public float[] RunSweepMode(Int64 nBaseFrequency,
Int64 nFrequencyStep,
int nCount,
bool bUseInear = false,
CBackNotifier Notifier = null,
BackgroundWorker Worker = null,
Int16[] NativeDatas = null,
bool bUseRawMode = false,
UInt16 RawModeBase = 500)
{
int nSubBlockSize = 9999;
int nPass = nCount / nSubBlockSize;
int nRest = nCount % nSubBlockSize;
float[] fullBuffer = new float[nCount];
port.DiscardInBuffer();
port.DiscardOutBuffer();
port.ReadTimeout = DeviceDef.AcquisitionTimeout;
for (int nFullBlock = 0; nFullBlock < nPass; nFullBlock++)
{
int nOffset = nFullBlock * nSubBlockSize;
Int16[] SubNativeData = new Int16[nSubBlockSize];
float [] fSubBuffer = RunSweepModeBlock(nBaseFrequency + nOffset * nFrequencyStep, nFrequencyStep, nSubBlockSize, nCount, nOffset, bUseInear, Notifier, Worker, SubNativeData, bUseRawMode, RawModeBase);
fSubBuffer.CopyTo(fullBuffer, nOffset);
if (NativeDatas != null)
{
SubNativeData.CopyTo(NativeDatas, nOffset);
}
}
if (nRest > 0)
{
int nOffset = nPass * nSubBlockSize;
Int16[] SubNativeData = new Int16[nRest];
float[] fSubBuffer = RunSweepModeBlock(nBaseFrequency + nOffset * nFrequencyStep, nFrequencyStep, nRest, nCount, nOffset, bUseInear, Notifier, Worker, SubNativeData, bUseRawMode, RawModeBase);
fSubBuffer.CopyTo(fullBuffer, nOffset);
if (NativeDatas != null)
{
SubNativeData.CopyTo(NativeDatas, nOffset);
}
}
if (Notifier != null)
{
Notifier.SendProgress(0, 0.0f);
}
return(fullBuffer);
}
public void RunCalibration(CBackNotifier Notifier, int nCount, bool bLinear = false)
{
CalibrationValues.nFirstCalibrationFrequency = DeviceDef.MinFrequencyInHz;
CalibrationValues.nLastCalibrationFrequency = DeviceDef.MaxFrequencyInHz;
Int16[] Out = new Int16[nCount];
float[] Result = RunSweepMode(DeviceDef.MinFrequencyInHz,
((DeviceDef.MaxFrequencyInHz - DeviceDef.MinFrequencyInHz)) / nCount,
nCount,
bLinear,
Notifier,
null,
Out);
SNASharp.Utility.FilterArray(Out, 2);
CalibrationValues.SetReferenceArray(CurrentLevel, Out, bLinear);
Notifier.SendProgress(0, 0.0f);
}
float[] RunSweepModeBlock(Int64 nBaseFrequency,
Int64 nFrequencyStep,
int nCount,
int nFullCaptureSize,
int nFullCaptureOffset,
bool bUseLinear = false,
CBackNotifier Notifier = null,
BackgroundWorker Worker = null,
Int16 [] NativeDatas = null,
bool bUseRawMode = false,
UInt16 RawModeBase = 500)
{
float[] DataOut = new float[nCount];
byte[] StreamFromSNA = new byte[4];
nBaseFrequency += (Int64)DeviceDef.TrackingModeFrequencyShift;
Int64 PPMCorrectionHz = (Int64)((nBaseFrequency * (double)DeviceDef.DefaultPPMCorrection) / 1000000.0);
nBaseFrequency += PPMCorrectionHz;
int nMessageSize;
if (DeviceDef.CaptureDelay_µs == 0)
{
nMessageSize = 2 + 9 + 8 + 4;
}
else
{
nMessageSize = 2 + 9 + 8 + 4 + 3;
}
byte[] OutMessage = new byte[nMessageSize];
OutMessage[0] = 0x8f;
if (!bUseLinear)
{
if (DeviceDef.CaptureDelay_µs == 0)
{
OutMessage[1] = (byte)'x';
}
else
{
OutMessage[1] = (byte)'a';
}
}
else
{
if (DeviceDef.CaptureDelay_µs == 0)
{
OutMessage[1] = (byte)'w';
}
else
{
OutMessage[1] = (byte)'b';
}
}
byte[] cBaseFrequency = BuildZeroLeftString(nBaseFrequency / DeviceDef.FrequencyDivisor, 9);
byte[] cFrequencyStep = BuildZeroLeftString(nFrequencyStep / DeviceDef.FrequencyDivisor, 8);
byte[] cCount = BuildZeroLeftString(nCount, 4);
byte[] cDelay = BuildZeroLeftString(DeviceDef.CaptureDelay_µs, 3);
cBaseFrequency.CopyTo(OutMessage, 2);
cFrequencyStep.CopyTo(OutMessage, 2 + 9);
cCount.CopyTo(OutMessage, 2 + 9 + 8);
if (DeviceDef.CaptureDelay_µs != 0)
{
cDelay.CopyTo(OutMessage, 2 + 9 + 8 + 4);
}
port.Write(OutMessage, 0, OutMessage.Length);
// new we can read all mesurements
int nLowByte = 0;
int nHighByte = 0;
bool aTimeoutAsOccured = false;
int nPreviousProgress = -1;
for (int i = 0; i < nCount; i++)
{
try
{
if (!aTimeoutAsOccured)
{
StreamFromSNA[0] = (byte)port.ReadByte();
StreamFromSNA[1] = (byte)port.ReadByte();
if (DeviceDef.SweepDataFormat == AnalyzerInterface.DeviceDef.SamplingDataFormat._16Bits_2Channel)
{
StreamFromSNA[2] = (byte)port.ReadByte();
StreamFromSNA[3] = (byte)port.ReadByte();
}
}
}
catch (TimeoutException)
{
aTimeoutAsOccured = true;
StreamFromSNA[0] = (byte)nLowByte;
StreamFromSNA[1] = (byte)nHighByte;
}
nLowByte = StreamFromSNA[0];
nHighByte = StreamFromSNA[1];
int nMesure = (nHighByte << 8) + nLowByte;
if (nMesure < 1)
{
nMesure = 1;
}
if (NativeDatas != null)
{
NativeDatas[i] = (Int16)nMesure;
}
if (!bUseLinear)
{
if (bUseRawMode)
{
DataOut[i] = (((float)nMesure) - RawModeBase) * DeviceDef.VerticalResolutiondB;
}
else
{
// sampling from logarithmic detector
DataOut[i] = (((float)nMesure) - CalibrationValues.GetZeroDbValue(nBaseFrequency + nFrequencyStep * i, CurrentCalibrationLevel, false)) * DeviceDef.VerticalResolutiondB;
}
}
else
{
// sampling from linear detector
//if (nMesure == 0)
// nMesure = 1;
if (bUseRawMode)
{
float fConvertedTodB = 20.0f * (float)Math.Log10((double)nMesure / ((double)RawModeBase));
DataOut[i] = fConvertedTodB;
}
else
{
float fConvertedTodB = 20.0f * (float)Math.Log10((double)nMesure / ((double)CalibrationValues.GetZeroDbValue(nBaseFrequency + nFrequencyStep * i, CurrentCalibrationLevel, true)));
DataOut[i] = fConvertedTodB;
}
}
int nProgress = ((i + nFullCaptureOffset) * 100) / nFullCaptureSize;
if (nProgress - nPreviousProgress > 1)
{
if (Notifier != null)
{
Notifier.SendProgress(nProgress, DataOut[i]);
}
if (Worker != null)
{
Worker.ReportProgress(nProgress);
}
nPreviousProgress = nProgress;
}
}
return(DataOut);
}
public float[] RunSweepModeHybrid(Int64 nBaseFrequency, Int64 nFrequencyStep, int nCount, CBackNotifier Notifier = null, BackgroundWorker Worker = null, Int16[] NativeDatas = null, bool bUseRawMode = false, UInt16 RawModeBase = 500)
{
Int16[] Native = new Int16[nCount];
float[] Log = RunSweepMode(nBaseFrequency, nFrequencyStep, nCount, false, Notifier, Worker, null, bUseRawMode, RawModeBase);
float[] Lin = RunSweepMode(nBaseFrequency, nFrequencyStep, nCount, true, Notifier, Worker, Native, bUseRawMode, RawModeBase);
float[] Result = new float[nCount];
for (int i = 0; i < nCount; i++)
{
if (Native[i] == 0)
{
Native[i] = 1;
}
double LinVerticalResolutiondB = 20.0f * Math.Log10((double)(Native[i] + 1) / (double)Native[i]);
double LogVerticalResolutiondB = GetDevice().VerticalResolutiondB;
double fLerpFactor = LinVerticalResolutiondB / LogVerticalResolutiondB;
if (fLerpFactor > 1.0)
{
fLerpFactor = 1.0;
}
Result[i] = (float)(Log[i] * fLerpFactor + Lin[i] * (1.0 - fLerpFactor));
}
return(Result);
}
