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SECTION
I
INTRODUCTION
AND
GENERAL
DESCRIPTION
SCOPE
This
instruction
manual
provides
instructions for operation, calibration,
and
maintenance
of
WAVETEK
Series 150
Programmable
Voltage-Controlled
Gen-
erators.
GENERAL
DESCRIPTION
The
WAVETEK
150 Series
Programmable
Voltage-Controlled Generators are
solid-state,
multi-purpose
function
generators which produce
sine,
triangle
and square
wave
outputs.
The
150 Series includes
the
Model
150
and
the
Model
155.
Both
models
are completely
programmable,
using
binary-coded-deci-
mal
(BCD)
control
of
frequency and amplitude.
Frequency,
waveform
function,
and
signal
amplitude are
selected
by remote
contact closures or
logic levels.
Both
models
provide continuous and triggered operating
modes.
The
Model
155 also includes local control
by
front panel
digital
switches
which
allow
man-
ual control
of
frequency,
waveform
function,
amplitude, and range.
The
programmed
BNC
output
of
the
150 Series
instruments provides any one
of
the
three
waveform
signals
at
any amplitude between
10 millivolts
and
10 volts,
peak
to
peak,
into
a 50
jt
load.
The
output
frequency range
is 0.
01
Hz
to
1
MHz,
in
eight
ranges.
An
analog voltage
input
(VCG)
will
vary
the
frequency through
each range
to
a
maximum
of Z0:1.
Both
models
also provide
simultaneous
sine,
triangle,
and square
wave
outputs
with constant amplitude over
the
entire
frequency range
of the
instrument.
The
output
impedance
of
all
outputs
is
50rL.
The
output signals
may
be continuous or
may
be triggered
by
a
5
volt
gate
or
pulse
input.
The
trigger
input
may
be
specified for
either
polarity.
In the
trig-
gered
mode,
at
least
one
complete
cycle
is
generated
for
each
trigger pulse.
The frequency
of
the
cycle
is
determined by
the
programmed
frequency and
range.
If
a gate voltage
is
applied
to
the
trigger
input,
numerous
cycles
at the
programmed
frequency are generated during
the
period
of the
gate.
A
trigger
pulse
of
shorter duration than one cycle
of
the
frequency being generated
will
produce one
cycle.
Series
150
instrument are 5-1/4
inches
high,
16
inches deep, and
19
inches
wide,
and are contained
in
an enclosure which
fits
a
standard
RETMA
19-inch
relay rack.
The
solid-state electronic circuits
are contained on plug-in glass-
epoxy
circuit
boards, interconnected through
a
mother
board.
An
extender
board
is
included
in
each
instrument,
to
allow
circuit
boards
to
be
operated
while
extended
outside
the
enclosure.
The modular
construction
facilitates
1-1
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