Tektronix 2247A

Basic Applications
6.
Use
the
SET
MEAS'MT
CHANNEL
menu
cholces
to
select
the
desired
channels to make the time measurements on.
7.
Set
the
OR
DELAY
control
so
that
the
reference-delay
intensified
zone
Is
positioned
at
the
first
point
of
interest
(point
A,
Figure
5-6)
and
the
B
sweep
display
of
that
point
is
at
the
center
vertical
graticule
line.
8.
Set
the
-4
control
so
that
the
delta—delay
intensified
zone
Is
positioned
at
the
second
point
of
Interest
(point
B,
Figure
5-6)
and
the
B
sweep
dis-
Play
of
that
point
Is
at
the
center
graticule
line.
The
time
difference
between
the
two
points
of
interest
is
displayed
at
the
top
of
the
screen.
Once
the
measurement
points
are
Identified,
the
A
Intensified
Sweep
traces
may
be
removed
from
the
display
for
ease
In
viewing
the
B
Sweep
traces
by
switching
to
B
Delayed
Horizontal
MODE.
In
B
Horizontal
MODE,
exact
placement
of
the
two
delays
may
be
obtained
by
positioning
one
trace
over
the
other and
then
aligning
the
measurement
point
using
the
-4
control.
Additional
resolution
may
be
obtained
by
advancing
the
B
SEC/DIV
NOTE
When
making
delay
measurements
between
two
different
signals
for
time
or
phase
difference,
the
SET
MEAS'MT
CHANNEL
choices
must
be
set
to
the
correct
measurement
source
channel
to
obtain
the
desired
measurement
results.
BOTH
delays
must
be
set
to
the
same
channel
source
for
making
period,
pulse
width,
or
rise-time
and
fall-time
measurements.
If
only
a
single
channel
is
selected
for
dis-
play,
both
delays
will
default
to
that
channel.
If
a
channel
is
selected
as
a
measurement
source,
it
will
be
turned
on
if
not
already
on;
but
it
will
not
be
turned
off
when
deselected
as
a
measurement
source.
Extra
display
channels
must
be
turned
off
using
the
VERTICAL
MODE
buttons.
If
a
channel
's
displayed
but
not
selected
as
a
measurement
source,
that
waveform
trace
will
not
be
intensified,
and
no
alternate
B
Delayed
trace
will
be
displayed
for
that
channel.
switch
setting
to
further
expand
the
B
Sweep
traces.
2247A Operators
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