HP 83480A User Manual

General Purpose Oscilloscope Menus
FFT Menu
Figure
10-4.
An
FFT
display
.
Y
ou
may
also
notice
that
there
are
three
horizontal
lines
of
numbers
below
the
graticule
area.
The
rst
line
lists
the
horizontal
scale
and
position
settings
of
the
time
domain.
The
second
line
lists
the
vertical
and
horizontal
settings
of
the
FFT
.
It
is
labeled
\FT"
for
F
ourier
transform.
The
third
line
lists
the
vertical
scale and
oset
settings
of
channel
2.
Because
the frequency
domain
may
be
new
to
you,
let's
look
at
the
second
line
of
numbers
.
The
rst number
is the
vertical scale
in dB/div
.
The
second
number
is
the
oset
in
dBm at
the center
of the
lower graticule
area.
The
third number is the horizontal scale in frequency/div. The fourth number is
the center frequency value.
To maximize the use of the display area, some of the instrument's features
share the lower area of the display. The vertical settings and automatic
measurement results share the same area of the display; the marker results,
statistics
results
,
and
the
horizontal
settings
of
the
frequency
domain
share
the
same
area
of
the
display
.
10-30

HP 83480A Specifications

General

Brand	HP
Model	83480A
Category	Measuring Instruments
Language	English