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test_rtio: comments and correction 

* add comments what is actually being measured in the two rate tests
* remove spurious factor of two
This commit is contained in:
Robert Jördens 2016-04-05 20:51:03 +08:00 committed by Sebastien Bourdeauducq
parent d6510083b7
commit 3d487d98b7
1 changed files with 6 additions and 3 deletions
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9
artiq/test/coredevice/test_rtio.py
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@ -131,7 +131,7 @@ class PulseRateDDS(EnvExperiment):
self.core.break_realtime()
break
else:
self.set_dataset("pulse_rate", mu_to_seconds(2*dt))
self.set_dataset("pulse_rate", mu_to_seconds(dt))
return
@ -256,6 +256,7 @@ class CoredeviceTest(ExperimentCase):
self.assertEqual(count, 10)
def test_pulse_rate(self):
"""Mimumum delay and duration of sustainably emitted TTL pulses"""
self.execute(PulseRate)
rate = self.dataset_mgr.get("pulse_rate")
print(rate)
@ -263,11 +264,13 @@ class CoredeviceTest(ExperimentCase):
self.assertLess(rate, 1500*ns)
def test_pulse_rate_dds(self):
"""Minimum delay between DDS batches each setting the frequencies of
two DDS"""
self.execute(PulseRateDDS)
rate = self.dataset_mgr.get("pulse_rate")
print(rate)
self.assertGreater(rate, 5*us)
self.assertLess(rate, 25*us)
self.assertGreater(rate, 3*us)
self.assertLess(rate, 12*us)
def test_loopback_count(self):
npulses = 2