Continuity Test And Diode Test; Battery Test - Ht Instruments Ht15D Bedienungsanleitung

5.5. CONTINUITY TEST AND DIODE TEST

Before taking any in circuit resistance measurement,
remove power from the circuit to be tested and discharge
all the capacitors
1. Selecting the position
shown on the display
2. Insert the test leads into the jacks, the red plug into
VmAA jack and black plug into COM jack
Continuity test
3. Connect the test leads to the circuit under test (see Fig. 6 –
right part)
4. The resistance value (just indicative) is displayed and the
instrument emits a sound signal if the resistance value results

to be <40
Diode test
5. Connect the test leads to the diode under test observing the
proper polarities (see Fig. 6 – left part)
6. The threshold voltage value of direct polarization, expressed in
V (note decimal point) is shown on the display
7. If the threshold voltage value is 0V the diode P-N junction is
shorted circuit
8. If the message "OL" is displayed the diode terminals are
reversed, the diode P-N junction is damaged

5.6. BATTERY TEST

1. Selecting the position 1.5V (1.5V battery test) or 9V (9V battery
test)
2. Insert the test leads into the jacks, the red plug into
VmAA jack, and black plug into COM jack
3. Connect the red and black test leads to the positive and
negative poles of the battery under test respectively (see Fig.
7). The battery voltage value is displayed
1. For HOLD function refer to § 4.2
27
CAUTION
. The " " are always both
HT15D