Base Instrument

class zhinst.qcodes.base.ZIBaseInstrument(name: str, device_type: str, serial: str, interface: str = '1gbe', host: str = 'localhost', port: int = 8004, api: int = 6, **kwargs)

Bases: qcodes.instrument.base.Instrument

Base class for all Zurich Instruments QCoDeS drivers.

Implements basic wrapper around zhinst-toolkit deice drivers and translates the nodetree to a hirarchy of QCoDeS submodules (ZINodes) and parameters.

Parameters
  • name (str) – The QCoDeS name of the instrument

  • device_type (str) – The device type, e.g. ‘mfli’.

  • serial (str) – The device serial number.

Keyword Arguments
  • interface (str) – The interface used to connect to the device (default: ‘1GbE’).

  • host (str) – Address of the data server. (default: ‘localhost’)

  • port (int) – Port used to connect to the data server. (default: 8004)

  • api (int) – Api level used. (default: 6)

get_idn() → Dict

Parse a standard VISA *IDN? response into an ID dict.

Even though this is the VISA standard, it applies to various other types as well, such as IPInstruments, so it is included here in the Instrument base class.

Override this if your instrument does not support *IDN? or returns a nonstandard IDN string. This string is supposed to be a comma-separated list of vendor, model, serial, and firmware, but semicolon and colon are also common separators so we accept them here as well.

Returns

A dict containing vendor, model, serial, and firmware.

ZINode

class zhinst.qcodes.base.ZINode(parent: qcodes.instrument.base.InstrumentBase, name: str, **kwargs: Any)

Implements a node in the instrument nodetree as a InstrumentChannel.

ZINode class collects submodules (which may again be ZINodes) and parameters to represent the hirarchy of the Zurich Instruments node tree in QCoDeS. It inherits from InstrumentChannel and overrides the snapshot method.

print_readable_snapshot(update: bool = False, max_chars: int = 80) → None

Prints a readable version of the snapshot. The readable snapshot includes the name, value and unit of each parameter. A convenience function to quickly get an overview of the status of an instrument.

Parameters
  • update – If True, update the state by querying the instrument. If False, just use the latest values in memory. This argument gets passed to the snapshot function.

  • max_chars – the maximum number of characters per line. The readable snapshot will be cropped if this value is exceeded. Defaults to 80 to be consistent with default terminal width.