Source code for qcodes_contrib_drivers.drivers.Gentec.Gentec_Maestro

from qcodes.instrument import VisaInstrument
from qcodes.parameters import create_on_off_val_mapping




class Gentec_Maestro(VisaInstrument):
    r"""
    Instrument driver for the Gentec Maestro powermeter.
    Args:
        name (str): Instrument name.
        address (str): ASRL address
        baud_rate (int): Baud rate for the connection.
    Attributes:
        model (str): Model identification.
        firmware_version (str): Firmware version.
    """

    def __init__(self, name, address, baud_rate=115200, **kwargs):

        super().__init__(name, address, **kwargs)

        # set baud rate
        self.visa_handle.baud_rate = baud_rate

        # get instrument information
        self.model, _, self.firmware_version = self._query_versions()

        # add parameters
        self.add_parameter('power',
                           get_cmd='*CVU',
                           get_parser=float,
                           label='Power',
                           unit='W')

        def wavelength_get_parser(ans):
            return int(ans[4:])
        self.add_parameter('wavelength',
                           get_cmd='*GWL',
                           set_cmd='*PWC{0:0>5}',
                           get_parser=wavelength_get_parser,
                           label='Wavelength',
                           unit='nm')

        def zero_offset_get_parser(ans):
            return int(ans[5:])
        self.add_parameter('zero_offset_enabled',
                           get_cmd='*GZO',
                           get_parser=zero_offset_get_parser,
                           val_mapping=create_on_off_val_mapping(on_val=1, off_val=0),
                           label='Zero offset enabled')

        # print connect message
        self.connect_message()

    # get methods


    def get_idn(self):
        return {'vendor': 'Gentec', 'model': self.model, 'firmware': self.firmware_version}


    # further methods


    def clear_zero_offset(self):
        self.write('*COU')




    def set_zero_offset(self):
        self.write('*SOU')


    def _query_versions(self):
        return self.ask('*VER').split()