Velleman DVM821 Manual Del Usuario página 10

• The maximum input current is 500 mA.
12. Resistance Measurement
Do not conduct resistance measurements on live circuits. Make sure
all capacitors in the circuit are depleted.
1. Set the rotary switch in the appropriate "" range position.
2. Connect the test leads to the resistor to be measured and read the
LCD display.
3. If the resistance being measured is connected to a circuit, turn off the
power and discharge all capacitors before applying the test probes.
13. Diode Testing
Do not conduct diode or continuity measurements on live circuits.
Make sure all capacitors in the circuit are depleted.
1. Set the rotary switch in the "
2. Connect the red test lead to the anode of the diode to be tested and
the black test lead to the cathode of the diode. The approx. forward
voltage drop of the diode will be displayed. If the connection is
reversed, the display will merely show a "1".
14. Continuity Testing
Do not conduct diode or continuity measurements on live circuits.
Make sure all capacitors in the circuit are depleted.
1. Set the range switch in the " " position.
2. Connect the test leads to two points of the circuit to be tested. If
continuity exists, the built-in buzzer will sound.
15. Battery Test
1. Set the range switch in the "1.5 V" or "9 V" position.
2. Connect the test leads to the source to be measured.
3. Read the value on the LCD display.
16. Battery Replacement
WARNING: To avoid electrical shock always disconnect the test
leads prior to opening the housing. To prevent fire hazards, only
use fuses with the same ratings as specified in this manual.
Remark: refer to the warning on the battery compartment
V. 03 – 20/03/2020
DVM821
" position.
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