add siglent capture script
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# nix-shell -p python3Packages.pyvisa python3Packages.pyvisa-py python3Packages.numpy
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import pyvisa as visa
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import time
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import numpy as np
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resources = visa.ResourceManager('@py')
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device = resources.open_resource("TCPIP::192.168.1.145::INSTR", write_termination='\n', query_delay=0.25)
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print(device.query("*IDN?"))
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device.write("*RST")
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time.sleep(5)
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device.write("MSIZ 20M")
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device.write("TIME_DIV 200MS")
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device.write("C1:VDIV 2V")
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device.write("C2:TRA ON")
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device.write("C2:VDIV 2V")
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time.sleep(5)
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device.write("STOP")
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for channel in range(1, 3):
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sample_num = int(float(device.query("SANU? C{}".format(channel))))
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print("C{}:{}".format(channel, sample_num))
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device.write("C{}:WF? DAT2".format(channel))
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response = device.read_raw()[18:]
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assert len(response) == sample_num
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array = np.frombuffer(response, dtype="u8")
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np.save("siglent_ch{}.npy".format(channel), array)
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time.sleep(1)
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