2.
Press MODE-button to select continuity-function (
)
3.
Plug the black test lead into the COM-terminal and the red test lead into the mV/
-terminal.
3.
Remove power from the circuit.
4.
Connect the test lead tips to the object to be measured.
Note:
1. The buzzer will sound, if the measured resistance from the components is below about 30 ohms.
2. When you perform continuity test, the displayed resistance value of a resistor in a circuit may be
different from the actual value of the resistor because the meter's test current flows through all
possible paths between the probe tips.
3. In continuity test mode, the RANGE button is disabled.
6.7. Measuring Resistance
Warning !!
Never connect the test leads to a source of voltage, when you have selected the ohms function and
plugged the test lead jack into V/
terminal.
Be sure, that the circuit under test has all power removed and any associated capacitors are fully
discharged before you make a resistance measurement.
Follow these steps to measure resistance.
1. Set Function-Switch to the
-position
2. Press MODE-button to select resistance-measurement-function (
)
3. Plug the black test lead into the COM-terminal and the red test lead into the mV/
-terminal
4. Connect the test leads to the object to be measured.
Notes:
*
The resistance in the test leads can diminish the accuracy on the lowest 220 Ohm range. The
error is usually 1 to 0,2 ohms for a standard pair of test leads. To determine the error, short the
test leads together and read the resistance of the test leads.
*
When measuring resistance, be sure, that the contact between the test leads and the object is
good. Dirt, oil, solder flux or other foreign matters can cause incorrect readings.
*
If the measured resistance value exceeds the max. value, "OL" will be displayed indicating
overload.
*
For resistance of approx. 2 MOhm and above, the display might take a few seconds to stabilise.
This is normal for high resistance readings.
*
During resistance measurements, the present value is in the main display, the measured value
taken 1 second earlier in the upper secondary display, the measured value taken 2 seconds
earlier in the middle secondary display and the measured value taken 3 seconds earlier in the
lower secondary display.
-35-
