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HP 3325B User Manual

HP 3325B
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Operation
and
Reference
The
Mod
Source
Frequency
is
entered
by
pressing
the
[Shift]
key
followed
by
the
[Freq]
key.
The
Modulation
Source
indicator
illuminates
to
indicate
the
display
contains
a
modulation
source
value.
The
sine
wave
frequency
values
range
from
0.1
Hz
to
10
kHz
with
2-digit
resolution.
The
square
wave
frequency
values
range
from
0.1
Hz
to
2
kHz
with
2-digit
resolution.
The
modulation
signal
is
momentarily
disabled
during
modulation
frequency
changes.
The
Modulation
Source
is
a
free-running
signal
which
is
not
phase-locked
to
the
Main
Signal
output
or
External
Reference
input.
It
has
no
DC
offset
or
phase
parameters.
The
Modulation
Source
output
is
intended
to
drive
high
impedance
inputs
and
should
not
be
terminated
in
50n.
It
may
be
connected
to
both
modulation
inputs
at
the
same
time
but
the
extra
loading
may
draw
the
output
signal
voltage
down.
Arbitrary
Waveforms
The
modulation
source
may
be
programmed
as
an
arbitrary
waveform
source
by
a
computer
via
HP-IB
or
RS-232.
Once
programmed,
the
waveform
is
retained
in
nonvolatile
memory
and
may
be
initiated
from
the
front
panel.
Select
the
arbitrary
waveform
with
the
[Shift]
Mod
Source
square
wave
key
which
illuminates
the
Arb
indicator.
The
repetition
rate
of
the
arbitrary
waveform
is
set
with
the
[Shift]
[Freq]
key.
Repetition
rates
range
from
0.1
Hz
to
10
kHz
(the
HP
3325B
adjusts
the
value
to
compatible
internal
frequencies).
The
default
waveform
is
dc
(after
memory
is
cleared).
Disabling
Modulation
Modulation
is
disabled
by
pressing
the
[AM
Off]
([Shift]
[Recall])
key
or
[OM
Off]
([Shift]
[-])
key.
The
extinguished
AM
or
OM
modulation
I’
_indicators
provide
a
visual
indication
that
modulation
inputs
are
disabled.
1
~
)
2I<H2
6
1-30

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HP 3325B Specifications

General IconGeneral
BrandHP
Model3325B
CategoryPortable Generator
LanguageEnglish

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