def METHOD_NAME(self) -> tuple[ParamRawDataType, ParamRawDataType]:
    volt = self._measured_param.get()
    assert isinstance(self.instrument, SR560)
    volt_amp = volt / self.instrument.gain.get()
    if self.instrument.invert.get():
        volt_amp *= -1
    value = (volt, volt_amp)
    return value