Total QRS: the time between two erect line in FIR filter window.
Under 40 µV: the duration of waves with the amplitude less than 40 µV at the end of QRS waves
after filtering and Superposition.
Last 40 ms: root meat square of the amplitude in the last 40 ms of QRS waves after filtering and
Superposition.
Filter frequency: transmission bands of filter;
Superrimposition numbers: the number of superposition beats.
Standard unfiltered: Unfiltered superposition waves is displayed in this window. Two erect lines
denote the start position and end position of standard QRS wave. Click one with the left key of
mouse and it will turn blue which shows it has been selected. Here adjust its position with "←"
and "→" on keyboard, meanwhile the data of standard QRS will change, too.
Click the right mouse in the window to call up the menu where you can select the superposition
wave you want to check. Multiply selection is supported.
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