"""DMM shared types: ``MeasurementFunction``, ``DMMMeasurementConfig``, ``RangeMode``."""
from dataclasses import dataclass
from enum import Enum
[docs]
class MeasurementFunction(Enum):
"""DMM measurement function (mode)."""
DC_VOLTAGE = "DC_VOLTAGE"
AC_VOLTAGE = "AC_VOLTAGE"
TWO_WIRE_RESISTANCE = "TWO_WIRE_RESISTANCE"
FOUR_WIRE_RESISTANCE = "FOUR_WIRE_RESISTANCE"
DC_CURRENT = "DC_CURRENT"
AC_CURRENT = "AC_CURRENT"
[docs]
class RangeMode(Enum):
"""DMM range mode published on ``range_mode.cmd``."""
AUTO = "AUTO"
MANUAL = "MANUAL"
[docs]
@dataclass
class DMMMeasurementConfig:
"""DMM acquisition config. Drivers apply only the options they support; the rest are ignored or raise.
Attributes:
function: Measurement function (required).
digits: Resolution in digits; ``None`` = instrument default.
aperture_seconds: Integration time in seconds (vendor-dependent; mutually exclusive with ``aperture_nplc``).
aperture_nplc: Integration time in power-line cycles (vendor-dependent).
range: Manual range in the active function's units; ``None`` = auto range.
"""
function: MeasurementFunction
digits: int | None = None
aperture_seconds: float | None = None
aperture_nplc: float | None = None
range: float | None = None
instro