Velleman DVM893, Руководство пользователя

Страница: 10 / 84

V. 03 – 01
in ser
dama
7. Switch
The m
negat
prece
range
8. Cut of
9. Discha
10. Remo
11. Resto
7.6 Mea
To
cir
res
Ne
The meter
20.00 M
Ω ,
To measur
1. Select
2. Conne
“
Ω ” so
3. Conne
The m
Notes:
• The me
rated va
paths b
• To incre
of the te
Subtrac
• For resi
needs a
measur
• If the m
circuit,
7.7 Test
To
cir
dio
Ne
To test a d
1. Set th
2. Conne
s
1/02/2013
ries ). Reversing th
ge the meter.
h on the power su
measured value ap
tive polarity is pres
ded by a “–” sign.
e limit, the display
ff the power suppl
arge all the high-v
ove the test probes
re the circuit to its
asuring Resistanc
o avoid electrical sh
rcuit power and dis
sistance.
ever perform res
r’s ranges are: 200
, 200.0 M Ω .
re resistance:
t the appropriate “
ect the black test l
ocket.
ect the test probes
measured value ap
asured value of a
alue. This is becau
etween the probe
ease accuracy whe
est probes togethe
ct this value from t
stance measurem
a few seconds to st
ring.
measured resistanc
the display shows
ting Diodes
o avoid electrical sh
rcuit power and dis
odes.
ever perform dio
diode out of a circu
he rotary switch to
ect the black test l
socket.
DVM893
10
he probes will give
pply of the circuit
pears on the displ
sent at the red tes
When the measu
shows “1”. Select
y of the circuit to
voltage capacitors.
s from the circuit.
s original condition
ce
hock and/or dama
scharge all high-vo
sistance measure
0.0 Ω , 2.000 k Ω , 20
“ Ω ” range with the
lead to the “COM”
s to the circuit/com
pears on the displ
resistor in a circui
use the meter’s tes
tips.
en measuring low
er to determine th
the measured valu
ents in the 20 M Ω
tabilize the readou
ce exceeds the sele
“1”.
hock and/or dama
scharge all high-vo
ode measuremen
uit:
o the position.
lead to the “COM”
3
e a negative readin
to measure.
ay. For DC measu
st probe, the indica
red value is highe
t a higher range.
measure.
.
n.
age to the instrume
oltage capacitors b
ements on a live
0.00 k Ω , 200.0 k Ω
e rotary switch.
socket and the re
mponent under tes
ay.
it often differs from
st current flows th
resistance values,
e resistance value
ue of the circuit.
and 200 M Ω rang
ut. This is normal f
ected range or in c
age to the instrume
oltage capacitors b
nts on a live circu
.
socket and the re
©Velleman n
ng, but will not
urements, when a
ated value is
r than the selected
ent, disconnect th
before measuring
e circuit.
Ω , 2.000 M Ω ,
ed test lead to the
st.
m the resistor’s
rough all possible
first hold the tips
e of the test leads.
ges, the meter
for high resistance
case of an open
ent, disconnect th
before testing
uit.
ed test lead to the
nv
d
e
e
e