8
4. The typical voltage drop should be about 0.6V for silicon diode or 0.3V for
germanium diode. If the diode is reverse biased or there is an open circuit the
reading displayed will be ‘OL’.
4.7. Frequency Measurement
1. Insert the black and red test leads into the C
CO
OM
M and V
V
Ω
Ω
H
Hz
z input terminals
respectively.
2. Set the rotary dial to ‘H
Hz
z’ position (default auto range).
3. Connect the test leads across the source or load under measurement. The
polarity of the red lead connection is positive ‘+’.
4. Read the measure result from the display.
N
NO
OT
TE
E::
• The signal amplitude must also be greater than the sensitivity level.
• Determine that the amplitude level of the signal to be measured is not greater
than the input voltage limit.
4.8. Measuring Frequency From Clamp
1. Set the rotary dial to
H
Hz
z
position (default auto range).
2. Press the trigger to open transformer jaw and to clamp one conductor only,
making sure that the jaw is firmly closed around the conductor.
3. Read the measure result of frequency of AC current flowing through the
transformer jaw from the display.
N
NO
OT
TE
E::
• Frequency range: 40Hz to 400Hz (> 20A ).
c
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