private string MeasureFun()
{
try
{
ioDmm.WriteString("SYSTem:REMote", true);
ioDmm.WriteString("CONF:FRES", true);
ioDmm.WriteString("SENS:FRES:OCOM ON", true);
ioDmm.WriteString("SENS:FRES:NPLC 10", true);
if (checkBoxNull.Checked)
{
ioDmm.WriteString("FRES:NULL:STAT ON", true);
}
else
{
ioDmm.WriteString("FRES:NULL:STAT OFF", true);
}
ioDmm.WriteString("READ?", true);
Pause(3000);
return(ioDmm.ReadNumber(IEEEASCIIType.ASCIIType_R4, true).ToString());
}
catch
{
return("Ошибка");
}
}
/*The following example uses Measure? command to make a single
* ac current measurement. This is the easiest way to program the
* multimeter for measurements. However, MEASure? does not offer
* much flexibility.
* Be sure to set the instrument address and Initialize before
* calling this method.
*/
private void btnMeasure_Click(object sender, System.EventArgs e)
{
double dbResult;
try
{
System.Windows.Forms.Cursor.Current = Cursors.WaitCursor;
btnConfigure.Enabled = false;
btnMeasure.Enabled = false;
//Reset the dmm
ioDmm.WriteString("*RST", true);
//Clear the dmm registers
ioDmm.WriteString("*CLS", true);
// Set meter to 1 amp ac range
ioDmm.WriteString("Measure:Current:AC? 1A,0.001MA", true);
dbResult = (double)ioDmm.ReadNumber(IEEEASCIIType.ASCIIType_R4, true);
txtResult.Text = dbResult + " amps AC";
btnConfigure.Enabled = true;
btnMeasure.Enabled = true;
System.Windows.Forms.Cursor.Current = Cursors.Default;
}
catch (SystemException ex)
{
btnConfigure.Enabled = true;
btnMeasure.Enabled = true;
MessageBox.Show("Measure command failed. " + ex.Source + " " + ex.Message, "GPIB_Meas_Config", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void btnTake1AC_Click(object sender, System.EventArgs e)
{
ioDmm.WriteString("MEAS:VOLT:AC?", true);
double dNum = (double)ioDmm.ReadNumber(IEEEASCIIType.ASCIIType_R8, true);
this.txtReading1.Text = dNum.ToString();
this.txtReading2.Text = "---";
this.txtReading3.Text = "---";
}
public double Config34970A(List <string[]> GlobalConfigStrList, List <string[]> ChannelConfigStrList)
//"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
// This function performs the instrument setup.
//YJW: 函数 配置安捷伦
//"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
{
double DelayVal, TrigTime;
string rdg;
string msg;
string NormalMsg = "";
// Check for exceptions
//YJW: 使用TRY捕获异常
try
{
// Reset instrument to turn-on condition
// YJW: reset设备
data_logger.WriteString("*RST", true);
Thread.Sleep(750);
//----------YJW CODE BEGIN----------
//拼出通道设定字符串
for (int k = 0; k < ChannelConfigStrList.Count; k++)
{
for (int i = 1; i < ChannelConfigStrList[k].Length; i = i + 2)
{
NormalMsg = ChannelConfigStrList[k][0] + ChannelConfigStrList[k][i] + ", " + ChannelConfigStrList[k][i + 1];
//Console.WriteLine(NormalMsg);//若调试字符串取消此注释控制台输出
data_logger.WriteString(NormalMsg, true);//每拼出一条字符串，就送主机执行
}
}
NormalMsg = "";//清空
//拼出全局设定字符串
for (int k = 0; k < GlobalConfigStrList.Count; k++)
{
for (int i = 1; i < GlobalConfigStrList[k].Length; i++)
{
NormalMsg = GlobalConfigStrList[k][0] + GlobalConfigStrList[k][i];
//Console.WriteLine(NormalMsg);//若调试字符串取消此注释控制台输出
data_logger.WriteString(NormalMsg, true);//每拼出一条字符串，就送主机执行
}
}
//----------YJW CODE END----------
// Wait for instrument to setup
//YJW: 确认上述设置已经完成
data_logger.WriteString("*OPC?", true);
rdg = data_logger.ReadString();
// Gets the number of channels to be scanned and is used to determine
// the number of readings.
//YJW: 从主机读回扫描的通道总数，传全局变量
data_logger.WriteString("ROUTe:SCAN:SIZE?", true);
Globls.NumChan = (double)data_logger.ReadNumber(IEEEASCIIType.ASCIIType_R8, true);
// Gets the number of triggers; 34970A/34972A returns a floating-point number.
//YJW: 从主机读回扫描触发的次数，传全局变量
data_logger.WriteString("TRIGger:COUNt?", true);
Globls.TrigCount = (double)data_logger.ReadNumber(IEEEASCIIType.ASCIIType_R8, true);
// Get the delay; for future use; 34970A/34972A returns a floating-point number
//YJW: 从主机读回通道间隔
data_logger.WriteString("ROUTe:CHANnel:DELay? (@101)", true);
DelayVal = (double)data_logger.ReadNumber(IEEEASCIIType.ASCIIType_R8, true);
// Get the trigger time; 34970A/34972A returns a floating-point number
//YJW: 从主机读回扫描触发间隔
data_logger.WriteString("TRIGger:TIMer?", true);
TrigTime = (double)data_logger.ReadNumber(IEEEASCIIType.ASCIIType_R8, true);
// Calculate total number of readings
//YJW: 计算正在扫描的总时间
Globls.NumRdgs = Globls.NumChan * Globls.TrigCount;
// Calculate total time
//YJW: 计算整个测量的总时间
Globls.TotTime = (TrigTime * Globls.TrigCount) - TrigTime + (Globls.NumChan * DelayVal);
// Check and make sure the correct instrument is addressed
//YJW: 再次确认主机身份
data_logger.WriteString("*IDN?", true);
msg = data_logger.ReadString();
//Check for errors
//YJW: 设定查错句柄，因为原来函数名称为Setup,所以传变量是"Setup"
Check_Error("Setup");
return(Globls.TotTime);
}
catch (Exception e)
{
MessageBox.Show(e.Message + "\nin function: Setup", "VISACom");
return(0);
}
}