Agilent Technologies 83640B Service Guide

d.
If the
po
wer
level
of the
peak
p
oin
t
is
greater
than
20
dBm
for
83620B
/22B
and
83630B/L
or 22.7
dBm
for
83640B
/L
and
83650B
/L,
as
displa
y
ed
on the
po
wer
meter,
decrease
Squegg
Clamp
2A
un
til
the p
ow
er lev
el is
less than
these v
alues.
If
the
p
o
w
er lev
el of
the p
eak p
oint
is already
less than
these
v
alues,
return
the
synthesizer
to con
tinuous
sweep
and decrease
Squegg
Clamp
2A
just
un
til
the
p
eak
p
oin
t
b
egins
to
drop
(this
indicates
that
p
o
w
er
to
the
bridge detector
is clamp
ed).
28.
If
y
ou
ha
v
e
an 83623L
, adjust
calibration constan
t #132,
Squegg
Clamp
2A
as
describ
ed
here. Otherwise,
contin
ue with
the
next
step.
a.
Set
the
syn
thesizer's
sw
eep
time
to
500
ms.
b.
Adjust
the
calibration
constan
t #132,
Squegg Clamp
2A for
maximum
p
o
w
er
without
squegging.
c.
Chec
k
for
squegging
b
y
setting
the
syn
thesizer's
sw
eep
time
to 0
ms. If
the p
o
w
er
increase
is
greater
2
dB
in an
ypart
of the
band,
then
squegging
is
o
ccurring.
d.
If
squegging
o
ccurs,
readjust
calibration
constan
t
#132
so
that
the
p
o
w
er
dierence is
2
dB
or
less
from
a
500
ms
(slow)
sweep
to a
0
ms
(fast)
sw
eep.
29.
If y
ou ha
v
e
an
y
instrumen
t
exc
ept
an
83640B
/L
and
83650B
/L,
con
tin
ue
with
\Band
3
Adjustmen
t."
Otherwise,
adjust
calibration
constan
t
#450,
D
Amp
Clamp
2
as
describ
ed
here,
to
protect
the
bridge
detector from
excessive
po
w
er
while
in
doubler
amp
mo
de:
a.
On
the
syn
thesizer,
set:
4
SERVICE
5
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
Tools
Menu
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
Disable
Doubler
(asterisk
o
)
PO
WER
4
MENU
5
N
NN
NN
N
N
N
N
N
N
N
N
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
Dblr
Amp
Menu
N
NN
NN
N
N
N
N
N
N
N
N
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
NN
NN
N
N
N
N
Doubler
Amp
Mode
On
(asterisk
on)
b.
Set
the
oscilloscop
e
v
ertical
p
osition
as necessary
to displa
y
the
trace.
c.
On
the
syn
thesizer,
set:
SWEEP
4
MENU
5
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
Manual
Sweep
(asterisk
on)
d.
Using
the
syn
thesizer
rotary
knob,
nd
the
p
eak
of
the
sw
eep
as
displa
y
ed
b
ythe
oscilloscop
e.
e.
If
the
p
o
w
er
lev
el
of
the p
eak p
oin
t
is
greater
than
22.7
dBm,
as
displa
y
ed
on
the
p
o
w
er
meter,
decrease
D
Amp
Clamp
2
un
til
the
p
o
w
er
level
is less
than
these
v
alues.
If
the
p
o
w
er
lev
el
of
the
p
eak
p
oint
is already
less than
these v
alues,
set
the
syn
thesizer bac
k
to
con
tin
uous
sw
eep
and
decrease
D
Amp
Clamp
2
just
un
til
the
peak
p
oin
t
b
egins to
drop (this
indicates that
p
o
w
er
to
the
bridge
detector
is
clamp
ed).
30.
Disable
the
doubler,
turn
doubler
amp
mo
de
o,
and
return the
synthesizer
to con
tinuous
sw
eep
if
y
ou
are
still
in
man
ual
sw
eep.
Band
3 Adjustment.
31. On the syn
thesizer, set:
4
START
54
13.5
54
GHz
5
4
STOP
54
20
54
GHz
5
4
POWER LEVEL
54
25
54
dBm
5
32. Decrease the syn
thesizer po
wer
level until the lev
el of the en
tire trace on the oscilloscop e
begins to drop.
33. Set A12R108 B3S1 fully clo c
kwise (see Figure 3-20
).
Note
There are two sets of p otentiometers on the A12 assembly with identical
names. Make certain you are adjusting the correct ones.
3-44 Adjustments
Amplifier/Filter Adjustments
Agilent 8360

Agilent Technologies 83640B Specifications

General

Brand	Agilent Technologies
Model	83640B
Category	Portable Generator
Language	English