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MI 3100 s, MI 3100 SE EurotestEASI Measurements
37
Figure 5.11: Tip commander and 3-wire test lead applications
Continuous resistance measurement procedure
Select R LOW function using the function selector switch.
Set sub-function to CONTINUITY using UP / DOWN keys.
Enable and set the limit (optional).
Connect test cable to the instrument.
Compensate test leads resistance (if necessary, see section 5.3.3 Compensation of test
leads resistance).
Disconnect from mains supply and discharge the object to be tested.
Connect test leads to the tested object (see Figure 5.11).
Press the TEST key to begin performing a continuous measurement.
Press the TEST key to stop measurement.
After the measurement is finished store the result by pressing the MEM button (MI 3100
SE only).
Figure 5.12: Example of continuous resistance measurement
Displayed result:
R ............... resistance
5.3.3 Compensation of test leads resistance
This chapter describes how to compensate the test leads resistance in both continuity functions,
R LOW and CONTINUITY. Compensation is required to eliminate the influence of test leads
resistance and the internal resistances of the instrument on the measured resistance. The lead
compensation is therefore a very important feature to obtain correct result.
symbol is displayed if the compensation was carried out successfully.
Circuits for compensating the resistance of test leads
Figure 5.13: Shorted test leads
37


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