Prokit's Industries MT-3109 - Manual (Page 13)

MT-3109 AC/DC Digital Clamp Multimeter
F. Duty Cycle Measurement (see figure
8) F. Duty Cycle Measurement (see figure
8)
Warning
To avoid harms to you or damages to
the Meter from electric shock, do not
attempt to measure voltages higher
than 600V AC/DC, although reading
may be obtained.
The duty cycle range is: 0.1% ~99.9%.
To measure duty cycle, connect the Meter as follows:
1.
Insert the red temperature probe into the Hz Duty%
terminal and the black temperature probe into
the COM terminal.
2. Set the rotary switch to Hz and press RELA to select Duty
Cycle measurement mode.
3. Connect the test leads across with the object being
measured. The measured value shows on the display.
Note
 When duty cycle measurement has been completed,
disconnect the connection between the testing leads and
the circuit under test, and remove the testing leads away
from the input terminals of the Meter.
G DC/AC Current Measurement (see figure
9)
The measurement ranges of current are:
40.00
and 400.0
To measure current, do the following:
1. Set the rotary switch to 40
or
400 . DC measurement mode is a
default. Presses SELECT to switch
between DC and AC measurement mode.
12 2
2. Hold the Meter tight, don't release. The Hall
components are very sensitive not only to
the magnet but also to heat and machines reaction force. Any
shock will cause the changing in reading in the short time.