20
4.7
AC/DC voltage measurement
Turn rotary switch to AC/DC voltage level, press
"
" button to switch between AC and DC
voltage measurement mode, and connect the probe
to the measured signal.
In DC mode, the red probe is connected to the
positive pole of the measured signal and the black
probe is connected to the negative pole of the
measured signal.
When measuring AC voltage, press "
"
button to toggle the display of the frequency and
duty cycle of the measured voltage. Press and hold
the "
" button for more than 2 seconds to start
the VFD measurement function.
Note: The frequency can only be displayed when
the measured value in VFD mode is greater than
about 70V.
