MI 3121 Smartec Insulation / Continuity
Continuity
26
5.2.3 Compensation of test leads resistance
This chapter describes how to compensate for test leads resistance in both continuity
functions (RLOW and CONT). 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. Once compensation has been performed, the compensation symbol (
) appears
on the screen.
Each of RLOW and CONT has each own compensation.
Circuits for compensating the resistance of test leads
Figure 5.9: Shorted test leads
Compensation of test leads resistance procedure
Select the any
continuity function using the function switch.
Connect
test cable to the top of the instrument and short the test leads together
(see
figure 5.9
).
Press
TEST
to perform
resistance measurement.
Press the
CAL
key to compensate leads resistance.
Note:
The limit value for lead compensation is 5
Ω
.
