The Digital Communications
Analysis Menus
Mask Test Menu
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Align Mode
In instruments with rmware revision A.02.00 and above, two mask
alignment modes are available.
The Align Mode function provides access to the Mask to Wfrm function and
the Fill Display function.
Key Path
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Shift
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Mask test
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Align mode
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Mask
to wfrm
Available
with
rmware
A.02.00
and
higher
The
Mask
to
Wfrm
function
aligns
the
mask to
the displayed
waveform.
This
measurement
algorithm
needs
at
least
one
full
eye on
screen to
perform
the
alignment.
K
ey
Path
4
Shift
5
4
Mask
test
5
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Align
mode
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Mask
to
wfrm
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Fill
Display
A
vailable
with
rmware
A.02.00
and
higher
The
Fill
Display
function
optimizes
the
measurement
by
automatically
adjusting
the
vertical
and
horizontal
scales
.
The
horizontal
scale is
set
to
show
slightly
over
one
bit
period
(as dened
by the
selected mask)
centered
on
the
screen,
while
the
amplitude
is set
so that
the eye
covers
approximately four vertical divisions. In this mode, it is not necessary that a
full eye initially be displayed because the instrument automatically makes the
appropriate adjustments.
Key Path
4
Shift
54
Mask test
5
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Align Mode
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Fill display
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