BDS
Graphical
User
Interface
Operation
23
De-embedding
De
‐
embedding
is
used
to
mathematically
rotate
the
measurement
plane
from
the
center
of
the
BDS
Cal
Cart
Sensor
probe
toward
either
the
load
or
the
signal
source.
In
doing
so,
it
adjust
measurements
made
by
the
probe
in
order
to
get
a
reading
at
a
different
segment
of
a
line
section.
Figure 15 De-embedding Dialog
The
de
‐
embedding
algorithm
accounts
for
losses
in
the
RF
delivery
system.
The
de
‐
embedding
options
allow
users
flexibility
to
enter
segment
parameters
in
different
formats
to
match
segment
spec
or
data
sheets.
Line
section
impedance
is
entered
as
either
inductance
and
capacitance
or
Z0
in
Ohms.
Dielectric
is
entered
as
either
propagation
velocity
as
a
fraction
of
the
speed
of
speed
of
light
or
in
Er.
Loss
can
be
entered
as
Ohms,
dB,
or
Nepers.
Misc
Enable
relative
phase
measurements
(required
for
waveform
reconstruction)
This
option
is
used
to
enable
relative
phase
calculations.
Relative
phase
is
the
phase
of
a
harmonic
relative
to
its
fundamental
tone.
It
is
required
for
waveform
reconstruction.
Figure 16 Misc Dialog
Note:
Relative
phase
calculations
add
significant
processing
time
and
will
slow
down
the
data
update.
Note:
Pulsed
RF
Mode
options
are
not
available
for
the
BDS
Cal
Cart
system.
