HP 8510 User Manual

3
Principles of Pulsed-RF Network Measurements
This chapter contains a list of terms used to describe the pulsed-RF stimulus and response.
Figure 3-1 shows a typical envelope of the pulsed-RF waveform output by the RF signal
source. For internal measurement triggering, the RF frequency and the ON time of the pulse
is controlled by the HP 8510 so that there is one pulse per measurement.
Pulse Repetition Period, PRP
The time from the 50 p ercentpoint on the rising edge of one pulse to the 50 p ercentpointon
the
rising
edge
of
the
next
pulse.
F
or
in
ternal
triggering
op
eration
the
system
PRP
dep
ends
up
on
the
instrumen
t state.
T
ypically
there
is
one
pulse
p
er
measuremen
t.
The
pulse is
turned ON
for
a
user-sp
ecied
time
and
the
measuremen
tis
made at
some
user-sp
ecied
time
relativ
e
to
the
start
of
the
pulse.
The
time
un
til
the
next
pulse
consists
rst
of
the
time
required
for
the
analyzer
to
set
up
for
the
next
measuremen
t
and
second,
if
necessary
,
w
aiting
to
satisfy
the
user-sp
ecied
pulse
width
and
dut
y
cycle
limit.
In
the
frequency
domain,
when
the
analyzer
is
tuned
to
the
next
frequency,
the
maxim
um
PRP
is
ab
out
30
milliseconds. In
the
Pulse
Prole
domain,
the
frequency
do
es
not
c
hange,
making the
maxim
um
PRP
ab
out
3
milliseconds.
With
a
v
eraging,
the
PRP
can
b
e
ab
out
1
millisecond
during
part
of
the
measuremen
t.
Other
factors
whic
h
aect
the
system
PRP
are
calibration
t
yp
e,
pulse
width,
dut
y cycle,
and pulse
prole domain
stop time.
If
the
PRP
is
con
trolled
externally
,
the
HP
8510
external trigger
input is
used to
sync
hronize
the analyzer with the pulse.
Pulse
Repetition
Frequency,
PRF
PRF
=
1
PRP
Principles
of
Pulsed-RF
Netw
ork
Measurements
3-1

HP 8510 Specifications

General

Brand	HP
Model	8510
Category	Measuring Instruments
Language	English