Operating
Instructions—7A42
Press
the
B
pushbutton
74
and then
the
CH4
pushbutton
73.
Adjust
the time
base
Holdoff
control
for
a
stable
display.
Vary
the
pulse
generator
Delay
control
and
notice
that
a trigger
is displayed
on
the
TRIG
VIEW
trace
76
while
the
CH4
pulse
77
is
HI,
regardless
of
the
CH1
signal
78
being
HI
or
LO.
Set
the
pulse
generator Variable
Delay
control
so
that
one
of
the
CH4
pulses
is
centered
during
the
time
that
the
CH1
signal
is
LO.
Now
adjust
the
time-base
Holdoff
control
for
an
unstable
display
7S.
2-46