Actiwave User Guide - Issue 2.0.18
Page 28
10 Downloading data
10.1 Download
options
Select the appropriate channel and then click on the ‘Read
Actiwave’ button. The following window will appear:
Notch Filter
Mains pickup is not usually a problem with the Actiwave
devices. They are connected only to the body and will not
normally pick up signal from mains supplies. However,
any mains pickup that does occur can be removed by
selecting the appropriate filter for your local mains
frequency.
Derived Signals / Annotations
The derived parameters are body position and heart rate.
The body position can only be calculated when there is no
movement and is applied as an annotation in the EDF file.
The heart rate is found using a simple R wave detector. If
you require a more sophisticated algorithm and
measurements then there are specialist programs
available that will carry out this work.
