3.
Select
the
maxim
um
n
um
b er
of
p oints
required
for
the
measuremen
t,
then
p erform
the
appropriate
measuremen
t
calibration.
Note
that
when
y
ou
press
the
k
ey
to
measure
the
calibration
standard,
the
HP
8510
pulse
output
signal
is
set
to
the
active
state
(RF
alwa
ys
On)
during
measuremen
t
of
the
standard.
This
assures
that
the
calibration
is
made
with
resp ect
to
the
On
p ortion
of
the
pulse
indep enden
t
of
the
trigger
dela
y
.
If
external
pulse
mo
dulation
is
used,
it
is
necessary
that
the
RF
is
On
during
measuremen
t
of
the
calibration
standard.
Sa
v
e
a
calibration
in
an
y
one
of
the
8
registers.
Measurement
1.
Set
Pulse
P
olarity
.
After
factory
preset,
the
pulse
p olarit
y
is
set
to
High
for
the
On
p erio
d
of
the
pulse
app earing
at
the
HP
8510
rear
panel
PULSE
OUTPUT
connector.
Use
the
follo wing
pro cedure
to
set
the
pulse
p olarity
.
Press:
4
SYSTEM
5
NNNNNNNNNNNNNN
MORE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PULSE
CONFIG
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PULSE
OUT:
HIGH
or
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PULSE
OUT:
LOW
.
2.
Set
Pulse
Width.
After
factory
preset,
the
pulse
width
is
set
to
10
microseconds.
Use
the
follo
wing
pro cedure
to
set
a
dieren
t
pulse
width.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PULSE
WIDTH
.
Use
the
knob,
step
k
eys,
or
n
umeric
en
try
to
set
the
desired
pulse
width.
3.
Set
Dut
y
Cycle
Limit.
After
factory
preset,
the
dut
y
cycle
limit
is
set
to
10%.
This
means
that
the
maximum
dut
y
cycle
will
nev
er
b e
allo w
ed
to
b e
greater
than
10
p ercen
t
regardless
of
the
pulse
width.
T
o
set
the
dut
y
cycle
limit,
press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DUTY
CYCLE
on
the
Pulse
Conguration
men
u.
Use
the
knob,
step
k
eys,
or
n
umeric
en
try
to
set
the
desired
maxim
um
dut
y
cycle
limit.
Note
that
the
actual
dut
y
cycle
may
b e
less.
4.
Set
T
rigger
Delay
.
After
factory
preset,
the
trigger
dela
y
is
set
to
5
microseconds.
This
means
that
the
measuremen
t
will
take
place
5
microseconds
after
time
zero.
Time
equals
zero
seconds
is
when
the
HP
8510
pulse
output
go
es
to
the
active
lev
el
turning
on
the
pulse
mo
dulator.
Use
the
follo
wing
pro cedure
to
set
the
trigger
dela
y
.
Press
4
STIMULUS
MENU
5
NNNNNNNNNNNNNN
MORE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TRIGGER
MODE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
TRIGGER
DELAY
,
then
use
the
knob,
step
k
eys,
or
n
umeric
en
try
to
set
the
desired
trigger
dela
y
.
Notice
that
if
the
trigger
dela
y
is
set
to
outside
the
time
in
terv
al
that
the
pulse
is
On,
the
trace
is
noisy
due
to
low
signal
lev
els.
5.
Connect
the
Device
Under
T
est.
Figure
3-13
sho
ws
the
resp onse
of
the
device
to
the
pulsed-RF
stimulus
o
v
er
the
curren
t
frequency
sw
eep.
Operation
3-15
Summary of Contents for 85108
Page 4: ......
Page 9: ...C Loading the System Con guration Disk Introduction C 1 Procedure C 1 Index Contents 5 ...
Page 18: ......
Page 32: ...Figure 2 3 HP 85108 System Cabling Diagram rack mounted system 2 14 System Installation ...
Page 84: ......
Page 85: ......
Page 86: ......
Page 92: ......
Page 106: ...Figure 6 5 HP 85102 Pulsed RF Signal Path 6 14 System Service and Troubleshooting ...
Page 112: ...6 20 System Service and Troubleshooting ...
Page 113: ...Figure 6 7 HP 85108A Block Diagram ...
Page 114: ......
Page 116: ......
Page 118: ...Figure 7 1 HP 85108 Replaceable Parts 7 2 Replaceable Parts ...
Page 121: ...Figure 7 2 HP 85108 Replaceable Parts Replaceable Parts 7 5 ...
Page 125: ...Figure A 1 Pulse Terms and Definitions Glossary of Pulsed RF System Terms A 3 ...
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