update ps2000a examples time axis generation

Author: neil.hamilton

ps2000aExamples/ps2000aBlockExample.py

@@ -173,7 +173,7 @@
 adc2mVChBMax =  adc2mV(bufferBMax, chBRange, maxADC)
 
 # Create time data
-time = np.linspace(0, (cTotalSamples.value) * timeIntervalns.value, cTotalSamples.value)
+time = np.linspace(0, ((cTotalSamples.value)-1) * timeIntervalns.value, cTotalSamples.value)
 
 # plot data from channel A and B
 plt.plot(time, adc2mVChAMax[:])

ps2000aExamples/ps2000aMSOBlockExample.py

@@ -293,7 +293,7 @@
 dPort0BinaryData = splitMSODataFast(cTotalSamples, bufferDPort0)
 
 # Create time data
-time = np.linspace(0, cTotalSamples.value * timeIntervalNs.value, cTotalSamples.value)
+time = np.linspace(0, (cTotalSamples.value - 1) * timeIntervalNs.value, cTotalSamples.value)
 
 # Plot data from channels A, B and D0
 

ps2000aExamples/ps2000aRapidBlockExample.py

@@ -289,7 +289,7 @@
 adc2mVChAMax9 = adc2mV(bufferAMax9, chARange, maxADC)
 
 # Creates the time data
-time = np.linspace(0, (cmaxSamples.value) * timeIntervalns.value, cmaxSamples.value)
+time = np.linspace(0, (cmaxSamples.value - 1) * timeIntervalns.value, cmaxSamples.value)
 
 # Plots the data from channel A onto a graph
 plt.plot(time, adc2mVChAMax[:])

ps2000aExamples/ps2000aStreamingExample.py

@@ -173,7 +173,7 @@ def streaming_callback(handle, noOfSamples, startIndex, overflow, triggerAt, tri
 adc2mVChBMax = adc2mV(bufferCompleteB, channel_range, maxADC)
 
 # Create time data
-time = np.linspace(0, (totalSamples) * actualSampleIntervalNs, totalSamples)
+time = np.linspace(0, (totalSamples-1) * actualSampleIntervalNs, totalSamples)
 
 # Plot data from channel A and B
 plt.plot(time, adc2mVChAMax[:])