HT instruments М75 - Manual (Page 27)

M72 - M73 - M74 - M75
EN - 25
9. The continuity test is performed by supplying a current higher than 200mA if the
resistance value is lower than 5  (including the cable resistance stored as offset after
calibration). For higher resistance values the instrument performs the test with
decreasing current
10. At the end of the test, if it has been
possible to generate at least 200mA
(not particularly high resistance
value), the instrument emits a
double sound to signal the positive
outcome of the test. The screen
beside is displayed
Resistance value
Test current value
11. At the end of the test, if it has not
been possible to generate 200mA
due to the high resistance value, the
instrument emits a prolonged sound
to signal the negative outcome of
the test. The screen beside is
displayed
Resistance value
Test current value
4.12.1. "CAL" mode
Fig. 10: Connection of the instrument’s terminals during calibration procedure