Source code for qcodes.instrument_drivers.basel.BaselSP983a

from typing import Any, Dict, Optional

import numpy as np

from qcodes import validators as vals
from qcodes.instrument import VisaInstrument
from qcodes.parameters import DelegateParameter, Parameter

[docs]class BaselSP983a(VisaInstrument): """ A driver for Basel Preamp's (SP983a) Remote Instrument - Model SP983a. Args: name: name for your instrument driver instance address: address of the connected remote controller of basel preamp input_offset_voltage: (Optional) A source input offset voltage parameter. The range for input is -10 to 10 Volts and it is user's responsibility to ensure this. This source parameter is used to set offset voltage parameter of the preamp and the source parameter should represent a voltage source that is connected to the "Offset Input Volgate" connector of the SP983C. """ def __init__( self, name: str, address: str, input_offset_voltage: Optional[Parameter] = None, terminator: str = "\r\n", **kwargs: Any, ) -> None: super().__init__(name, address, terminator=terminator, **kwargs) self.connect_message() self.add_parameter( "gain", label="Gain", unit="V/A", set_cmd=self._set_gain, get_cmd=self._get_gain, vals=vals.Enum(1e5, 1e6, 1e7, 1e8, 1e9), ) self.add_parameter( "fcut", unit="Hz", label="Filter Cut-Off Frequency", get_cmd=self._get_filter, get_parser=self._parse_filter_value, set_cmd=self._set_filter, val_mapping={ 30: "30", 100: "100", 300: "300", 1000: "1k", 3000: "3k", 10e3: "10k", 30e3: "30k", 100e3: "100k", 1e6: "FULL", }, ) self.add_parameter( "overload_status", label="Overload Status", set_cmd=False, get_cmd="GET O" ) self.add_parameter( "offset_voltage", label="Offset Voltage for SP983C", unit="V", vals=vals.Numbers(-0.1, 0.1), scale=100, source=input_offset_voltage, parameter_class=DelegateParameter, )
[docs] def get_idn(self) -> Dict[str, Optional[str]]: vendor = "Physics Basel" model = "SP 983A" serial = None firmware = None return { "vendor": vendor, "model": model, "serial": serial, "firmware": firmware, }
def _set_gain(self, value: float) -> None: r = self.ask(f"SET G 1E{int(np.log10(value))}") if r != "OK": raise ValueError(f"Expected OK return but got: {r}") def _get_gain(self) -> float: s = self.ask("GET G") r = s.split("Gain: ")[1] return float(r) def _set_filter(self, value: str) -> None: r = self.ask(f"SET F {value}") if r != "OK": raise ValueError(f"Expected OK return but got: {r}") def _get_filter(self) -> str: s = self.ask("GET F") return s.split("Filter: ")[1] @staticmethod def _parse_filter_value(val: str) -> str: if val.startswith("F"): return "FULL" elif val[-3::] == "kHz": return str(int(val[0:-3])) + "k" elif val[-2::] == "Hz": return str(int(val[0:-2])) else: raise ValueError(f"Could not interpret result. Got: {val}")