Diode And Continuity Test - Ht Instruments Ht401 Bedienungsanleitung

5.7.

DIODE AND CONTINUITY TEST

Before attempting any resistance measurement, cut off power supply from
the circuit to be measured and make sure that all capacitors are discharged,
if present.
1. Select the position
2. Press the MODE key to start testing diodes. The "
3. Insert the red cable into input lead
4. Connect the red lead to the anode and the black lead to the cathode of the diode (see
Fig. 8). The instrument's display shows the direct polarization voltage. This voltage is
typically 0.4 ~ 0.9V with good junctions.
5. Reverse connections and measure potential drop at the ends of the diode. An "O.L"
result on the display indicates the correct operation of the junction.
6. Press the MODE key to select Continuity test. The "
7. Insert the red and black cables as described in "Resistance measurement" to carry out
the measurement. The buzzer is ON for resistance values < 30
8. For HOLD function please refer to § 4.2
Fig. 8: Diode and continuity test
/
V and the black cable into input lead COM
EN - 15
CAUTION
" symbol is shown at display
" symbol is shown at display
HT401