def setup_AWG(self, *args):
self.arb.abort()
self.arb.delete_all_waveforms()
self.arb.reset_sequence_table()
self.arb.set_output_route("DC", channel=1)
self.arb.voltage_amplitude = 1.0
self.arb.set_marker_level_low(0.0, channel=1, marker_type="sync")
self.arb.set_marker_level_high(1.5, channel=1, marker_type="sync")
self.arb.continuous_mode = False
self.arb.gate_mode = False
def arb_pulse(amplitude, sample_rate=12e9):
pulse_points = int(self.duration.value * sample_rate)
if pulse_points < 320:
wf = np.zeros(320)
else:
wf = np.zeros(64 * int(np.ceil(pulse_points / 64.0)))
wf[:pulse_points] = amplitude
return wf
segment_ids = []
arb_voltage = arb_voltage_lookup()
for amp in self.amplitudes:
waveform = arb_pulse(np.sign(amp) * arb_voltage(abs(amp)))
wf_data = KeysightM8190A.create_binary_wf_data(waveform)
segment_id = self.arb.define_waveform(len(wf_data))
segment_ids.append(segment_id)
self.arb.upload_waveform(wf_data, segment_id)
# NIDAQ trigger waveform
nidaq_trig_wf = KeysightM8190A.create_binary_wf_data(np.zeros(3200),
sync_mkr=1)
nidaq_trig_segment_id = self.arb.define_waveform(len(nidaq_trig_wf))
self.arb.upload_waveform(nidaq_trig_wf, nidaq_trig_segment_id)
settle_pts = int(640 * np.ceil(self.settle_delay * 12e9 / 640))
start_idxs = [0]
scenario = Scenario()
seq = Sequence(sequence_loop_ct=int(self.repeats))
for si in segment_ids:
# seq = Sequence(sequence_loop_ct=int(1))
seq.add_waveform(si) # Apply switching pulse to the sample
seq.add_idle(settle_pts, 0.0) # Wait for the measurement to settle
seq.add_waveform(
nidaq_trig_segment_id) # Trigger the NIDAQ measurement
seq.add_idle(1 << 14, 0.0) # bonus non-contiguous memory delay
scenario.sequences.append(seq)
self.arb.upload_scenario(scenario, start_idx=start_idxs[-1])
start_idxs.append(start_idxs[-1] + len(scenario.scpi_strings()))
# The last entry is eroneous
start_idxs = start_idxs[:-1]
self.arb.sequence_mode = "SCENARIO"
self.arb.scenario_advance_mode = "REPEAT"
self.arb.stop()
self.arb.scenario_start_index = 0
self.arb.run()
def setup_arb(self):
self.arb.abort()
self.arb.delete_all_waveforms()
self.arb.reset_sequence_table()
reset_wf = arb_pulse(-self.polarity * self.reset_amplitude,
self.reset_duration)
wf_data = KeysightM8190A.create_binary_wf_data(reset_wf)
rst_segment_id = self.arb.define_waveform(len(wf_data))
self.arb.upload_waveform(wf_data, rst_segment_id)
no_reset_wf = arb_pulse(0.0, 3.0 / 12e9)
wf_data = KeysightM8190A.create_binary_wf_data(no_reset_wf)
no_rst_segment_id = self.arb.define_waveform(len(wf_data))
self.arb.upload_waveform(wf_data, no_rst_segment_id)
# nTron waveforms
nTron_control_voltage = pulse_voltage_lookup()
nTron_segment_ids = []
for dur, vpeak in zip(self.pulse_durations, self.pulse_voltages):
volt = self.polarity * nTron_control_voltage(vpeak)
logger.debug("Set nTron pulse: {}V -> AWG {}V, {}s".format(
vpeak, volt, dur))
ntron_wf = ntron_pulse(amplitude=volt, fall_time=dur)
wf_data = KeysightM8190A.create_binary_wf_data(ntron_wf)
ntron_segment_id = self.arb.define_waveform(len(wf_data))
self.arb.upload_waveform(wf_data, ntron_segment_id)
nTron_segment_ids.append(ntron_segment_id)
# NIDAQ trigger waveform
nidaq_trig_wf = KeysightM8190A.create_binary_wf_data(np.zeros(3200),
sync_mkr=1)
nidaq_trig_segment_id = self.arb.define_waveform(len(nidaq_trig_wf))
self.arb.upload_waveform(nidaq_trig_wf, nidaq_trig_segment_id)
settle_pts = int(640 * np.ceil(self.settle_delay * 12e9 / 640))
self.start_idxs = [0]
self.start_id = 0
for si in nTron_segment_ids:
scenario = Scenario()
seq = Sequence(sequence_loop_ct=int(self.attempts))
seq.add_waveform(rst_segment_id)
seq.add_idle(settle_pts, 0.0)
seq.add_waveform(nidaq_trig_segment_id)
seq.add_idle(1 << 16, 0.0) # bonus non-contiguous memory delay
# seq.add_waveform(pspl_trig_segment_id)
seq.add_waveform(si)
seq.add_idle(settle_pts, 0.0)
seq.add_waveform(nidaq_trig_segment_id)
seq.add_idle(1 << 16, 0.0) # bonus non-contiguous memory delay
scenario.sequences.append(seq)
self.arb.upload_scenario(scenario, start_idx=self.start_idxs[-1])
self.start_idxs.append(self.start_idxs[-1] +
len(scenario.scpi_strings()))
# The last entry is eroneous
self.start_idxs = self.start_idxs[:-1]
self.arb.sequence_mode = "SCENARIO"
self.arb.scenario_advance_mode = "SINGLE"
self.arb.scenario_start_index = 0