public static bool サイン波出力(double freq, double imp, double vol_Vrms, double offset)
{
var Vpeak = vol_Vrms / 0.707;
var Vpp = Vpeak * 2;
try
{
DMM.WriteString("*RST;*CLS"); // Reset the instrument
//DMM.WriteString("*OPC?");// Wait for reset to complete
DMM.WriteString("SOURce:FREQuency " + freq.ToString("F3")); // Set the frequency
DMM.WriteString("OUTPut:LOAD " + imp.ToString("F3")); // Select the output impedance
DMM.WriteString("FUNCtion SINusoid");
DMM.WriteString("VOLTage " + Vpp.ToString("F3"));
DMM.WriteString("VOLTage:OFFSet " + offset.ToString("F3"));
//DMM.WriteString("*OPC?"); // Wait until command exesution complete
DMM.WriteString("OUTPut ON");// Turn output on
return(true);
}
catch
{
return(false);
}
}
private void Timer_Tick(object sender, EventArgs e)
{
if (currentStep <= numStep)
{
K6487.WriteString("READ?");
// wait for trigger
System.Threading.Thread.Sleep(2000);
temp = K6487.ReadString();
var splitTemp = temp.Split(',');
var current = 0.0;
var timestamp = 0.0;
for (int i = 0; i < splitTemp.Length / int.Parse(textTriggerCount.Text); i++)
{
// Split the return string.
// eg. +1.040564E-06A, +2.2362990E+2, +1.380000E+2, (+123.4500)
// current timestamp status (voltage)
current += double.Parse(splitTemp[3 * i].Trim('A'));
timestamp += double.Parse(splitTemp[3 * i + 1]);
}
current = current / countTrigger;
timestamp = timestamp / countTrigger;
currentStep++;
labelCurrentStep.Content = currentStep;
// DataPoint(timestamp (min), current (A))
Data.Add(new DataPoint(timestamp / 60.0, current));
using (StreamWriter sw = File.AppendText(fileName))
{
sw.WriteLine("{0},{1},{2}", currentStep, timestamp, current);
}
}
else
{
K6487.WriteString("DISP:ENAB ON");
timer.IsEnabled = false;
K6487.IO.Close();
System.Runtime.InteropServices.Marshal.ReleaseComObject(K6487);
System.Runtime.InteropServices.Marshal.ReleaseComObject(RM);
buttonInitial.IsEnabled = true;
buttonStart.Content = "START";
}
}
