Chapter 6. Other settings

This chapter describes the facilities available from the Settings menu.

The Network settings… window is described in section 5.1 on page 8.

6.1 Integration high-pass corner frequency

Mathematical integration is used to convert acceleration to velocity and velocity to displacement. In order to minimise DC offset, a high-pass filter is used. The corner frequency of this filter can be set by selecting the HP Filter corner … menu item from the Settings menu.

The default value is 0.02 Hz (50 seconds). You can enter a value into either the Frequency (Hz) or Period (s) field: the other will update accordingly.

6.2 Run when Windows starts

Scream! AVD can be set to run automatically each time a user logs on to Windows. To achieve this, an entry is made in the Windows Registry at:

HKCU: \Software\Microsoft\Windows\CurrentVersion\Run

To enable or disable this, tick or clear the Run when Windows starts option from the Settings menu.

6.3 Minimise to system tray

The Scream! AVD extension can be set to minimise to the system tray as shown in the following screen shot.

A mouse-click on the icon in the system tray will cause the application's main window to be restored. To enable or disable this, tick or clear the Minimise to system tray option from the Settings menu.

6.4 Default naming

Whenever an instrument is enabled (“moved” to the right hand list), unique Stream IDs are created for the pass-through stream and the two calculated streams. By default, the original stream name is modified by changing the last character of the Sys Id to P, A, V or D for pass-through, acceleration, velocity and displacement, respectively.

This default behaviour can be changed slightly using the Default naming… item from the Settings menu. The following form will be shown:

Each of the default characters may be changed (though they must all differ from each other) and the location where the characters are inserted can be selected: either at the start of the SysID, or at the end.