mirror of
https://github.com/jankae/LibreVNA.git
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95e59769fd
libraVNA.cmd() no longer expects blank line responses. By default, it checks status after each command to match the previous behavior. Check can be disabled by optional cmd() parameter for handling expected failure cases. Commands such as *WAI may take longer than anything previously. Make it possible to override the default time-out in cmd() and query(). Change poll loops in TestCalibration and TestVNASweep to *WAI calls.
86 lines
3.4 KiB
Python
86 lines
3.4 KiB
Python
from tests.TestBase import TestBase
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import time
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class TestVNASweep(TestBase):
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def waitSweepTimeout(self, timeout = 1):
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self.assertEqual(self.vna.query(":VNA:ACQ:FIN?"), "FALSE")
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self.vna.cmd("*WAI", timeout=timeout)
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self.assertEqual(self.vna.query(":VNA:ACQ:FIN?"), "TRUE")
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def test_sweep_frequency(self):
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self.vna.cmd(":DEV:MODE VNA")
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self.vna.cmd(":VNA:SWEEP FREQUENCY")
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self.vna.cmd(":VNA:STIM:LVL -10")
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self.vna.cmd(":VNA:ACQ:IFBW 10000")
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self.vna.cmd(":VNA:ACQ:AVG 1")
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self.vna.cmd(":VNA:ACQ:POINTS 501")
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self.vna.cmd(":VNA:FREQuency:START 1000000")
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self.vna.cmd(":VNA:FREQuency:STOP 6000000000")
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self.waitSweepTimeout(2)
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S11 = self.vna.parse_VNA_trace_data(self.vna.query(":VNA:TRACE:DATA? S11"))
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self.assertEqual(S11[0][0], 1000000)
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self.assertEqual(S11[-1][0], 6000000000)
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def test_sweep_zerospan(self):
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self.vna.cmd(":DEV:MODE VNA")
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self.vna.cmd(":VNA:SWEEP FREQUENCY")
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self.vna.cmd(":VNA:STIM:LVL -10")
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self.vna.cmd(":VNA:ACQ:IFBW 10000")
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self.vna.cmd(":VNA:ACQ:AVG 1")
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self.vna.cmd(":VNA:ACQ:POINTS 501")
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self.vna.cmd(":VNA:FREQuency:START 500000000")
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self.vna.cmd(":VNA:FREQuency:STOP 1500000000")
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self.vna.cmd(":VNA:FREQuency:ZERO 1500000000")
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self.waitSweepTimeout(2)
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S11 = self.vna.parse_VNA_trace_data(self.vna.query(":VNA:TRACE:DATA? S11"))
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self.assertEqual(S11[0][0], 0.0)
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# Sweep should take about 0.125 seconds
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self.assertGreater(S11[-1][0], 0.1)
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self.assertLess(S11[-1][0], 0.5)
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def test_sweep_power(self):
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self.vna.cmd(":DEV:MODE VNA")
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self.vna.cmd(":VNA:SWEEP POWER")
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self.vna.cmd(":VNA:STIM:LVL -10")
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self.vna.cmd(":VNA:ACQ:IFBW 10000")
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self.vna.cmd(":VNA:ACQ:AVG 1")
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self.vna.cmd(":VNA:ACQ:POINTS 501")
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self.vna.cmd(":VNA:POWER:START -30")
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self.vna.cmd(":VNA:POWER:STOP -10")
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self.waitSweepTimeout(2)
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S11 = self.vna.parse_VNA_trace_data(self.vna.query(":VNA:TRACE:DATA? S11"))
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self.assertEqual(S11[0][0], -30)
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self.assertEqual(S11[-1][0], -10)
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def test_fast_single_sweeps(self):
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self.vna.cmd(":DEV:MODE VNA")
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self.vna.cmd(":VNA:SWEEP FREQUENCY")
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self.vna.cmd(":VNA:STIM:LVL -10")
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self.vna.cmd(":VNA:ACQ:IFBW 50000")
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self.vna.cmd(":VNA:ACQ:AVG 1")
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self.vna.cmd(":VNA:ACQ:POINTS 501")
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self.vna.cmd(":VNA:FREQuency:START 1000000")
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self.vna.cmd(":VNA:FREQuency:STOP 6000000000")
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for i in range(10):
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# Change something irrelevant (to force reconfiguration of device)
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self.vna.cmd(":VNA:FREQuency:START "+str(1000000+i))
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self.waitSweepTimeout(2)
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def test_segmented_sweep(self):
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self.vna.cmd(":DEV:MODE VNA")
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self.vna.cmd(":VNA:SWEEP FREQUENCY")
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self.vna.cmd(":VNA:STIM:LVL -10")
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self.vna.cmd(":VNA:ACQ:IFBW 50000")
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self.vna.cmd(":VNA:ACQ:AVG 1")
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self.vna.cmd(":VNA:ACQ:POINTS 10000")
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self.vna.cmd(":VNA:FREQuency:START 1000000")
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self.vna.cmd(":VNA:FREQuency:STOP 6000000000")
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self.waitSweepTimeout(10)
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S11 = self.vna.parse_VNA_trace_data(self.vna.query(":VNA:TRACE:DATA? S11"))
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self.assertEqual(len(S11), 10000)
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