BWD MINI-LAB 603B Manual page 18

OPERATION
(continued)
Operation
of the
Function
Generator
(continued)
I
4
I
i
I
1
I
I
I
I603B
If it is
required
to
control the
frequency with on
external voltage, the lead from
the
RAMP
output can
be disconnected and
the external voltage
fed into
the
F.M.
input socket.
The voltage/frequency
relationship
is
shown by
the
graph
on
the opposite
page, but
no upper
limit
indication
is
available.
To
show
the effect of
50Hz
sinewave modulation, connect
the 6.3V
AC
source
to
the
A.M.
input as
shown
to
produce
the
waveform shown below:-
nm
Operation
of the
Power
Amplifier;
Set
the
controls as
shown below:-
4-5