This
o ccurs
b ecause
when
the
pulse
is
O,
the
net
w
ork
analyzer
is
measuring
the
ratio
of
noise
to
noise,
and
since
the
noise
is
appro
ximately
equal
in
the
reference
and
test
signal
paths,
the
result
is
near
0
dB
with
resp ect
to
the
On
p erio
d
of
the
pulse.
Also,
in
this
measuremen
t,
some
large
spik
es
may
b e
seen
in
the
noisy
part
of
the
trace.
If
the
noise
in
the
reference
c
hannel
instantaneously
go
es
to
a
v
ery
small
v
alue,
the
ratio
will
increase
to
a
v
ery
large
v
alue.
Note
In
the
Pulse
Prole
domain:
Without
a
v
eraging,
pulse
width
and
dut
y
cycle
settings
resulting
in
less
than
ab out
3
milliseconds
PRP
will
not
c
hange
the
actual
system
PRP
.
With
a
v
eraging,
pulse
width
and
dut
y
cycle
settings
resulting
in
less
than
ab out
1
millisecond
PRP
will
not
c
hange
the
actual
system
PRP
.
Also,
the
PRP
and
dut
y
cycle
can
v
ary
during
the
sw
eep.
T
o
learn
more
ab out
con
trol
of
these
v
alues,
refer
to
the
General
Timing
Information
c
hapter.
Frequency
Domain
Check
1.
Press
4
DOMAIN
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
FREQUENCY
.
2.
If
the
W
annotation
do es
not
app ear,
press
4
SYSTEM
5
NNNNNNNNNNNNNN
MORE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PULSE
CONFIG
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DETECTOR:
WIDE
BW
.
3.
Press
4
MARKER
5,
then
mov
e
the
marker
to
v
arious
p oints
on
the
trace.
4.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PULSE
WIDTH
and
set
the
pulse
width
to
10
microseconds.
Figure
5-6.
S
11
,
Frequency
Domain,
Pulse
Width
10
s,Trigger
Delay
5
s
Operating
the
HP
8510
for
Pulsed-RF
Measurements
5-7
Summary of Contents for 8510
Page 5: ......
Page 12: ...Figure 1 1 HP 8510 Pulsed RF Network Analyzer System Introduction 1 3 ...
Page 13: ......
Page 17: ...Figure 2 2 HP 85110A S Parameter Test Set Signal Flow 2 4 System Description ...
Page 21: ......
Page 27: ...Figure 5 1 System Cable Connections 5 2 Operating the HP 8510 for Pulsed RF Measurements ...
Page 35: ......
Page 39: ......
Page 47: ......
Page 57: ......
Page 67: ......
Page 72: ...Figure 11 1 Option 008 Domain Stimulus and System Menus Reference Data 11 5 ...
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