BSL PRO Software Guide - Biopac

252 Part EBrowseClearClear AllAutomaticallyplay media inidle modePlaybacksynchronizationPlayback media can be assigned using the ‘Browse’ button. The Browse button can also be usedto change the assigned recording media. Pressing Browse brings up a standard FileOpendialog. Media capture can create *.avi (default), *.wmv/*.wma files, and the Browse dialog willadditionally support *.mpeg or *.mpg formats for playback only.If the file selected using Browse is in a different location than the assigned Media folder, a copyof the file will automatically be placed in the new Media folder. This assures that all associatedmedia files reside in one folder.Removes a selected media segment from the Playback assignment region.Removes all media segments from the Playback assignment region. Only the assigned medialink is removed. Media files themselves remain in their assigned directory and are not deleted,If selected, media files assigned Playback Idle status will be loaded and begin playingautomatically when the saved acquisition is reopened in Playback mode. The user can then usethe media window tools to pause, stop or rewind the media. To assign media to Playback Idle,click on the Playback Idle icon and Browse to the desired video file’s directory. This can beuseful for displaying a brief “preview” video prior to playback of associated data.Allows for a positive or negative time shift to be introduced between start of graph data and startof the linked media file, thus compensating for any data/media alignment issues that may arise.Playback synchronization is often necessary because there is an unknown delay between theactual start of the acquisition and the start of the first video frame. If precise synchronization isrequired, the Playback synchronization setting allows one to change the timing of the first videoframe with respect to the first data sample.As an example to determine synchronization, an LED can be connected to the I/O output of theMP device. The Digital Outputs Output Control can then be set up to toggle any digital channel(D1-D8) on/off. With the LED viewable in the video, simply determine when the digital outputoccurred in the graph and enter the appropriate Playback synchronization value necessary tocorrect the alignment. Note that one can never achieve better than 1/30 of a secondsynchronization, which is the video frame rate.Start allmediaAftergraph startStart allmediaBeforegraph startOKCancelBiopac Digital LED connected to MP3x I/O portNote: Because synchronization requires a time scale value, it cannot be applied to graphsdisplayed in X-Y mode, or for FFT and Histogram windows.Shifts media alignment with graph file to after the start of graph data. The inputted time valuedetermines the degree of offset.Shifts media alignment with graph file to before the start of graph data. The inputted time valuedetermines the degree of offset.Clicking OK applies all settings, closes the Media Setup dialog and automatically opens themedia window if a Capture option is enabled.Clicking Cancel will discard any changes made in the Media Setup dialog.Visit the online support center at www.biopac.com