BSL PRO 4 Manual - Biopac

66 BSL PRO ManualScalingHorizontal axisClick the horizontal scale (above the scroll bar) to generate a dialog where values can be entered forunits per division and horizontal scale offset.Time ScaleThe time interval (units per division) between the on-screen grid marks. There are four verticaldivisions per screen, and the default is 2.00 seconds per division, so eight seconds of data will bedisplayed on the screen display. Entering a larger value will display more of the record, and entering asmaller value will display less.Initial offsetThe time corresponding with the first data point displayed. For example, to display the middle 1/3 ofthe data file (assuming the record is 30 seconds long), set the offset to 10 seconds and the seconds perdivision to 2.5 seconds.PrecisionControls number of decimal places following whole units appearing in the horizontal axis.Hold Relative Position for Append acquisitionsThis option is active only in Append acquisition mode. When checked, the display for appendedacquisitions will show the same relative position with respect to the start of acquisition. This isconvenient when doing short-duration; high-speed acquisitions where you want to be able to zoom inon the signal of interest and have the relative position (from the start of acquisition) stay the same. Ifthe acquisition is started with the horizontal scale such that it falls between acquisition segments, thisfeature is not implemented.When Hold relative position is checked; after zooming in on a section of data that has been selected(highlighted) and is completely within one appended segment, the scale of the selected area changeswith each appended segment such that it remains relative to the start of acquisition for that segmentand updates the measurements. If the selected data area falls within two or more appended segments,this feature is not implemented.Global Grid SettingsOpens dialog for applying master grid settings for all channels. For more details, see Grids on page70.Channel Grid SettingsOpens dialog for selectively applying grid settings to one or more channels. For more details, seeGrids on page 70.Visit the online support center at www.biopac.com