What’s New in the SHFQA User Manual
Release 23.02
Release date: 28-Feb-2023
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In/Out
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Node: Added node
/DEV…/QACHANNELS/…/INPUT/ADCOVERRANGECOUNT, allowing to separately monitor ADC overrange conditions. -
Bugfix: Fixed a bug causing overrange conditions during the ADC calibration at startup.
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QA Setup
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Feature: Added power-spectral-density (PSD) measurement capability to the spectroscopy mode. The PSD measurement gets controlled via the node tree branch /DEV…/QACHANNELS/…/SPECTROSCOPY/PSD.
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API: Added a zhinst-toolkit example for PSD measurement in GitHub.
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API: Added a parameter "wait_after_integration" in zhinst-utils ShfSweeper class, see Table 1 in the tutorial Continuous Resonator Spectroscopy.
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API: Changed the default integration delay in zhinst-utils ShfSweeper class from 0 ns to 224 ns, see Table 1 in the tutorial Continuous Resonator Spectroscopy.
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DIO
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Feature: Added the internal trigger unit, which allows to generate a number of triggers with configurable hold-off time. The configuration is done via the nodes /DEV…/SYSTEM/INTERNALTRIGGER/… or the DIO tab in the GUI. The "Internal Trigger" can be selected as trigger source of the Scope, QA Readout Pulse Generator, and for Spectroscopy mode.
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Bugfix: Fixed a bug causing broken DIO interface when switching between LVCMOS and LVDS outputs.
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Scope: Fixed a bug causing a wrong effective scope trigger delay at startup.
Release 22.08
Release date: 31-Aug-2022
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In/Out
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LabOne GUI: Fixed a bug, where the error "The sigin ADC reported unexpected dataconverter errors!" was issued during an over range condition at the QA channel inputs.
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LabOne GUI: Added overload status display of the Input signal from the front panel and the Output signal before DAC.
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QA Setup: Added support for real-time multistate discrimination, accessible through the new node branch: /DEV…/QACHANNELS/…/READOUT/MULTISTATE/. The feature allows to discriminate the states of up to 16 qubits, 8 qutrits or 5 ququads or of any combination of these in real-time through the command startQA in the sequencer.
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QA Result: Improved the maximal repetition rate, with which the QA readout can be started without missing triggers to 1/(440 ns).
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DIO: Changed keyword arguments of node /DEV…/DIOS/0/MODE to enable control of DIO values by the sequencer from
chanNseq
orchannelN_sequencer
toqachanNseq
orqachannelN_sequencer
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Generator
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LabOne GUI: Added Waveform Viewer sub-tab to display waveforms of readout and integration weights or spectroscopy envelope.
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LabOne GUI: Removed one trigger selection
Sequencer n Trigger Out
from the Trigger sub-tab of Sequencer n. -
Node: Node /DEV…/QACHANNELS/n/GENERATOR/ELF/DATA accepts raw data as 8-, 16-, and 64-bit integer vectors in addition to 32-bit words.
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Node: Node /DEV…/QACHANNELS/n/GENERATOR/ELF/DATA accepts raw data as 8-, 16-, and 64-bit integer vectors in addition to 32-bit words.
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User Manual: Changed the LabOne API used in the Tutorial Session from Zurich Instruments Python to Zurich Instruments Toolkit.
Release 22.02
Release date: 28-Feb-2022
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In/Out: Added 2 recommendations to the user manual, warm up the instrument with inputs and outputs are both enabled for 2 hours, and do not change center frequency or input range while running the Python API ShfSweeper class.
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QA Setup:
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LabOne GUI: Fixed a bug such that readout waveforms and integration weights can always be uploaded after clearing all memory slots even when there is no change. (patch release)
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LabOne GUI: Fixed a bug such that readout waveform and integration weights are parametrically generated based on sampling rate of 2.0 GSa/s instead of 1.8 GSa/s. (patch release)
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LabOne GUI: Added CSV envelope waveform upload feature in Pulse Spectroscopy mode.
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LabOne GUI: Added new phase parameters for Parametric generation of readout and integration weight waveforms in Readout mode.
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LabOne GUI: Added waveform vectors clearing feature in Readout mode.
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Node tree: Added new node /DEV…/QACHANNELS/…/READOUT/INTEGRATION/CLEARWEIGHT to clear all uploaded integration weight vectors.
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QA Result:
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LabOne GUI and API: Changed result vector of integration unit which was not triggered to "NaN" (Not a Number).
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LabOne GUI and API: Fixed a bug such that the instrument can run continuously even result length of all channels are set to the maximum value. (patch release)
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Scope:
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LabOne GUI: Added Scope tab.
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LabOne GUI and API: Added continuous mode. Scope gets automatically re-enabled after each acquired scope shot. The node /DEV…/SCOPES/0/SINGLE is used to switch between continuous mode (0, default) and single-shot (1). In addition, if /DEV…/SCOPES/0/TRIGGER/ENABLE is set to 0 (default), the scope gets automatically re-triggered.
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LabOne API: Fixed the issue that samples were always scaled by the number of averages, even when the averaging was switched off.
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DIO: LabOne GUI: Added Trigger and Marker sub-tabs.
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Generator:
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LabOne GUI: Added User Register.
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LabOne GUI: Enabled Generator Sequencer Status display.
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SeqC: Added commands resetOscPhase(), setUserReg(), getUserReg() configFreqSweep() and setSweepStep(). to the Sequencer.
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SeqC: Enabled triggering of all individual integration units and its combination using the bit mask, for example by combining two constants "QA_INT_0 | QA_INT_1" using the bit-wise OR operator "|".
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Node tree: Added new node /DEV…/QACHANNELS/…/GENERATOR/CLEARWAVE to clear all uploaded readout waveform vectors.
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Corrected rounding of uploaded waveform samples. This will make a change of the signal output by 1 least-significant bit, corresponding to a fraction \(2^{-17}\) of the full scale amplitude.
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ShfSweeper Python class: LabOne API: Updated the ShfSweeper Python class in zhinst.utils.shf_sweeper to use the fast sequencer-based sweep by default. Users can set the use_sequencer attribute in the SweepConfig to False to return to the previous host-based approach.
Release 21.08
Release date: 27-Aug-2021
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Sweeper: Added a feature to realize pulsed spectroscopy.
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DIO: Enabled full DIO support. Added new node /DEV…/DIOS/0/MODE to select mode, and introduced the following SeqC commands: setDIO(), getDIO(), waitDIOTrigger(), and getDIOTriggered().
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Sequencer: Modified the behaviour of the startQA() SeqC command: The "trigger" argument now controls the trigger signal instead of the marker output.
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Firmware Update: Firmware can now be updated via USB.
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User Manual: Added tutorials for spectroscopy and qubit readout measurement.
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LabOne GUI: Added Readout Pulse Generator Sequencer tab.
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LabOne GUI: Added Quantum Analyzer Result Logger tab.
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LabOne API: Moved Python API examples to GitHub, https://github.com/zhinst/labone-api-examples.
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LabOne API: Added EnvelopeConfig in zhinst.utils.shf_sweeper for configuring the envelope for pulsed spectroscopy.
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LabOne API: Renamed pointwise to sequential, sweepwise to cyclic, dwell_time to integration_time and num_samples to num_averages in zhinst.utils.shf_sweeper.
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Added new nodes to select either "cyclic" or "sequential" averaging of results: /DEV…/QACHANNELS/…/READOUT/RESULT/MODE and DEV…/QACHANNELS/…/SPECTROSCOPY/RESULT/MODE.
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LabOne API: Added a new node /DEV…/SCOPES/0/SINGLE to switch between single-shot and continuous mode, only single-shot is available in this release (patch release).
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LabOne API: Added new nodes
/DEV…/QACHANNELS/n/SPECTROSCOPY/ENVELOPE/… to enable multiplication of the oscillator signal with a complex envelope for pulsed spectroscopy. -
LabOne API: Renamed /DEV…/QACHANNELS/n/READOUT/RESULT/… to /DEV…/QACHANNELS/n/SPECTROSCOPY/RESULT/….
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LabOne API: Renamed
/DEV…/RAW/QACHANNELS/n/SPECTROSCOPY/TRIGGER/CHANNEL to
/DEV…/QACHANNELS/n/SPECTROSCOPY/TRIGGER/CHANNEL. -
LabOne API: Renamed /DEV…/SYSTEM/SWTRIGGER/… to
/DEV…/SYSTEM/SWTRIGGERS/…. -
LabOne API: Removed SEQUENCER/ from /DEV…/QACHANNELS/n/GENERATOR/SEQUENCER/{AUXTRIGGERS/…, DIO/…, ELF/…, ENABLE, SINGLE, READY, RESET}.
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LabOne API: Removed the node /DEV…/QACHANNELS/…/READOUT/RESULT/RESET. Instead, a running measurement can now be stopped by writing 0 to the node /DEV…/QACHANNELS/…/READOUT/RESULT/ENABLE.