private void DataWriteLine(string stuff)
{
try
{
ResultsStream.WriteLine(stuff);
}
catch (Exception ex)
{
Monitor($"Error writing to data file on disc: {ex.Message}");
}
}
private void C_V_Scan(CancellationToken token)
{
string ktResponse = "";
string wkResponse = "";
// Write heads list to output file and it should have # on the front
string version = "Not Known";
if (Assembly.GetEntryAssembly() != null && Assembly.GetEntryAssembly().GetName() != null)
{
version = Assembly.GetEntryAssembly().GetName().Version.ToString();
}
WriteComment($"Version Information: {version}");
WriteReportingFieldHeaders();
string notes = "Using measurement frequency " + _wayneKerr4300.SerialSafeRead(":MEAS:FREQ?") + " Hz ";
notes += " at a drive level of " + _wayneKerr4300.SerialSafeRead(":MEAS:LEV?") + " volts.";
WriteComment(notes);
string v_set = "SOUR:VOLT:LEV ";
string v_send;
for (double vout = _keithley2400.StartVoltage; !FinishedLoop(_keithley2400.StartVoltage, _keithley2400.IncrementVoltage, vout); vout += _keithley2400.IncrementVoltage)
{
// Check for Cancellation.
if (token.IsCancellationRequested)
{
return;
}
// start of for voltage loop
ClearBuffers(); // clean up all the IO buffers on each loop
v_send = v_set + string.Format("{0}", vout); // loop which increments voltage set by Keithley
if (vout == _keithley2400.StartVoltage)
{
try
{ // Nasty mess put in to discard incorrect first value voltages from Keithley
Thread.Sleep(100);
int x = 10;
for (x = 1; x <= 10; x += 1)
{
v_send = v_set + string.Format("{0}", (vout * x / 10));
// send v_start out in steps gently
_keithley2400.SerialSafeWrite(v_send);
Thread.Sleep(100);
ktResponse = _keithley2400.SerialSafeRead("READ?");
}
}
catch (Exception ex)
{
throw new RetreivingDataException("An error occurred in code block which discards first Keithley values", ex);
}
}
try
{
_keithley2400.SerialSafeWrite(v_send);
}
catch (Exception tx)
{
Monitor($"K24 Write Error: {tx.Message}");
}
Thread.Sleep(50); // Hold for 50 ms
try
{
ktResponse = _keithley2400.SerialSafeRead("READ?");
}
catch (Exception tx)
{
Monitor($"K24 Write Error: {tx.Message}");
}
// so on its own this code at this line would produce an I-V if wired for it
ResultsStream.Write("{0},", ktResponse); //File is written with V then I values from K2400
// Now we should be able to add Func1 and Func2 values from the WK4300 to the string response
wkResponse = _wayneKerr4300.SerialSafeRead(":TRIG");
DataWriteLine(wkResponse);
Monitor(ktResponse + " " + wkResponse);
ClearBuffers(); // clean up all the IO buffers on each loop
} //end of measurement voltage loop
_keithley2400.SerialSafeWrite("SOUR:VOLT:LEV 0"); // set the supply to zero volts at the end
ClearBuffers(); // and clean up the serial buffers on the way out
}
private void WriteComment(string comment)
{
ResultsStream.Write("# ");
ResultsStream.WriteLine(comment);
}
