Agilent Technologies 4395A - Page 441

File
Structure
MEMORY TRA
CE consists
of a
header and
adata
segment
by
a
channel.
Figure
A
-46.
D
A
T
A
,
MEMORY
, D
AT
A
TRA
CE
and
MEMORY
TRA
CE
Data
Group
Structure
Analyzer
Type
is
a
two-byte
INTEGER
value
.
This
shows
the
analyzer
type
of
each
channel.
\0"
is
set
when
the
network
analyzer
is selected
and
\1"
is
set
when
the
spectrum
analyzer
is
selected.
Number
Of
P
oints
(NOP)
is
a
two-byte
INTEGER
value.
This
number
is
equal
to
the
number
of
complex
or
real
data
that
follows
the
NOP
.
D
AT
A is
a
set
of
the
values
for
each
measurement
point.
The
values
are
IEEE
754
double
precision
oating number
. When
the
network
analyzer
mode
is
selected,
the
values
are
two
numbers
(the rst
value is
the real
part,
the
second
value
is
the
imaginary
part).
The
data
size
in bytes
can be
determined by
16
2
NOP
.
When
the
spectrum
analyzer
mode
is
selected,
the
values are
one number
and the
data
size
in
bytes
can
be
determined
by
8
2
NOP
.
Basic Measurement Theory A-65