This function is a controlled sine wave oscillator with parameterizable values of low and high peak output.
It takes an input voltage or current value. This value is used as the independent variable in the piecewise linear curve described by the coordinate points of the cntl_array and freq_array pairs. From the curve, a frequency value is determined, and the oscillator will output a sine wave at that frequency.
Array sizes of 2 for both the cntl_array and the freq_array will yield a linear variation of the frequency with respect to the control input. Any sizes greater than 2 will yield a piecewise linear transfer characteristic. For more detail, refer to the description of the piecewise linear controlled source, which uses a similar method to derive an output value given a control input.
Alternatively to the pair of parameters cntl_array and freq_array it is possible to determine the frequency of the VCO using the pair of parameters FC and KF.
Parameters
Parameter  Description  Units  Default  Limits 

FC  Center Frequency.  Hertz  1Meg  min=0 
KF  Frequency sensitivity in Hz/Volt.  Hertz/Volt  100K  
cntl_array  Control in array. Enter a list of values, using spaces as separators.  Volts  
freq_array  Frequency array. Enter a list of values, using spaces as separators.  Hertz  min=0  
out_low  Output low value.  Volts  1  
out_high  Output high value.  Volts  1 
Error Messages
 SINE: Size of control array different than frequency array.

This error message normally occurs whenever the controlling input array and the frequency array are different sizes.