8.
On
the
oscilloscop
e:
a.
Adjust the
timebase
dela
y
to
p
osition
the
rising
edge
of
the
pulsed
RF
near
the
cen
ter
of
the
displa
y
.
b.
Adjust
the c
hannel 1
volts/division
and oset
to
obtain
a
5
division
signal
lev
el
b
et
w
een
the
RF
p
o
w
er
o
and the
RF p
ow
er on
(see
Figure
2-19
).
c. Adjust
the c
hannel
1
oset
to
mo
v
e
the
RF
p
o
w
er
o
line
one-half
division
b
elo
w
the
nearest
horizon
tal
graticule
(making
the
horizon
tal
graticule
cross
the
w
a
veform
at the
10% p
oin
t.)
d.
Use
the
oscilloscop e's
delta
T
function
to
measure
the
time
dierence
b
et
w
een
the
10%
and
90%
risetime
p
oin
ts
on
the
en
v
elop
e.
(The
10%
p
oint
of the
risetime
is
where
the
pulse
en
v
elop
e
crosses
the
graticule.
The
90%
p
oin
tis
4 divisions
up.) Record
this v
alue
in
T
able
2-19
.
Figure 2-19. Signal Lev
el betw
een RF P
ower
Off and On
9. Adjust the timebase dela
y to p osition the falling edge of the pulse near the
center of the oscilloscop e displa
y.
10. Measure the falltime the same w
ayas y
ou measured the risetime.
(See step 8.) Record this value in Table 2-19.
2-80 Performance Tests
Pulse Performance (Alternate)
HP 8360