HP 83480A - Page 314

General Purpose Oscilloscope Menus
Trigger Menu
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External Scale
The External Scale function can be used when the trigger signal level changes
due to the use of an attenuator or a probe. The attenuator factor can be
entered either as a decibel value or a ratio.
Key Path 4
Trigger
5
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External Scale
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
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a
Level
Level
species
the
voltage
threshold
that
a
signal
must cross
in
order
for
the
instrument
to
trigger
on
that
signal.
Y
ou can
use
the
knob
,
arrow
keys
,
or
keypad
to
change
the
trigger
level.
Y
ou
can
adjust
the
trigger
level
from
within
any
of
the
trigger
submenus
.
The
trigger
level
setting
also
determines
what
the
instrument
uses
as
a
reference
to
determine
a
high
or
low
.
A
high
is
a
voltage
above
the
trigger
level,
and
a
low
is
a
voltage
below
the
trigger
level.
K
ey
Path
4
Trigger
5
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N
N
level
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