HT HT22D Manual De Instrucciones página 32

5.3. RESISTANCE AND CONTINUITY TEST
Before taking any in circuit resistance measurement,
remove power from the circuit to be tested and discharge
all the capacitors
Select position 
1.
2. Insert the red cable into input terminal VmAA Hz%
and the black cable into input terminal COM.
3. Position the test leads in the desired spots of the circuit to be
measured (see Fig. 4 – left part). The display shows the value of
resistance.
4. If the display shows the message "OL", select a higher range.
5. Press the MODE key to select
continuity test, and position the test leads in the desired spots
of the circuit to be measured (see Fig. 4 – right part)
6. The value of resistance (which is only indicative) is displayed in
 and the instrument sounds if the value of resistance is <50
7. To use the HOLD, RANGE functions, see § 4.2
5.4. DIODE TEST
Select position 
1.
2. Press the MODE key to select
3. Insert the red cable into input terminal VmAA Hz%
and the black cable into input terminal COM.
4. Position the leads at the ends of the diode to be tested (see Fig. 5),
respecting the indicated polarity.
5. The value of directly polarized threshold voltage is shown on
the display.
6. If threshold value is equal to 0mV, the P-N junction of the diode
is short-circuited.
7. If the display shows the message "O.L", the terminals of the
diode are reversed with respect to the indication given in Fig.
6or the P-N junction of the diode is damaged
32
CAUTION
.
" "
measurement, relevant to the
.
" "
measurement.
HT22D