HP 54501A - Data Conversion; Conversion from Data Value to Voltage; Conversion from Data Value to Time

Data
Conversion
Data
sent
from
the
HP
54501A
is
raw
data
and
must
be
scaled
for
useful
interpretation.
The
values used to
interpret
the
data
are
the
X
and
Y
references,
X
and
Y
origins,
and
X
and
Y
increments.
These
values
are
read
from
the
waveform
preamble.
Conversion from
The
formula
to
convert
a
data
value from
waveform
memories
1-4
to
a
Data
Value
tO
voltage
value
is:
Voltage
voltage
=
[(data
value
-
yreference)*yincrement]
+
yorigin
Conversion
from
The
time
value
of
a
data
point
can
be
determined
by
the
position
of
the
Data
Value
to
Time
data
point.
As
an
example, the third
data
point
sent
with
XORIGIN
=
16
ns,
XREFERENCE
=
0,
and
XINCREMENT
=
2ns.
Using
the
formula:
time
=
[(data
point
number
•
xreference)*xincrement]
+
xorigin
would
result
in
the
following
calculation:
time
=
((3
-
0)
*
2
ns]
+
16
ns
=
22
ns.
Waveform
Subsystem
17-4
HP
54501A
Programming