Agilent Technologies 83650B Service Guide

28.
Mo dify
calibration constan
t #241,
YTM Oset;
Band 4,
to maximize
p
o
w
er
at
the
v
ery
low
end. P
o
w
er
ma
y
p
eak
t
wice.
Adjust
to
the lo
wer
peak.
29.
Mo
dify
calibration
constan
t
#228, YTM
Gain; Band
4, to
maximize p
ow
er at
the rst
division
on the
display
.P
ow
er ma
y
p
eak
t
wice.
Adjust
to
the
lo
w
er
peak.
Note
If there
is no
noticeable increase
in
p
o
w
er
in
the
next
t
w
o
adjustments,
leav
e
the
p
oten
tiometers
at
their
preset
p
osition
(fully
clo
c
kwise).
30.
Adjust
A12R26
B4S1
for
maxim
um
high-end
p
o
w
er.
P
o
w
er ma
yp
eak t
wice. Adjust
to
the
lo
w
er
p
eak.
31.
Adjust A12R23
B4BP1 for
maxim
um
p
o
w
er
to
optimize
the
3rd
through
the
7th
divisions.
Stop
when
the
p
o
w
er
b
egins
to
decrease.
P
o
w
er
may
peak
twice.
Adjust
to
the
lo
w
er
p
eak.
32.
Repeat
step
30.
33.
Adjust
band
4
SRD
bias
calibration
constan
ts
as
follo
ws:
a.
Incremen
t
calibration
constan
t
#108,
SRD
Bias
A;
Band
4, to
maximize
lo
w
end
p
o
w
er. Then
decrease
the
calibration
constan
t
v
alue
b
y
15
coun
ts.
b.
Incremen
t
calibration
constan
t
#121,
SRD
Bias
B;
Band
4,
to
maximize
high
end
p
ow
er. Then
decrease
the
p
o
w
er
b
y
one
third
division
(

1/2
dB).
34.
Rep
eat
steps
28
through
33 un
til the
en
tire
band
is
p
eak
ed.
35.
Record
the
v
alue
of
calibration
constan
t
#241,
YTM
Oset;
Band
4
.
Step
do
wn
the
calibration
constan
t
in
100
coun
t
steps
and
verify
that
the
en
tire
trace
shifts
do
wn
ev
enly
.
If
the
p
o
w
er
c
hange
is
not
uniform,
rep
eat
steps
26 through
34.
Change
calibration
constan
t #241
bac
k
to
its
original
v
alue.
Band
5
Adjustment (
83640B
/L
and
83650B
/L
only).
36.
On the
synthesizer,
press:
4
ST
ART
5
4
25.5
5
4
GHz
5
(
83640B
/L)
4
START
5
4
26.5
5
4
GHz
5
(
83650B
/L)
4
STOP
5
4
32
5
4
GHz
5
(83640B
/L)
4
STOP
5
4
33.5
5
4
GHz
5
(
83650B
/L)
37.
Adjust
calibration
constan
t
#229,
YTM
Gain;
Band
5,
for
maximum
po
wer
at
the
high
end
of
band
5.
The
high
end
p
o
w
er
ma
y
p
eak
t
wice.
If
it do
es, adjust
the calibration
constant
to the
low
er p
eak
(where
the
v
alue
of
the
calibration
constan
t
is
the
lo
w
er
n
um
b
er).
38.
Mo
dify
calibration
constan
t
#242,
YTM
Oset;
Band
5,
to
maximize lo
w
end
p
o
w
er.
Power ma
y p eak t
wice. Adjust to
the lo
wer p eak.
39. Set
the band 5 SRD bias calibration constan
ts as follo
ws:
a. Incremen
t calibration constan
t #109, SRD Bias A; Band 5, to maximize lo
wend
po
wer. Then decrease
the calibration constan
tvalue b
y15coun
ts.
b. Incremen
t calibration constan
t #122, SRD Bias B; Band 5, to maximize high end
po
wer. Then decrease the po
wer
by one third division (
 1/2 dB).
40.
Repeat steps 37 through 39 un
til po
wer is optimized o
ver the full band.
41. Record the value of calibration constant #242, YTM Oset; Band 5 .
Step down the calibration constant in 100 count steps and verify that the entire trace
shifts down evenly. If the p ower change is not uniform, rep eat steps 37 through 40.
Change calibration constant #242 back to its original value.
3-28 Adjustments
Amplifier/Multiplier Adjustments
Agilent 8360

Agilent Technologies 83650B Specifications

General

Brand	Agilent Technologies
Model	83650B
Category	Portable Generator
Language	English