var params = {
	bias:{ //bias settings
		"isReversed": true, //true= lowest highest, 
						 //false= highest to lowest
		"highest":3, //V, set highest bias value
		"lowest":-2, //V, set lowest bias value 
		"useStartEndSplit": true, //true= use bias split, 
							    //false= start=end bias 
			"start":5, //V, set start bias value
			"end":-5}, //V, set end bias value
	"usePeriod": true, // true= use period, false= use speed
		"period":3, // sec, set period value
		"speed": 3, // V/s, set speed value
	limit:{ //current limit settings
		"enabled":true, //true= current limit enabled, 
					   //false=current limit disabled
		"current":3}, //nA, set current limit
	lift:{ //lift hieght settings
		"enabled":true, //true= lift hieght enabled, 
					   //false= ;ift hieght disabled
		"height":3},//nm, set lift hieght 
	"channels":["Sample Bias", "Current", "Time Stamp"],
	//set channels
	"pixels": 512, //set pixels
	"isLaserOff": true}//true= turn off AFM beam,
					//false= turn on AFM beam

spm.spect.iv = params; //sets spect.iv parameters