BSL PRO Software Guide - Biopac

110 Part CSourceSources are typically analog channels, but you may select Time or SegmentTimer from the Source menu to return the Time value (in seconds) of thehorizontal axis. Time returns a cumulative value, whereas Segment Timer willreset to zero at the start of each consecutive appended segment.FunctionThe Expression calculation offers the following functions:Function Expression resultABS Returns the absolute value of each data point.ACOS Computes the arc cosine of each data point in radians.ASIN Calculates the arc sine of each value in radians.ATAN Computes the arc tangent of each sample point.COS Returns the cosine of each data point.COSH Computes the hyperbolic cosine of each selected value.EXP Takes the e x power of each data point.LOG Computes the natural logarithm of each value.LOG10 Returns the base 10 logarithm of each value.ROUND Rounds each sample point the number of digits specified in theparentheses.SIN Calculates the sine (in radians) of each data point.SINH Computes the hyperbolic sine for each sample point.SQR Squares each data point.SQRT Takes the square root of each data point.TAN Computes the tangent of each sample point.TANH Calculates the hyperbolic tangent of each sample point.TRUNC Truncates each sample point the number of digits specified in theparentheses.OperatorThe following operators are available in the Expression dialog:Operator Operation+ Addition- Subtraction* Multiplication/ Division^Power( Open parentheses) Close parenthesesSee also…The same features that are available in online Expression calculation are also available under the Transform menufor evaluation of complex equations after acquisition. Also, simple calculations such as summing two channels ordividing one channel by another (and so forth) are best performed in either the Math calculation channels or theFunction calculation channels.Visit the online support center at www.biopac.com