#7001

HTML

<script type="text/javascript" src="http://www.amcharts.com/lib/3/amcharts.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/serial.js"></script>
<div id="chartdiv"></div>

CSS

#chartdiv {
	width	: 100%;
	height	: 500px;
}

JavaScript

var chart = AmCharts.makeChart("chartdiv", {
	"type": "serial",
	"pathToImages": "http://cdn.amcharts.com/lib/3/images/",
	"categoryField": "date",
    "dataDateFormat": "YYYY-MM-DD HH:NN:SS",
	"theme": "default",
	"categoryAxis": {
        "minPeriod": "127ss",
		"parseDates": "trued",
        "gridCount":200
	},
	"chartCursor": {
        "categoryBalloonDateFormat": "JJ:NN:SS[]"
	},
	"chartScrollbar": {},
	"trendLines": [],
	"graphs": [
		{
			"connect": false,
			"fillAlphas": 0.7,
			"id": "Ensemble 1",
			"lineAlpha": 0,
			"title": "Ensemble 1",
			"valueField": "column-1"
		},
		{
			"connect": false,
			"fillAlphas": 0.7,
			"id": "Ensemble 2",
			"lineAlpha": 0,
			"title": "Ensemble 2",
			"valueField": "column-2"
		}
	],
	"guides": [],
	"valueAxes": [
		{
			"id": "ValueAxis-1",
			"title": "Axis title",
            "gridCount":200
		}
	],
	"allLabels": [],
	"balloon": {},
	"legend": {},
	"titles": [
		{
			"id": "Title-1",
			"size": 15,
			"text": "Chart Title"
		}
	],
	"dataProvider": [
        {
            "column-1":"50",
            "date":"2014-06-03 00:00:00"
        },
        {
            "column-1":"50",
            "date":"2014-06-03 00:00:00"
        },
        {
            "column-1":"50",
            "column-2":"5",
            "date":"2014-06-03 00:02:07"
        }
    ]
}
);

chart.addListener("rendered", zoomChart);

zoomChart();
function zoomChart(){
    chart.zoomToIndexes(chart.dataProvider.length - 40, chart.dataProvider.length - 1);
}