HP 8510 User Manual

For internal pulse mo dulation and internal triggering, time equals zero seconds is always the
point where the pulse transitions to the active level. The internal pulse mo dulator in the RF
source turns the RF pulse On when the analyzer output is p ositive, so the noisy part of the
trace will change lo cation depending on the pulse polarity.
Set Pulse Width
After instrument preset, the pulse width is set to 10 microseconds. To set a dierent pulse
width:
Press 4
SYSTEM
5
NNNNNNNNNNNNNN
MORE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PULSE CONFIG
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PULSE WIDTH .
Use the knob, step keys, or numeric entry to set the desired pulse width.
Set Duty Cycle Limit
After instrument preset, the duty cycle limit is set to 10%. This means that the maximum
duty cycle will never b e allowed to b e greater than 10 p ercent regardless of the pulse width.
To set the duty cycle limit, press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DUTY CYCLE on the Pulse Conguration menu. Use the
knob,
step k
eys, or
numeric
entry
to
set
the
desired
maxim
um
dut
y
cycle
limit.
Note
that
the
actual dut
y
cycle
ma
y
b
e
less.
Set
Measurement
Time
Span
The
HP
8510
automatically
c
ho
oses
the
minim
um
possible
(giv
en
the
HP
8510
hardw
are
and
rm
w
are
capabilities)
time
b
et
w
een
samples,
and th
us
the
measuremen
t
resolution
p
erio
d,
dep
ending up
on
the
larger
of
the
pulse
width
time
or
the
stop
time.
This
results
in
a
minim
um
p
ossible
span
time
whic
h
dep
ends
up
on
the
curren
t
n
um
b
er
of
p
oin
ts.
T
o view
the
pulse
with
minim
um
sample
resolution
p
erio
d
and
th
us
the
b
est
time
resolution,
press
4
STOP
5
,
then
rep
eatedly
press
the
9
k
ey
un
til
the
time
v
alue
at
the b
ottom of
the
grid
do
es
not
c
hange
(or
en
ter
4
STOP
5
4
0
5
4
x1
5
).
This
also
sets
the
start
time
to the
minimum
value.
If
the pulse
is longer
than this
time span,
increase
the
stop
time
to
view
the
en
tire
time
p
erio
d
of in
terest.
Set Measurement Resolution Period
To nd the resolution p erio d, press 4
MARKER
5 , then move the marker one data point and see
the
time
c
hange
in
the
Activ
e
En
try
area.
If necessary
,
adjust
the
resolution
p
erio
d
to
the
v
alue
required
for
your
measuremen
t
b
y
c
hanging
the
stop
time,
pulse
width,
and n
um
b
er
of
p
oin
ts.
Connect the Device under T
est
With the pulse width set, connect the device under test. Figure 7-4
shows the response of the
device to the pulsed-RF stimulus at the curren
t frequency
.
Pulse
Profile
Domain
Measurements
7-5

HP 8510 Specifications

General

Brand	HP
Model	8510
Category	Measuring Instruments
Language	English