Caution – HT instruments HT21 User Manual
Page 11
HT21
EN - 10
4.3.4. Diode
test
CAUTION
Before taking diode test measurements in circuit remove power from the
circuit being tested and discharge all capacitors.
Fig. 5: Using the instrument for diode test
1. Switch on
CAP
2. Pressing the MODE key until the symbol
is shown at display to meaning the diode
test
3. Insert the test leads into the jacks, the red plug into V
Hz%
CAP jack and black
plug into COM jack (see Fig. 5)
4. Connect the test leads to the diode under test observing the proper polarities indicated
in Fig. 5. The threshold voltage value expressed in mV under this situation is displayed
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
- COMBI419 (88 pages)
- COMBIG3 (108 pages)
- EQUITEST5071 (44 pages)
- FULLTEST3 (92 pages)
- GEO416 (116 pages)
- HT12 (4 pages)
- HT14N (12 pages)
- HT154 (13 pages)
- HT155 (68 pages)
- HT20 (5 pages)
- HT20 (6 pages)
- HT204 (8 pages)
- HT2055 (35 pages)
- HT210 (19 pages)
- HT2234N (14 pages)
- HT300 (9 pages)
- HT307 (11 pages)
- HT309 (13 pages)
- HT32 (23 pages)
- HT321 (16 pages)
- HT326 (21 pages)
- HT327 (21 pages)
- HT3301 (16 pages)
- HT3320 (30 pages)
- HT37 (24 pages)
- HT4000 (15 pages)
- HT401 (24 pages)
- HT4010 (76 pages)
- HT4011 (21 pages)
- HT4012 (84 pages)
- HT4014 (23 pages)
- HT4020 (152 pages)
- HT5 (12 pages)
- HT5000 (31 pages)
- HT6 (16 pages)
- HT603 (5 pages)
- HT70 (6 pages)
- HT701 (26 pages)
- HT7052 (120 pages)
- HT712 (17 pages)
- HT77N (14 pages)
- HT78 (16 pages)
- HT8000 (16 pages)
- HT8051 (74 pages)