5.Use the Multimeter
7. The reference value of the relative measurement.
8. Range of measuring current: mA or 10A.
9. AC or DC when measuring current or voltage.
Making Multimeter Measurements
Measuring AC or DC Current
(1) Push DMM button on the front panel. Select Current in the bottom menu,
select it again to switch between ACA (AC current) or DCA (DC current).
(2) Insert the current ext module provided with the oscilloscope into the COM
terminal and V/Ω/C terminal on the top of the oscilloscope.
(3) Connect the black test lead to the COM terminal on the top of the oscilloscope.
Connect the red test lead to the mA terminal.
(4) Turn off the power of the measured circuit. Discharge all high- voltage
capacitors.
(5) Disconnect the circuit path to be tested. Connect the black test lead to one side
of the circuit (with a lower voltage); connect the red test lead to the other side
(with a higher voltage). Reversing the leads will produce a negative reading,
but will not damage the multimeter.
(6) Turn on the power of the measured circuit, and read the display.
(7) Turn off the power of the measured circuit and discharge all high-voltage
capacitors. Remove the test leads and restore the circuit to the original
condition.
Measuring AC or DC Voltage
(1) Push DMM button on the front panel. Select Current in the bottom menu,
select it again to switch between ACA (AC current) or DCA (DC current).
(2) Connect the black test lead to the COM terminal on the top of the oscilloscope
and the red test lead to the V/Ω/C terminal.
(3) Probe the test points and read the display.
Measuring Resistance
(1) Push DMM button on the front panel. Select in the bottom menu, select
R.
(2) Connect the black test lead to the COM terminal on the top of the oscilloscope
and the red test lead to the V/Ω/C terminal.
(3) Probe the test points and read the display.
Testing Diodes
(1) Push DMM button on the front panel. Select in the bottom menu, select
it until switching to .
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