Agilent Technologies 4395A - Stabilizing the Trace

Stabilizing
the
Trace
Stabilizing the
Trace
When
the
trace
is
not stable
and the
marker value
changes frequently
,it
is dicult
to read
the
measured
value
.
Y
ou can
use the
following techniques
to stabilize
the trace:
Stop
the
sweep
.
Use
the
averaging
function.
Use
the
maximum
or
minimum hold
function.
Capture
the
unstable
signal
using signal
track.
T
o
Stop
the
Sweep
1.
Press
4
T
rigger
5
.
2.
Press
N
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SWEEP:
HOLD
.
The
sweep
is
stopped
immediately
(even
if
the
sweep
is
in
progress).
If
you
want
to
restart
the
sweep
,
press
N
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N
CONTINUOUS
to
start
a
free-run sweep
or
press
N
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SINGLE
to
make
a
single sweep
.
T
o Use
the A
veraging Function
1.
Press
4
Bw/Avg
5
.
2.
Press
N
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N
AVERAGING
FACTOR
.
3.
If
needed,
enter
the
averaging
factor
(number
of
times).
Then
press the
4
2
1
5
.
Default
averaging
factor
is
16.
4.
T
oggle
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NN
N
AVERAGING
on
OFF
to
N
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ON
off
.
The
averaging
notation
(
Avg
)
appears
on
left
side
of the
grid when
averaging
is
turned
on.
The
averaging
notation
indicates
the
number
of
times
averaging
has
been performed.
When
averaging
is
completed, the
counter stops
incrementing.
However
,
the
trace
continues
updating
with each
sweep.
A
veraging
requires a
sweep with
a specied
number
of
times
that
is
enough
for
an
averaging
factor
to
complete the
averaging. Y
ou can
set
the
number
of
sweeps
by
using
the
number
of
groups
function.
If you
want to
change
the
setting
of
any
parameter
when
averaging,
you
can
restart
averaging
from
the
0
count.
To restart the averaging, press
4
Bw/Avg
5
N
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AVERAGING RESTART
. This resets averaging counter to
0.
To Use
Maximum or Minimum Hold Function
1. Press
4
Display
5 .
2.
Press
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NNNNNNNNNNNNNNNNNNNNNNNNN
NNN
DATA HOLD [OFF]
.
ToHold Press
Maximum Level
NNNNNNNNNNN
MAX
Minimum Level
NNNNNNNNNNN
MIN
Advanced Techniques for Optimizing Measurements 9-13