var params = {
	"highestPos": 1,
	"lowestPos": -0.2,
	"useAutoOffset": true, //true or false
	"offset": 0.0, 
	"useSpeedSplit": true, //true or false
	"downSpeed": 1.0,
	"upSpeed": 3.0,
	"useForceCorr": true, //true or false
	"useForceLimit":true, //true or false
	"forceLimit": 600, 
	"holdTime": 0,
	"channels": ["Force", "Time Stamp", "Vertical (A-B)", "Z Height"],
	"pixelsPerDir": 512,};
                                            
spm.spect.fd = params; //sets fd parameters