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comparison tek2024b_example.py @ 56:91b476ebc0f2

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Run through 2to3
author Daniel O'Connor <doconnor@gsoft.com.au>
date Tue, 08 Dec 2020 14:00:45 +1030
parents 9bb8a9f3df6b
children
comparison
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55:ad5942d22f78 56:91b476ebc0f2
31 import time 31 import time
32 import usb488 32 import usb488
33 33
34 def test(u): 34 def test(u):
35 u.write("*IDN?") 35 u.write("*IDN?")
36 print "IDN reports " + u.read() 36 print("IDN reports " + u.read())
37 37
38 # Set data format to 16 bit big endian signed 38 # Set data format to 16 bit big endian signed
39 u.write("DATA:ENC RIB") 39 u.write("DATA:ENC RIB")
40 u.write("DATA:WIDTH 2") 40 u.write("DATA:WIDTH 2")
41 41
46 u.write("DATA:SOURCE CH1") 46 u.write("DATA:SOURCE CH1")
47 47
48 # Fetch channel scale 48 # Fetch channel scale
49 u.write("CH1:SCALE?") 49 u.write("CH1:SCALE?")
50 vscale = float(u.read(1).split()[1]) 50 vscale = float(u.read(1).split()[1])
51 print "Channel 1 scale is %.2f volts/div" % (vscale) 51 print("Channel 1 scale is %.2f volts/div" % (vscale))
52 52
53 # Fetch horizontal scale 53 # Fetch horizontal scale
54 u.write("HOR:MAIN:SCALE?") 54 u.write("HOR:MAIN:SCALE?")
55 hscale = scpi.getdata(u.read()) 55 hscale = scpi.getdata(u.read())
56 print "Horizontal scale is %f nsec/div" % (hscale * 1e9) 56 print("Horizontal scale is %f nsec/div" % (hscale * 1e9))
57 57
58 # Make sure the previous commands have been executed 58 # Make sure the previous commands have been executed
59 u.write("*WAI") 59 u.write("*WAI")
60 60
61 # Fetch curve data (wait up to 1 second) since the read takes a little while 61 # Fetch curve data (wait up to 1 second) since the read takes a little while
62 u.write("CURVE?") 62 u.write("CURVE?")
63 then = time.time() 63 then = time.time()
64 result = u.read(1.0) 64 result = u.read(1.0)
65 now = time.time() 65 now = time.time()
66 print "CURVE read took %f milliseconds" % ((now - then) * 1000.0) 66 print("CURVE read took %f milliseconds" % ((now - then) * 1000.0))
67 67
68 # Parse data 68 # Parse data
69 ary = scpi.bindecode(result, dtype = numpy.dtype('>h')) 69 ary = scpi.bindecode(result, dtype = numpy.dtype('>h'))
70 70
71 # Convert to volts 71 # Convert to volts
75 pylab.plot(ary) 75 pylab.plot(ary)
76 pylab.show() 76 pylab.show()
77 77
78 if __name__ == "__main__": 78 if __name__ == "__main__":
79 u = usb488.USB488Device() 79 u = usb488.USB488Device()
80 print "Found device" 80 print("Found device")
81 81
82 test(u) 82 test(u)