devices.keithley:Keithley2450

Class for controlling Keithley 2450 SourceMeter.

Usage

Source

devices.keithley:Keithley2450(
    interface,
    **kwargs,
)

Provides methods to configure and control the Keithley 2450 source measurement unit for various sourcing and measurement operations.

Methods

Name Description
__init__() Initialize the Keithley 2450 SourceMeter.
configure() Configure the Keithley 2450 to source current and sense voltage.
getSense() Get the current sense value from the instrument.
getSource() Get the current source value from the instrument.
setSource() Set the source value.

__init__()

Initialize the Keithley 2450 SourceMeter.

Usage

Source

__init__(
    interface,
    **kwargs,
)

Parameters

interface: str

VISA resource name for the instrument

**kwargs: dict
Additional arguments to pass to the VISA device initialization

configure()

Configure the Keithley 2450 to source current and sense voltage.

Usage

Source

configure(
    sourceMode=None,
    senseMode=None,
    fourWire=None,
    senseAutoRange=None,
    senseRange=None,
    sourceAutoRange=None,
    sourceRange=None,
    senseLimit=None,
    output=None,
    delayAuto=None,
    delay=None,
    resetUnits=True,
    reset=False,
)

Parameters

sourceMode: str = None

“VOLT” or “CURR”, physical parameter to source.

senseMode: str = None

“VOLT” or “CURR”, parameter to measure.

fourWire: bool = None

Four wire measurement; None uses the current configuration.

senseAutoRange: bool = None

Autodetect the sense range.

senseRange: float = None

Largest expected measurement value; the device picks the next inclusive range.

sourceAutoRange: bool = None

Autodetect the source range.

sourceRange: float = None

Largest expected source current; the device picks the next inclusive range.

senseLimit: float = None

Voltage limit.

output: bool = None

Turn the output on.

delayAuto: bool = None

Automatically choose the delay for stabilizing the output.

delay: float = None

Delay in seconds for stabilizing the output before doing an internal measurement. Does not affect other devices.

resetUnits: bool = True

If True, Ampere and Volt are restored as default units for current and voltage measurements. Default is True.

reset: bool = False
If True, reset the device.

Examples

>>> device.configure(sourceMode="CURR", senseMode="VOLT",
...                 fourWire=True, senseAutoRange=True,
...                 sourceRange=0.001, output=True)

Notes

The output will initially be turned off during configuration. This will configure the Keithley to be in 4W sense mode, detect the sense range automatically. The range is chosen to include 1mA and the output is turned on.

getSense()

Get the current sense value from the instrument.

Usage

Source

getSense()

Returns

float
The measured sense value

getSource()

Get the current source value from the instrument.

Usage

Source

getSource()

Returns

float
The measured source value

setSource()

Set the source value.

Usage

Source

setSource(current)

Parameters

current: float
The value to set for the source, either voltage or current depending on the source mode