Agilent Technologies 83620A - Page 310

48.
Adjust
A12R109
B4S1
for
maxim
um
high-end
p
o
w
er.
49.
Adjust A12R105
B4BP1 for
maximum
po
w
er
to
optimize
the
3rd
through
the
7th
divisions.
Stop
when
the
p
o
w
er
b
egins
to
decrease.
50.
Rep
eat
step
47.
51.
Repeat
steps 41
through 48
un
til
the
en
tire
band
is
p
eak
ed.
52.
Record
the
v
alue
of
calibration
constan
t
#634,
YTM
Oset;
Band
4
.
Step
do
wn
the
calibration
constan
t
in 100
count
steps and
v
erify
that
the
entire
trace shifts
do
wn
ev
enly
.
If
the
p
o
w
er
c
hange
is
not
uniform,
rep
eat
steps
46
through
51
un
til
it
is.
Then
c
hange
calibration
constan
t
#634
bac
kto
the recorded
value.
53.
On
the
syn
thesizer,
set:
4
POWER
LEVEL
5
4
0
5
4
dBm
5
54.
Adjust calibration
constant
#134,
Squegg
Clamp
4A
,
to
maximize
RF
output
p
o
w
er
across
the
band.
55.
F
or
the
HP
83630A
only
,
adjust
calibration
constan
t
#134,
Squegg
Clamp
4A
as
describ
ed
here,
to
protect
the
bridge
detector
from
excessiv
e
p
o
w
er:
a.
Set
the
oscilloscop
e
v
ertical
p
osition
as
necessary
to
displa
ythe
trace.
b.
On
the
syn
thesizer,
set:
SWEEP
4
MENU
5
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
Manual
Sweep (asterisk
on)
c.
Using
the
rotary
knob,
nd
the
p
eak
of
the
sw
eep
as displa
yed
b
y
the
oscilloscop
e.
d.
If
the p
ow
er lev
el of
the
p
eak
p
oin
t
is
greater
than
18.9
dBm,
as
displa
y
ed
on
the
p
o
w
er
meter, decrease
Squegg Clamp
4A un
til the
p
o
w
er
lev
el
is
less
than
these
v
alues.
If
the
p
o
w
er
lev
el
of
the
p
eak
p
oin
t
is
already less
than these
values,
return the
synthesizer
to con
tin
uous
sw
eep
and
decrease
Squegg Clamp 4A just
until the p eak p oin
t begins to drop
(this indicates that p o
wer to the bridge detector is clamp ed).
56. F
or the HP 83640A/50A only
, adjust
calibration constant #452,
DAmp Clamp 4 as describ ed here, to protect the bridge detector from
excessivepo
wer while in doubler amp mo de:
a. On the
synthesizer, set:
4
SERVICE
5
NNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNN
Tools Menu
NNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNN
Disable Doubler
(asterisk o )
POWER 4
MENU
5
NNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNN
Dblr Amp Menu
NNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNN
Doubler Amp Mode On
(asterisk
on)
3-66 Adjustments
Amplifier/Filter Adjustments
HP 8360
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