:
,
:
,
,
10
2. Square wave voltage
Set switch "
'V/
'L"
(SK3)
to
position"
'L".
The
output
voltage
at
sockets BU1-BU2 can be adjusted
with
knob
"
AMPLITUDE"
(R2)
between
appro
ximately 6
mV
p-p
and
4 Vp_p (unloaded).
The
output
voltage consis
ts
of
a square wave voltage
which
is
superimposed
on
a negative d.
c.
voltage, equal
to
half
the
amplitude
of
the
square
wave voltage.
To
obtain
a square wave voltage
which
is
symmetrical
with
respect
to
the
zero
line, a
circuit
should be used for changing
the
d.c.
voltage leve! (in this case, a capacitor).
The
value
of
this capacitor
depends
entirely
on
the
input
impedance
of
the
circuit
to
be fed
and
on
the
frequency.
For
thi
s reas
on
no
capacitor has been
fitted
in
the
apparatus.
Note:
When
using
the
sinusoidal
or
the
square wave voltage,
it
is
recom-
mended
that
the
output
voltage of
the
generator
is
measured
with
a
voltmeter
with
a
high
input
impedance for obtaining accu-
rate
me
asurements. By
doing
so,
the
exact value
of
the
voltage
which
is
applied
to
the
circuit connected will be
known.
SERVICE
Technical
descl
A.
INTRODUC
The
ge
for tur
The
Ol
po
s
mo
100 kc
range s
The
an
2
Vrm
s:
B.
THE
OSCILL.
In the
the let
oscillat
From
t
ing the
by swit
branch(
possiblE
potenti
ed.
Tri
highest
plifier 1
Trimm
at 10 k
