Agilent Technologies 83620A - Frequency Ranges

a.
Compare
the
man
ually
adjusted
YTF
and
YTM
gain
and
oset
calibration
constan
ts
(step
85)
to
the
auto trac
ked
calibration
constants.
Alarge
dierence in
v
alues
(sev
eral
h
undred
coun
ts)
indicates
a
p
ossible
misadjustmen
t.
The
auto
trac
king
v
alues
are
correct.
b. If
the band
3
v
alues
are
within
500
coun
ts
of
the
limits
of
their
ranges,
rep
eat
the
B3S1,
B4S1,
and
B4BP1
adjustmen
ts
with
the
doubler
disabled.
c.
If
the
band
4
v
alues
are
within
500
coun
ts
of
the
limits
of
the
range,
rep
eat
the
B4S1
and
B4BP1
adjustmen
ts
with
the
doubler
disabled
(unless
y
ou
ha
v
e
just
readjusted
these
adjustmen
ts in
step
b).
d.
If
the
problem
contin
ues, it
is most
likely
hardw
are-related.
Refer
to
the
T
r
oublesho
oting
man
ual.
88.
F
or
the
HP
83630A/40A/50A,
rep
eat
step
87
for
eac
h
frequency
range
listed
in
T
able
3-5 and
asw
eep
time
of
1.5
seconds.
T
able
3-5.
Frequency
Ranges
HP
83630A
HP
83640A
HP
83650A
20
to
26.5
GHz
20
to
26.5
GHz
20
to
26.5
GHz
26.5
to 40
GHz
26.5
to 40
GHz
40
to
50
GHz
89.
On
the
syn
thesizer,
set:
4
START
5
4
2.0
5
4
GHz
5
4
STOP
5
4
20
5
4
GHz
5
4
CONT
54
SWEEP
TIME
54
1.5
54
sec
5
90.
Set
the
syn
thesizer
p
o
w
er lev
el
to
the
sp
ecied
maxim
um
lev
eled
p
ow
er.
Check for ALC oscillations or
level squegging.
a. The SRD bias A or B calibration constan
ts for the aected band
might eliminate oscillation. The problem is with the A
term if the
oscillations are near the beginning of the band. It is with the B term if
the oscillations are near the end of the band. SRD bias has a range.
It can b e o
verbiased which causes lev
el squegging. If so, decrease the
value of the SRD bias calibration constan
ts and rep eat the adjustmen
t.
HP 8360 Adjustments
Amplifier/Filter Adjustments
3-71
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