Velleman DVM840 - Manual (Page 7)

18.10.201
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7. Fro
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2. Select t
range is
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rtment.
e the 2 screws unde
remove the front pl
re located at the bo
m).
he housing and tigh
he battery compartm
ont panel Des
he illustrations on p
perating instru
Risk of electric shoc
ircuits.
Before measuring, a
damaged and verify
exceed the limit valu
cifications for each
touch unused term
e the meter in the i
re voltages that mig
a measuring range is
o the appropriate ra
nect the test leads f
r to change function
carrying out measur
ber that high amplit
be careful when wo
ngers behind the pro
measure current in
perform resistance,
capacitors in the ci
oltage measurem
Do not measure circ
Always be careful w
Keep your fingers be
Do not touch unused
being tested.
t the black test lead
Ω" jack.
he appropriate V
s unknown, always s
riate range.
t the test leads to t
DVM840
7
r the battery cover
late from the housi
ottom of the PCB, 2
ten the 2 screws.
ment and reseat th
scription
page 2 of this manu
uctions
ck during operation
always make sure th
the connections, se
ue for protection. T
range of measurem
inals when the met
indicated overvolta
ght exceed the indic
s unknown, always
ange.
from the tested circ
ns.
rements on a TV set
tude voltage pulses
orking with voltage
obe barriers at all ti
circuits with voltag
diode or continuity
rcuit are discharged
ments
cuits where voltage
hen working with v
ehind the probe bar
d terminals when th
d (‐) to the "COM" j
range with the FU
select the highest p
the circuit.
.
ng.
00mA/250V left, 10
e screw.
al.
n. Be very careful wh
he meter and/or tes
elected function an
This limit value is list
ment.
ter is linked to a circ
ge/installation cate
cated category value
select the highest p
cuit before rotating
t or switching powe
s at the test points m
s above 60Vdc or 3
imes during measur
ges > 250V
y measurements on
d.
es > 600V CAT III ma
voltages above 60Vd
rriers at all times du
he meter is linked t
ack and the red tes
UNCTION switch. W
possible range and l
©Velleman n
0A/250V right (both
hen measuring live
st probes are not
d range.
ted separately in
cuit which is being
egory. Never
es.
possible range and
the range selector
er circuits, always
might damage the
0Vac rms. Keep
rement.
n live circuits. Make
ay occur.
dc or 30Vac rms.
uring measurement
o a circuit which is
st lead (+) to the
When the measuring
ower to the
nv
h
t.
g