Math and Measure
However, by setting a
Sweeps
value, you establish a fixed weight that is assigned to the old average
once the number of sweeps is reached. For example, for a sweeps (weight) value of
4
:
Sweep
New Average =
1 (no old average yet)
(new data +0 * old average)/(0 + 1) = new data only
2
(new data + 1*old average)/(1 + 1) = 1/2 new data +1/2 old average
3
(new data + 2 * old average)/(2 + 1) = 1/3 new data + 2/3 old average
4
(new data + 3 * old average)/(3 + 1) = 1/4 new data + 3/4 old average
5
(new data + 4 * old average)/(4 + 1) = 1/5 new data + 4/5 old average
6
(new data + 4 * old average)/(4 + 1) = 1/5 new data + 4/5 old average
7
(new data + 4 * old average)/(4 + 1) = 1/5 new data + 4/5 old average
In this way, for sweeps > 4 the importance of the old average begins to decrease exponentially.
Note:
The number of sweeps used to compute the average is displayed at the bottom of the
trace descriptor box.
Copy Function
The
Copy
math function saves a copy of your present waveform in its unprocessed state to the first
available memory location. While processing may continue on the original waveform, the copy
enables faster throughput in some cases by preserving the original data. No calculations need to be
undone on the copy before additional math can be calculated. This benefit of faster throughput,
however, comes at the expense of memory usage.
Follow the ususal steps to
, selecting
Copy
from the
Misc
submenu.
On the Wform Copy subdialog, optionally
Reset Count
or
Change BatchSize
.
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