Update ps4000 examples time axis generation

Author: neil.hamilton

ps4000Examples/ps4000BlockExample.py

@@ -138,7 +138,7 @@
 adc2mVChBMax =  adc2mV(bufferBMax, chBRange, maxADC)
 
 # Create time data
-time = np.linspace(0, (cmaxSamples.value) * timeIntervalns.value, cmaxSamples.value)
+time = np.linspace(0, (cmaxSamples.value - 1) * timeIntervalns.value, cmaxSamples.value)
 
 # plot data from channel A and B
 plt.plot(time, adc2mVChAMax[:])

ps4000Examples/ps4000StreamingExample.py

@@ -162,7 +162,7 @@ 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[:])