Automated
Measurements
Using
Receiv
er
INPUT
3
Note
T
o
determine
the
corrected
signal
lev
el,
subtract
the
gain
from
the
measured
signal
amplitude.
Be
sure
to
calibrate
y
our
receiv
er
b efore
making
this
measuremen
t.
F
ollo
w
all
the
amplitude
accuracy
considerations
discusse
in
\When
to
Calibrate
Y
our
Receiv
er"
at
the
b eginning
of
this
c
hapter.
Calibration
data
is
supplied
on
t
w
o
disks,
for
HP
9000
Series
200/300
con
trollers
using
the
HP
BASIC
programming
language
(see
HP
8571A/8572A
EMI
R
e
c
eiver
1
GHz
to
22
GHz
Calibr
ation
Data
Manual
).
Both
the
single-sided
and
the
double-sided
disk
con
tain
the
same
t
w
o
les:
BD
A
T
for
use
with
op eration
v
erication
softw
are.
Gain
T
able
pro
vided
as
ASCI I
data
in
CITIle
data
format.
It
can
b e
used
b
y
the
HP
85869A
EMI
Measuremen
t
Softw
are
with
Revision
A.03.00
or
later.
A
\Softw
are
T
o olb
o
x"
disk
con
taining
utilities,
example
programs,
do cumen
tation,
and
sample
data
les
for
CITIle
format
is
a
v
ailable;
order
HP
part
n
um
b er
85103-10002.
Be
sure
to
use
the
correction
factor
for
the
appropriate
sp ectrum
analyzer
attenuation
setting;
data
is
pro
vided
for
0
dB
and
10
dB
attenuation.
T
o
give
y
ou
a
general
view
of
receiv
er
resp onse,
the
calibration
data
also
is
plotted
on
the
display
as
a
20-p oint
moving
a
v
erage.
This
graphic
format
sho
ws
correction
factors
for
b oth
0
dB
and
10
dB
sp ectrum
analyzer
attenuation.
Figure
1-2
is
an
example
of
this
format.
Use
the
calibration
table,
sho
wn
in
Figure
1-1 ,
to
determine
actual
signal
amplitude.
1-12
Calibrating
Y
our
Receiv
er
HP
8572A
EMI
Receiv
er
User's
Guide