4.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
LOAD
FILE
.
5.
Remo
v
e
the
disk
when
the
le
is
loaded.
Setting
Source
1
P
o
w
er
Lev
el
The
p o
w
er
lev
el
of
source
1
is
set
to
+7
dBm
b
y
Instrumen
t
State
8
of
the
system
conguration
disk
(provided
le
MD
PULS
or
MD
PULS
A
has
b een
loaded).
This
p o
w
er
lev
el
will
not
cause
an
IF
O
VERLO
AD
on
most
systems.
F
or
maximum
dynamic
range
the
p o
w
er
lev
el
of
source
1
can
sometimes
b e
increased
a
few
dB.
T
o
determine
and
set
the
maximum
p o
w
er
lev
el,
p erform
the
follo wing
pro cedure.
1.
Press
INSTR
UMENT
ST
A
TE
4
RECALL
5
NNNNN
4
.
This
will
recall
a
four
parameter
split
display
and
set
the
net
w
ork
analyzer
to
nonpulsed-RF
op eration.
2.
Press
STIMULUS
4
MENU
5
NNNNNNNNNNNNNN
MORE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
POWER
MENU
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
POWER
SOURCE
1
.
3.
Using
the
ENTR
Y
8
k
ey
,
increase
the
p o
w
er
lev
el
b
y
1
dB.
W
ait
for
one
complete
trace,
and
if
an
IF
O
VERLO
AD
message
do es
not
app ear,
increase
the
p o
w
er
b
y
1
dB
again.
W
ait
another
complete
trace.
4.
Repeat
the
p o
w
er
incremen
ts
un
til
an
IF
O
VERLO
AD
message
app ears,
then
decrease
the
p o
w
er
lev
el
b
y
1
dB.
5.
Press
INSTR
UMENT
ST
A
TE
4
SA
VE
5
NNNNN
4
to
sa
v
e
the
maximum
p o
w
er
lev
el
in
register
4.
6.
The
maximum
p o
w
er
lev
el
m
ust
b e
reset
for
the
remaining
instrumen
t
state
registers:
1,
2,
3,
5,
6,
7,
and
8.
Press
INSTR
UMENT
ST
A
TE
4
RECALL
5
NNNNN
n
.
Press
STIMULUS
4
MENU
5
NNNNNNNNNNNNNN
MORE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
POWER
MENU
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
POWER
SOURCE
1
and
set
the
p o
w
er
lev
el
to
the
v
alue
in
step
four.
7.
Press
INSTR
UMENT
ST
A
TE
4
SA
VE
5
NNNNN
n
(n=the
register
n
um
b er
selected
in
step
6).
8.
Repeat
steps
6
and
7
for
the
remaining
instrumen
t
states.
Signal
P
ath
Check
Lo ok
for
the
follo wing
items
in
the
signal
paths:
Running
errors
{
there
should
not
b e
an
y
.
P
o
w
er
lev
els
at
the
markers
{
should
b e
within
64
dB
of
the
traces
sho
wn.
P
o
w
er
dips
or
p o
w
er
holes
{
none
greater
than
10
dB.
Note
The
p o
w
er
lev
el
in
wide
BW,
pulsed-RF
mo
de
is
t
ypically
within
1
dB
of
the
lev
el
for
normal
BW,
nonpulsed-RF
op eration
except
at
the
bandcross
p oints
near
2.4,
7,
and
13
GHz.
Checking
a1
and
a2
Signal
P
aths
a1
path
1.
Place
a
3.5
mm
50
termination
on
p ort
1.
2.
Press
INSTR
UMENT
ST
A
TE
4
RECALL
5
NNNNN
2
.
This
brings
up
a
display
similar
to
Figure
6-3 .
6-10
System
Service
and
Troubleshooting
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 ...
Page 126: ......
Page 132: ......
Page 136: ......
