Agilent B1500 Semiconductor Parameter Analyzer 

Contents

Agilent B1500 Semiconductor Parameter Analyzer

General Information 

This instrument driver does not support all configuration options of the B1500 mainframe yet. So far, it is possible to interface multiple SMU modules and source/measure currents and voltages, perform sampling and staircase sweep measurements. The implementation of further measurement functionalities is highly encouraged. Meanwhile the model is managed by Keysight, see the corresponding “Programming Guide” for details on the control methods and their parameters

Command Translation 

Alphabetical list of implemented B1500 commands and their corresponding method/attribute names in this instrument driver.

Command	Property/Method
`AAD`	`SMU.adc_type()`
`AB`	`abort()`
`AIT`	`adc_setup()`
`AV`	`adc_averaging()`
`AZ`	`adc_auto_zero`
`BC`	`clear_buffer()`
`CL`	`SMU.disable()`
`CM`	`auto_calibration`
`CMM`	`SMU.meas_op_mode()`
`CN`	`SMU.enable()`
`DI`	`SMU.force()` mode: `'CURRENT'`
`DV`	`SMU.force()` mode: `'VOLTAGE'`
`DZ`	`force_gnd()`, `SMU.force_gnd()`
`ERRX?`	`check_errors()`
`FL`	`SMU.filter`
`FMT`	`data_format()`
`*IDN?`	`id()`
`*LRN?`	`query_learn()`, multiple methods to read/format settings directly
`MI`	`SMU.sampling_source()` mode: `'CURRENT'`
`ML`	`sampling_mode`
`MM`	`meas_mode()`
`MSC`	`sampling_auto_abort()`
`MT`	`sampling_timing()`
`MV`	`SMU.sampling_source()` mode: `'VOLTAGE'`
`*OPC?`	`check_idle()`
`PA`	`pause()`
`PAD`	`parallel_meas`
`RI`	`meas_range_current`
`RM`	`SMU.meas_range_current_auto()`
`*RST`	`reset()`
`RV`	`meas_range_voltage`
`SSR`	`series_resistor`
`TSC`	`time_stamp`
`TSR`	`clear_timer()`
`UNT?`	`query_modules()`
`WAT`	`wait_time()`
`WI`	`SMU.staircase_sweep_source()` mode: `'CURRENT'`
`WM`	`sweep_auto_abort()`
`WSI`	`SMU.synchronous_sweep_source()` mode: `'CURRENT'`
`WSV`	`SMU.synchronous_sweep_source()` mode: `'VOLTAGE'`
`WT`	`sweep_timing()`
`WV`	`SMU.staircase_sweep_source()` mode: `'VOLTAGE'`
`XE`	`send_trigger()`

Examples 

Initialization of the Instrument 

from pymeasure.instruments.agilent import AgilentB1500

# explicitly define r/w terminations; set sufficiently large timeout in milliseconds or None.
b1500=AgilentB1500("GPIB0::17::INSTR", read_termination='\r\n', write_termination='\r\n', timeout=600000)
# query SMU config from instrument and initialize all SMU instances
b1500.initialize_all_smus()
# set data output format (required!)
b1500.data_format(21, mode=1) #call after SMUs are initialized to get names for the channels

IV measurement with 4 SMUs 

# choose measurement mode
b1500.meas_mode('STAIRCASE_SWEEP', *b1500.smu_references) #order in smu_references determines order of measurement

# settings for individual SMUs
for smu in b1500.smu_references:
    smu.enable() #enable SMU
    smu.adc_type = 'HRADC' #set ADC to high-resoultion ADC
    smu.meas_range_current = '1 nA'
    smu.meas_op_mode = 'COMPLIANCE_SIDE' # other choices: Current, Voltage, FORCE_SIDE, COMPLIANCE_AND_FORCE_SIDE

# General Instrument Settings
# b1500.adc_averaging = 1
# b1500.adc_auto_zero = True
b1500.adc_setup('HRADC','AUTO',6)
#b1500.adc_setup('HRADC','PLC',1)

#Sweep Settings
b1500.sweep_timing(0,5,step_delay=0.1) #hold,delay
b1500.sweep_auto_abort(False,post='STOP') #disable auto abort, set post measurement output condition to stop value of sweep
# Sweep Source
nop = 11
b1500.smu1.staircase_sweep_source('VOLTAGE','LINEAR_DOUBLE','Auto Ranging',0,1,nop,0.001) #type, mode, range, start, stop, steps, compliance
# Synchronous Sweep Source
b1500.smu2.synchronous_sweep_source('VOLTAGE','Auto Ranging',0,1,0.001) #type, range, start, stop, comp
# Constant Output (could also be done using synchronous sweep source with start=stop, but then the output is not ramped up)
b1500.smu3.ramp_source('VOLTAGE','Auto Ranging',-1,stepsize=0.1,pause=20e-3) #output starts immediately! (compared to sweeps)
b1500.smu4.ramp_source('VOLTAGE','Auto Ranging',0,stepsize=0.1,pause=20e-3)

#Start Measurement
b1500.check_errors()
b1500.clear_buffer()
b1500.clear_timer()
b1500.send_trigger()

# read measurement data all at once
b1500.check_idle() #wait until measurement is finished
data = b1500.read_data(2*nop) #Factor 2 because of double sweep

#alternatively: read measurement data live
meas = []
for i in range(nop*2):
    read_data = b1500.read_channels(4+1) # 4 measurement channels, 1 sweep source (returned due to mode=1 of data_format)
    # process live data for plotting etc.
    # data format for every channel (status code, channel name e.g. 'SMU1', data name e.g 'Current Measurement (A)', value)
    meas.append(read_data)

#sweep constant sources back to 0V
b1500.smu3.ramp_source('VOLTAGE','Auto Ranging',0,stepsize=0.1,pause=20e-3)
b1500.smu4.ramp_source('VOLTAGE','Auto Ranging',0,stepsize=0.1,pause=20e-3)

Sampling measurement with 4 SMUs 

# choose measurement mode
b1500.meas_mode('SAMPLING', *b1500.smu_references) #order in smu_references determines order of measurement
number_of_channels = len(b1500.smu_references)

# settings for individual SMUs
for smu in b1500.smu_references:
    smu.enable() #enable SMU
    smu.adc_type = 'HSADC' #set ADC to high-speed ADC
    smu.meas_range_current = '1 nA'
    smu.meas_op_mode = 'COMPLIANCE_SIDE' # other choices: Current, Voltage, FORCE_SIDE, COMPLIANCE_AND_FORCE_SIDE

b1500.sampling_mode = 'LINEAR'
# b1500.adc_averaging = 1
# b1500.adc_auto_zero = True
b1500.adc_setup('HSADC','AUTO',1)
#b1500.adc_setup('HSADC','PLC',1)
nop=11
b1500.sampling_timing(2,0.005,nop) #MT: bias hold time, sampling interval, number of points
b1500.sampling_auto_abort(False,post='BIAS') #MSC: BASE/BIAS
b1500.time_stamp = True

# Sources
b1500.smu1.sampling_source('VOLTAGE','Auto Ranging',0,1,0.001) #MV/MI: type, range, base, bias, compliance
b1500.smu2.sampling_source('VOLTAGE','Auto Ranging',0,1,0.001)
b1500.smu3.ramp_source('VOLTAGE','Auto Ranging',-1,stepsize=0.1,pause=20e-3) #output starts immediately! (compared to sweeps)
b1500.smu4.ramp_source('VOLTAGE','Auto Ranging',-1,stepsize=0.1,pause=20e-3)

#Start Measurement
b1500.check_errors()
b1500.clear_buffer()
b1500.clear_timer()
b1500.send_trigger()

meas=[]
for i in range(nop):
    read_data = b1500.read_channels(1+2*number_of_channels) #Sampling Index + (time stamp + measurement value) * number of channels
    # process live data for plotting etc.
    # data format for every channel (status code, channel name e.g. 'SMU1', data name e.g 'Current Measurement (A)', value)
    meas.append(read_data)

#sweep constant sources back to 0V
b1500.smu3.ramp_source('VOLTAGE','Auto Ranging',0,stepsize=0.1,pause=20e-3)
b1500.smu4.ramp_source('VOLTAGE','Auto Ranging',0,stepsize=0.1,pause=20e-3)

Main Classes 

Classes to communicate with the instrument:

AgilentB1500: Main instrument class
SMU: Instantiated by main instrument class for every SMU

All query commands return a human readable dict of settings. These are intended for debugging/logging/file headers, not for passing to the accompanying setting commands.

class pymeasure.instruments.agilent.agilentB1500.AgilentB1500(adapter, name='Agilent B1500 Semiconductor Parameter Analyzer', **kwargs)

Bases: SCPIUnknownMixin, Instrument

Represents the Agilent B1500 Semiconductor Parameter Analyzer and provides a high-level interface for taking different kinds of measurements.

property smu_references: Returns all SMU instances.

property smu_names: Returns all SMU names.

query_learn(query_type)

Queries settings from the instrument (*LRN?). Returns dict of settings.

Parameters: query_type (int or str) – Query type (number according to manual)

query_learn_header(query_type, **kwargs)

Queries settings from the instrument (*LRN?). Returns dict of settings in human readable format for debugging or file headers. For optional arguments check the underlying definition of QueryLearn.query_learn_header().

Parameters: query_type (int or str) – Query type (number according to manual)

reset(): Resets the instrument to default settings (*RST)

query_modules()

Queries module models from the instrument. Returns dictionary of channel and module type.

Returns: Channel:Module Type
Return type: dict

initialize_smu(channel, smu_type, name)

Initializes SMU instance by calling SMU.

Parameters

channel (int) – SMU channel
smu_type (str) – SMU type, e.g. 'HRSMU'
name (str) – SMU name for pymeasure (data output etc.)

Returns

SMU instance

Return type

SMU

initialize_all_smus(): Initialize all SMUs by querying available modules and creating a SMU class instance for each. SMUs are accessible via attributes .smu1 etc.

pause(pause_seconds)

Pauses Command Execution for given time in seconds (PA)

Parameters: pause_seconds (int) – Seconds to pause

abort(): Aborts the present operation but channels may still output current/voltage (AB)

force_gnd(): Force 0V on all channels immediately. Current Settings can be restored with RZ. (DZ)

check_errors(): Check for errors (ERRX?)

check_idle(): Check if instrument is idle (*OPC?)

clear_buffer(): Clear output data buffer (BC)

clear_timer(): Clear timer count (TSR)

send_trigger(): Send trigger to start measurement (except High Speed Spot) (XE)

property auto_calibration

Enable/Disable SMU auto-calibration every 30 minutes. (CM)

Type: bool

data_format(output_format, mode=0)

Specifies data output format. Check Documentation for parameters. Should be called once per session to set the data format for interpreting the measurement values read from the instrument. (FMT)

Currently implemented are format 1, 11, and 21.

Parameters

output_format (str) – Output format string, e.g. FMT21
mode (int, optional) – Data output mode, defaults to 0 (only measurement data is returned)

property parallel_meas

Enable/Disable parallel measurements.: Effective for SMUs using HSADC and measurement modes 1,2,10,18. (PAD)

Type: bool

query_meas_settings(): Read settings for TM, AV, CM, FMT and MM commands (31) from the instrument.

query_meas_mode(): Read settings for MM command (part of 31) from the instrument.

meas_mode(mode, *args)

Set Measurement mode of channels. Measurements will be taken in the same order as the SMU references are passed. (MM)

Parameters

mode (MeasMode) –
Measurement mode
- Spot
- Staircase Sweep
- Sampling
args (SMU) – SMU references

query_adc_setup(): Read ADC settings (55, 56) from the instrument.

adc_setup(adc_type, mode, N='')

Set up operation mode and parameters of ADC for each ADC type. (AIT) Defaults:

HSADC: Auto N=1, Manual N=1, PLC N=1, Time N=0.000002(s)

HRADC: Auto N=6, Manual N=3, PLC N=1

Parameters

adc_type (ADCType) – ADC type
mode (ADCMode) – ADC mode
N (str, optional) – additional parameter, check documentation, defaults to ''

adc_averaging(number, mode='Auto')

Set number of averaging samples of the HSADC. (AV)

Defaults: N=1, Auto

Parameters

number (int) – Number of averages
mode (AutoManual, optional) – Mode ('Auto','Manual'), defaults to ‘Auto’

property adc_auto_zero

Enable/Disable ADC zero function. Halves the integration time, if off. (AZ)

Type: bool

property time_stamp

Enable/Disable Time Stamp function. (TSC)

Type: bool

query_time_stamp_setting(): Read time stamp settings (60) from the instrument.

wait_time(wait_type, N, offset=0)

Configure wait time. (WAT)

Parameters

wait_type (WaitTimeType) – Wait time type
N (float) – Coefficient for initial wait time, default: 1
offset (int, optional) – Offset for wait time, defaults to 0

query_staircase_sweep_settings(): Reads Staircase Sweep Measurement settings (33) from the instrument.

sweep_timing(hold, delay, step_delay=0, step_trigger_delay=0, measurement_trigger_delay=0)

Sets Hold Time, Delay Time and Step Delay Time for staircase or multi channel sweep measurement. (WT) If not set, all parameters are 0.

Parameters

hold (float) – Hold time
delay (float) – Delay time
step_delay (float, optional) – Step delay time, defaults to 0
step_trigger_delay (float, optional) – Trigger delay time, defaults to 0
measurement_trigger_delay (float, optional) – Measurement trigger delay time, defaults to 0

sweep_auto_abort(abort, post='START')

Enables/Disables the automatic abort function. Also sets the post measurement condition. (WM)

Parameters

abort (bool) – Enable/Disable automatic abort
post (StaircaseSweepPostOutput, optional) – Output after measurement, defaults to ‘Start’

query_sampling_settings(): Reads Sampling Measurement settings (47) from the instrument.

property sampling_mode

Set linear or logarithmic sampling mode. (ML)

Type: SamplingMode

sampling_timing(hold_bias, interval, number, hold_base=0)

Sets Timing Parameters for the Sampling Measurement (MT)

Parameters

hold_bias (float) – Bias hold time
interval (float) – Sampling interval
number (int) – Number of Samples
hold_base (float, optional) – Base hold time, defaults to 0

sampling_auto_abort(abort, post='Bias')

Enables/Disables the automatic abort function. Also sets the post measurement condition. (MSC)

Parameters

abort (bool) – Enable/Disable automatic abort
post (SamplingPostOutput, optional) – Output after measurement, defaults to ‘Bias’

read_data(number_of_points)

Reads all data from buffer and returns Pandas DataFrame. Specify number of measurement points for correct splitting of the data list.

Parameters: number_of_points (int) – Number of measurement points
Returns: Measurement Data
Return type: pd.DataFrame

read_channels(nchannels)

Reads data for 1 measurement point from the buffer. Specify number of measurement channels + sweep sources (depending on data output setting).

Parameters: nchannels (int) – Number of channels which return data
Returns: Measurement data
Return type: tuple

query_series_resistor(): Read series resistor status (53) for all SMUs.

query_meas_range_current_auto(): Read auto ranging mode status (54) for all SMUs.

query_meas_op_mode(): Read SMU measurement operation mode (46) for all SMUs.

query_meas_ranges(): Read measruement ranging status (32) for all SMUs.

class pymeasure.instruments.agilent.agilentB1500.SMU(parent, channel, smu_type, name, **kwargs)

Bases: object

Provides specific methods for the SMUs of the Agilent B1500 mainframe

Parameters

parent (AgilentB1500) – Instance of the B1500 mainframe class
channel (int) – Channel number of the SMU
smu_type (str) – Type of the SMU
name (str) – Name of the SMU

write(string): Wraps Instrument.write() method of B1500.

ask(string): Wraps ask() method of B1500.

query_learn(query_type, command): Wraps query_learn() method of B1500.

check_errors(): Wraps check_errors() method of B1500.

property status: Query status of the SMU.

enable(): Enable Source/Measurement Channel (CN)

disable(): Disable Source/Measurement Channel (CL)

force_gnd(): Force 0V immediately. Current Settings can be restored with RZ (not implemented). (DZ)

property filter

Enables/Disables SMU Filter. (FL)

Type: bool

property series_resistor

Enables/Disables 1MOhm series resistor. (SSR)

Type: bool

property meas_op_mode

Set SMU measurement operation mode. (CMM)

Type: MeasOpMode

property adc_type

ADC type of individual measurement channel. (AAD)

Type: ADCType

force(source_type, source_range, output, comp='', comp_polarity='', comp_range='')

Applies DC Current or Voltage from SMU immediately. (DI, DV)

Parameters

source_type (str) – Source type ('Voltage','Current')
source_range (int or str) – Output range index or name
output (float) – Source output value in A or V
comp (float, optional) – Compliance value, defaults to previous setting
comp_polarity (CompliancePolarity) – Compliance polairty, defaults to auto
comp_range (int or str, optional) – Compliance ranging type, defaults to auto

ramp_source(source_type, source_range, target_output, comp='', comp_polarity='', comp_range='', stepsize=0.001, pause=0.02)

Ramps to a target output from the set value with a given step size, each separated by a pause.

Parameters

source_type (str) – Source type ('Voltage' or 'Current')
target_output – Target output voltage or current
irange (int) – Output range index
comp (float, optional) – Compliance, defaults to previous setting
comp_polarity (CompliancePolarity) – Compliance polairty, defaults to auto
comp_range (int or str, optional) – Compliance ranging type, defaults to auto
stepsize – Maximum size of steps
pause – Duration in seconds to wait between steps

Type

target_output: float

property meas_range_current

Current measurement range index. (RI)

Possible settings depend on SMU type, e.g. 0 for Auto Ranging: SMUCurrentRanging

property meas_range_voltage

Voltage measurement range index. (RV)

Possible settings depend on SMU type, e.g. 0 for Auto Ranging: SMUVoltageRanging

meas_range_current_auto(mode, rate=50)

Specifies the auto range operation. Check Documentation. (RM)

Parameters

mode (int) – Range changing operation mode
rate (int, optional) – Parameter used to calculate the current value, defaults to 50

staircase_sweep_source(source_type, mode, source_range, start, stop, steps, comp, Pcomp='')

Specifies Staircase Sweep Source (Current or Voltage) and its parameters. (WV or WI)

Parameters

source_type (str) – Source type ('Voltage','Current')
mode (SweepMode) – Sweep mode
source_range (int) – Source range index
start (float) – Sweep start value
stop (float) – Sweep stop value
steps (int) – Number of sweep steps
comp (float) – Compliance value
Pcomp (float, optional) – Power compliance, defaults to not set

synchronous_sweep_source(source_type, source_range, start, stop, comp, Pcomp='')

Specifies Synchronous Staircase Sweep Source (Current or Voltage) and its parameters. (WSV or WSI)

Parameters

source_type (str) – Source type ('Voltage','Current')
source_range (int) – Source range index
start (float) – Sweep start value
stop (float) – Sweep stop value
comp (float) – Compliance value
Pcomp (float, optional) – Power compliance, defaults to not set

sampling_source(source_type, source_range, base, bias, comp)

Sets DC Source (Current or Voltage) for sampling measurement. DV/DI commands on the same channel overwrite this setting. (MV or MI)

Parameters

source_type (str) – Source type ('Voltage','Current')
source_range (int) – Source range index
base (float) – Base voltage/current
bias (float) – Bias voltage/current
comp (float) – Compliance value

Supporting Classes 

Classes that provide additional functionalities:

QueryLearn: Process read out of instrument settings
SMUCurrentRanging, SMUVoltageRanging: Allowed ranges for different SMU types and transformation of range names to indices (base: Ranging)

class pymeasure.instruments.agilent.agilentB1500.QueryLearn

Bases: object

Methods to issue and process *LRN? (learn) command and response.

static query_learn(ask, query_type)

Issues *LRN? (learn) command to the instrument to read configuration. Returns dictionary of commands and set values.

Parameters: query_type (int) – Query type according to the programming guide
Returns: Dictionary of command and set values
Return type: dict

classmethod query_learn_header(ask, query_type, smu_references, single_command=False)

Issues *LRN? (learn) command to the instrument to read configuration. Processes information to human readable values for debugging purposes or file headers.

Parameters

ask (Instrument.ask) – ask method of the instrument
query_type (int or str) – Number according to Programming Guide
smu_references (dict) – SMU references by channel
single_command (str) – if only a single command should be returned, defaults to False

Returns

Read configuration

Return type

dict

static to_dict(parameters, names, *args)

Takes parameters returned by query_learn() and ordered list of corresponding parameter names (optional function) and returns dict of parameters including names.

Parameters

parameters (dict) – Parameters for one command returned by query_learn()
names (list) – list of names or (name, function) tuples, ordered

Returns

Parameter name and (processed) parameter

Return type

dict

class pymeasure.instruments.agilent.agilentB1500.Ranging(supported_ranges, ranges, fixed_ranges=False)

Bases: object

Possible Settings for SMU Current/Voltage Output/Measurement ranges. Transformation of available Voltage/Current Range Names to Index and back.

Parameters

supported_ranges (list) – Ranges which are supported (list of range indizes)
ranges (dict) – All range names {Name: Indizes}
fixed_ranges – add fixed ranges (negative indizes); defaults to False

__call__(input_value)

Gives named tuple (name/index) of given Range. Throws error if range is not supported by this SMU.

Parameters: input (str or int) – Range name or index
Returns: named tuple (name/index) of range
Return type: namedtuple

class pymeasure.instruments.agilent.agilentB1500.SMUCurrentRanging(smu_type)

Bases: object

Provides Range Name/Index transformation for current measurement/sourcing. Validity of ranges is checked against the type of the SMU.

Omitting the ‘limited auto ranging’/’range fixed’ specification in the range string for current measurement defaults to ‘limited auto ranging’.

Full specification: ‘1 nA range fixed’ or ‘1 nA limited auto ranging’

‘1 nA’ defaults to ‘1 nA limited auto ranging’

class pymeasure.instruments.agilent.agilentB1500.SMUVoltageRanging(smu_type)

Bases: object

Provides Range Name/Index transformation for voltage measurement/sourcing. Validity of ranges is checked against the type of the SMU.

Omitting the ‘limited auto ranging’/’range fixed’ specification in the range string for voltage measurement defaults to ‘limited auto ranging’.

Full specification: ‘2 V range fixed’ or ‘2 V limited auto ranging’

‘2 V’ defaults to ‘2 V limited auto ranging’

Enumerations 

Enumerations are used for easy selection of the available parameters (where it is applicable). Methods accept member name or number as input, but name is recommended for readability reasons. The member number is passed to the instrument. Converting an enumeration member into a string gives a title case, whitespace separated string (__str__()) which cannot be used to select an enumeration member again. It’s purpose is only logging or documentation.

class pymeasure.instruments.agilent.agilentB1500.CustomIntEnum(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: IntEnum

Provides additional methods to IntEnum:

Conversion to string automatically replaces ‘_’ with ‘ ‘ in names and converts to title case
get classmethod to get enum reference with name or integer

__str__(): Gives title case string of enum value

classmethod get(input_value)

Gives Enum member by specifying name or value.

Parameters: input_value (str or int) – Enum name or value
Returns: Enum member

class pymeasure.instruments.agilent.agilentB1500.ADCType(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

ADC Type

HSADC = 0: High-speed ADC

HRADC = 1: High-resolution ADC

HSADC_PULSED = 2: High-resolution ADC for pulsed measurements

class pymeasure.instruments.agilent.agilentB1500.ADCMode(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

ADC Mode

AUTO = 0

MANUAL = 1

PLC = 2

TIME = 3

class pymeasure.instruments.agilent.agilentB1500.AutoManual(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

Auto/Manual selection

AUTO = 0

MANUAL = 1

class pymeasure.instruments.agilent.agilentB1500.MeasMode(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

Measurement Mode

SPOT = 1

STAIRCASE_SWEEP = 2

SAMPLING = 10

class pymeasure.instruments.agilent.agilentB1500.MeasOpMode(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

Measurement Operation Mode

COMPLIANCE_SIDE = 0

CURRENT = 1

VOLTAGE = 2

FORCE_SIDE = 3

COMPLIANCE_AND_FORCE_SIDE = 4

class pymeasure.instruments.agilent.agilentB1500.SweepMode(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

Sweep Mode

LINEAR_SINGLE = 1

LOG_SINGLE = 2

LINEAR_DOUBLE = 3

LOG_DOUBLE = 4

class pymeasure.instruments.agilent.agilentB1500.SamplingMode(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

Sampling Mode

LINEAR = 1

LOG_10 = 2: Logarithmic 10 data points/decade

LOG_25 = 3: Logarithmic 25 data points/decade

LOG_50 = 4: Logarithmic 50 data points/decade

LOG_100 = 5: Logarithmic 100 data points/decade

LOG_250 = 6: Logarithmic 250 data points/decade

LOG_5000 = 7: Logarithmic 5000 data points/decade

class pymeasure.instruments.agilent.agilentB1500.SamplingPostOutput(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

Output after sampling

BASE = 1

BIAS = 2

class pymeasure.instruments.agilent.agilentB1500.StaircaseSweepPostOutput(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

Output after staircase sweep

START = 1

STOP = 2

class pymeasure.instruments.agilent.agilentB1500.CompliancePolarity(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

Compliance polarity

AUTO = 0

MANUAL = 1

class pymeasure.instruments.agilent.agilentB1500.WaitTimeType(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)

Bases: CustomIntEnum

Wait time type

SMU_SOURCE = 1

SMU_MEASUREMENT = 2

CMU_MEASUREMENT = 3