Typical
Test
Setup
Figure
6-58 shows
a
typical
test
setup
using
the
external
source
mode
.
The
same test
setup is
applicable
for either
manual
or
automatic
external
source
mode
operation.
Figure
6-58.
Typical
Setup
for the
External Source
Mode
External
Source
Mode
In-Depth
Description
Y
ou
may
use
the
external
source
in
automatic
or
manual
mode
.
External source
mode
phase
locks
the
analyzer
to
an
external
CW
signal.
Note
The
external
source
mode
works
only
in
CW
time
sweep
.
External
Source
A
uto
.
If
you
press
4
SYSTEM
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
N
N
N
N
N
N
INSTRUMENT
MODE
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
EXT
SOURCE
AUTO
the
analyzer
turns
on
the
external
source
auto
mode
.
Y
ou
should observe
the following
points
when
using
this
operation
mode:
The
auto
mode
has
a
wider
capture
range
than
the
manual
mode
.
The
manual
mode
is
faster
than
the
auto
mode
.
The
auto
mode
searches
for
the incoming
CW signal.
The
capture
range
is typically
10% of
the selected
CW frequency
.
This
feature
works
only in
CW
time
sweep
type
.
The
incoming signal should not have large spurs or sidebands
, as the analyzer may phase lock
on
a spur or not phase lock at all.
The frequency the instrument has locked onto is shown on the
analyzer, and is also available
via HP-IB
.
External Source Manual.
If you press
4
SYSTEM
5
NNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
N
INSTRUMENT MODE
NNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNN
EXT SOURCE MANUAL
the
analyzer activates the external source manual mode
.Y
ou should observe the following points
when using this operation mode:
The manual mode has a smaller capture range than the auto mode.
The manual mode is much faster than auto mode.
This feature works only in CW time sweep type.
The incoming signal should not have large spurs or sidebands, as the analyzer may phase lock
on a spur or not phase lock at all.
6-110 Application and Operation Concepts
To Next Page
Loading...
