Diode Testing; Continuity Testing; Battery Test; Battery And Fuse Replacement - Velleman DVM821 Bedienungsanleitung

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 and Fuse 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
There are no user-serviceable parts inside the device.
Refer to an authorized dealer for service and/or spare parts.
Disconnect the test leads from the test points and remove the test
leads from the measuring terminals before replacing the batteries
or fuses.
 When" " is displayed, the battery should be replaced.
 Fuses rarely need replacement and blown fuses almost always result
from human error.
To replace the battery or fuse:
V. 01 – 23/02/2016
DVM821
" position.
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