1.
Press
4
INSTR
PRESET
5
on
the
quasi-p eak
adapter
and
on
the
preselector.
2.
Connect
the
signal
source
to
the
correct
receiv
er
input
(
receiv
er
INPUT
2
for
this
example).
3.
T
o
select
the
preamplier
BYP
ASS
path,
press
0
4
5
on
the
switch
driv
er.
The
LED
in
the
k
ey
will
light.
4.
Set
the
quasi-p eak
bandwidth
according
to
the
frequency
range
b eing
tested.
Because
the
signal
of
in
terest
is
100
MHz,
press
4
.03-1
GHz
5;
this
sets
the
quasi-p eak
bandwidth
to
120
kHz.
5.
Press
the
NORMAL
k
ey
on
the
quasi-p eak
adapter.
6.
Set
the
sp ectrum
analyzer
resolution
and
video
bandwidths
according
to
the
table
on
the
fron
t
of
the
quasi-p eak
adapter.
F
or
a
100
MHz
signal,
set
the
bandwidths
to
1
MHz.
Note
If
y
ou
make
the
sp ectrum
analyzer's
resolution
bandwidth
m
uc
h
greater
than
the
quasi-p eak
bandwidth,
the
quasi-p eak
bandwidth
b ecomes
the
limiting
bandwidth
in
the
IF.
If
the
resolution
bandwidth
is
less
than
the
quasi-p eak
bandwidth,
the
resolution
bandwidth
b ecomes
the
limiting
bandwidth
in
the
IF
and
the
sp ecial
quasi-p eak
bandwidth
lter
w
ould
ha
v
e
no
eect.
7.
Set
the
sp ectrum
analyzer
cen
ter
frequency
to
100
MHz
and
the
span
to
1
MHz.
8.
Press
the
LIN
k
ey
on
the
sp ectrum
analyzer.
9.
Change
the
reference
lev
el
to
bring
the
signal
amplitude
near
the
top
of
the
display
.
10.
On
the
sp ectrum
analyzer,
press
4
SHIFT
5
C,
to
read
the
amplitude
in
dBV.
11.
Disconnect
the
signal
source
and
connect
the
preselector
section's
com
b
generator
output
to
the
receiv
er
input
used
in
the
measuremen
t.
Note
Before
calibrating
the
system:
Make
sure
all
equipmen
t
settings
are
correct.
Do
not
c
hange
the
resolution
bandwidth,
scale,
attenuation,
or
input
p ort
after
calibration.
(The
start
and
stop
frequencies
may
b e
c
hanged
after
calibration
if
the
frequency
range
stays
within
the
range
at
whic
h
the
receiv
er
w
as
calibrated.)
Manually
set
critical
system
parameters
man
ually
,
suc
h
as
resolution
bandwidth.
P
arameters
that
are
set
man
ually
will
not
c
hange
during
the
calibration
routine;
parameters
that
are
still
in
the
auto-coupled
mo
de
may
c
hange
during
the
calibration
routine.
4-16
Making
Typical
Measurements
HP
8572A
EMI
Receiv
er
User's
Guide