Velleman DVM20FGCN2 Manual de usuario descargar pdf (Pagina 4)

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

1 2 3 4 5 6 7 8 9 ... 18 19

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