Measure Ac Or Dc Current; Measure Resistance - Fluke 15B+ User Manual

15B+/17B+/18B+
Users Manual

Measure AC or DC Current

To prevent possible electrical shock, fire, or personal injury, remove circuit power
before you connect the Product in the circuit when you measure current. Connect
the Product in series with the circuit.
To measure ac or dc current:
1. Turn the rotary switch to
2. Push D to toggle between ac or dc current measurement.
3. Connect the red test lead to the A or mA μA terminal based on the current to be measured
and connect the black test lead to the COM terminal. See
4. Break the circuit path to be measured. Then connect the test leads across the break and
apply power.
5. Read the measured current on the display.

Measure Resistance

To measure resistance:
1. Turn the rotary switch to
measured.
2. Connect the red test lead to the
shown in Figure
3. Measure the resistance by touching the probes to the desired test points of the circuit.
4. Read the measured resistance on the display.
6
, , or .
A m N
Figure 2. Measure AC and DC Current
. Make sure power is disconnected from the circuit to be
Q
terminal and the black test lead to the COM terminal, as
W
3.
XW Warning
AC
Figure 2.