DC Sweep

This page contains definitions for schemas used for configuring DC Sweep measurements.

Configuration of a DC Sweep

type	object
properties
record_settings	type	object
	properties
	meas_name	name of the datarecord when saved.
		type	string
	maxlen	maximum length of the datarecord in memory
		type	integer
	minlen	minimum length of the datarecord in memory
		type	integer
	additionalProperties	False
nvm_names	Array of names for each nano-voltmeter instrument
	type	array / string
	items	type	string
addresses	Key-value pairs of GPIB addresses corresponding to each instrument’s name. There is an expected instrument named SMU.
	type	object
	additionalProperties	Addresses of the nanovoltmeters.
		type	string
models	Key-value pairs of model names corresponding to each instrument’s name. Their is an expected instrument named SMU.
	type	object
	properties
	SMU	Model name of the SMU.
		type	string
		enum	K2450
	additionalProperties	additional model-names corresponding to the nvm_names.
		type	string
		enum	HP34420A
serials	KeyValue pairs of serial numbers corresponding to each instrument.
	type	object
	additionalProperties	type	string
monitor_thermopile	Activates monitoring of thermopiles. Usually on.
	type	boolean
fast_settings	Describe the behaviour of the SMU during the fast period immediatley before and after a step-change in the source value.
	allOf	DCSweepModeSettings
		type	object
		properties
		initial_level_duration	how long to measure immediatley before a step change in the source value on fast mode.
			type	number
			minimum	1
slow_settings	Describe the behaviour of the SMU during the slow period following a step-change in the source value.
	additionalProperties	False
	DCSweepModeSettings
initial_setup	describes the initial setup configuration of the SMU.
	type	object
	properties
	SMU	type	object
		properties
		wiring	describes 2 or 4 wire configuration of the SMU. Only 4W supported.
			type	string
			enum	4W
		source_measure	Source volts (V) measure current (A) OR Source current (A) measure volts (V). Units of source/measure settings correspond to this setting.
			type	string
			enum	SVMI, SIMV
		panel	Use front or rear panels for the measurement.
			type	string
			enum	front, rear
		additionalProperties	False
setup	describes additional setup of the SMU and Nanovoltmeter.
	type	object
	properties
	SMU	describes additional setup of the SMU specifically.
		type	object
		properties
		measure_for_duration_or_count	Requried to be duration.
			type	string
			enum	duration
		source_range	Sets range for the source values (voltage or amps depending on the source_measure setting).
			type	number
		source_ilimit	Sets the hardware current (A) limiter on the source source.
			type	number
		measure_range	Sets the measure range (V or A depending on the source_measure setting)
			type	number
		over_voltage_protection	Sets the maxmimum voltage limit on the source. Will round to nearest acceptable value based on the instrument (see model manual for details). (V or A depending on the source_measure setting)
			type	number
		source_readback	Reads back the measured value of the source rather then the programmed value. Leave as true for accurate measurements.
			type	boolean
		buffer_size	How large to make the internal memory buffer of the SMU. Leave as large (i.e. > 1e5)
			type	number
		buffer_fill_mode	How to handle the SMUs memory buffer. Fill_once will throw an error if it fails, circular will make a circular array.
			type	string
			enum	circular, fill_once
		additionalProperties	False
	additionalProperties	Additional voltmeter settings under a key corresponding to the nvm_names array.
		HP34420A Voltmeter
additionalProperties	False

DCSweepModeSettings

Describes the behaviour of the SMU for the fast/slow periods of a step.

type	object
properties
duration_per_level	how long to measure during the measure mode
	type	number
nplc	number of power line cycles to measure for.
	type	number
measure_autozero	Turns auto-zeroing on for each individual measurement.
	type	boolean
source_delay	anyOf	type	string
		enum	auto
		type	number
		minimum	0