Fluke 15B - Testing Diodes; Measuring Capacitance; Measuring Temperature (17 B only)

Multimeters
Making Measurements
9
Testing Diodes
XW Warning
To prevent possible electrical shock, fire, or
personal injury, disconnect power and
discharge all high-voltage capacitors before
you measure resistance, continuity,
capacitance, or a diode junction.
1. Turn the rotary switch to
.
2. Press the YELLOW function button once to activate
Diode Test.
3. Connect the red test lead to the
 terminal and 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.
Measuring Capacitance
XW Warning
To prevent possible electrical shock, fire, or
personal injury, disconnect power and
discharge all high-voltage capacitors before
you measure resistance, continuity,
capacitance, or a diode junction.
1. Turn the rotary switch to
.
2. Connect the red test lead to the
 terminal and 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 15
seconds), read the capacitance value on the display.
Measuring Temperature (17B only)
1. Turn the rotary switch to .
2. Plug the thermocouple into the Meter’s
 and COM
terminals, insuring the thermocouple plug marked with
a + symbol is inserted into the
 terminal on the
Meter.
3. Read the temperature in degrees centigrade on the
display.