def setup_arb( self): #, gate_bias, gate_pulse_amplitude, gate_pulse_duration): self.arb.abort() self.arb.delete_all_waveforms() self.arb.reset_sequence_table() seg_ids_ch1 = [] seg_ids_ch2 = [] # For the measurements pulses along the channel wf = measure_pulse(amplitude=self.measure_amplitude, duration=self.measure_duration, frequency=self.measure_frequency) wf_data = KeysightM8190A.create_binary_wf_data(wf, sync_mkr=1) seg_id = self.arb.define_waveform(len(wf_data), channel=1) self.arb.upload_waveform(wf_data, seg_id, channel=1) seg_ids_ch1.append(seg_id) # Build in a delay between sequences settle_pts = 640 * np.int( np.ceil(self.repeat_time * self.sample_rate / 640)) # settle_pts2 = 640*np.ceil(8*2.4e-9 * self.sample_rate / 640) scenario = Scenario() seq = Sequence(sequence_loop_ct=self.attempts * len(self.gate_amps) * len(self.gate_durs)) for si in seg_ids_ch1: seq.add_waveform(si) seq.add_idle(settle_pts, 0.0) scenario.sequences.append(seq) self.arb.upload_scenario(scenario, start_idx=0, channel=1) for amp in self.gate_amps: for dur in self.gate_durs: # For the switching pulses along the gate wf = switching_pulse( amplitude=amp, duration=dur) #self.gate_pulse_duration.value) wf_data = KeysightM8190A.create_binary_wf_data(wf) seg_id = self.arb.define_waveform(len(wf_data), channel=2) self.arb.upload_waveform(wf_data, seg_id, channel=2) seg_ids_ch2.append(seg_id) scenario = Scenario() seq = Sequence(sequence_loop_ct=self.attempts) for si in seg_ids_ch2: seq.add_waveform(si) seq.add_idle(settle_pts, 0.0) scenario.sequences.append(seq) self.arb.upload_scenario(scenario, start_idx=0, channel=2) self.arb.set_sequence_mode("SCENARIO", channel=1) self.arb.set_scenario_advance_mode("SINGLE", channel=1) self.arb.set_scenario_start_index(0, channel=1) self.arb.set_sequence_mode("SCENARIO", channel=2) self.arb.set_scenario_advance_mode("SINGLE", channel=2) self.arb.set_scenario_start_index(0, channel=2) self.arb.initiate(channel=1) self.arb.initiate(channel=2) self.arb.advance()
def setup_arb(self,volt): def arb_pulse(amplitude, duration, sample_rate=12e9): arb_voltage = arb_voltage_lookup() pulse_points = int(duration*sample_rate) if pulse_points < 320: wf = np.zeros(320) else: wf = np.zeros(64*np.ceil(pulse_points/64.0)) wf[:pulse_points] = np.sign(amplitude)*arb_voltage(abs(amplitude)) return wf self.arb.abort() self.arb.delete_all_waveforms() self.arb.reset_sequence_table() # Reset waveform 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) # Switching waveform switch_wf = arb_pulse(self.polarity*volt, self.pulse_duration.value) wf_data = KeysightM8190A.create_binary_wf_data(switch_wf) sw_segment_id = self.arb.define_waveform(len(wf_data)) self.arb.upload_waveform(wf_data, sw_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)) scenario = Scenario() seq = Sequence(sequence_loop_ct=int(self.attempts)) #First try with reset flipping pulse 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(sw_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 scenario.sequences.append(seq) self.arb.upload_scenario(scenario, start_idx=0) self.arb.sequence_mode = "SCENARIO" self.arb.scenario_advance_mode = "REPEAT" self.arb.scenario_start_index = 0 self.arb.run()
def setup_daq(self): self.arb.abort() self.arb.delete_all_waveforms() self.arb.reset_sequence_table() # Picosecond trigger waveform pspl_trig_wf = KeysightM8190A.create_binary_wf_data(np.zeros(3200), samp_mkr=1) pspl_trig_segment_id = self.arb.define_waveform(len(pspl_trig_wf)) self.arb.upload_waveform(pspl_trig_wf, pspl_trig_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)) scenario = Scenario() seq = Sequence(sequence_loop_ct=int(self.attempts)) seq.add_waveform(pspl_trig_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 scenario.sequences.append(seq) self.arb.upload_scenario(scenario, start_idx=0) self.arb.sequence_mode = "SCENARIO" self.arb.scenario_advance_mode = "REPEAT" self.arb.scenario_start_index = 0 self.arb.run() # =================== # Setup the NIDAQ # =================== self.analog_input = Task() self.read = int32() self.buf_points = self.samps_per_trig * self.attempts self.analog_input.CreateAIVoltageChan("Dev1/ai1", "", DAQmx_Val_Diff, self.min_daq_voltage, self.max_daq_voltage, DAQmx_Val_Volts, None) self.analog_input.CfgSampClkTiming("", 1e6, DAQmx_Val_Rising, DAQmx_Val_FiniteSamps, self.samps_per_trig) self.analog_input.CfgInputBuffer(self.buf_points) self.analog_input.CfgDigEdgeStartTrig("/Dev1/PFI0", DAQmx_Val_Rising) self.analog_input.SetStartTrigRetriggerable(1) self.analog_input.StartTask()
def init_instruments(self): self.lock.tc = self.tc # Setup the Keithley # self.keith.triad() # self.keith.conf_meas_res(res_range=1e5) # self.keith.conf_src_curr(comp_voltage=0.5, curr_range=1.0e-5) # self.keith.current = self.measure_current self.mag.ramp() # Setup the AWG self.arb.set_output(True, channel=1) self.arb.set_output(False, channel=2) self.arb.sample_freq = 12.0e9 self.arb.waveform_output_mode = "WSPEED" 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, duration, sample_rate=12e9): arb_voltage = arb_voltage_lookup() pulse_points = int(duration * sample_rate) if pulse_points < 320: wf = np.zeros(320) else: wf = np.zeros(64 * np.ceil(pulse_points / 64.0)) wf[:pulse_points] = np.sign(amplitude) * arb_voltage( abs(amplitude)) return wf reset_wf = arb_pulse( -self.polarity * self.reset_amplitude * np.power(10.0, self.circuit_attenuation / 20.0), 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) # Picosecond trigger waveform pspl_trig_wf = KeysightM8190A.create_binary_wf_data(np.zeros(3200), samp_mkr=1) pspl_trig_segment_id = self.arb.define_waveform(len(pspl_trig_wf)) self.arb.upload_waveform(pspl_trig_wf, pspl_trig_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)) scenario = Scenario() seq = Sequence(sequence_loop_ct=int(self.attempts)) #First try with reset flipping pulse 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_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=0) self.arb.sequence_mode = "SCENARIO" self.arb.scenario_advance_mode = "REPEAT" self.arb.scenario_start_index = 0 self.arb.run() # Setup the NIDAQ self.analog_input = Task() self.read = int32() self.buf_points = 2 * self.samps_per_trig * self.attempts self.analog_input.CreateAIVoltageChan("Dev1/ai0", "", DAQmx_Val_Diff, self.min_daq_voltage, self.max_daq_voltage, DAQmx_Val_Volts, None) self.analog_input.CfgSampClkTiming("", 1e6, DAQmx_Val_Rising, DAQmx_Val_FiniteSamps, self.samps_per_trig) self.analog_input.CfgInputBuffer(self.buf_points) self.analog_input.CfgDigEdgeStartTrig("/Dev1/PFI0", DAQmx_Val_Rising) self.analog_input.SetStartTrigRetriggerable(1) self.analog_input.StartTask() # Setup the PSPL self.pspl.amplitude = self.polarity * 7.5 * np.power( 10, (-self.pspl_atten) / 20.0) self.pspl.trigger_source = "EXT" self.pspl.trigger_level = 0.1 self.pspl.output = True def set_voltage(voltage): # Calculate the voltage controller attenuator setting vc_atten = abs(20.0 * np.log10(abs(voltage) / 7.5) ) - self.pspl_atten - self.circuit_attenuation if vc_atten <= 6.0: raise ValueError( "Voltage controlled attenuation under range (6dB).") self.atten.set_attenuation(vc_atten) time.sleep(0.02) # Assign methods self.field.assign_method(self.mag.set_field) self.pulse_duration.assign_method(self.pspl.set_duration) self.pulse_voltage.assign_method(set_voltage) # Create hooks for relevant delays self.pulse_duration.add_post_push_hook(lambda: time.sleep(0.1))
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_daq(self, attempt): def arb_pulse(amplitude, duration, sample_rate=12e9): arb_voltage = arb_voltage_lookup() pulse_points = int(duration * sample_rate) if pulse_points < 320: wf = np.zeros(320) else: wf = np.zeros(64 * np.ceil(pulse_points / 64.0)) wf[:pulse_points] = np.sign(amplitude) * arb_voltage( abs(amplitude)) return wf 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) # Picosecond trigger waveform pspl_trig_wf = KeysightM8190A.create_binary_wf_data(np.zeros(3200), samp_mkr=1) pspl_trig_segment_id = self.arb.define_waveform(len(pspl_trig_wf)) self.arb.upload_waveform(pspl_trig_wf, pspl_trig_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)) scenario = Scenario() seq = Sequence(sequence_loop_ct=int(attempt)) #First try with reset flipping pulse 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_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=0) self.arb.sequence_mode = "SCENARIO" self.arb.scenario_advance_mode = "REPEAT" self.arb.scenario_start_index = 0 self.arb.run() # =================== # Setup the NIDAQ # =================== self.analog_input = Task() self.read = int32() self.buf_points = 2 * self.samps_per_trig * attempt self.analog_input.CreateAIVoltageChan("Dev1/ai1", "", DAQmx_Val_Diff, self.min_daq_voltage, self.max_daq_voltage, DAQmx_Val_Volts, None) self.analog_input.CfgSampClkTiming("", 1e6, DAQmx_Val_Rising, DAQmx_Val_FiniteSamps, self.samps_per_trig) self.analog_input.CfgInputBuffer(self.buf_points) self.analog_input.CfgDigEdgeStartTrig("/Dev1/PFI0", DAQmx_Val_Rising) self.analog_input.SetStartTrigRetriggerable(1) self.analog_input.StartTask()
def setup_arb(self, vpeak): 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 volt = self.polarity * self.nTron_control_voltage(vpeak) logger.debug("Set nTron pulse: {}V -> AWG {}V, {}s".format( vpeak, volt, self.nTron_duration.value)) ntron_wf = ntron_pulse(amplitude=volt, fall_time=self.nTron_duration.value) 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) # 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)) scenario = Scenario() seq = Sequence(sequence_loop_ct=int(self.attempts.value)) 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(ntron_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 scenario.sequences.append(seq) self.arb.upload_scenario(scenario, start_idx=0) self.arb.sequence_mode = "SCENARIO" self.arb.scenario_advance_mode = "REPEAT" self.arb.scenario_start_index = 0 self.arb.run() # =================== # Setup the NIDAQ # =================== self.analog_input = Task() self.read = int32() self.buf_points = 2 * self.samps_per_trig * self.attempts.value self.analog_input.CreateAIVoltageChan("Dev1/ai1", "", DAQmx_Val_Diff, self.min_daq_voltage, self.max_daq_voltage, DAQmx_Val_Volts, None) self.analog_input.CfgSampClkTiming("", 1e6, DAQmx_Val_Rising, DAQmx_Val_FiniteSamps, self.samps_per_trig) self.analog_input.CfgInputBuffer(self.buf_points) self.analog_input.CfgDigEdgeStartTrig("/Dev1/PFI0", DAQmx_Val_Rising) self.analog_input.SetStartTrigRetriggerable(1) self.analog_input.StartTask()
arb.set_marker_level_low(0.0, channel=1, marker_type="sync") arb.set_marker_level_high(1.5, channel=1, marker_type="sync") arb.abort() arb.delete_all_waveforms() arb.reset_sequence_table() # psuedoRandom waveforms seg_ids_ch1 = [] seg_ids_ch2 = [] durations = 100e-9 * np.ones(1) amplitudes = 0.01 * np.ones(1) #0.5*np.random.random(1 << 8) for dur, amp in zip(durations, amplitudes): wf = measure_pulse(amplitude=0.04, duration=150e-9, frequency=100e6) wf_data = KeysightM8190A.create_binary_wf_data(wf, sync_mkr=1) seg_id = arb.define_waveform(len(wf_data), channel=1) arb.upload_waveform(wf_data, seg_id, channel=1) seg_ids_ch1.append(seg_id) wf = switching_pulse(amplitude=0.8, duration=40e-9) wf_data = KeysightM8190A.create_binary_wf_data(wf) seg_id = arb.define_waveform(len(wf_data), channel=2) arb.upload_waveform(wf_data, seg_id, channel=2) seg_ids_ch2.append(seg_id) settle_pts = int(640 * np.ceil(2e-6 * 12e9 / 640)) trig_wf = KeysightM8190A.create_binary_wf_data(np.zeros(3200), sync_mkr=1) trig_segment_id = arb.define_waveform(len(trig_wf), channel=2) arb.upload_waveform(trig_wf, trig_segment_id, channel=2)
def init_instruments(self): # =================== # Setup the Lockin # =================== self.lock.tc = self.tc self.lock.filter_slope = self.fdB self.lock.amp = self.res_reference * self.measure_current sense_vals = np.array(self.lock.SENSITIVITY_VALUES) self.lock.sensitivity = sense_vals[np.argmin( np.absolute(sense_vals - 2 * self.sample_resistance * self.measure_current * np.ones(sense_vals.size)))] time.sleep(20 * self.lock.measure_delay()) # Rescale lockin analogue output for NIDAQ self.lock.r_offset_enable = True #self.lock.r_expand = 10 #self.lock.r_offset = 100 * ((self.sample_resistance*self.measure_current/self.lock.sensitivity) - (0.5/self.lock.r_expand)) self.lock.r_expand = 100 self.lock.auto_offset("R") self.lock.r_offset = 0.995 * self.lock.r_offset time.sleep(20 * self.lock.measure_delay()) self.mag.ramp() self.atten.set_supply_method(self.lock.set_ao2) self.atten.set_control_method(self.lock.set_ao3) # Setup the AWG self.arb.set_output(True, channel=1) self.arb.set_output(False, channel=2) self.arb.sample_freq = 12.0e9 self.arb.waveform_output_mode = "WSPEED" 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, duration, sample_rate=12e9): arb_voltage = arb_voltage_lookup() pulse_points = int(duration * sample_rate) if pulse_points < 320: wf = np.zeros(320) else: wf = np.zeros(64 * np.ceil(pulse_points / 64.0)) wf[:pulse_points] = np.sign(amplitude) * arb_voltage( abs(amplitude)) return wf reset_wf = arb_pulse( -self.polarity * abs(self.reset_amplitude) * np.power(10.0, self.circuit_attenuation / 20.0), 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) # Picosecond trigger waveform pspl_trig_wf = KeysightM8190A.create_binary_wf_data(np.zeros(3200), samp_mkr=1) pspl_trig_segment_id = self.arb.define_waveform(len(pspl_trig_wf)) self.arb.upload_waveform(pspl_trig_wf, pspl_trig_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.lock.measure_delay() * 12e9 / 640)) scenario = Scenario() seq = Sequence(sequence_loop_ct=int(self.attempts)) #First try with reset flipping pulse 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_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=0) self.arb.sequence_mode = "SCENARIO" self.arb.scenario_advance_mode = "REPEAT" self.arb.scenario_start_index = 0 self.arb.run() # Setup the NIDAQ self.analog_input = Task() self.read = int32() self.buf_points = 2 * self.samps_per_trig * self.attempts self.analog_input.CreateAIVoltageChan("Dev1/ai0", "", DAQmx_Val_Diff, self.min_daq_voltage, self.max_daq_voltage, DAQmx_Val_Volts, None) self.analog_input.CfgSampClkTiming("", 1e6, DAQmx_Val_Rising, DAQmx_Val_FiniteSamps, self.samps_per_trig) self.analog_input.CfgInputBuffer(self.buf_points) self.analog_input.CfgDigEdgeStartTrig("/Dev1/PFI0", DAQmx_Val_Rising) self.analog_input.SetStartTrigRetriggerable(1) self.analog_input.StartTask() # Setup the PSPL self.pspl.amplitude = self.polarity * 7.5 * np.power( 10, (-self.pspl_base_attenuation) / 20.0) self.pspl.trigger_source = "EXT" self.pspl.trigger_level = 0.1 self.pspl.output = True def set_voltage(voltage): # Calculate the voltage controller attenuator setting self.pspl.amplitude = self.polarity * 7.5 * np.power( 10, -self.pspl_base_attenuation / 20.0) vc_atten = abs( 20.0 * np.log10(abs(voltage) / 7.5) ) - self.pspl_base_attenuation - self.circuit_attenuation if vc_atten <= self.atten.minimum_atten(): logger.error( "Voltage controlled attenuation {} under range.".format( vc_atten)) raise ValueError( "Voltage controlled attenuation {} under range.".format( vc_atten)) if self.atten.maximum_atten() < vc_atten: logger.error( "Voltage controlled attenuation {} over range.".format( vc_atten)) raise ValueError( "Voltage controlled attenuation {} over range.".format( vc_atten)) self.atten.set_attenuation(vc_atten) time.sleep(0.02) # Assign methods self.field.assign_method(self.mag.set_field) self.pulse_duration.assign_method(self.pspl.set_duration) self.pulse_voltage.assign_method(set_voltage) # Create hooks for relevant delays self.pulse_duration.add_post_push_hook(lambda: time.sleep(0.1))
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