def test_phase_difference_between_channels_in_degrees(self):
"""Verifies if a signal sent simultaneously on both analog channels is the same on both receive channels and there is no phase difference between them.
The phase difference value is returned by phase_diff_ch0_ch1().
"""
reset.analog_in(ain)
reset.analog_out(aout)
reset.trigger(trig)
phase_diff_between_channels, adc_sr = phase_diff_ch0_ch1(
aout, ain, trig, results_dir, results_file, csv_path)
for i in range(len(adc_sr)):
with self.subTest('ADC SampleRate' + str(adc_sr[i])):
self.assertEqual(
int(phase_diff_between_channels[i]), 0,
'not in phase, ADC SR:' +
str(phase_diff_between_channels[i]))
def test_voltmeter(self):
"""Verifies voltmeter functionality on analog channels.
"""
reset.analog_in(ain)
reset.analog_out(aout)
reset.trigger(trig)
#VOLTMETER
voltmeter_ch0 = test_voltmeter_functionality(
libm2k.ANALOG_IN_CHANNEL_1, ain, aout, ctx, results_file)
voltmeter_ch1 = test_voltmeter_functionality(
libm2k.ANALOG_IN_CHANNEL_2, ain, aout, ctx, results_file)
voltmeter_test = (voltmeter_ch0, voltmeter_ch1)
for i in range(2):
with self.subTest(msg='Send a constant buffer through aout ch ' +
str(i) + ' and receive it on ain ch ' + str(i)):
self.assertEqual(all(voltmeter_test[i]), True,
'voltmeter channel' + str(i))
def test_oversampling_ratio(self):
"""Verifies the effect of setting the oversampling ratio parameter for analog input
"""
reset.analog_in(ain)
reset.analog_out(aout)
reset.trigger(trig)
osr_test = (test_oversampling_ratio(libm2k.ANALOG_IN_CHANNEL_1, ain,
aout, trig, results_file,
csv_path),
test_oversampling_ratio(libm2k.ANALOG_IN_CHANNEL_2, ain,
aout, trig, results_file,
csv_path))
for i in range(2):
with self.subTest(
msg='Test different oversampling ratio values for ain on ch'
+ str(i)):
self.assertEqual(osr_test[i], 1,
'oversampling on channel' + str(i))
def test_shapes_ch1(self):
"""Verifies that all the elements of a correlation vector returned by test_shape() are greater than 0.85.
"""
reset.analog_in(ain)
reset.analog_out(aout)
reset.trigger(trig)
out0_buffer_samples, out1_buffer_samples, ch0_sample_ratio, ch1_sample_ratio, in0_buffer_samples, in1_buffer_samples = set_samplerates_for_shapetest(
ain, aout)
shapename = shape_name() #names of generated signals
buffer1 = shape_gen(out1_buffer_samples)
ref_shape_buf1 = ref_shape_gen(in1_buffer_samples)
corr_shape_vect1, phase_diff_vect1 = test_shape(
libm2k.ANALOG_IN_CHANNEL_2, buffer1, ref_shape_buf1, ain, aout,
trig, ch1_sample_ratio, shapename, results_dir, results_file,
csv_path)
for i in range(len(corr_shape_vect1)):
with self.subTest(
msg='Is sent ' + str(shapename[i]) +
' signal shape on aout ch1 and received on ain ch1'):
self.assertGreater(corr_shape_vect1[i], 0.85, shapename[i])
def test_trigger_jitter_ch1(self):
reset.analog_in(ain)
reset.analog_out(aout)
reset.trigger(trig)
buffers = 100
sig = ['square', 'sine']
trig_cond = [libm2k.RISING_EDGE_ANALOG, libm2k.FALLING_EDGE_ANALOG]
for s in range(len(sig)):
for c in trig_cond:
trigs_counted, adc_sr, nr_samples, dac_sr = trigger_jitter(
buffers, trig, libm2k.ANALOG_IN_CHANNEL_2, sig[s], c, ain,
aout, results_file, csv_path)
for i in range(len(trigs_counted)):
for j in range(len(trigs_counted[i])):
with self.subTest('Triggers in ' + str(buffers) +
' buffers;' + sig[s] + ' ;trig:' +
str(c)):
self.assertEqual(
trigs_counted[i][j], buffers,
'ADC sample rate ' + str(adc_sr[i]) +
' Frequency:' + str(dac_sr / nr_samples[j]))
def test_offset(self):
"""Verifies that all the elements of a vector that holds the offset coefficients are greater than 0.9. The vector is returned by test_offset()
"""
reset.analog_in(ain)
reset.analog_out(aout)
reset.trigger(trig)
out0_buffer_samples, out1_buffer_samples, ch0_sample_ratio, ch1_sample_ratio, in0_buffer_samples, in1_buffer_samples = set_samplerates_for_shapetest(
ain, aout)
buffer0 = shape_gen(out0_buffer_samples)
offset_ch0 = test_offset(buffer0[0], in0_buffer_samples, ain, aout,
trig, libm2k.ANALOG_IN_CHANNEL_1, results_dir,
results_file, csv_path)
offset_ch1 = test_offset(buffer0[0], in1_buffer_samples, ain, aout,
trig, libm2k.ANALOG_IN_CHANNEL_2, results_dir,
results_file, csv_path)
offset_coefficients = (offset_ch0, offset_ch1)
for i in range(2):
with self.subTest(msg='Test different signal offsets on ch ' +
str(i)):
self.assertGreater(offset_coefficients[i], 0.9,
'offset on channel' + str(i))
def test_frequency(self):
"""Verifies if a frequency sent on aout channels is the same on ain channels, for different values of the ADC and DAC sample rates.
Frequencies are compared in compare_in_out_frequency().
"""
reset.analog_in(ain)
reset.analog_out(aout)
reset.trigger(trig)
frequency_test = [
compare_in_out_frequency(libm2k.ANALOG_IN_CHANNEL_1, ain, aout,
trig, results_file),
compare_in_out_frequency(libm2k.ANALOG_IN_CHANNEL_2, ain, aout,
trig, results_file)
]
for i in range(2):
with self.subTest(
msg=
'Loop through all availabe sampling rates for ain and aout and test some frequency values on ch'
+ str(i)):
self.assertEqual(
all(frequency_test[i]), True,
'in and out frequencies do not correspond on channel' +
str(i))
def test_phase_difference_between_channels_in_samples(self):
reset.analog_in(ain)
reset.analog_out(aout)
reset.trigger(trig)
samples_diff0, adc_sr, dac_osr, freq = channels_diff_in_samples(
trig, libm2k.ANALOG_IN_CHANNEL_1, aout, ain, results_file,
csv_path)
samples_diff1, adc_sr, dac_osr, freq = channels_diff_in_samples(
trig, libm2k.ANALOG_IN_CHANNEL_2, aout, ain, results_file,
csv_path)
for i in range(len(adc_sr)):
with self.subTest(msg='ADC SR:' + str(adc_sr[i]) +
'; trig src: Ch0'):
self.assertEqual(
sum(samples_diff0[i]), 0,
'\ndiff: ' + str(samples_diff0[i]) + '\ndac_osr: ' +
str(dac_osr) + '\nfreq: ' + str(freq))
for i in range(len(adc_sr)):
with self.subTest(msg='ADC SR:' + str(adc_sr[i]) +
'; trig src: Ch1'):
self.assertEqual(
sum(samples_diff1[i]), 0,
'\ndiff: ' + str(samples_diff1[i]) + '\ndac_osr: ' +
str(dac_osr) + '\nfreq: ' + str(freq))