lightlab.equipment.abstract_drivers.electrical_sources module

Summary

Classes:

MultiChannelSource	This thing basically holds a dict state and provides some critical methods
MultiModalSource	Checks modes for sources with multiple ways to specify.

Reference

class MultiModalSource

Bases: object

Checks modes for sources with multiple ways to specify.

Also checks ranges

Default class constants come from NI PCI source array

supportedModes = {'baseunit', 'wattperohm', 'milliamp', 'volt', 'amp', 'mwperohm'}

baseUnitBounds = [0, 1]

baseToVoltCoef = 10

v2maCoef = 4

exceptOnRangeError = False

classmethod enforceRange(val, mode)

Returns clipped value. Raises RangeError

classmethod val2baseUnit(value, mode)

Converts to the voltage value that will be applied at the PCI board Depends on the current mode state of the instance

Args:

value (float or dict)

classmethod baseUnit2val(baseVal, mode)

Converts the voltage value that will be applied at the PCI board back into the units of th instance This is useful for bounds checking

Args:

baseVal (float or dict)

class MultiChannelSource(useChans=None, **kwargs)

Bases: object

This thing basically holds a dict state and provides some critical methods

There is no mode

Checks for channel compliance. Handles range exceptions

maxChannel = None

elChans

Returns the blocked out channels as a list

setChannelTuning(chanValDict)

Sets a number of channel values and updates hardware

Parameters:

• chanValDict (dict) – A dictionary specifying {channel: value}
• waitTime (float) – time in ms to wait after writing, default (None) is defined in the class

Returns:

was there a change in value

Return type:

(bool)

getChannelTuning()

The inverse of setChannelTuning

Parameters:mode (str) – units of the value in (‘mwperohm’, ‘milliamp’, ‘volt’) Returns:the full state of blocked out channels in units determined by mode argument Return type:(dict)

off(*setArgs)

Turn all voltages to zero, but maintain the session