HP 83480A User Manual

General Purpose Oscilloscope Menus
Acquisition Menu
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Averaging
With averaging active, the instrument averages the newly acquired data with
the existing data before updating the display or measurements. The higher
the number of averages, the less impact each new waveform will have on the
composite averaged waveform.
To adjust the number of averages, press:
4
Acquisition
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Averaging
on
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
#
of
averages
A
djust
the
number
of
averages
from
1
to
4096
using the
knob,
arrow
keys
,
or
keypad.
A
veraging
signicantly
reduces
noise
on
the
displayed
waveform,
improves
resolution
of
the
displayed
waveform,
and
increases
measurement
repeatability
,
all
due
to
a
more
stable
,
displayed
waveform.
However
,
averaging
slows
down
the
throughput
of
the
instrument.
Also
,
the
waveform
is
less
responsive
to
changes
,
especially
when
you
select
a
high
number
of
averages
.
The
vertical
resolution
can
be
improved
to
greater
than
12
bits
by
using
averaging.
The
instrument uses
this formula
to calculate
how to
include
new
data
with
existing data.

1
n

(
new val ue
)

+

n 0 1
n

(
existing val ue
)

The Clear Display key resets the averaging process.
In instruments
with
rmware
revision
A.02.00
and
above
,
when
averaging
is on,
acquired
data
is
placed
in
the
database
used
by
the
color
grade,
mask
test and histogram features only after the specied number of averages is
reached.
10-4

HP 83480A Specifications

General

Brand	HP
Model	83480A
Category	Measuring Instruments
Language	English