EX420-EU_ENG
V3.1
6/09
10
CAPACITANCE MEASUREMENTS
WARNING:
To avoid electric 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 rotary function switch to the green
position.
2. Insert the black test lead banana plug into the negative
COM
jack.
Insert the red test lead banana plug into the positive
jack.
3. Touch the test leads to the capacitor to be tested.
4. Read the capacitance value in the display
FREQUENCY MEASUREMENTS
1.
Set the rotary function switch to the green “Hz” position.
2.
Insert the black lead banana plug into the negative
COM
jack and the red test lead banana plug into the positive
Hz
jack.
3.
Touch the test probe tips to the circuit under test.
4.
Read the frequency on the display.
% DUTY CYCLE
1.
Set the rotary function switch to the “Hz” position.
2.
Insert the black lead banana plug into the negative
COM
jack and the red test lead banana plug into the positive
Hz
jack.
3.
Press the SELECT key momentarily to select % in the
display.
4.
Touch the test probe tips to the circuit under test.
5.
Read the % duty cycle on the display.
