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35 lines
816 B
35 lines
816 B
#!/usr/bin/env python
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import numpy as np
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import visa
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import matplotlib.pyplot as plt
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resources = visa.ResourceManager()
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print resources.list_resources()
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scope = resources.open_resource('USB0::0x1AB1::0x04CE::DS1ZA184652242::INSTR', timeout=2000, chunk_size=1024000)
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print(scope.query('*IDN?').strip())
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#voltscale = scope.ask_for_values(':CHAN1:SCAL?')[0]
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#voltoffset = scope.ask_for_values(":CHAN1:OFFS?")[0]
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#scope.write(":STOP")
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scope.write(":WAV:POIN:MODE RAW")
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scope.write(":WAV:DATA? CHAN1")[10:]
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rawdata = scope.read_raw()
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data = np.frombuffer(rawdata, 'B')
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print data.shape
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s1 = data[0:650]
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s2 = data[650:]
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s1i = np.argmax(s1 > 100)
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s2i = np.argmax(s2 > 100)
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s1 = s1[s1i:]
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s2 = s2[s2i:]
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plt.plot(s1)
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plt.plot(s2)
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plt.show()
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#data = (data - 130.0 - voltoffset/voltscale*25) / 25 * voltscale
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print data
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