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QCoDeS 0.15.0 - June 2020 first alpha release

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@jenshnielsen jenshnielsen released this 08 Jun 14:08
v0.15.0a1
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Changelog for QCoDeS 0.15.0a1

The June 2020 alpha release of QCoDeS

Breaking Changes:

  • GroupParameter.group, Group.parameters and Group.instrument are
    now all read only properties (#2031).
  • The public attributes Group.get_cmd and Group.get_cmd have
    been removed (#2031).
  • It is now an error to supply get/set_cmd, if get/set_raw is not abstract
    (#2015).

New drivers:

  • Add Zurich Instruments drivers. The old ZIUHFLI driver is deprecated. The
    actual implementation is in
    zhinst-qcodes <https://github.com/zhinst/zhinst-qcodes/>_
    as described in
    this blog <https://blogs.zhinst .com/andrea/2020/05/24/control-your-measurements-with-qcodes-and-labber/>_
    (#2025).

Improved drivers:

  • New features are added to Keysight B1517A driver to allow IV
    staircase sweep measurements (#2028).
  • Various improvements are done on B1520A driver, such as, parsing correctly
    the wrong output floats ('-0.-1') from the instrument until new firmware
    release (#2023), improved testing (#2027), fixing spot measurement of
    capacitance checking for wrong impedance model, and working with
    ac_dc_volt_monitor=True (#2020).
  • Now on_off_val_mapping is used instead of a custom parser in Agilent
    E8527D (#2030).
  • The parameter limits are added for the R&S ZNB-40 VNA R&S (#2029).

Improved:

  • The DelegateParameter is now allowed to change source and also support a
    None source (#2005).
  • The GroupParameter now correctly update their cache when a single
    parameter in the group has been set or captured (#2031).
  • The GroupParameter now correctly implements mappings between
    value and raw_value e.g. scale and offset (#2031).
  • Snapshot_base introduce new update=None, and use cache in parameter's
    snapshot_base (#1833).
  • Now initial cache value can be set to the Parameter using kwarg
    initial_cache_val (#1840).
  • The snapshots of stations and instruments can also be diffed now using
    diff_param_values (#2021).

Under the hood:

  • New lines are now handled correctly on windows (#2026).
  • In the Parameter class, the gettable/settable have become read only
    property (#2024).
  • Parameter cache.get is refactored to make the logic a bit more clear. Its
    functionality remains the same (#2008).
  • The loop data location in channels test is changed for pytest-xdist to work
    (#2010).
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