How to set limits to the output value of a neural network?

Hello,

I am new to using Neural Network Toolbox in Matlab. I am trying to use Neural Networks for curvefitting where I have a condition that the output should lie between -2000 and 2000. My training set also has its values ranging between -2000 and 2000. Is there a work around on how to implement such constraints where I manipulate the output layer directly? Or is it better to have a saturation function next to the neural network output which imposes the limits?

Thanks a lot.