Purp
ose
This
test
calibrates
receiv
er
INPUT
2
of
the
EMI
receiv
er
system .
Description
\Calibration
INPUT
2
"
consists
of
t
w
o
setups.
The
rst
setup
calibrates
the
sp ectrum
analyzer
with
the
RF
preselector
in
b
ypass
mo
de.
Recall-9
calibrates
the
sp ectrum
analyzer's
cen
ter
frequency
for
narrow
resolution
bandwidths
of
10
Hz
through
1
kHz.
In
the
second
setup,
receiv
er
INPUT
2
is
calibrated
at
predetermined
p oints
for
amplitude
accuracy
using
the
com
b
generator
output.
These
p oints
are
c
hosen
b
y
the
in
ternal
calibration
sequence
(CAL
SEQ)
in
the
RF
preselector .
receiv
er
INPUT
2
is
calibrated
b et
w
een
20
MHz
and
2
GHz.
T
o
make
calibrated
measuremen
ts
with
the
EMI
receiv
er
system ,
CAL
SEQ
m
ust
b e
run
for
eac
h
set
of
EMI
receiv
er
system
settings.
This
test
runs
CAL
SEQ
at
the
settings
that
will
b e
used
in
subsequen
t
tests.
The
resulting
calibration
factors
are
stored
in
the
con
troller
memory
and
loaded
in
to
the
RF
preselector
when
they
are
needed.
3-34
T
est
Descriptions
HP
8572A
EMI
Receiv
er
User's
Guide