Test Diodes; Measure Capacitance; Measure Temperature (17B+ Only) - Fluke 15B+ User Manual

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

Test Diodes

 Caution
To prevent possible damage to the Product or
to the equipment under test, disconnect
circuit power and discharge all high-voltage
capacitors before you test diodes.
1. Turn the rotary switch to
2. Push  twice to activate Diode Test.
3. Connect the red test lead to the
black test lead to the COM terminal.
4. Connect the red probe to the anode side and the black
test lead to the cathode side of the diode being tested.
5. Read the forward bias voltage value on the display.
6. If the polarity of the test leads is reversed with diode
polarity, the display reading shows . This can be
used to distinguish the anode and cathode sides of a
diode.
12

.

terminal and the

Measure Capacitance

 Caution
To prevent damage to the Product,
disconnect circuit power and discharge all
high-voltage capacitors before you measure
capacitance.
1. Turn the rotary switch to
2. Connect the red test lead to the
black test lead to the COM terminal.
3. Touch the probes to the capacitor leads.
4. After allowing the reading to stabilize (up to 18
seconds), read the capacitance value on the display.

Measure Temperature (17B+ only)

To measure temperature:
1. Turn the rotary switch to .
2. Plug the thermocouple into the
terminals of the Product.
Ensure that the thermocouple plug marked with "+" is

inserted into the terminal on the Product.
3. Read the temperature on the display.
Push  to switch between °C and °F.
4.

.

terminal and the

and COM