Pro's Kit MT-3209 - 4.9 Frequency Measurement; 4.10 Resistance Measurement; 4.11 Diode test

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4.9 Frequency Measurement
 Pass V position:
1） Turn the switch to “ V” and press “FUNC” to choose ACV, and then press “Hz” to
choose Hz.
2） Connect the black test lead to the COM jack and the red lead to the V/ jack.
3） Measure the frequency value of the circuit under test with the other two ends of the
test leads and “Hz” the measured value on LCD screen.
 Pass AC A position（The signal current must be ≥6A）:
1） Turn the rotary switch to the appropriate position 60A or 600A, then press the “Hz”
key to choose Hz .
2） Hold the trigger, open the clamp head and clamp one cable of the measured
circuit.
3） When measured signal ≥6A AC current, the LCD of the meter displays the
measured Hz value.
4.10 Resistance Measurement
Ohm is the unit of electric resistance ().
The measuring ranges of electric resistance of this meter are 600, 6k, 60k, 600k,
6M and 60M,
Measurement of electric resistance
1） Turn the rotary switch to the  position, press “FUNC” to choose .
2） Connect the test leads to COM input socket and V/ input socket respectively.
3） Use another two ends of the test lead to measure the electric resistance of the circuit
to be measured.
4） Read the measured electric resistance value on LCD screen.
Notes:
 The measured value of the electric resistance of the circuit differs a bit from the rated
value of the electric resistance.
 To ensure measurement accuracy, in attempting a low resistance measurement, first
put two lead-shaped meters in short circuit and capture the resistance reading of
these short circuits. Then subtract the aforesaid reading from the measured
resistance.
 When the meter is in open circuit, the display unit will show “O.L” that indicates the
measured value is over the measuring range.
4.11 Diode test
1） Turn the rotary switch to the  position and press “FUNC” to choose .
2） Connect the test leads to COM input socket and V/ input socket respectively.