Continuity Check; Diode Test - Omega CA450 User Manual

Note
Zero adjustment for resistance
We recommend that you perform zero adjustment to obtain accurate measurements.
After you perform steps  and 2 above, short the test leads, and press the REL key.
(When zero adjustment is performed, the instrument will show a reading of 0.0 Ω.)
The zero adjustment value is used until the power is turned off.
4.3.5

Continuity Check (

CAUTION
To avoid damaging the instrument:
Before measurement, turn off the circuit under measurement so that no voltage is
applied.
) Turn the function switch to the "
2) Insert the test leads into the input terminals.
) Connect the test leads to the circuit under measurement
whose continuity you want to check.
If the circuit is continuous (less than approximately 50Ω),
the buzzer sounds.
4.3.6

Diode Test (

CAUTION
To avoid damaging the instrument:
Before measurement, turn off the circuit under measurement so that no voltage is
applied.
1) Turn the function switch to the "Ω" position.
Press SELECT to switch to diode measurement.
( is displayed.)
2) Insert the test leads into the input terminals.
) Connect the test leads to the diode, and then read the value
when it stabilizes.
)
" position.
)
2
Test leads
Black Red
Test leads
Black Red