Tektronix 2247A

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43
e
Lee
4
x
ey
Basic Applications
A
FIRST POINT
OF
INTEREST
TIME
DIFFERENCE
CH44C
le]
SE
«A
U=
&
B
REFERENCE
SECOND
POINT
GRATICULE
LINE
OF INTEREST
6556-32
Figure 5-6. Time difference between the two delays.
Track Trigger Level Cursors
For
most
general
purpose
applications,
the
AUTO
LEVEL
Trigger
MODE
provides
the
user
with
the
easlest
method
to
obtain
stable
waveform
trig-
gering.
When
information
regarding
the
actual
trigger
level
setting
Is
needed
to
set
special
triggering
levels
for
NORM
or
SGL
SEQ
triggering,
the
user
may
use
the
TRACKING
CURSORS
features
of
the
oscilloscope.
The
TRACK
TRIG
LVL
cursors
provide
both
a
visual
Indication
of
location
and
a
numeric
readout
of
the
Trigger
LEVEL
control
setting.
In
ALT
Horizontal
MODE
(with
the
A
Intensified
and
the
B
Delayed
traces
both
displayed)
the
A
and
the
B
TRACK
TRIG
LVL
cursors
will
be
displayed
(see
Figure
5-7).
The
A
Trigger
LEVEL
may
be set
when
the
trigger
controls
are
directed
to
2247A
Operators
5-17