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Frequency
A
ccuracy
A
djustment
In
this
procedure
the
frequency
accuracy
of
the
analyzer's
source
is
set
by
adjusting
the
10
MHz
internal
reference
clock.
Required
Equipment
Equipment
Description
Recommended
Model
or
P
art
Number
50
(standard)
75
(opt.1EC)
Frequency
counter
HP
5342A
HP
5342A
BNC
cable
8120-1839
8120-1839
Minimum
loss
pad
N/A
HP
11852B
A
dapter
,
type-N(m)
to
BNC(f)
1250-0780
1250-0780
Estimated
A
djustment
Time
This
adjustment
takes
approximately
ve
minutes
to
perform.
Procedure
1.
Connect
the
equipment
as
shown
in
Figure
2-6.
Figure
2-6.
Setup
for
Frequency
A
ccuracy
A
djustment
2.
Set
the
frequency
counter
input
switches
to
the
\10
Hz
-
500
MHz"
and
50
positions
.
3.
On
the
analyzer
,
press
4
PRESET
5
4
FREQ
5
NNNNNNNN
CW
4
500
5
NNNNNNNNNNN
MHz
4
MENU
5
(in
the
SOURCE
keypad
section)
NNNNNNNNNNNNNNNNNNNNNNN
Trigger
NNNNNNNNNNNNNN
Hold
.
If
the
frequency
counter
reading
is
500
MHz
62500
Hz,
you
do
not
need
to
make
this
adjustment.
However
,
you
can
still
make
this
adjustment
to
improve
the
frequency
accuracy
.
4.
T
o
proceed
with
the
adjustment,
disconnect
the
frequency
counter
and
adapter(s)
from
the
RF
OUTPUT
connector
.
2-10
Adjustments
Содержание 87114B
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