Velleman DVM20FGCN2 Manual do Utilizador Página 4
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Avaliado. / 5. Com base em avaliações de clientes
19.04.2011
5. Pa
n
Refer to th
1 Dis
p
2 uni
t
3 OV
E
4 GA
T
5 RA
N
6 FU
N
7 AT
T
8 FR
E
9 RA
M
10 AM
P
11 DC
12 CM
O
13 SY
N
14 VC
F
15 OU
T
16 PO
W
17
po
w
fus
e
18 AC
s
19 EX
T
20 AT
T
21
EX
T
INP
6. Op
e
The functi
o
to observe
1. Triangl
e
a) Fi
r
ra
b) C
o
c) A
d
2. Pulse
a) P
r
b) P
u
3. Ramp
a) P
r
b) P
u
4. TTL/CM
O
a) S
e
b) C
o
c) N
o
th
d) T
o
n
el Descript
i
h
e illustrations on
p
lay The
t
s uni
t
E
R Lig
h
T
E Thi
s
N
GE
Can
rot
a
N
CTION
To
s
or
p
T
Pre
s
E
QUENCY Use
M
P/PULSE
Wh
e
dut
y
sy
m
P
LITUDE Use
OFFSET
Wit
h
tur
n
pre
s
O
S LEVEL
Wh
e
pre
s
N
C OUTPUT The
F
Thi
s
T
PUT
Thi
s
The
W
ER on/
o
w
er plug
e
holder
po
w
fus
e
s
elector 230
T
/INT
Wh
e
rele
T
EN –20dB Pre
s
T
counter
UT
Inp
u
e
ration
IMPORTANT: b
e
setting matches
y
NEVER change
o
n generator can
p
the waveform.
e
, Square and Sin
e
rst select a wave
f
a
nge with the app
r
o
nnect the OUTP
U
d
just the AMPLIT
U
r
ess down the squ
u
ll out the RAMP/
P
r
ess down the tria
u
ll out the RAMP/
P
O
S
e
lect a proper ran
g
o
nnect the SYNC
O
o
w the output sig
n
h
e signal from 5V
~
o
get a fixed TTL
s
i
on
page 2 of this m
a
internally or ext
e
t
of display is indi
c
h
ts up when the f
r
s
indicator flashes
be used to selec
t
a
ry control [8].
s
elect the output
w
p
ulse with the pus
s
s this button for
3
d in combination
w
e
n the knob is pul
y
cycle of the pul
s
m
metrical.
this knob to adju
h
this knob in the
n
ing it clockwise (
+
s
sed down.
e
n the knob is in
t
s
sed in, the synch
output wavefor
m
s
input is used to
c
s
jack sends out t
h
output impedanc
o
ff switch
w
er cable input so
c
e
: F1A/250V (5x2
0
V/115Vac selecto
e
n the button is p
r
ased, the device
m
s
s this button to
a
u
t terminal for th
e
e
fore connecting
t
y
our local mains
p
the setting duri
p
rovide various ki
e
wave
f
orm (sine – squa
r
r
opriate range bu
t
U
T jack [15] to a
n
U
DE knob [10] to
are wave button
[
P
ULSE knob [9] a
ngle wave button
P
ULSE knob [9] a
g
e [5] and set th
O
UTPUT [13] to
a
n
al is CMOS squa
r
~
14V.
s
quare wave, pull
DVM20FGC
N
4
a
nual.
e
rnally generated
f
c
ated by a LED (
M
r
equency is beyon
when the counte
r
t
a frequency ran
g
w
aveform (sine –
h/pull rotary kno
b
3
0dB attenuation
w
ith the RANGE-
b
led, the symmetr
y
s
e can also be adj
u
st the output am
p
pulled-out positi
o
+
) or anticlockwi
s
t
he pulled-out po
s
ronizing signal is
m
is a TTL pulse th
a
c
ontrol the frequ
e
h
e signal of the s
e
e is 50Ω.
c
ket
0
mm)
r
r
essed, the devic
e
m
easures the int
e
a
ttenuate an exte
r
e
external counte
r
t
he DVM20FGCN
p
ower system (11
ng operation.
nds of waveform
s
r
e – triangle) by
p
t
ton [5]. Adjust t
h
n
oscilloscope (no
t
control the ampli
t
[
6], select a prop
nd rotate it to adj
[6], select a pro
p
nd rotate it to adj
e desired frequen
a
n oscilloscope (n
o
r
e wave. Rotate t
h
out the CMOS LE
V
N
2
f
requency is displ
a
M
Hz – KHz – Hz)
d the selected ra
n
r
is working.
g
e (7steps) in co
m
square – triangle
)
b
RAMP/PULSE [9
]
(released, there i
b
uttons [5] to sel
e
y
is adjustable an
d
u
sted (20~80%).
p
litude.
o
n you can set th
e
s
e (-). The DC vol
t
s
ition, the Synchr
o
CMOS and amplit
a
t can be used as
e
ncy through an e
x
e
lected waveform
e
measures an ex
t
e
rnal frequency.
r
nal signal by 20d
B
r
signal.
to the mains, ma
0 or 230Vac).
s
. An oscilloscope
p
ressing one of th
e
h
e knob FREQUE
N
t
incl.) to observe
t
ude of the wave
f
er range [5], an
d
ust the width of t
p
er range [5], an
ust the slope of t
h
cy [8].
o
t incl.) to observ
e
h
e CMOS LEVEL [
1
V
EL knob [12].
a
yed.
n
ge.
m
bination with the
)
. Select a positiv
e
]
.
s no attenuation
=
e
ct the output fre
q
d
the slope of the
If pushed in, the
e
DC voltage of an
t
age is 0 when th
e
o
nizing signal is T
T
ude is adjustable
a synchronising
s
x
ternal source.
in the selected fr
e
t
ernal frequency.
B
.
ke sure the AC s
e
(not incl.) is one
o
e
buttons [6]; sel
N
CY [8] to set de
s
the output signal
f
orm.
d
set the desired f
he pulse.
d set the desired
h
e ramp.
e
the output wav
e
1
2] to change th
e
©Velleman nv
FREQUENCY
e
/negative ramp
=
0dB).
q
uency.
ramp and the
waveform is
y waveform by
e
knob is
T
L pulse; when
s
ignal.
e
quency range.
When it is
e
lector [18]
o
f the best way
ect a frequency
s
ired frequency.
.
requency [8].
frequency [8].
e
form.
e
amplitude of
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