HP 83480A User Manual

General Purpose Oscilloscope Menus
Dene Measure Menu
NOTE
When selecting a standard mask from the Standard Mask menu of the HP 83480A, the correct color
grade signal type is automatically selected.
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Eye
window
1
and
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Eye
window
2
The
Eye
Window
function
is
used
to
dene
the
portion
of
a
bit
over
which
an
eye
diagram
will
be
characterized
using
automatic
eye
measurements
.
Refer
to
Chapter
6
for
additional
information
on
making
automatic
eye
measurements
.
Eye
window
1
denes
one
boundary
of
the
eye
and
Eye
window
2
denes
the
second
boundary
.
V
alues
are
entered as
a percentage
of
bit
width.
F
or
example
,
if
extinction
ratio
is
to
be characterized
over a
complete
bit
interval,
one
window
boundary
should
be
set
to
0%, and
the other
window
boundary
is
set
to
100%.
If
the middle
20% of
the eye
is to
be
characterized,
one
window
boundary
should
be
set
to 40%,
and the
other window
boundary is
set to 60%.
For certain eye measurements, when markers are set to measurement,
Marker X1 is set to Eye window 1 and Marker X2 is set to Eye window 2.
Regardless of the values of Eye window 1 and Eye window 2, the window is
the
area
between
them.
Key Path
4
Dene meas
5
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Color grade...
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Eye window 1
4
Dene
meas
5
NNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNN
Color grade...
NNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNN
Eye window 2
10-17

HP 83480A Specifications

General

Brand	HP
Model	83480A
Category	Measuring Instruments
Language	English