Data Conversion; Conversion From Data Value To Voltage; Conversion From Data Value To Time - HP 54501A Programming Reference Manual

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