Extech Instruments 470 - Manual (Page 16)

V5.0 5/04 16
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.