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HP 3312A Service Manual

HP 3312A
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Model
3312A
Section
JH
TH
MULTIPLE
|
SINGLE
~
TRIG
SINGLE/MULTIPLE:
S19
selects
single
cycle
or
multiple
cycles
in
the
burst
mode.
TRIGGER:
$20
selects
either
an
interna!
or
external
trigger,
EXTERNAL
TRIGGER
INPUT:
for
externaf
burst
con-
trol,
VCO:
Input
for
an
external
frequency
control
voltage
{Paragraph
3-66}.
ORDE
DES
250
m
AT
FUSE
i25
mAT
FUSE:
F1
protects
the
instrument
from
current
over-
foading.
100/120/220/240:
$23,
$24
slide
switches
to
match
the
instrument
to
ac
line
voltage
being
used.
POWER
RECEPTACLE:
Primary
power
is
connected
to
the
instrument
via
the
power
cord,
Figure
3-2.
Rear
Panel.
By
connecting
the
SYNC
output
to
the
input
of
an
appropriate
frequency
measuring
device,
the
output
fre-
quency
can
be
set
with
greater
accuracy
and
resolution.
The
SYNC
output
can
also
be
used
to
trigger
an
oscilloscope
or
synchronize
an
external
oscillator.
3-20.
Input
Constraints.
3-21.
The
3312A
inputs
and
outputs
are
dc
coupled.
The
maximum
instantaneous
ac
plus
de
voltages
which
can
be
safely
applied
to
the
inputs
are
+
10
V.
In
some
applica-
tions
it
may
be
necessary
to
connect
one
of
the
3312A
outputs
to
an
ac
or
de
source
node
in
a
circuit.
In
these
cases,
the
de
plus
instantaneous
value
of
external
signal
level
applied
to
the
3312A.
outputs
must
not
exceed
t
IOV:
Exceeding
input
or
output
voltages
of
+10
V
{de
plus
instantaneous
ac)
can
cause
damage
to
the
input
or
output
circuitry
of
the
3312A.
3-22.
Modulation
Generator
Input/Output.
3-23.
The
BNC
connector
of
the
modulation
generator
(labeled
MOD)
serves
as
both
an
input
and
an
output.
The
waveforms
from
the
internal
modulation
generator
(sine,
square
or
triangle)
are
available
at
the
MOD
connector
and
are
useful
for
synchronizing
an
oscilloscope
when
using
the
AM,
FM,
or
sweep
modes.
When
none
of
the
modulation
generator’s
function
buttons
is
pressed,
an
external
modula-
tion
source
can
be
applied
through
the
MOD
connector.
Refer
to
Paragraph
3-46
for
information
concerning
exter-
nal
operation.
3-24.
The
modulation
generator
input/output
is
dc
coupled
and
the
impedance
is
a
nominal
8
kilohms.
Refer
to
Table
3-1
for
recommended
cable
assemblies
to
use
with
the
modulation
generator.
3-25.
Output
Characteristics.
3-26.
The
main
generator
and
the
modulation
generator
supply
five
different
output
waveforms.
a.
Sine
b.
Square
c.
Triangle
d.
Ramp
e.
Pulse
3-3

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HP 3312A Specifications

General IconGeneral
BrandHP
Model3312A
CategoryInverter
LanguageEnglish

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