HP 3312A Service Manual

Section HI
3-27, Sine Wave Output.
3-28.
The
Total
Harmonic
Distortion
(THD)
of
the
main
sine
wave,
including
spurious
and
harmonics,
is
less
than
0.5%
from
10
Hz
to
50
kHz
and
greater
than
30
dB
below
fundamental
from
50
kHz
to
13
MHz.
The
modulation
sine
wave
distortion
is
less
than
2%
THD
from
10
Hz
to
10
kHz.
3-29. Square Wave Output.
3-30,
The
RMS
value
of
a
symmetrical
(50%
duty
cycle)
square
waveform
is
equal
to
its
peak
value.
The
rise
or
fall
time
is
less
than
18
nanoseconds
between
the
10%
and
90%
‘ety
points
of
the p-p
output
square
wave.
The
abérrations,
or
deviations
from
the
final
settling
amplitude
of
the
square
wave
after
overshoot,
will
not
vary
more
than
+
10%
of
the
final
value.
3-31. Triangle Output.
3-32,
The
RMS
value
of
the
triangle
waveform
is
0.557
times
the
peak
value.
The
triangle
ramp
will
not
deviate
from
a
straight
line
any
more
than
1%
of
the
total
peak-to-peak
value
of
the
ramp.
Nonrrlinearity
is,
therefore,
negligible.
3-33. Ramp.
3-34,
A
ramp
output
can
be
obtained
from
the
main
generator
by
selecting
the
triangle
waveform
and
adjusting
the
symmetry
control
knob.
The
ramp
output
of
the
main
generator
can
be
varied
in
amplitude
with
the
AMPLITUDE
knob.
The
ramp
output
of
the
modulation
generator
has
a
fixed
amplitude,
however,
the
slope
or
retrace
time
can
be
varied
with
the
SYM
knob
on
the
modulation
generator.
3-35. Pulse.
3-36.
A
pulse
with
a
variable
amplitude
from
0
V
to
20
V
pp
into
an
open
circuit,
is
possible
with
the
main
generator.
This
involves
selecting
single
cycle
burst
set
to
start
at
the
zero
point
with
the
TRIGGER
PHASE
knob,
and
determining
the
pulse
width
with
the
FREQUENCY
dial.
The
SYNC
output
can
deliver
a
<10
nsec
rise
time
pulse
by
changing
the
symmetry
of
the
main
generator.
3-37. Gate or Burst.
3-38.
The
usable
frequency
range
of
the
burst
function
is
from
0.1
Hz
to
10
MHz.
The
trigger
phase
can
be
started
anywhere
from
-
80°
to
+90°.
The
stop
will
be
at
that
point
at
the
termination
of
the
burst
(see
Figure
3-3).
3-39. AM.
3-40,
The
Main
Generator
output
can
be
amplitude
modu-
lated
up
to
100%.
The
modulation
frequency
ranges
from
0.01
Hz
to
10kHz.
Any
of
the
modulation
generator’s
functions
can
be
used
to
AM.
3-4
Model 3312A
33124~8 3964
TITTTTTT
Ål A Å |
mL AtA NANA AA
| H EN PA |
33124-8 3964
Figure
3-3.
Phase
Control
of
Burst.
NOTE
The
3312A
is
capable
of
>
100%
modulation,
ie.,
the
strength
of
the
modulating
signal
can
be
greater
than
needed
to
just
bring
the
carrier
level
to
zero,
Overmodulation
may
cause
distor-
tion
of
the
modulating
information.
3-41.
The
extent
of
the
amplitude
variation
is
expressed
as
the
percentage
of
modulation.
The
following
formula
defines
the
relationship
between
Fo
and
Fm
(see
Figure
3-4),
Emax- Fo X 100 = percent modulation
Eg
331293797
Figure 3-4, Percent Modulation.

HP 3312A Specifications

General

Brand	HP
Model	3312A
Category	Inverter
Language	English