calibration
constan
t
to
the
low
er
p eak
(where
the
v
alue
of
the
calibration
constan
t
is
the
low
er
n
um
b er).
13.
Mo
dify
calibration
constan
t
#239,
YTM
Oset;
Band
2,
to
maximize
low
end
p o
w
er.
P
o
w
er
may
p eak
twice.
Adjust
to
the
low
er
p eak.
14.
Adjust
band
2
SRD
bias
calibration
constan
ts
as
follows:
a.
Incremen
t
calibration
constan
t
#106,
SRD
Bias
A;
Band
2,
to
maximize
low
end
p o
w
er.
Then
decrease
the
calibration
constan
t
v
alue
b
y
15
coun
ts.
b.
Incremen
t
calibration
constan
t
#119,
SRD
Bias
B;
Band
2,
to
maximize
high
end
p o
w
er.
Then
decrease
the
p o
w
er
b
y
one
third
division
( 1/2
dB).
15.
Repeat
steps
12
through
14
un
til
the
en
tire
band
is
p eak
ed.
16.
Record
the
v
alue
of
calibration
constan
t
#239,
YTM
Oset;
Band
2
.
Step
do
wn
the
calibration
constan
t
in
100
coun
t
steps
and
v
erify
that
the
en
tire
trace
shifts
do
wn
ev
enly
.
If
the
p o
w
er
c
hange
is
not
uniform,
rep eat
steps
12
through
15.
Change
calibration
constan
t
#239
bac
k
to
its
original
v
alue.
Band
3
Adjustment.
17.
On
the
syn
thesizer,
press:
4
ST
ART
5
4
13.5
5
4
GHz
5
4
STOP
5
4
20
5
4
GHz
5
18.
Set
A12R25
B3S1
fully
clo
c
kwise
(see
Figure
3-15).
Note
There
are
tw
o
sets
of
p oten
tiometers
on
the
A12
assembly
with
iden
tical
names.
Make
c
ertain
y
ou
are
adjusting
the
correct
ones.
HP
8360
Adjustments
Amplifier/Multiplier
Adjustments
3-41
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