Velleman DVM850BL User manual

D
V
USER
M
GEBR
U
NOTIC
E
MANU
A
BEDIE
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INSTR
U
VM
M
ANUAL
U
IKERSH
A
E
D’EMP
L
A
L DEL U
N
UNGSA
N
U
KCJA O
B
M
8
5
A
NDLEI
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L
OI
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LEITUN
B
SŁUGI
50
D
ING
G
0
B
L
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T
I
s
T
R
I
1
1
T
e
(
F
i
n
F
l
l
1
T
o all resid
I
mportant
e
Thi
s
cou
l
Do
n
s
pecialised
c
T
his device
R
espect the
I
f in doubt,
1
. SAF
E
1
.1. SA
F
T
his multi
e
lectronic
(
CAT II).
F
ollow all
n
good ru
n
F
ull comp
l
eads sup
p
eads.
1
.2. SA
F
ents of the
e
nvironme
n
s
symbol o
n
l
d harm the
n
ot dispose
c
ompany f
o
should be
r
local envir
o
contact
yo
E
TY
F
ETY I
N
me
t
er has
measurin
g
safety an
d
n
ning or
d
l
iance wi
t
p
lied with
F
ETY S
Y
I
m
D
a
E
a
D
o
R
e
m
a
European
n
tal infor
m
n
the device
environme
n
of the unit
o
r recycling
.
r
eturned to
y
o
nmental r
u
o
ur local w
a
N
FORM
A
been des
i
g
instrum
e
d
operati
n
d
er.
t
h safety s
t
this pack
a
Y
MBOL
S
m
portant s
a
a
ngerous
v
a
rthing.
o
uble ins
u
e
place a b
a
nual.
Union
m
ation abo
u
or the pac
k
n
t.
(or batterie
s
.
y
our distrib
u
u
les.
a
ste dispos
A
TION
i
gned in
a
e
nts that
e
n
g instruc
t
t
andards
c
a
ging. If
n
S
a
fety info
r
v
oltage is
u
lation (cl
lown fus
e
ENGL
I
u
t this pro
d
k
age indica
t
s
) as unsor
t
u
tor or to a
al authori
t
a
ccordanc
e
e
mit pollu
t
t
ions to e
n
c
an only
b
n
ecessary,
r
mation,
r
possible.
ass II-pro
t
e
by a fus
e
I
SH
d
uct
t
es that dis
p
ed municip
local recy
c
ies.
e
with IE
C
t
ion 2 an
d
n
sure that
t
b
e guarant
e
they sho
u
r
efer to th
e
t
ection)
e
with the
p
osal of the
al waste; it
c
ling servic
e
C
-1010. T
h
d
belong t
o
t
he meter
e
ed when
u
ld be rep
l
e
user ma
n
same rati
n
device afte
r
should be
t
e
.
h
is norm
p
o
an over
v
is used s
a
the buye
r
l
aced wit
h
n
ual.
n
gs as spe
r
its lifecyc
l
t
aken to a
p
ertains t
o
v
oltage ca
t
a
fely and i
r
uses the
t
h
identical
cified in t
l
e
o
t
egory
s kept
t
est
his

2. MAINTENANCE
•Before opening the case, always disconnect the test leads from all live circuits.
•Avoiding fire risks : respect the specified voltage and current ratings when replacing the
fuse.
F 200mA / 250V (Quick acting)
•Do not use the device unless the back cover is in place and securely fastened.
•Do not apply abrasives or solvents to the meter. Use a damp cloth and mild detergent for
cleaning purposes.
3. DURING USE
•Never exceed the limit value for protection. This limit value is listed separately in the
specifications for each range of measurement.
•Do not touch unused terminals when the meter is linked to a circuit which is being tested.
•Never use the meter with category II installations when measuring voltages that might
exceed the safety margin of 600V above earth ground.
•Set the range selector at its highest position if the intensity of the charge to be measured is
unknown beforehand.
•Disconnect the test leads from the tested circuit before rotating the range selector in order
to change functions.
•When carrying out measurements on a TV set or switching power circuits, always
remember that the meter may be damaged by any high amplitude voltage pulses at test
points.
•Always be careful when working with voltages above 60Vdc or 30Vac rms. Keep your
fingers behind the probe barriers at all times during measurement.
•Before attempting to insert transistors for testing, always verify if the test leads have been
disconnected.
•Components should not be connected to the hFE socket while test leads are being used to
execute voltage measurements.
•Never perform resistance measurements on live circuits.
4. GENERAL DESCRIPTION
The device is a battery-operated, hand-held 3 ½ digital multimeter for measuring DC and
AC voltages, DC current and resistance. It also offers the possibility of executing continuity
tests and of testing diodes and transistors. The back light is optional.

4.1. FRONT PANEL

4
c
d
e
f
g
h
i
5
M
c
h
M
F
P
D
M
O
P
O
S
L
D
W
4
.2. FR
O
c
Displa
3 ½ di
g
d
Back l
i
When
t
secon
d
e
Rotar
y
This s
w
on/off
.
f
Hold
b
Upon
p
will re
m
g
"10A"
Insert
t
h
"CO
M
Insert
t
i
"VΩ
m
Insert
t
curren
t
5
. SPE
C
M
aximu
m
c
ircumsta
n
h
umidity
o
M
aximum
F
use prot
e
P
ower
D
isplay
M
easurin
g
O
verrang
e
P
olarity i
n
O
perating
S
torage te
m
L
ow batte
r
D
imensio
n
W
eigh
t
O
NT P
A
y
g
its, 7 se
g
i
gh
t
t
his butto
n
d
s.
y
switch
w
itch is u
s
.
b
utton
p
ushing t
h
m
ain on t
h
jack
t
he red te
s
M
" jack
t
he black
m
A" jack
t
he red (p
o
t
(except
1
C
IFICA
T
m
accuracy
n
ces requi
o
f 80%.
voltage b
e
e
ction
g
metho
d
e
indicatio
n
dication
temperat
u
m
peratur
e
r
y indicat
i
n
s
A
NEL D
E
g
ments, L
C
n
is pushe
d
s
ed to sel
e
h
is button
,
h
e LCD
u
s
t lead in
t
(negative
)
o
sitive) t
e
1
0A).
T
IONS
is achiev
e
res a tem
p
e
tween
t
er
m
n
u
re
e
i
on
E
SCRIP
C
D : 15m
m
d
, the back
e
ct functi
o
,
the displ
a
u
ntil the b
u
t
his conn
e
)
test lead
.
e
st lead in
e
d during
p
erature o
f
m
inals and
TION
m
high
light will
i
o
ns and d
e
a
y will re
t
u
tton is p
u
e
ctor in or
d
.
this conn
e
a one-ye
a
f
18 to 28
earth gro
u
i
lluminate
e
sired ran
g
t
ain the la
u
shed agai
d
er to me
a
e
ctor to
m
a
r period
a
°C (64°F
t
u
n
d
CAT
F 20
0
9V b
a
LCD
,
Dual
-
Only
"-" di
0 to
4
-10°
C
"
"
138
x
Appr
o
your disp
l
g
es as wel
st readin
g
n.
a
sure a m
a
m
easure v
o
a
fter calib
r
t
o 82°F)
w
II 600V
0
mA / 25
0
a
ttery
,
1999 co
u
-
slope int
e
figure "1
"
splayed f
o
4
0°C
C
to 50°C
"
appears
x
69 x 31
m
o
x. 170g
l
ay for ap
p
l as to tur
n
g
and the "
a
x. curren
t
o
ltage, res
i
r
ation. Th
w
ith a ma
x
0
V
u
nts, upd
a
e
gration
A
"
on the d
i
o
r negativ
on the di
s
m
m
p
roximatel
y
n
the met
e
"-sym
b
t
of 10A.
i
stance an
d
e ideal se
t
x
imum re
l
a
tes 2-3/se
A
/D conve
r
i
splay
e polarity
s
play
y
5
e
r
b
ol
d
t
of
l
ative
c.
r
te
r

5
O
5
O
5
O
F
5
O
5
.1. DC
Range
200mV
2V
20V
200V
600V
O
verload
p
5
.2. DC
Range
200ùA
2mA
20mA
200mA
10A
O
verload
p
5
.3. AC
Range
200V
600V
O
verload
p
F
requenc
y
5
.4. DI
O
Range
O
verload
p
VOLTA
p
rotectio
n
CURR
E
p
rotectio
n
VOLTA
G
p
rotectio
n
y
range : 4
O
DE &
C
p
rotectio
n
GE
Reso
l
10
0
1
m
10
m
10
0
1
V
n
: 250Vr
m
E
NT
Reso
l
0.1
1
µ
10
10
0
10
m
n
: F 200
m
G
E
Reso
l
10
0
1
V
n
: 600Vd
c
0Hz to 4
0
C
ONTIN
U
If contin
u
Di
s
n
: 250Vd
c
l
ution
0
µV
m
V
m
V
0
mV
V
m
s for the
l
ution
µA
µ
A
µA
0
µA
m
A
m
A / 250V
l
ution
0
mV
V
c
or rms a
c
0
0Hz. Res
p
U
ITY
u
ity exists
s
plays the
c
or rms a
c
200mV r
a
fuse. (no
c
for all r
a
p
onse : a
v
De
s
(less tha
n
diode's a
p
c
±
0
±
0
±
0
±
0
±
0
a
nge and
6
±
±
±
±
±
fuse for t
h
±
±
a
nges.
v
erage, ca
l
s
cription
n
60
Ω
), b
u
p
prox. for
w
Acc
u
0
.5% of r
d
0
.5% of r
d
0
.5% of r
d
0
.5% of r
d
0
.8% of r
d
6
00Vdc o
r
Acc
u
±
1% of rd
g
±
1% of rd
g
±
1% of rd
g
1.5% of r
d
±
3% of rd
g
h
e 10A ra
n
Acc
u
1.2% of r
d
1.2% of r
d
l
ibration i
n
u
il
t
-in bu
z
w
ard volt
a
u
racy
d
g ±2 di
g
d
g ±2 di
g
d
g ±2 di
g
d
g ±2 di
g
d
g ±2 di
g
r
rms ac f
o
u
racy
g
±2 digi
t
g
±2 digi
t
g
±2 digi
t
d
g ±2 di
g
g
±2 digi
t
n
ge).
u
racy
d
g ±2 di
g
d
g ±2 di
g
n
rms of
a
z
zer will s
o
a
ge drop
g
its
g
its
g
its
g
its
g
its
o
r other r
a
t
s
t
s
t
s
g
its
t
s
g
its
g
its
a
sine wa
v
o
un
d
a
nges.
v
e.

5.5. RESISTANCE
Range Resolution Accuracy
200Ω0.1Ω
±
0.8% of rdg ±2 digits
2kΩ1Ω
±
0.8% of rdg ±2 digits
20kΩ10Ω
±
0.8% of rdg ±2 digits
200kΩ100Ω
±
0.8% of rdg ±2 digits
2MΩ1kΩ
±
1.0% of rdg ±2 digits
Maximum open circuit voltage : 3.2V
Overload protection : 250Vdc or rms ac for all ranges.
5.6. TRANSISTOR hFE TEST (0-1000)
Range Tested range Tested current Tested voltage
NPN & PNP 0-1000 Ib = 10µA Vcd = 3V
6. OPERATING INSTRUCTIONS
6.1. DC VOLTAGE MEASUREMENT
1. Connect the red test lead to the "VΩmA" jack and the black lead to the "COM" jack.
2. Set the rotary switch in the desired DCV position. If the voltage to be measured is
unknown beforehand, you should set the range switch in the highest range position and
then reduce gradually until the ideal resolution is obtained.
3. Connect the test leads to the source being measured.
4. Read the voltage value on the LCD display along with the polarity of the red lead
connection.
6.2. DC CURRENT MEASUREMENT
1. Connect the red test lead to the "VΩmA" jack and the black test lead to the "COM" jack
(switch the red lead to the "10A" jack for measurements between 200mA and 10A).
2. Set the rotary switch (DCA) in the desired position.
3. Open the circuit in which the current is to be measured and connect the test leads to the
circuit IN SERIES.
4. Read the current value and the polarity of the red lead connection on the LCD display

6
1
2
3
4
6
1
2
3
4
6
1
2
3
6
1
2
3
6
.3. AC
1
. Connec
t
2
. Set the
r
3
. Connec
t
4
. Read th
6
.4. RE
S
1
. Connec
t
(the red
2
. Set the
r
3
. Connec
t
4
. If the r
e
all capa
c
6
.5. DI
O
1
. Connec
t
lead ha
s
2
. Set the
r
3
. Connec
t
the cat
h
If the c
o
6
.6. TR
A
1
. Set the
r
2
. Determ
i
and col
l
panel.
3
. Read th
current
o
VOLTA
G
t
the red t
e
r
otary sw
i
t
the test l
e voltage
S
ISTAN
t
the red t
e
lead has
a
r
otary sw
i
t
the test l
e
sistance
b
c
itors bef
o
O
DE TE
S
t
the red t
e
s
a positiv
e
r
otary sw
i
t
the red t
e
h
ode of th
e
o
nnection
A
NSIST
O
r
otary sw
i
i
ne wheth
e
l
ector lea
d
e approxi
m
o
f 10µA
a
G
E ME
A
e
st lead t
o
i
tch in the
eads to th
value on
t
CE
e
st lead t
o
a
positive
i
tch in the
eads to th
b
eing mea
s
o
re apply
i
S
T
e
st lead t
o
e
polarity
i
tch in the
e
st lead t
o
e
diode. T
h
is revers
e
O
R TE
S
i
tch in the
e
r the tra
n
d
s. Insert
t
m
ate hFE
-
a
nd Vce 3
V
A
SURE
M
o
the "VΩ
m
appropri
a
e source t
t
he LCD
d
o
the "VΩ
m
polarity
"
appropri
a
e resistor
s
ured is c
o
i
ng the te
s
o
"VΩmA
"
"+".).
""po
s
o
the anod
e
h
e appro
x
e
d, the dis
p
S
T
"hFE" p
o
n
sistor un
d
t
he leads i
n
-
value ob
t
V
.
M
ENT
m
A" jack
a
te ACV
p
o be mea
s
d
isplay.
m
A" jack
"
+").
a
te "Ω" ra
n
to be me
a
o
nnected
t
s
t probes.
"
jack an
d
s
ition.
e
of the d
i
x
. forward
p
lay will
m
o
sition.
d
er testin
g
n
to the pr
o
t
ained un
d
and the b
l
p
osition.
s
ured.
and the b
l
n
ge positi
a
sured an
d
t
o a circu
i
d
the blac
k
i
ode to be
voltage d
r
m
erely sh
o
g
is NPN
o
o
per hole
s
d
er the fol
l
l
ack test l
e
l
ack test l
e
on.
d
read the
L
i
t, turn of
f
k
one to t
h
tested an
d
r
op of the
o
w a "1".
o
r PNP an
d
s
of the h
F
l
owing te
s
e
ad to the
e
ad to the
L
CD dis
p
f
the pow
e
h
e "COM"
d
the blac
k
diode wi
l
d
locate t
h
F
E-socket
s
t conditi
o
"COM" j
"COM" j
p
lay.
e
r and dis
c
jack (the
k
test lea
d
l
l be displ
h
e emitter
on the fr
o
o
ns : a ba
s
ack.
ack
c
harge
red
d
to
ayed.
, base
o
nt
s
e

6
1
2
3
7
W
F
T
t
h
P
8
B
u
t
9
•
•
•
•
•
6
.7. AU
D
1
. Connec
t
2
. Set the
r
3
. Connec
t
built-in
7
. BAT
T
W
hen"
F
uses rare
l
T
o replac
e
h
e case.
R
P
lease re
m
8
. WAR
N
B
efore att
e
u
sing the
m
o avoid e
l
9
.
A
CC
E
•
User m
a
•
Set of t
e
•
Gift bo
x
•
9V batt
e
•
Holster
D
IBLE
C
t
the red t
e
r
ange swi
t
t
the test l
buzzer w
i
T
ERY &
" is disp
l
l
y need r
e
e
the batte
r
R
emove t
h
m
ember to
N
ING
e
mpting t
o
m
eter, ple
a
l
ectrosho
c
E
SSORI
a
nual
e
st leads
x
e
ry
C
ONTIN
e
st lead t
o
t
ch in the
eads to t
w
i
ll sound.
FUSE
R
l
ayed, the
e
placeme
n
r
y or fuse
h
e old spe
c
obse
r
ve
b
o
open th
e
a
se reme
m
c
ks.
ES
UITY T
E
o
"VΩmA
"
""po
s
w
o points
o
R
EPLA
C
battery s
h
n
t and blo
w
(200mA
/
c
imen an
d
b
attery po
l
e
case, ve
r
m
ber to cl
o
E
ST
"
and the
b
s
ition.
o
f the cir
c
C
EMEN
T
h
ould be r
e
w
n fuses
a
/
250V),
s
d
insert th
e
l
arity.
r
ify if the
t
o
se the ca
s
b
lack one
c
uit to be
t
T
e
placed.
a
lmost al
w
s
imply re
m
e
new one
t
est leads
h
s
e and tig
h
to "CO
M
t
ested. If
c
w
ays resul
t
m
ove the
2
.
h
ave bee
n
h
ten the s
c
M
".
c
ontinuity
t
from hu
m
2
screws a
n
disconn
e
c
rews pro
p
exists, th
e
m
an error.
t the bac
k
e
cted. Be
fo
p
erly in o
r
e
k
of
fo
re
r
der

A
B
e
U
R
H
1
1
D
h
o
V
m
U
Z
1
A
an alle in
B
elan
g
ri
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Dit s
y
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Gooi
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U
moet dit
t
R
espectee
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H
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a
1
. VEILI
G
1
.1. VEI
D
eze mult
i
h
eeft betre
k
o
vervoltag
V
olg nau
w
m
ultimete
r
U
voldoet
e
Z
o nodig
m
1
.2. VEI
g
ezetene
n
e
milieu-in
y
mbool op
g
eworpen,
d
dit toestel
c
ialiseerd b
t
oestel naa
r
de plaats
e
ag
en, cont
a
G
HEID
LIGHEI
D
i
meter we
r
k
king op
e
ecategori
e
w
gezet alle
r
bedrijfsk
l
e
nkel aan
m
oet u ze
v
LIGHEI
D
B
e
G
e
A
a
D
u
V
e
w
a
n
van de E
u
formatie
b
het toestel
d
it toestel
s
(
en event
u
edri
j
f terec
r uw verde
e
li
j
ke milie
u
a
cteer da
n
D
SVO
O
r
d ontwor
p
e
lektronis
c
e
(CAT II)
veilighei
d
l
aar en ku
n
de veilig
h
v
ervangen
D
SSYM
e
langrijk
e
e
vaarlijk
v
a
rding.
u
bbele is
o
e
rvang ee
n
a
arden als
N
E
u
ropese U
b
etreffend
e
of de verp
s
chade ka
n
u
ele batteri
j
htkomen v
o
ler of naar
u
wet
g
evin
g
n
de plaat
s
O
RSCH
R
p
en in ove
c
he meeti
n
behoren.
d
s- en bed
i
n
t u er ze
k
h
eidsvoors
c
door de i
d
BOLE
N
e
info i.v.
m
v
oltage m
o
latie (kla
s
n
doorge
s
vermeld
i
E
DER
L
nie
e
dit prod
u
akkin
g
g
e
e
n
toebren
ge
en
)
niet bi
j
o
or rec
y
cl
a
een lokaal
.
s
eli
j
ke aut
o
R
IFTEN
reenstem
m
n
strument
e
i
eningsvo
o
k
er van zij
n
c
hriften i
n
d
entieke s
n
N
m
. de veili
ogelijk.
s
se II-
b
es
c
s
lagen ze
k
i
n deze h
a
L
ANDS
u
ct
e
ft aan dat,
e
n aan het
het
g
ewo
n
ag
e.
rec
y
cla
g
e
p
o
riteiten i
n
m
ing met
d
e
n die nor
m
o
rsc
h
rifte
n
n
dat u he
m
n
dien u de
m
n
oeren.
gheid, zi
e
c
herming
)
k
ering doo
r
a
ndleidin
g
als het na
milieu.
n
e huishou
d
p
unt bren
ge
n
zake ver
w
d
e IEC-10
m
2-vervu
i
n
op. Enke
l
m
op een
v
m
eegelev
e
e
gebruike
r
)
r
een zek
e
g
.
zi
j
n leven
s
d
eli
j
ke afv
a
e
n.
w
i
j
derin
g
.
10-norm.
D
i
ling uitst
o
l
dan hou
d
v
eilige ma
n
e
rde tests
n
r
shandlei
d
e
ring met
d
s
c
y
clus wo
r
a
l; het moe
t
D
eze nor
m
o
ten en tot
d
t u uw
n
ier gebr
u
n
oeren geb
d
ing.
d
ezelfde
r
dt
t
bi
j
m
een
u
ikt.
ruikt.