MA220-EU-EN V1.5 7/09
7
Diode Test
1. Turn the rotary switch to the
•))) CAP
position.
2. Insert the black test lead banana plug into the negative (COM) jack and the red test lead
banana plug into the positive (V
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 0V and an open device will indicate “OL” in both polarities.
Capacitance Measurements
Warning
: To avoid electrical shock, disconnect power to the unit under test and
discharge all capacitors before taking any capacitance measurements. Remove the
batteries and unplug the line cords.
1.
Set the function switch to the
•))) 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 (V
Temp) jack.
4.
Press the ZERO key to null the meter display.
5.
Touch the test probe tips to the capacitor you wish to check.
6.
Read the capacitance value on the display.
Frequency or % Duty Cycle Measurements
1.
Turn the rotary switch to the
Volts Hz %
position.
2.
Insert the black test lead banana plug into the negative (COM) jack and the red test lead
banana plug into the positive (V
jack.
3.
Select Hz or % with the
HZ/%
button.
4.
Touch the test probe tips to the circuit under test.
5.
Read the frequency on the display.
Temperature Measurements
1.
Turn the rotary switch to the
Temp
position.
2.
Insert the Temperature Probe into the negative (COM) and the (V
Temp
jacks, making
sure to observe correct polarity.
3.
Select °C or °F with the
MODE
button.
4.
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.
5.
Read the temperature on the display.
Warning
: To avoid electrical shock, be sure the thermocouple has been removed before
changing to another measurement function.
Auto/Manual Ranging
The meter turns on in Autoranging mode. Press the
RANGE
button to enter manual
ranging. Each press of the range button will step to the next range as indicated by the units
and decimal point location. Press and hold the
RANGE
button for two seconds to return to
Autoranging mode.
Note
: Manual ranging does not function in AC Current or Diode and Continuity check
functions. In Temperature function, it will change the resolution from 0.1° to 1°.
