BWD MINI-LAB 603B Manual page 11

3.
CONTROLS
AND
THEIR
FUNCTIONS
(continued)
3.4 Signal
Source Controls; (cont'd)
3.
Function
Selector:
4.
Amplitude
Control:
5
.
DC
Offset/Ramp
Frequency
Control;
6.
Symmetry Switch:
7.
Ramp Amplitude/
Symmetry Control:
8.
AM
on-off Switch:
9.
AM
Input Socket:
10.
FM
Input socket:
11.
0-1
OV
Output
Terminal:
Three
outputs are available by selection of the correct
button, sine,
square
or triangle.
Continuously variable
control varies
output from
0-10
Volts
peak
to
peak.
This control varies
the
Ramp
Frequency.
When
the
knob
is
pulled
out, the
DC
level of the Function
Gkenerator output
can
also
be
set to
>±5V
with
respect
to
ground.
The
three position slide
switch provides, either
extension of the
4ve
or
-ve going
signal, or
waveforms with a
1:1
symmetry.
This control
has
a
dual function.
(a)
It
varies
the output amplitude of the
Ramp
Generator.
(b)
When
the
Symmetry
Switch
selects either
+ve
or
-ve
slope extension
it
adjusts
the
Magnitude
of the extension.
This
switch connects an amplitude modulator
into the
circuit so that
the output selected by the previous
controls
can be varied
in
amplitude by a suitable
control voltage.
When
the
AM
switch
Is
'ON'
a
+ve
voltage introduced
to
the socket
will
decrease
the
output
and
a -ve
voltage
increase
the output.
The
output
frequency
of the generator
can be
controlled
by
connecting a voltage
to
the
FM
input socket.
A
+ve voltage
will
increase the frequency above
that
set
by
the
Frequency
Dial
and
a negative voltage
will
decrease the frequency.
0
to
lOV
p-p
of the selected frequency
and amplitude
is
available
at
an
output
impedance
of
600Q.
12. 0-1
V
Output
Terminal: 0.01 to
l.OV p-p
of the selected
frequency and
amplitude
is
available
at
an output impedance
of
600Q.
13.
TTL Output
Terminal;
A
Square
wave
output from
OV
to
>f3V
is
always
available
at this
point.
2
603B