HT instruments HT9021 - Manual (Page 12)

HT9021
EN - 11
CAUTION
Before taking any in circuit resistance measurement, remove power from
the circuit to be tested and discharge all the capacitors.
Fig. 6: Taking Continuity test and Diode test
1. Rotate the switch on
Ω
CAP
position
2. Pushing MODE key and select continuity test. The symbol is shown at display
3. Insert the red test lead plug into V Ω
CAP Temp
jack and the black test lead plug
into COM jack and perform continuity test on the object under test (see Fig. 6 – left
side). Buzzer emits sound if the measured resistance value is less about 60
Ω
4. Pushing MODE key and select diode test. The “ ” symbol is shown at display
5. Connect the red test leads to the anode of diode on test and the black test lead on the
cathode ones (see Fig. 6 – right side). Reverse position of test leads to reading reverse
polarization voltage
6. The correspondent threshold voltage of P-N junction is showed on display. Bargraph is
disabled in diode test