PANEL CONTROLS
AND
THEIR
FUNCTIONS
-4-
Output
terminal used
for
both
sine wave and square
wave. The Black
terminal
indicates
GND
(Case
grounded)
5.
WAVE
FORM
Output
waveform selector switch. When pressed
to
"~,,
output
signal
is
sine wave. When pressed
to
" the signal
is
square wave.
6.
FREQ.
RANGE
Oscillating frequency range selector switch
which
selects the
ranges
in 5 steps
as
follows:
X
110Hz
- 100Hz
Xl0
100Hz-1kHz
X
1001kHz
-
10kHz
X1k
10kHz-100kHz
X
10k
100kHz
-
1MHz
7.
AMPLITUDE
Amplitude
adjuster
to
continuously
vary the ampli-
tude
of
output
voltage.
8.
FREQUENCY
DIAL
This dial adjusts oscillating frequencies. Frequencies
can
be
read by
multiplying
the reading on the dial
scale
by
magnification
of
FREQ.
RANGE.
9.
DIAL
SCALE
This dial
is
calibrated
with
graduations
of
10-100
to
indicate oscillating frequencies.
10.
DIAL
POINTER
This
pointer
indicates frequencies on the dial scale.
REAR
PANEL
11.
SYNC
External synchronizing signal
input
terminals
for
GND
for
connection
of
synchronizing signal
to
the
instrument.
OUT
PUT
OutPUI
attenuator
AC
11
OV
1220V 50/60Hz
OUIPut
Circuit
Block
Diagram
DC23V
DC23V
Fig.
1
Square
wave
shapln9
r,1'CUI!
Selec.tQr
sWllch
Wlen
bridge
oscillalOf
Circuit
FRONT
PANEL
1.
This lamp
(light
emitting
diode) lights when POWER
switch (2)
is
ON.
2.
POWER
Toggle
type
switch turns on the
power
when upped.
3.
ATTENUATOR
6-position
output
attenuator
selects attenuations
of
OdB
to
-50dB
in 10dB steps.
4.
OUTPUT
The table below describes the
functions
of
panel
controls. Refer
to
the panel diagram on
page
5.
6. Power
Supply
The power supply
circuit
is
powered by
AC
110V
/
nov and delivers DC
±23V
sufficiently
stabilized by
large capacity smoothing capacitors
(2200,uF x
2)
<;Ind
a
voltage stabilizer.
EXT.SYNC
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