HP 1821A Manual page 17

Model 1821A
Section
III
Figure 3-5
Set up
main sweep
as explained
in
Figure 3-3.
1.
Rotate
the
Delayed
TIME/DIV
control
ccw from OFF.
2.
Set
Delayed Trigger Source
to
INT,
EXT,
or
EXT
-i-
10 as desired.
(If
EXT
or
EXT
-|-
10
is
selected, connect trigger
to
EXT
INPUT.
3.
Set
Delayed Trigger Coupling
as desired.
4.
Set Delayed
SLOPE
as desired.
5.
Adjust Delayed
TRIGGER LEVEL
for
an
intensified
display.
(If
intensified display does
not appear,
set
DIV
DELAY
to 1.)
6.
Adjust
DELAY
(DIV)
to
intensify desired
signal.
7.
Set
Sweep
Display
to
DELAYED
and observe previous-
ly intensified portion
of signal.
8.
Set
Delayed
VERNIER
to
CAL.
9.
Set Delayed
TIME/DIV
as desired.
Note
The
dotted horizontal
lines
on the
CRT
are
the
10% and 90%
references.
Figure 3-5.
Rise
Time Measurements
02591-3
3-5