being
switched ON or OFF. Large voltage surges may occur that can
damage the meter.

Set the rotary function switch to the VDC position.

Insert the black test lead banana plug into the negative COM
jack.

Insert the red test lead banana plug into the positive V jack.

Read the voltage in the display.
AC+DC Voltage Measurements
CAUTION:
Do not measure DC voltages on a motor while the circuit is being
switched ON or OFF. Large voltage surges may occur that can
damage the meter.

Set the function switch to the VDC position.

Insert the black test lead banana plug into the negative COM jack. Insert the red
test lead banana plug into the positive V jack.

Press the MODE key to switch the V AC+DC Voltage
function

Read the AC+DC voltage in the display.
AC Voltage Measurements
WARNING: Risk of electrocution. The probe tips may not
be long enough to contact the live parts inside some
240V outlets for appliances if the contacts are recessed
deep. Therefore, the meter may read 0 on a live outlet.
Make sure the contact is made before assuming no
voltage is present.
CAUTION:
Do not measure DC voltages on a motor while the circuit
is being switched ON or OFF. Large voltage surges may
occur that can damage the meter.

Set the rotary function switch to the VAC position.

Insert the black test lead banana plug into the negative COM jack. Insert red test
lead banana plug into the positive V jack.

Read the voltage in the main display
Frequency Measurements

Set the rotary function switch to the Hz% position.

Insert the black test lead banana plug into the negative COM jack. Insert the red
Figure 1: Measuring
voltage, resistance,
capacitance, frequency
and diode
Figure 2: Screen when
measuring AC and DC voltage