Caution – HT instruments HT326 User Manual
Page 14
HT326
EN - 13
4.3.7. Diode
test
CAUTION
Before taking resistance measurements on the circuit remove power from
the circuit being tested and discharge all capacitors.
Fig. 8: Using the instrument for Diode test
1. Selecting the position
2. Insert the test leads into the jacks, the red plug into V
Hz
jack, and black plug
into COM jack
3. Connect the test leads to the diode under test observing the proper polarities (see Fig. 8)
4. The threshold voltage value of direct polarization is shown at display
5. If the threshold voltage value is 0V the diode P-N junction is shorted circuit
6. If the message “
O.L.
" is displayed the diode terminals are reversed, the diode P-N
junction is damaged
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