PeakTech 4390 Bedienungsanleitung Seite 71

When you short the test leads in the 600 Ω range, your meter
display a small value (no more than 0.3 Ω). This value is due to
your meter´s and test leads internal resistance. Make a note of
this value and subtract it from small resistance measurements
for better accuracy.
5.9. Frequency measurement
1. Set the function switch to the "Hz/Duty" position.
2. Insert the black test lead banana jack into the negative COM
jack and the red test lead banana plug into the positive
V/Ω/Hz jack.
3. Touch the test probe tips to the circuit under test.
4. Read the frequency in the display. The digital reading
indicate the proper decimal point, symbols (Hz, kHz, MHz)
and value.
5.10. Capacitance measurements
Warning:
To avoid electric shock, disconnect power to the unit under test
and discharge all capacitors before taking any capacitance
measurements. Remove the batteries and unplug the line cords.
1. Set the function switch to the "
2. Insert the black test lead into the negative COM jack and the
red test lead into the positive V/Ohm/
3. Touch the test leads to the capacitor to be tested. The
display will indicate the proper decimal point, value and
symbol.
" position.
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