Extech EX810 Bedienungsanleitung Seite 12

Resistance Measurements
Note: Remove power before making resistance measurements
Insert the black test lead into the negative COM terminal and the red
test lead into the Q positive terminal.
Set the function switch to the Q position.
2.
Touch the test probe tips across the circuit or component under test.
3.
4. Read the resistance on the LCD display.
Capacitance Measurements
WARNING: To avoid electric shock, discharge the capacitor under test
before measuring. If "dlSC" appears in the display, remove
and discharge the capacitor.
I. Set the function switch to the capacitance position.
Insert the black test lead banana plug into the negative COM jack
2.
and the red test lead banana plug into the CAP positive jack.
Press MODE to zero any stray capacitance.
3.
4. Touch the test probe tips across the part under test.
Read the capacitance value in the display.
5.
The display will indicate the proper decimal point and value.
6.
Note: For very large values of capacitance measurement time can be
several minutes before the final reading stabilizes.
Frequency Measurements
1. Set the function switch to the V Hz Position.
Press and hold the MODE button to select the Frequency (Hz)
2.
function. "k Hz" will appear in the display.
3. Insert the black test lead banana plug into the negative COM jack
and the red test lead banana plug into the Hz positive jack.
4. Touch the test probe tips across the part under test.
5. Read the Frequency value on the display.
The display will indicate the proper decimal point and value.
6.
7. Press and hold the MODE button again to retum to the voltage mode
Hz
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Type K Temperature Measurements
(Model EX830 only)
I. Set the function switch to the K Temp position.
2. Insert the Temperature Probe into the negative COM and the
positive TEMP jacks, observing polarity.
Touch the Temperature Probe tip to the device under test.
3.
Continue to touch the part under test with the probe until the
reading stabilizes.
4. Read the temperature on the display. The digital reading will
indicate the proper decimal point and value.
WARNING: To avoid electric shock, be sure the thermocouple probe
has been removed before changing to another measurement function.
Note: An open input or a temperature over range the meter will display
"OL" and beep.
Note: See the "Temperature Units" paragraph to select OFor •C
Continuity Measurements
Insert the black test lead into the negative COM terminal and the red test lead into the
Q positive terminal.
2. Set the function switch to the position.
3. Use the MODE button to select continuity
MODE button is pressed.
4. Touch the test probe tips across the circuit or component under test.
5. If the resistance is < 400, a tone will sound.
Diode Test
Insert the black test lead banana plug into the negative COM jack and the red test
lead banana plug into the —N- positive jack
Turn the function switch to position. Use the MODE button to select the diode
2.
function if necessary (diode symbol will appear op the LCD when in Diode test mode)
3. Touch the test probe tips to the diode or semiconductor junction under test. Note the
meter reading
4. Reverse the test lead polarity by reversing the red and black leads. Note this reading
5. The diode or junction can be evaluated as follows:
If one reading displays a value (typically 0.400V to 0.900V) and the other
reading displays OL, the diode is good.
If both readings display OL the device is open.
If both readings are very small or 'O', the device is shorted.
The display icons will change when the
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