Agilent Technologies 83620A - 13. ALC Power Level Accuracy Adjustment

13.
AL
C
P
o
w
er
Lev
el
Accuracy
Description
and Procedure
This adjustmen
t sets
the
absolute
p
o
w
er
accuracy
in
eac
h
frequency
band
at
a
CW
frequency
.
The
digital
ALC
calibration
arra
y
is
loaded
with zeros
for
the
0
dB
attenuator
setting to
eliminate an
yp
o
w
er
oset
from
this
source.
Calibration constan
ts
set
the
p
o
w
er
accuracy
at
four
p
o
w
er
lev
els.
A
p
oten
tiometer
sets
the
p
o
w
er
accuracy
at
an 18
dBm lev
el in
the
lo
w
band
(not
applicable
for
all
mo
dels).
Note
This
adjustmen
t
pro
cedure
zeros
the
digital
ALC
calibration
arra
y
at
the
0
dB
atten
uator
setting.
The
\P
o
w
er
Flatness"
adjustmen
t
m
ust
b
e
p
erformed
after
this
pro
cedure.
1.
Preset
the equipmen
tsho
wn
in
Figure
3-24
and
let
them
w
arm
up
for
at
least
one
hour.
Do
not
connect
the
p
o
w
er
sensor to
the
syn
thesizer
RF
OUTPUT
y
et.
Figure 3-24. ALC P
ower Lev
el Accuracy Adjustment Setup
HP 8360 Adjustments
ALC Power Level Accuracy
3-91
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