[python source code]

buffer

The buffer commands module.

These commands are used in the following models: SMU2450

THIS FILE IS AUTO-GENERATED, IT SHOULD NOT BE MANUALLY MODIFIED.

Please report an issue if one is found.

Attributes and Functions 
- buffer.clearstats()
- buffer.delete()
- buffer.getstats()
- buffer.make()
- buffer.save()
- buffer.saveappend()
- buffer.write.format()
- buffer.write.reading()

Buffer

Bases: BaseTSPCmd

The buffer command tree.

Constants
  • .DIGITS_3_5: The number of digits to use for the first measurement.
  • .DIGITS_4_5: The number of digits to use for the first measurement.
  • .DIGITS_5_5: The number of digits to use for the first measurement.
  • .DIGITS_6_5: The number of digits to use for the first measurement.
  • .DIGITS_7_5: The number of digits to use for the first measurement.
  • .DIGITS_8_5: The number of digits to use for the first measurement.
  • .EXPR_ADD: Add the present and previous measurements.
  • .EXPR_AVERAGE: Average the present and previous measurements.
  • .EXPR_DIVIDE: Divide the present reading by the previous reading.
  • .EXPR_EXPONENT: Exponent (10^present reading).
  • .EXPR_LOG10: Log10 (log10(present reading)).
  • .EXPR_MULTIPLY: Multiply the present and previous measurements.
  • .EXPR_NONE: Remove the math expression.
  • .EXPR_POLY: Polynomial where r is present reading and c is constant.
  • .EXPR_POWER: Present reading raised to power of defined constant.
  • .EXPR_RATE: Rate of change (present reading - previous reading)/(timestamp of present reading - timestamp of previous reading).
  • .EXPR_RECIPROCAL: Reciprocal (1/present reading).
  • .EXPR_SQROOT: Square root of the present reading.
  • .EXPR_SUBTRACT: Present reading - previous reading.
  • .FILL_CONTINUOUS: Fill the buffer continuously.
  • .FILL_ONCE: Fill the buffer, then stop.
  • .OFF: Do not log information events.
  • .ON: Log information events.
  • .SAVE_FORMAT_TIME: Include dates, times, and fractional seconds in the buffer.
  • .SAVE_RAW_TIME: Include seconds and fractional seconds in the buffer.
  • .SAVE_RELATIVE_TIME: Include relative timestamps in the buffer.
  • .SAVE_TIMESTAMP_TIME: Include timestamps in the buffer.
  • .STAT_LIMIT: Source function level was limited.
  • .STAT_LIMIT1_HIGH: Reading is above high limit 1.
  • .STAT_LIMIT1_LOW: Reading is below low limit 1.
  • .STAT_LIMIT2_HIGH: Reading is above high limit 2.
  • .STAT_LIMIT2_LOW: Reading is below low limit 2.
  • .STAT_ORIGIN: A/D converter from which reading originated; for most instruments, this will always be 0 (main). For digitizing instruments, can be 2 (digitize).
  • .STAT_OUTPUT: Output was on.
  • .STAT_OVER_TEMP: Overtemperature condition was active.
  • .STAT_PROTECTION: Overvoltage protection was active.
  • .STAT_QUESTIONABLE: Measure status questionable.
  • .STAT_READBACK: Measured source value was read.
  • .STAT_REL: Relative offset.
  • .STAT_SCAN: Scan.
  • .STAT_SENSE: Four-wire sense was used.
  • .STAT_START_GROUP: First reading in a group.
  • .STAT_TERMINAL: Measure terminal, front is 1, rear is 0.
  • .STYLE_COMPACT: Store readings with reduced accuracy (6.5 digits) with no formatting information, 1 μs accurate timestamp.
  • .STYLE_FULL: Store the same information with full accuracy with formatting, plus additional information.
  • .STYLE_STANDARD: Store readings with full accuracy with formatting.
  • .STYLE_WRITABLE: Store external reading buffer data.
  • .STYLE_WRITABLE_FULL: Store external reading buffer data with two reading values.
  • .UNIT_AMP: Set units of measure to dc current.
  • .UNIT_AMP_AC: Set units of measure to ac current.
  • .UNIT_CELSIUS: Set units of measure to Celsius.
  • .UNIT_CUSTOM1: Custom unit 1 (defined by buffer.unit()).
  • .UNIT_CUSTOM2: Custom unit 2 (defined by buffer.unit()).
  • .UNIT_CUSTOM3: Custom unit 3 (defined by buffer.unit()).
  • .UNIT_DAC: Set units of measure to DAC (voltage).
  • .UNIT_DBM: Set units of measure to decibel-milliwatts.
  • .UNIT_DECIBEL: Set units of measure to decibels.
  • .UNIT_DIO: Set units of measure to digital I/O.
  • .UNIT_FAHRENHEIT: Set units of measure to Fahrenheit.
  • .UNIT_FARAD: Set units of measure to capacitance.
  • .UNIT_HERTZ: Set units of measure to frequency.
  • .UNIT_KELVIN: Set units of measure to Kelvin.
  • .UNIT_NONE: Set units of measure to no units.
  • .UNIT_OHM: Set units of measure to ohms.
  • .UNIT_PERCENT: Set units of measure to percent.
  • .UNIT_RATIO: Set units of measure to dc voltage ratio.
  • .UNIT_RECIPROCAL: Set units of measure to reciprocal.
  • .UNIT_SECOND: Set units of measure to period.
  • .UNIT_TOT: Set units of measure to totalizer.
  • .UNIT_VOLT: Set units of measure to dc voltage.
  • .UNIT_VOLT_AC: Set units of measure to ac voltage.
  • .UNIT_WATT: Set units of measure to watts.
  • .UNIT_X: Set units of measure to buffer.UNIT_X.
Properties and methods
  • .clearstats(): The buffer.clearstats() function.
  • .delete(): The buffer.delete() function.
  • .getstats(): The buffer.getstats() function.
  • .make(): The buffer.make() function.
  • .save(): The buffer.save() function.
  • .saveappend(): The buffer.saveappend() function.
  • .write: The buffer.write command tree.

DIGITS_3_5 class-attribute instance-attribute 

DIGITS_3_5 = 'buffer.DIGITS_3_5'

DIGITS_4_5 class-attribute instance-attribute 

DIGITS_4_5 = 'buffer.DIGITS_4_5'

DIGITS_5_5 class-attribute instance-attribute 

DIGITS_5_5 = 'buffer.DIGITS_5_5'

DIGITS_6_5 class-attribute instance-attribute 

DIGITS_6_5 = 'buffer.DIGITS_6_5'

DIGITS_7_5 class-attribute instance-attribute 

DIGITS_7_5 = 'buffer.DIGITS_7_5'

DIGITS_8_5 class-attribute instance-attribute 

DIGITS_8_5 = 'buffer.DIGITS_8_5'

EXPR_ADD class-attribute instance-attribute 

EXPR_ADD = 'buffer.EXPR_ADD'

EXPR_AVERAGE class-attribute instance-attribute 

EXPR_AVERAGE = 'buffer.EXPR_AVERAGE'

EXPR_DIVIDE class-attribute instance-attribute 

EXPR_DIVIDE = 'buffer.EXPR_DIVIDE'

EXPR_EXPONENT class-attribute instance-attribute 

EXPR_EXPONENT = 'buffer.EXPR_EXPONENT'

EXPR_LOG10 class-attribute instance-attribute 

EXPR_LOG10 = 'buffer.EXPR_LOG10'

EXPR_MULTIPLY class-attribute instance-attribute 

EXPR_MULTIPLY = 'buffer.EXPR_MULTIPLY'

EXPR_NONE class-attribute instance-attribute 

EXPR_NONE = 'buffer.EXPR_NONE'

EXPR_POLY class-attribute instance-attribute 

EXPR_POLY = 'buffer.EXPR_POLY'

EXPR_POWER class-attribute instance-attribute 

EXPR_POWER = 'buffer.EXPR_POWER'

EXPR_RATE class-attribute instance-attribute 

EXPR_RATE = 'buffer.EXPR_RATE'

EXPR_RECIPROCAL class-attribute instance-attribute 

EXPR_RECIPROCAL = 'buffer.EXPR_RECIPROCAL'

EXPR_SQROOT class-attribute instance-attribute 

EXPR_SQROOT = 'buffer.EXPR_SQROOT'

EXPR_SUBTRACT class-attribute instance-attribute 

EXPR_SUBTRACT = 'buffer.EXPR_SUBTRACT'

FILL_CONTINUOUS class-attribute instance-attribute 

FILL_CONTINUOUS = 'buffer.FILL_CONTINUOUS'

FILL_ONCE class-attribute instance-attribute 

FILL_ONCE = 'buffer.FILL_ONCE'

OFF class-attribute instance-attribute 

OFF = 'buffer.OFF'

ON class-attribute instance-attribute 

ON = 'buffer.ON'

SAVE_FORMAT_TIME class-attribute instance-attribute 

SAVE_FORMAT_TIME = 'buffer.SAVE_FORMAT_TIME'

SAVE_RAW_TIME class-attribute instance-attribute 

SAVE_RAW_TIME = 'buffer.SAVE_RAW_TIME'

SAVE_RELATIVE_TIME class-attribute instance-attribute 

SAVE_RELATIVE_TIME = 'buffer.SAVE_RELATIVE_TIME'

SAVE_TIMESTAMP_TIME class-attribute instance-attribute 

SAVE_TIMESTAMP_TIME = 'buffer.SAVE_TIMESTAMP_TIME'

STAT_LIMIT class-attribute instance-attribute 

STAT_LIMIT = 'buffer.STAT_LIMIT'

STAT_LIMIT1_HIGH class-attribute instance-attribute 

STAT_LIMIT1_HIGH = 'buffer.STAT_LIMIT1_HIGH'

STAT_LIMIT1_LOW class-attribute instance-attribute 

STAT_LIMIT1_LOW = 'buffer.STAT_LIMIT1_LOW'

STAT_LIMIT2_HIGH class-attribute instance-attribute 

STAT_LIMIT2_HIGH = 'buffer.STAT_LIMIT2_HIGH'

STAT_LIMIT2_LOW class-attribute instance-attribute 

STAT_LIMIT2_LOW = 'buffer.STAT_LIMIT2_LOW'

STAT_ORIGIN class-attribute instance-attribute 

STAT_ORIGIN = 'buffer.STAT_ORIGIN'

STAT_OUTPUT class-attribute instance-attribute 

STAT_OUTPUT = 'buffer.STAT_OUTPUT'

STAT_OVER_TEMP class-attribute instance-attribute 

STAT_OVER_TEMP = 'buffer.STAT_OVER_TEMP'

STAT_PROTECTION class-attribute instance-attribute 

STAT_PROTECTION = 'buffer.STAT_PROTECTION'

STAT_QUESTIONABLE class-attribute instance-attribute 

STAT_QUESTIONABLE = 'buffer.STAT_QUESTIONABLE'

STAT_READBACK class-attribute instance-attribute 

STAT_READBACK = 'buffer.STAT_READBACK'

STAT_REL class-attribute instance-attribute 

STAT_REL = 'buffer.STAT_REL'

STAT_SCAN class-attribute instance-attribute 

STAT_SCAN = 'buffer.STAT_SCAN'

STAT_SENSE class-attribute instance-attribute 

STAT_SENSE = 'buffer.STAT_SENSE'

STAT_START_GROUP class-attribute instance-attribute 

STAT_START_GROUP = 'buffer.STAT_START_GROUP'

STAT_TERMINAL class-attribute instance-attribute 

STAT_TERMINAL = 'buffer.STAT_TERMINAL'

STYLE_COMPACT class-attribute instance-attribute 

STYLE_COMPACT = 'buffer.STYLE_COMPACT'

STYLE_FULL class-attribute instance-attribute 

STYLE_FULL = 'buffer.STYLE_FULL'

STYLE_STANDARD class-attribute instance-attribute 

STYLE_STANDARD = 'buffer.STYLE_STANDARD'

STYLE_WRITABLE class-attribute instance-attribute 

STYLE_WRITABLE = 'buffer.STYLE_WRITABLE'

STYLE_WRITABLE_FULL class-attribute instance-attribute 

STYLE_WRITABLE_FULL = 'buffer.STYLE_WRITABLE_FULL'

UNIT_AMP class-attribute instance-attribute 

UNIT_AMP = 'buffer.UNIT_AMP'

UNIT_AMP_AC class-attribute instance-attribute 

UNIT_AMP_AC = 'buffer.UNIT_AMP_AC'

UNIT_CELSIUS class-attribute instance-attribute 

UNIT_CELSIUS = 'buffer.UNIT_CELSIUS'

UNIT_CUSTOM1 class-attribute instance-attribute 

UNIT_CUSTOM1 = 'buffer.UNIT_CUSTOM1'

UNIT_CUSTOM2 class-attribute instance-attribute 

UNIT_CUSTOM2 = 'buffer.UNIT_CUSTOM2'

UNIT_CUSTOM3 class-attribute instance-attribute 

UNIT_CUSTOM3 = 'buffer.UNIT_CUSTOM3'

UNIT_DAC class-attribute instance-attribute 

UNIT_DAC = 'buffer.UNIT_DAC'

UNIT_DBM class-attribute instance-attribute 

UNIT_DBM = 'buffer.UNIT_DBM'

UNIT_DECIBEL class-attribute instance-attribute 

UNIT_DECIBEL = 'buffer.UNIT_DECIBEL'

UNIT_DIO class-attribute instance-attribute 

UNIT_DIO = 'buffer.UNIT_DIO'

UNIT_FAHRENHEIT class-attribute instance-attribute 

UNIT_FAHRENHEIT = 'buffer.UNIT_FAHRENHEIT'

UNIT_FARAD class-attribute instance-attribute 

UNIT_FARAD = 'buffer.UNIT_FARAD'

UNIT_HERTZ class-attribute instance-attribute 

UNIT_HERTZ = 'buffer.UNIT_HERTZ'

UNIT_KELVIN class-attribute instance-attribute 

UNIT_KELVIN = 'buffer.UNIT_KELVIN'

UNIT_NONE class-attribute instance-attribute 

UNIT_NONE = 'buffer.UNIT_NONE'

UNIT_OHM class-attribute instance-attribute 

UNIT_OHM = 'buffer.UNIT_OHM'

UNIT_PERCENT class-attribute instance-attribute 

UNIT_PERCENT = 'buffer.UNIT_PERCENT'

UNIT_RATIO class-attribute instance-attribute 

UNIT_RATIO = 'buffer.UNIT_RATIO'

UNIT_RECIPROCAL class-attribute instance-attribute 

UNIT_RECIPROCAL = 'buffer.UNIT_RECIPROCAL'

UNIT_SECOND class-attribute instance-attribute 

UNIT_SECOND = 'buffer.UNIT_SECOND'

UNIT_TOT class-attribute instance-attribute 

UNIT_TOT = 'buffer.UNIT_TOT'

UNIT_VOLT class-attribute instance-attribute 

UNIT_VOLT = 'buffer.UNIT_VOLT'

UNIT_VOLT_AC class-attribute instance-attribute 

UNIT_VOLT_AC = 'buffer.UNIT_VOLT_AC'

UNIT_WATT class-attribute instance-attribute 

UNIT_WATT = 'buffer.UNIT_WATT'

UNIT_X class-attribute instance-attribute 

UNIT_X = 'buffer.UNIT_X'

write property 

write: BufferWrite

Return the buffer.write command tree.

Sub-properties and sub-methods
  • .format(): The buffer.write.format() function.
  • .reading(): The buffer.write.reading() function.

clearstats 

clearstats(buffer_var: str | None = None) -> None

Run the buffer.clearstats() function.

Description
  • This function clears the statistical information associated with the specified buffer.
TSP Syntax 
- buffer.clearstats()
Parameters:
  • buffer_var (optional, default: None ) –

    The name of the reading buffer, which may be a default buffer (defbuffer1 or defbuffer2) or a user-defined buffer; defaults to defbuffer1 if not specified.
Raises:

delete 

delete(buffer_name: str) -> None

Run the buffer.delete() function.

Description
  • This function deletes a user-defined reading buffer.
TSP Syntax 
- buffer.delete()
Parameters:
  • buffer_name (str) –

    The name of a user-defined reading buffer.
Raises:

getstats 

getstats(
    buffer_var: str | None = None,
    rel_start_time: str | None = None,
    rel_end_time: str | None = None,
) -> dict[Any, Any]

Run the buffer.getstats() function.

Description
  • This function returns statistics from a specified reading buffer.
TSP Syntax 
- buffer.getstats()
Parameters:
  • buffer_var (optional, default: None ) –

    The name of the reading buffer, which may be a default buffer (defbuffer1 or defbuffer2) or a user-defined buffer; if no buffer is specified, this parameter defaults to defbuffer1.

  • rel_start_time (optional, default: None ) –

    The start time in seconds relative to the start time of the data in the buffer.

  • rel_end_time (optional, default: None ) –

    The end time in seconds relative to the start time of the data in the buffer.
Returns:
  • dict[Any, Any] –

    The result of the function call.
Raises:

make 

make(buffer_size: int, style: str | None = None, *, buffer_name: str | None = None) -> Buffervar

Run the buffer.make() function.

Description
  • This function creates a user-defined reading buffer.
TSP Syntax 
- buffer.make()
Parameters:
  • buffer_size (int) –

    The maximum number of readings that can be stored in bufferVar; minimum is 10; 0 to maximize buffer size (see Details).

  • style (optional, default: None ) –

    The type of reading buffer to create.

  • buffer_name (optional, default: None ) –

    The name of the buffer variable to create. If not provided, an auto-generated variable will be used.
Returns:
Raises:

save 

save(
    buffer_var: str,
    file_name: str,
    time_format: str | None = None,
    start: str | None = None,
    end: str | None = None,
) -> None

Run the buffer.save() function.

Description
  • This function saves data from the specified reading buffer to a USB flash drive.
TSP Syntax 
- buffer.save()
Parameters:
  • buffer_var (str) –

    The name of the reading buffer, which may be a default buffer (defbuffer1 or defbuffer2) or a user-defined buffer.

  • file_name (str) –

    A string that indicates the name of the file on the USB flash drive in which to save the reading buffer.

  • time_format (optional, default: None ) –

    Defines how date and time information from the buffer is saved in the file on the USB flash drive; the options are.

  • start (optional, default: None ) –

    Defines the starting point in the buffer to start saving data.

  • end (optional, default: None ) –

    Defines the ending point in the buffer to stop saving data.
Raises:

saveappend 

saveappend(
    buffer_var: str,
    file_name: str,
    time_format: str | None = None,
    start: str | None = None,
    end: str | None = None,
) -> None

Run the buffer.saveappend() function.

Description
  • This function appends data from the reading buffer to a file on the USB flash drive.
TSP Syntax 
- buffer.saveappend()
Parameters:
  • buffer_var (str) –

    Indicates the reading buffer to use; the default buffers (defbuffer1 or defbuffer2) or the name of a user-defined buffer; if no buffer is specified, defbuffer1 is used.

  • file_name (str) –

    A string that indicates the name of the file on the USB flash drive in which to save the reading buffer.

  • time_format (optional, default: None ) –

    Indicates how date and time information from the buffer is saved in the file on the USB flash drive; the options are.

  • start (optional, default: None ) –

    Defines the starting point in the buffer to start saving data.

  • end (optional, default: None ) –

    Defines the ending point in the buffer to stop saving data.
Raises:

BufferWrite

Bases: BaseTSPCmd

The buffer.write command tree.

Properties and methods
  • .format(): The buffer.write.format() function.
  • .reading(): The buffer.write.reading() function.

format 

format(
    buffer_var: str,
    units: str,
    display_digits: int,
    extra_units: str | None = None,
    extra_digits: int | None = None,
) -> None

Run the buffer.write.format() function.

Description
  • This function sets the units and number of digits of the readings that are written into the reading buffer.
TSP Syntax 
- buffer.write.format()
Parameters:
  • buffer_var (str) –

    The name of the buffer.

  • units (str) –

    The units for the first measurement in the buffer index.

  • display_digits (int) –

    The number of digits to use for the first measurement.

  • extra_units (optional, default: None ) –

    The units for the second measurement in the buffer index; the selections are the same as units (only valid for buffer style WRITABLE_FULL); if not specified, uses the value for units.

  • extra_digits (optional, default: None ) –

    The number of digits to use for the second measurement; the selections are the same as displayDigits (only valid for buffer style WRITABLE_FULL); if not specified, uses the value for displayDigits.
Raises:

reading 

reading(
    buffer_var: str,
    reading_value: str,
    extra_value: str | None = None,
    seconds: str | None = None,
    fractional_seconds: str | None = None,
    status: str | None = None,
) -> None

Run the buffer.write.reading() function.

Description
  • This function allows you to write readings into the reading buffer.
TSP Syntax 
- buffer.write.reading()
Parameters:
  • buffer_var (str) –

    The name of the buffer.

  • reading_value (str) –

    The first value that is recorded in the buffer index.

  • extra_value (optional, default: None ) –

    A second value that is recorded in the buffer index (only valid for buffer style WRITABLE_FULL).

  • seconds (optional, default: None ) –

    An integer that represents the seconds.

  • fractional_seconds (optional, default: None ) –

    The portion of the time that represents the fractional seconds.

  • status (optional, default: None ) –

    Additional information about the reading; see Details.
Raises: