30
Measuring Duty Cycle
1. Connect the black test lead to the
"
COM
"
jack and the
red test lead to the
"
V Hz
"
jack.
2. Set the range switch to
Hz/DUTY
position.
3. Press the
"
"
button to select duty cycle
measurement, the display shows
"
%
".
4. Connect the test leads across the circuit to be measured.
5. The reading is duty cycle reading of the square wave
under test.
Note:
1. The scope of the voltage of the input signal should be :
4 ~ 10Vp-p.
2. After you remove the measured signal, its reading may
still remain on the display. Pressing the
"
"
button
twice zeroes the display.
Diode
1. Connect the black test lead to the
"
COM
"
jack and the
red test lead to the
"
V Hz
"
jack (Note:The polarity
of the red lead is positive
"
+
"
) .
2. Set the range switch to
"
"
position.
3. Press the "
Select
" button to make the display
show
"
".
