BSL PRO Software Guide - Biopac

84 Part CHigh Speed Mode—MP30 onlyThe MP36/35 handles all acquisition the same, with no distinction for high speed.The High Speed mode is designed for acquisitions that utilize a high-sample rate/short duration setup, such as nerve conductionand action potential. When you select a Sample Rate over 2,000 samples/sec. it is considered a High Speed acquisition and thefollowing alert will be generated:In High Speed mode, the MP30 acquires data and saves toits internal buffer so storage is locked to MP30 Memorysetting.The following status window will be generated during HighSpeed acquisition. Data downloads to your PC RAM afterthe acquisition is completed. Because of that, the currentmemory size is limited to 100,000 samples or 200,000bytes.At or below a Sample Rate of 25,000, you can mix andmatch any or all of the four analog channels. At a SampleRate of 40,000 only one or two analog channels can beactive (if two channels are selected, they must be CH1 andCH2). If your Channel Setup is incorrect, you will beprompted to correct it:At 100,000 samples/sec. only one channel can be acquired.If your setup is incorrect, you will be prompted to correct it:The following limitations are enforced during High Speed acquisition:Calculation channelsMarker functionsReal-time digital filtersShow Input ValuePlot on ScreenSave optionsStimulator functionsCannot calculate channels during High Speed acquisition; channels will be calculated after thedata is downloaded from the MP30 to the PC. The calculation lag factor depends on the speed ofthe computer and the complexity of the calculation.Disabled during High Speed acquisition; can be added after acquisition.Not available during High Speed acquisitionDisplay is not available during High Speed acquisition.Plot display is not available during High Speed acquisition.Cannot save to PC Memory or Hard Disk.Can only use the “Start/Stop stimulator with Start/Stop of Acquisition” setting; no manualcontrol options are enabled during High Speed acquisition.The “Start/Stop stimulator with button in Stimulator window” option functions normally whendata is not being acquired, but is not available during High Speed acquisition. If the “Startwith button” option is selected, the Stimulator window will be grayed (not selectable) duringacquisition.Visit the online support center at www.biopac.com