AstroAI 759974998225 Digital Multimeter TRMS 6000 Counts Volt Meter Ohmmeter Auto-Ranging Tester; Accurately Measures Voltage Current Resistance Diodes Continuity Duty-Cycle Capacitance Temperature for Automotive

USER MANUAL - Page 11

For 759974998225.

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600uF 100nF
20uF 10uF
Overload Protection: F0.4A/600V fuse
Open circuit voltage: about 0.5V
Frequency (Auto Ranging)
Range Accuracy
0~60MHz ±(1.0% + 5)
Overload Protection: 250V DC/AC RMS
OPERATING INSTRUCTIONS
Voltage Measurement
1. Connect the black test lead to the “COM” jack and the red test lead to the “INPUT ” jack.
2. Set the function switch to V or V range. Choose either Auto or Manual range using
the “Range” Button.
3. In manual range, if the voltage magnitude to be measured is unknown beforehand,
select the highest range.
4. Connect the test leads to the source or load to be measured.
5. Read LCD display. The polarity of the red lead connection will be indicated when making
a DC measurement.
Note:
a. When measuring small ranges, the multimeter’s display will sometimes show an
unstable result if the test leads are not connected to the load being measured. This is
normal and will not affect measurements.
b. In manual range, when the multimeter shows “OL” or Over Range, you must select a
higher range in order to get results.
c. To avoid damage to the meter, do not measure voltage exceeding 600V DC or 600V AC
CATIII.
Current Measurement
1. Connect the black test lead to the “COM” jack. If the current to be measured is less than
600mA, connect the red test lead to the “mA” jack. If the current is between 600mA and
10A, connect the red test lead to the “10A” jack instead.
2. Set the function switch to necessary range (µA, mA, or A). If the current magnitude to be
measured is not known beforehand, set the function switch to the highest range and
then reduce it range by range until a satisfactory resolution is obtained.
3. Select DC current measurement or AC current measurement with the “Select” Button.
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