Weidmüller Digi-Check 5.2 Mode D'emploi page 18

Digi-Check 5.2 04.12.2003 15:02 Uhr Seite 18
Continuity test (also polarity-dependent)
The tester must be switched off holding it down. Releasing the
before performing a continuity "ON-MODE" button will auto-
test. continuity testing can be matically select the voltage
performed as shown by press- mode.
ing the "ON/MODE" button and
Continuity
Polarity-dependent continuity test (semiconductor test)
To distinguish reliably between age in the blocking direction.
the continuity and blocking Due to the high input resistance
directions, the semiconductor values, no semiconductor can
must have a blocking voltage be damaged by this test.
greater than6 V. Otherwise, the
display may also indicate a volt-
Flow direction = continuity, Blocking direction = no continuity
polarity identified,
semiconductor operating
Measurement principle
Measuring voltage with current
R
injection. With test probes
unconnected (high resistance),
no more that the voltage of the
internal battery (9 V) is applied
to the test probes (LED lights
up). This measurement principle
applies to resistance and conti-
nuity measurement.
18
No
continuity