Agilent Technologies 83650B Service Guide

16.
AM Dela
y
(8360
B-Series
Only)
Description
and
Procedure
In
the
ALC
lo
op,
the
in
tegrator
input
from
the
ALC
detector
is
delay
ed (phase
shifted from
the
reference
input)
through
the
ALC mo
dulator, RF
path, and
ALC detector.
Because
of
this, amplitude
mo dulation
can
p
eak
the
AM
frequency
resp
onse.
In
this
adjustmen
t,
y
ou
set
the
dela
y
in
the
reference
input
equal
to
the
dela
y
in the
input from
the ALC
detector.
The
syn
thesizer
is
set
to
maxim
um
lev
eled
p
ow
er at
aCW
frequency,
with
amplitude
mo
dulation
at
the
maximum
rate. Monitoring
the INT
L
VL
signal
(the
in
tegrator
output),
adjust
the
AM
DELA
Y
to
minimize
an
y
A
C
v
oltage
presen
t.
1.
Preset
the
instrumen
ts
sho
wn
in
Figure
3-31
and
let them
warm
up for
at
least
one
hour.
Figure 3-31.
AM Dela
y
Adjustment
Setup
Equipment
Digital V
oltmeter
HP/Agilent 3456A
Function Generator
HP/Agilen
t 3325A
2. T
oac
hieve peak p o
wer, turn on RF peaking. Press:
4
USER CAL
5
NNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNN
Tracking Menu
NNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNN
Peak RF Always
(asterisk on)
3. Connect the equipmen
tas
shown in Figure 3-31 .
4. On the synthesizer, press:
4
CW
54
10
54
GHz
5
4
POWER LEVEL
5 Set to 3 dB below maximum specied leveled p ower.
4
MOD
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
AM On/Off 100%/V (asterisk on)
3-80 Adjustments
AM Delay
Agilent 8360

Agilent Technologies 83650B Specifications

General

Brand	Agilent Technologies
Model	83650B
Category	Portable Generator
Language	English