| Trim data and spike removal
Automatic spike removal
(active channel only) allows you to delete or fix voltage
'spikes' or other inaccurate data.
There are several options for removing spikes:
Two options are available for sweeping: 'Single Scan' makes a single pass through the data; 'Spike Sweep' repeats scanning until all appropriate spikes are removed.
The Absolute Value option converts all data to its absolute value (positive or zero); this is also available in the transforms window.
In this example, the user has performed a spike sweep with a threshold value of .02, and the program found and removed 78 spikes. Also, the trim data options have been set such than any value exceeding 5 will be set to equal 5, and any value less than -.15 will be set to zero.
After trimming or removing spikes, a button allowing you to save the current settings as defaults will appear.
An alternate manual spike removal is the Interactive mode.