Agilent Technologies 83620A - AM Accuracy

16.
AM
Accuracy
Description
and Procedure
This pro
cedure consists
of
three
adjustmen
ts.
Calibration
constan
t
#277,
AM
Oset,
is
adjusted
for
no
c
hange
in
RF
output
p
o
wer
when AM
is enabled
but
no
v
oltage is
applied. EXP
AM CAL
is adjusted
for
a
0
10
dB
c
hange
in
po
w
er
when
0
1.00V
is
applied
and
AM
10
dB/V
is
selected.
LIN
AM
CAL
is
adjusted
so
that
a
0
0.80V
AM
input
(100%/V
AM
selected)
causes
the RF
output
to
decrease
to
4.00%
of
its
initial
v
alue.
1.
T
urn
on
the instrumen
ts sho
wn in
Figure 3-28
and
let
them
w
arm
up
for
at
least
one
hour.
2.
Zero
and
calibrate
the
p
o
w
er
meter/sensor.
3.
Connect
the
equipmen
tas
shown
in
Figure
3-28
.
Figure 3-28. AM Accuracy Adjustment Setup
3-102 Adjustments
AM Accuracy
HP 8360
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