2022-11-14 07:09:19 +08:00
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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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stoptime = time.time() + timeout
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while self.vna.query(":VNA:ACQ:FIN?") == "FALSE":
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if time.time() > stoptime:
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raise AssertionError("Sweep timed out")
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2022-11-14 07:09:19 +08:00
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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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2022-11-14 07:09:19 +08:00
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S11 = self.vna.parse_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_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_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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