Capacitance Measurements; Frequency Measurements; Duty Cycle - Extech Instruments 430 User Manual

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
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.
jack.
14 V01.02.01 7/04