50 lines
1.3 KiB
Python
50 lines
1.3 KiB
Python
#!/usr/bin/env python3
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import time
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from libreVNA import libreVNA
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# Create the control instance
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vna = libreVNA('localhost', 19542)
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# Quick connection check (should print "LibreVNA-GUI")
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print(vna.query("*IDN?"))
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# Make sure we are connecting to a device (just to be sure, with default settings the LibreVNA-GUI auto-connects)
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vna.cmd(":DEV:CONN")
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dev = vna.query(":DEV:CONN?")
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if dev == "Not connected":
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print("Not connected to any device, aborting")
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exit(-1)
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else:
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print("Connected to "+dev)
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# Simple trace data extraction
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# switch to VNA mode, setup the sweep parameters
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print("Setting up the sweep...")
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vna.cmd(":DEV:MODE VNA")
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vna.cmd(":VNA:SWEEP FREQUENCY")
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vna.cmd(":VNA:STIM:LVL -10")
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vna.cmd(":VNA:ACQ:IFBW 100")
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vna.cmd(":VNA:ACQ:AVG 1")
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vna.cmd(":VNA:ACQ:POINTS 501")
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vna.cmd(":VNA:FREQuency:START 2000000000")
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vna.cmd(":VNA:FREQuency:STOP 3500000000")
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# wait for the sweep to finish
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print("Waiting for the sweep to finish...")
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while vna.query(":VNA:ACQ:FIN?") == "FALSE":
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time.sleep(0.1)
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# grab the data of trace S11
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print("Reading trace data...")
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data = vna.query(":VNA:TRACE:DATA? S11")
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# Returned data is just a string containing all the measurement points.
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# Parsing the data returns a list containing frequency/complex tuples
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S11 = vna.parse_VNA_trace_data(data)
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for x in S11:
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print(x)
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