The Digital Communications
Analysis Menus
Mask Test Menu
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1X
The 1X function moves the X2 marker. The value is given as a delta value
from the X1 marker to correspond with telecommunication applications.
Moving the X2 marker moves all mask points that do not have an X value of
0. The 1X value usually represents a pulse width or bit period. For example,
to change a mask from a 1.44-Gbit pattern to a 2.88-Gbit pattern, simply
change the 1X value.
Key Path
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1X
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1 level (Y2)
The 1 level (Y2) function moves the Y2 marker that denes the horizontal
line
,
or
1
level,
where
Y=1.
Moving
the
Y1
marker
moves
all
mask
points
that
do not
have a
Y value
of 0.
The
Y2
marker
tracks
the
Y2
P
osition
softkey
.
K
ey
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1
level
(Y2)
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0
level
(Y1)
The
Y1
P
osition
function
denes
the
horizontal
line
where
Y=0.
The
Y1
marker
tracks
the
Y1
P
osition softkey
.
This
control
is
typically
set
to
the
value
that
corresponds
to
a
logical 0.
T
o
change
between
ECL
to TTL
when
viewing
the
mask,
simply
change
the
0
level
and
1
level
settings
.
K
ey
Path
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test
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Scale
mask
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0
level
(Y1)
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Default scale
When you press the
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Default scale
softkey, the analyzer sets the scaling of
the mask to be one division in from the edges of the graticule borders.
Key Path
4
Shift
54
Mask test
5
N
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Scale mask...
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Default scale
6-20
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