Agilent Technologies 83640B Service Guide

13.
AM/FM D
AC
Offset
and
Gain
(Option
002)
(8360
B-Series
Only)
Description
and
Procedure
No
test
equipmen
t
is
required
for
this
pro
cedure.
This
pro
cedure
calibrates
the mo
dulation
generator
assem
bly
b
y
adjusting the
AM and
FM D
ACs.
The
in
ternal
D
VM
measures
the
DA
C output
v
oltages.
The
D
A
C
oset
is
then
zero
ed
with
this
adjustmen
t
pro
cedure
and the
D
A
C
gain
is
automatically
calibrated
with
calibration
constan
ts.
1.
T
urn
the syn
thesizer on
and press
4
PRESET
5
.
Let
the syn
thesizer w
arm up
for at
least
one
hour.
2.
Select
the
A8
adjustmen
t
men
u.
On
the
syn
thesizer,
press:
4
SERVICE
5
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
Adjust
Menu
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
AssyAdj
Menu
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
A8
Adj
Menu
3.
The
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
AM
DAC
adjustmen
t
is
automatically
selected
(asterisk on).
4.
Adjust
A8R111
(see
Figure
3-27
)
to
cen
ter
the
\needle"
on
the
displa
y
.
Figure
3-27. A8R111
and A8R105
Adjustment
Locations
5.
Select
NNNNNNNN
NNNNNNNNNNNN
FM DAC
(asterisk on).
6.
Adjust A9R105 (see Figure 3-27 ) to cen
ter the \needle" on the displa
y.
7.
Select
NNNNNNNNNNNNNN
Done .
The syn
thesizer will displa
y the follo
wing message:
Updating Cal Constants
8. If this is the
last calibration constan
tyou will b e adjusting, see \Calibration Constan
ts" to
store the calibration constants as protected data
(in EEPROM).
Agilent 8360 Adjustments
AM/FM DAC Offset and Gain
3-73

Agilent Technologies 83640B Specifications

General

Brand	Agilent Technologies
Model	83640B
Category	Portable Generator
Language	English