Maxwell 25328 User Manual page 4

EN
User Manual
Resistance Measurement
To measure resistance:
1.: Set the rotary switch to the "Ω" range.
2.: Connect the black and red test leads to the
"COM" and "VΩHz" terminals.
3.: Connect the test leads to the circuit being
measured.
4.: Read the displayed value on the instrument's
screen.
NOTE: On 40MΩ range, the meter may take a few
seconds to stabilize reading. This is normal for
high resistance measuring. The sign "OL" will be
displayed on the over-range condition.
Warning: To avoid electrical shock and/or
damage to the instrument, disconnect circuit
power and discharge all high-voltage capacitors
before measuring resistance
Diode Test
To test a diode out of a circuit:
1.: Set the rotary switch to "Ω" range.
2.: Press the "SELECT" key once to activate Diode
Test.
3.: Connect the black and red test leads to the
"COM" and "Ω" terminals.
4.: Place the red test lead on the component's
anode and place the black test lead on the
component's cathode.
5.: The meter will show the approx. forward
voltage of the diode.
The sign "OL" will be displayed on a reverse
and changed condition.
Warning: To avoid electrical shock and/or
damage to the instrument, disconnect circuit
power and discharge all high-voltage capacitors
before testing diodes.
Capacitance Measurement
To measure capacitance:
1.: Set the rotary switch to "
2.: Connect the black and red test leads to the
"COM" and "Ω" terminals.
3.: Connect the test leads to the capacitor being
measured and read the displayed value on
the screen.
Warning: To avoid electrical shock and/or
damage to the instrument, disconnect circuit
power and discharge all high-voltage capacitors
before measuring capacitance.
NOTE: The meter may take a few seconds (e.g.:
200µF range 30 seconds) to stabilize reading.
This is normal for high capacitance measuring.
To improve the accuracy of measurements less
than 50nF, subtract the residual capacitance of
the Meter and leads.
Frequency and Duty Cycle Measurement
1.: Set the rotary switch to "Hz" range.
2.: Connect the black and red test leads to the
"COM" and "Ω" terminals.
3.: Measure AC voltage or AC amperage.
4.: To make a Duty Cycle Measurement, press the
"Hz/DUTY" key.
5.: Read the displayed value on the screen in %.
NOTE: It is preferable to use shield cable for
measuring small signal for the best measurement.
Temperature Measurement
1.: Set the rotary switch to " º C" range!
2.: Connect the K type temperature measuring
sensor to the instrument, and connect the red
test leads to the "mA" terminal, the black to
the "COM" terminal. (TEMP. terminals +-)
3.: Place the temperature probe to the object
or
measured value can be seen on the display.
Warning: To avoid electrical shock and/or
damage to the instrument, never place the
sensor to electric environment and do not
measure in microwaves.
Current Measurement
To measure current:
1.: Turn off the power to the circuit. Discharge all
high voltage capacitors.
2.: Set the rotary switch to the "μ A, mA or A"
range.
3.: Press the "SELECT" key to select "DC or AC"
" range.
measuring mode.
4.: Connect the black test lead to the "COM"
terminal and the red test leads to the "mA"
terminal for a maximum of 400mA. For a
maximum of 10A, move the red test lead to
the "A" terminal.
5.: Break the circuit path to be tested. Touch the
black probe to the more negative side of the
environment being measured. The