Craftsman 19741 - Detailed Meter Specifications; Frequency and Temperature Measurement Details; Measurement Function Specifications

DIODE TEST
WARNING: To avoid electric shock, do not test any diode that
has voltage on it.
1. Tur the rotary switch to the QQ -Pt *))) CAP position.
Insert the black test lead banana plug into the negative (COM)
jack and the red test lead banana plug into the positive (VQ)
jack.
3. Push the mode button to indicate >} on the display.
4. Touch the test probes to the diode under test. Typically for a
normal diode, forward voltage will indicate 0.4V to 0.7V.
Reverse voltage will indicate “OL”. Shorted devices will
indicate near OV and an open device will indicate “OL” in both
polarities.
CAPACITANCE MEASUREMENTS
WARNING: To avoid electric shock, discharge the capacitor
under test before measuring.
1. Set the function switch to the Q Pt *))) CAP position.
2. Push the mode button to indicate nF on the display.
3. Insert the black lead banana plug into the negative (COM) jack
and
insert the red test lead banana plug into the positive
(VQTemp) jack.
4. Press the ZERO key to null the meter display.
Touch the test probe tips to the capacitor you wish to check.
6. Read the capacitance value on the display.
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FREQUENCY or % DUTY CYCLE MEASUREMENTS
+
2
3.
4.
5.
Turn the rotary switch to the Volts Hz % position.
Insert the black test lead banana plug into the negative (COM)
jack and the red test lead banana plug into the positive (VQ)
jack.
Select Hz or % with the HZ/% button.
Touch the test probe tips to the circuit under test.
Read the frequency on the display.
TEMPERATURE MEASUREMENTS
WARNING: To avoid electric shock, disconnect both test
probes from any source of voltage before making a
temperature measurement.
Turn the rotary switch to the Temp position.
Insert the Temperature Probe into the negative (COM) and the
(VQTemp) jacks, making sure to observe correct polarity.
Select °C or °F with the MODE button.
Touch the temperature probe head to the part whose
temperature you wish to measure. Keep the probe touching
the part under test until the reading stabilizes.
Read the temperature on the display.
Warning: To avoid electrical shock, be sure the thermocouple
has been removed before changing to another measurement
function.
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