Calibration
Overview
User
Calibrations|Optical
and
Electrical
T
o
calibrate
other
devices
The
information
in
this
section
applies
to
both
optical
and
electrical
measurements
.
Since
the
mainframe's
CAL
signal
is
a
voltage
source
,
it
cannot
be
used
to
calibrate
to
the
probe
tip
when
the
units
are
set
to
Ampere
,
W
att,
or
Unknown.
Instead,
set
the
external
gain
and
external
oset
to
compensate
for
the
actual
characteristics
of
the
probe
or
device
.
If
you
do
not
know
the
actual
characteristics
,
you
can
refer
to
the
typical
specications
that
came
with
the
probe
or
device
.
1.
Press
the
plug-in
module's
front-panel
channel
4
SETUP
5
key
.
2.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
External
scale
.
3.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Atten
units
Ratio
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Attenuation
1:1,
and
then
NNNNNNNNNNNNNNNNN
Units
Ampere
(V
olt,
W
att,
or
Unknown).
4.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNN
Ext
gain
,
and
enter
the
actual
gain
characteristics
of
the
probe
or
device
.
5.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Ext
offset
,
and
enter
the
oset
introduced
by
the
probe
or
device
.
External
Scale
Both
optical
and
electrical
channels
have
an
External
scale
setting
which
allows
the
user
to
enter
in
an
oset
value
to
compensate
for
gains
or
losses
not
associated
with
the
device
under
test.
This
feature
is
useful
for
adjusting
out
the
eects
of
devices
such
as
test
xtures
and
attenuators
so
that
the
reading
on
the
display
gives
the
measurement
value
associated
with
only
the
actual
device
under
test.
T
o
adjust
the
external
scale
1.
Press
the
plug-in
module's
front-panel
channel
4
SETUP
5
key
.
2.
Press
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
External
scale
,
and
set
the
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Atten
units
to
\decibel".
3.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Attenuation
,
and
enter
the
appropriate
values
.
3-18
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 ...