User Manual

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10. Capacitance Measurement (Picture 10)
Note:
If the measured capacitor is short-circuited or the capacitance exceeds the
maximum range, the LCD will display “OL”.
The analog bar pointer is disabled in capacitance measurement mode. When
measuring capacitance >600μF, it may take some time to steady the readings.
Before measuring, fully discharge all capacitors (especially high-voltage
capacitors) to avoid damage to the meter and user.
After completing the measurement, disconnect the test leads from the circuit
under test.
11.Frequency/Duty Ratio Measurement (Picture 11)
Picture 11
Picture 10
UT205E/UT206B/UT207B/UT208B User Manual UT205E/UT206B/UT207B/UT208B User Manual
3) Connect the red probe with the diode anode, and black with the diode cathode.
4) Read the approximate forward voltage of the diode on the display. For silicon
PN junction, the normal value is generally about 500~800 mV.
Note:
If the diode is open or its polarity is reversed, the LCD will display “OL”.
Before measuring the diode online, switch off the power supply of the circuit,
and fully discharge all capacitors.
Use caution when working with voltage above AC 30Vrms, 42Vpeak or DC 60V.
Such voltage poses a shock hazard.
After completing the measurement, disconnect the test leads from the circuit
under test.
1) Insert the red test lead into the , or jack, and black into the
COM jack.
2) Turn the function dial to the or position, short press the SELECT button
to switch to capacitance measurement, and connect the test leads with both
ends of the measured capacitance in parallel.