Protek B-810 - Amplitudo Modulation

10)
VCG
Operation
The VCG (voltage controlled generator) provides output frequency control throu h
applied
voltage
to
the
VCG
IN
terminal
By
applying
a
voltage
of
O
to
sv
to
th:
Vthe
W terminal, a frequency of up to X1000 can be obtained (The frequency mUHtipli FG
of
1000
requires
the
FREQ.
dial
setting
to
“10”
and
an
input
voltage
of
—-
SV.)
canon
The frequency modulation can be achieved by sending a modulation wave to the V
IN terminal. The input impedance is about 10k ohms. CG
Fig.
3-19
shows
the
relationship
between
the
VCG
IN
voltage
and
output
frequency
FREQ.
dial
setting
VCG
IN
(V)
Output
frequency
(multiplica
by
frequency
0.01 range mumpHH'" "
0.1
Fig.
3-19.
When
for
exam
' Pla, the fragua -
(10kHz),and
—2v¡s
.
mY'aneeIssetfor
x1kwithaFR
-
rea
-
H
n
cated by the dotte -apPH'°d to the VCG IN terminal t EQ. dm ding Of ‘10-
d line In Fig. 3-15. I he Output frequency IS 6kHz Indl-
*
22-