GW Instek GDM-356 - Manual (Page 17)

2. Insert the red test lead into the
µ
AmA or 20A terminal and
the black test lead into the COM terminal.
3. Set the rotary switch to an appropriate measurement
position in A range.
4. Break the current path to be tested. Connect the red
test lead to the more positive side of the break and
the black test lead to the more negative side of the
break.
5. Turn on power to the circuit. The measured value
shows on the display.
Measurement Operation(5)
Note
l If the value of current to be measured is unknown,
use the maximum measurement position (20A) and
20A terminal, and reduce the range step by step until
a satisfactory reading is obtained.
l When current measurement has been completed,
disconnect the connection between the testing leads
and the circuit under test.
D. AC Current Measurement (see figure 6)
( figure 6)
17
red black
GDM-356