Diode Test - HT ECLIPSE HT9025 User Manual

5.6.

DIODE 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 position
2. Press the MODE/VFD key to select
3. Insert the red cable into input terminal VHz% CAP
input terminal COM.
4. Position the leads at the ends of the diode to be tested (see Fig. 28), respecting the
indicated polarity. The value of directly polarized threshold voltage is shown on the
display.
5. If threshold value is equal to 0mV, the P-N junction of the diode is short-circuited.
6. If the display shows message
to the indication given in Fig. 28 or the P-N junction of the diode is damaged.
7. To use the HOLD and RANGE functions, see § 4.2
8. To use the internal functions, see § 4.3
9. To save the measured result, see § 4.3.4
Fig. 28: Use of the instrument for diode test
CAP
"
OL , the terminals of the diode are reversed with respect
" "
EN - 26
CAUTION
measurement.
"
ECLIPSE - HT9025
and the black cable into