Velleman DVM893 Manual Del Usuario página 10

in ser ries). Reversing th
dama ge the meter.
7. Switch h on the power su
The m measured value ap
negat tive polarity is pres
prece ded by a "–" sign.
range e limit, the display
8. Cut of ff the power suppl
9. Discha arge all the high-v
10. Remo ove the test probes
11. Resto re the circuit to its
7.6 Mea asuring Resistanc
To o avoid electrical sh
cir rcuit power and dis
res sistance.
Ne ever perform res
The meter r's ranges are: 200
20.00 MΩ, , 200.0 MΩ.
To measur re resistance:
1. Select t the appropriate "
2. Conne ect the black test l
"Ω" so ocket.
3. Conne ect the test probes
The m measured value ap
Notes:
• The me asured value of a
rated va alue. This is becau
paths b etween the probe
• To incre ease accuracy whe
of the te est probes togethe
Subtrac ct this value from t
• For resi stance measurem
needs a a few seconds to st
measur ring.
• If the m measured resistanc
circuit, the display shows
7.7 Test ting Diodes
To o avoid electrical sh
cir rcuit power and dis
dio odes.
Ne ever perform dio
To test a d diode out of a circu
1. Set th he rotary switch to
2. Conne ect the black test l
socket. s
V. 03 – 01 1/02/2013
DVM893
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
0.0Ω, 2.000 kΩ, 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 MΩ
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"
10
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 kΩ, 200.0 kΩ
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 MΩ 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
ng, but will not
urements, when a
ated value is
r than the selected
ent, disconnect th
before measuring
e circuit.
Ω, 2.000 MΩ,
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
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