Calibration
Overview
User
Calibrations|Optical
and
Electrical
T
o
skew
two
channels
1.
Turn
both
channels
on
and
overlay
the
signals
vertically
.
2.
Expand
the
time
base
so
that
the
rising
edges
are
at
about
a
45
angle
.
3.
Press
the
plug-in
module's
front-panel
channel
4
SETUP
5
key
.
4.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Calibrate
and
then
NNNNNNNNNNNNNN
Skew
.
5.
A
djust
the
skew
on
one
of
the
channels
so
that
the
rising
edges
overlap
at
the
50%
points
.
Probe
Calibration
Probe
calibration
applies
to
electrical
measurements
only
.
F
or
active
probes
such
as
the
HP
54701A,
which
the
instrument
can
identify
through
the
probe
power
connector
,
the
instrument
automatically
adjusts
the
channel
vertical
scale
factors
to
the
probe's
nominal
attenuation,
even
if
a
probe
calibration
is
not
performed.
F
or
passive
probes
or
non-identied
probes
,
the
instrument
adjusts
the
vertical
scale
factors
only
if
a
probe
calibration
is
performed.
Probe
calibration
allows
the
instrument
to
establish
the
gain
and
oset
of
specic
probes
that
are
connected
to
a
channel
of
the
instrument,
and
then
apply
those
factors
to
the
calibration
of
that
channel.
The
analyzer
calibrates
to
the
tip
of
the
probe
by
setting
the
probe
attenuation
to
the
actual
attenuation
ratio
of
the
probe
.
The
CAL
signal
is
internally
routed
to
the
probe
tip
for
HP
active
probes
.
The
mainframe's
CAL
signal
is
a
voltage
source
,
therefore
you
can
let
the
instrument
compensate
for
the
actual
characteristics
of
your
probe
by
letting
the
instrument
calibrate
to
the
tip
of
the
probe
.
The
instrument
automatically
calibrates
to
the
tip
of
the
probe
,
sets
the
probe
attenuation,
and
compensates
for
any
probe
oset.
If
you
do
not
perform
a
probe
calibration
but
want
to
use
a
passive
probe
,
enter
the
attenuation
factor
using
the
following
steps:
1.
Press
the
plug-in
module's
front-panel
channel
4
SETUP
5
key
.
3-16
Summary of Contents for 83481A
Page 1: ...User s Guide HP 83481A Optical Electrical Plug In Module ...
Page 12: ...Contents ...
Page 13: ...1 The Instrument at a Glance ...
Page 36: ...TheInstrumentata Glance ...
Page 37: ...2 Channel Setup Menu ...
Page 39: ...ChannelSetupMenu Figure 2 1 OpticalChannelSetup menu 2 3 ...
Page 40: ...ChannelSetupMenu Figure2 2 ElectricalChannel Setupmenu 2 4 ...
Page 52: ...ChannelSetupMenu ...
Page 53: ...3 Calibration Overview ...
Page 71: ...Calibration Overview UserCalibrations OpticalandElectrical Figure3 6 ExternalScale Menu 3 19 ...
Page 74: ...CalibrationOverview ...
Page 75: ...4 Speci cations and Characteristics ...
Page 84: ...Declaration of Conformity 4 10 ...
Page 85: ...5 In Case of Di culty ...
Page 92: ...InCaseofDi culty ...
Page 93: ...Index ...