Instructions / Assembly

10
3. Press " " key to switch frequency and duty ratio, and long press it to
turn on or turn off VFD function.
Attention：
1. Before turning the function rotary switch, leave the measurement probe
from the circuit under measurement.
2. When the screen only displays "OL", it means that the range has been
exceeded and the measurement should be terminated.
3. Do not input AC voltage with effective value higher than 600V, otherwise
there is a risk of damaging the instrument.
4. Pay special attention to avoid electric shock when measuring high
voltage.
DC voltage measurement
1. Insert the red probe into the " " jack and the black probe into the
jack.
2. Turn the knob switch to the " " position, and connect the probe to the power
supply or load to be measured. The polarity and measured value of the contact
terminal of the red probe will be displayed on the screen.
Attention：
1. Before turning the function rotary switch, leave the measurement probe
from the circuit under measurement.
2. When the screen only displays "OL", it means that the range has been
exceeded and the measurement should be terminated.
3. Do not input AC voltage with effective value higher than 600V, otherwise
there is a risk of damaging the instrument.
4. Pay special attention to avoid electric shock when measuring high
voltage.
mV gear voltage measurement