[python source code]

dvm

The dvm commands module.

These commands are used in the following models: LPD6, MSO4, MSO4B, MSO5, MSO5B, MSO5LP, MSO6, MSO6B

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Commands and Queries 
- DVM RESET
- DVM:AUTORange {ON|OFF|1|0}
- DVM:AUTORange?
- DVM:MEASUrement:FREQuency?
- DVM:MEASUrement:HIStory:AVErage?
- DVM:MEASUrement:HIStory:MAXimum?
- DVM:MEASUrement:HIStory:MINImum?
- DVM:MEASUrement:INFMAXimum?
- DVM:MEASUrement:INFMINimum?
- DVM:MEASUrement:VALue?
- DVM:MODe {ACRMS|ACDCRMS|DC|OFF}
- DVM:MODe?
- DVM:SOUrce {CH<x>}
- DVM:SOUrce?
- DVM:TRIGger:FREQuency:COUNTer {ON|OFF|1|0}
- DVM:TRIGger:FREQuency:COUNTer?

Dvm

Bases: SCPICmdWrite, SCPICmdRead

The DVM command.

Description
  • Resets the Digital Voltmeter measurements and history.
Usage
  • Using the .write(value) method will send the DVM value command.
SCPI Syntax 
- DVM RESET
Info
  • RESET specifies resetting DVM measurements and history.
Properties
  • .autorange: The DVM:AUTORange command.
  • .measurement: The DVM:MEASUrement command tree.
  • .mode: The DVM:MODe command.
  • .source: The DVM:SOUrce command.
  • .trigger: The DVM:TRIGger command tree.

autorange property 

autorange: DvmAutorange

Return the DVM:AUTORange command.

Description
  • Sets (or queries) the autorange state for the Digital Voltmeter. Note: The DVM will not autorange as long as the DVM source is the same channel as the trigger source.
Usage
  • Using the .query() method will send the DVM:AUTORange? query.
  • Using the .verify(value) method will send the DVM:AUTORange? query and raise an AssertionError if the returned value does not match value.
  • Using the .write(value) method will send the DVM:AUTORange value command.
SCPI Syntax 
- DVM:AUTORange {ON|OFF|1|0}
- DVM:AUTORange?
Info
  • ON turns on autorange for the Digital Voltmeter.
  • OFF turns autorange off.
  • 1 turns on autorange for the Digital Voltmeter.
  • 0 turns autorange off.

measurement property 

measurement: DvmMeasurement

Return the DVM:MEASUrement command tree.

Usage
  • Using the .query() method will send the DVM:MEASUrement? query.
  • Using the .verify(value) method will send the DVM:MEASUrement? query and raise an AssertionError if the returned value does not match value.
Sub-properties
  • .frequency: The DVM:MEASUrement:FREQuency command.
  • .history: The DVM:MEASUrement:HIStory command tree.
  • .infmaximum: The DVM:MEASUrement:INFMAXimum command.
  • .infminimum: The DVM:MEASUrement:INFMINimum command.
  • .value: The DVM:MEASUrement:VALue command.

mode property 

mode: DvmMode

Return the DVM:MODe command.

Description
  • This command specifies (or queries) the mode to use for the Digital Voltmeter.
Usage
  • Using the .query() method will send the DVM:MODe? query.
  • Using the .verify(value) method will send the DVM:MODe? query and raise an AssertionError if the returned value does not match value.
  • Using the .write(value) method will send the DVM:MODe value command.
SCPI Syntax 
- DVM:MODe {ACRMS|ACDCRMS|DC|OFF}
- DVM:MODe?
Info
  • ACRMS - displays the root-mean-square value of the acquired data, with the DC component removed.
  • ACDCRMS - displays the RMS value of the acquired data.
  • DC - displays the DC value of the acquired data.
  • OFF - turns the DVM off.

source property 

source: DvmSource

Return the DVM:SOUrce command.

Description
  • This command sets (or queries) the source for the DVM.
Usage
  • Using the .query() method will send the DVM:SOUrce? query.
  • Using the .verify(value) method will send the DVM:SOUrce? query and raise an AssertionError if the returned value does not match value.
  • Using the .write(value) method will send the DVM:SOUrce value command.
SCPI Syntax 
- DVM:SOUrce {CH<x>}
- DVM:SOUrce?
Info
  • CH<x> specify which channel to use as the source for the DVM.

trigger property 

trigger: DvmTrigger

Return the DVM:TRIGger command tree.

Usage
  • Using the .query() method will send the DVM:TRIGger? query.
  • Using the .verify(value) method will send the DVM:TRIGger? query and raise an AssertionError if the returned value does not match value.
Sub-properties
  • .frequency: The DVM:TRIGger:FREQuency command tree.

DvmAutorange

Bases: SCPICmdWrite, SCPICmdRead

The DVM:AUTORange command.

Description
  • Sets (or queries) the autorange state for the Digital Voltmeter. Note: The DVM will not autorange as long as the DVM source is the same channel as the trigger source.
Usage
  • Using the .query() method will send the DVM:AUTORange? query.
  • Using the .verify(value) method will send the DVM:AUTORange? query and raise an AssertionError if the returned value does not match value.
  • Using the .write(value) method will send the DVM:AUTORange value command.
SCPI Syntax 
- DVM:AUTORange {ON|OFF|1|0}
- DVM:AUTORange?
Info
  • ON turns on autorange for the Digital Voltmeter.
  • OFF turns autorange off.
  • 1 turns on autorange for the Digital Voltmeter.
  • 0 turns autorange off.

DvmMeasurement

Bases: SCPICmdRead

The DVM:MEASUrement command tree.

Usage
  • Using the .query() method will send the DVM:MEASUrement? query.
  • Using the .verify(value) method will send the DVM:MEASUrement? query and raise an AssertionError if the returned value does not match value.
Properties
  • .frequency: The DVM:MEASUrement:FREQuency command.
  • .history: The DVM:MEASUrement:HIStory command tree.
  • .infmaximum: The DVM:MEASUrement:INFMAXimum command.
  • .infminimum: The DVM:MEASUrement:INFMINimum command.
  • .value: The DVM:MEASUrement:VALue command.

frequency property 

frequency: DvmMeasurementFrequency

Return the DVM:MEASUrement:FREQuency command.

Description
  • This command returns the current frequency value for the DVM.
Usage
  • Using the .query() method will send the DVM:MEASUrement:FREQuency? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:FREQuency? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:FREQuency?

history property 

history: DvmMeasurementHistory

Return the DVM:MEASUrement:HIStory command tree.

Usage
  • Using the .query() method will send the DVM:MEASUrement:HIStory? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:HIStory? query and raise an AssertionError if the returned value does not match value.
Sub-properties
  • .average: The DVM:MEASUrement:HIStory:AVErage command.
  • .maximum: The DVM:MEASUrement:HIStory:MAXimum command.
  • .minimum: The DVM:MEASUrement:HIStory:MINImum command.

infmaximum property 

infmaximum: DvmMeasurementInfmaximum

Return the DVM:MEASUrement:INFMAXimum command.

Description
  • Returns the maximum DVM readout value over the entire time that the DVM has been on since the last change using the DVM:MODe or DVM:SOUrce commands or DVM RESET.
Usage
  • Using the .query() method will send the DVM:MEASUrement:INFMAXimum? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:INFMAXimum? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:INFMAXimum?

infminimum property 

infminimum: DvmMeasurementInfminimum

Return the DVM:MEASUrement:INFMINimum command.

Description
  • Returns the minimum readout value of the DVM over the entire time that the DVM has been on since the last change using the DVM:MODe or DVM:SOUrce commands or DVM RESET.
Usage
  • Using the .query() method will send the DVM:MEASUrement:INFMINimum? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:INFMINimum? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:INFMINimum?

value property 

value: DvmMeasurementValue

Return the DVM:MEASUrement:VALue command.

Description
  • Returns the DVM readout value (the largest displayed value at the top of the DVM screen).
Usage
  • Using the .query() method will send the DVM:MEASUrement:VALue? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:VALue? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:VALue?

DvmMeasurementFrequency

Bases: SCPICmdRead

The DVM:MEASUrement:FREQuency command.

Description
  • This command returns the current frequency value for the DVM.
Usage
  • Using the .query() method will send the DVM:MEASUrement:FREQuency? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:FREQuency? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:FREQuency?

DvmMeasurementHistory

Bases: SCPICmdRead

The DVM:MEASUrement:HIStory command tree.

Usage
  • Using the .query() method will send the DVM:MEASUrement:HIStory? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:HIStory? query and raise an AssertionError if the returned value does not match value.
Properties
  • .average: The DVM:MEASUrement:HIStory:AVErage command.
  • .maximum: The DVM:MEASUrement:HIStory:MAXimum command.
  • .minimum: The DVM:MEASUrement:HIStory:MINImum command.

average property 

average: DvmMeasurementHistoryAverage

Return the DVM:MEASUrement:HIStory:AVErage command.

Description
  • Returns the average DVM readout value over the history period. The history period is a constant period of 5 seconds.
Usage
  • Using the .query() method will send the DVM:MEASUrement:HIStory:AVErage? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:HIStory:AVErage? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:HIStory:AVErage?

maximum property 

maximum: DvmMeasurementHistoryMaximum

Return the DVM:MEASUrement:HIStory:MAXimum command.

Description
  • Returns the maximum readout value for the DVM function over the history period. The history period is a constant period of 5 seconds.
Usage
  • Using the .query() method will send the DVM:MEASUrement:HIStory:MAXimum? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:HIStory:MAXimum? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:HIStory:MAXimum?

minimum property 

minimum: DvmMeasurementHistoryMinimum

Return the DVM:MEASUrement:HIStory:MINImum command.

Description
  • Returns the minimum readout value for the DVM over the history period. The history period is a constant period of 5 seconds.
Usage
  • Using the .query() method will send the DVM:MEASUrement:HIStory:MINImum? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:HIStory:MINImum? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:HIStory:MINImum?

DvmMeasurementHistoryAverage

Bases: SCPICmdRead

The DVM:MEASUrement:HIStory:AVErage command.

Description
  • Returns the average DVM readout value over the history period. The history period is a constant period of 5 seconds.
Usage
  • Using the .query() method will send the DVM:MEASUrement:HIStory:AVErage? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:HIStory:AVErage? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:HIStory:AVErage?

DvmMeasurementHistoryMaximum

Bases: SCPICmdRead

The DVM:MEASUrement:HIStory:MAXimum command.

Description
  • Returns the maximum readout value for the DVM function over the history period. The history period is a constant period of 5 seconds.
Usage
  • Using the .query() method will send the DVM:MEASUrement:HIStory:MAXimum? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:HIStory:MAXimum? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:HIStory:MAXimum?

DvmMeasurementHistoryMinimum

Bases: SCPICmdRead

The DVM:MEASUrement:HIStory:MINImum command.

Description
  • Returns the minimum readout value for the DVM over the history period. The history period is a constant period of 5 seconds.
Usage
  • Using the .query() method will send the DVM:MEASUrement:HIStory:MINImum? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:HIStory:MINImum? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:HIStory:MINImum?

DvmMeasurementInfmaximum

Bases: SCPICmdRead

The DVM:MEASUrement:INFMAXimum command.

Description
  • Returns the maximum DVM readout value over the entire time that the DVM has been on since the last change using the DVM:MODe or DVM:SOUrce commands or DVM RESET.
Usage
  • Using the .query() method will send the DVM:MEASUrement:INFMAXimum? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:INFMAXimum? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:INFMAXimum?

DvmMeasurementInfminimum

Bases: SCPICmdRead

The DVM:MEASUrement:INFMINimum command.

Description
  • Returns the minimum readout value of the DVM over the entire time that the DVM has been on since the last change using the DVM:MODe or DVM:SOUrce commands or DVM RESET.
Usage
  • Using the .query() method will send the DVM:MEASUrement:INFMINimum? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:INFMINimum? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:INFMINimum?

DvmMeasurementValue

Bases: SCPICmdRead

The DVM:MEASUrement:VALue command.

Description
  • Returns the DVM readout value (the largest displayed value at the top of the DVM screen).
Usage
  • Using the .query() method will send the DVM:MEASUrement:VALue? query.
  • Using the .verify(value) method will send the DVM:MEASUrement:VALue? query and raise an AssertionError if the returned value does not match value.
SCPI Syntax 
- DVM:MEASUrement:VALue?

DvmMode

Bases: SCPICmdWrite, SCPICmdRead

The DVM:MODe command.

Description
  • This command specifies (or queries) the mode to use for the Digital Voltmeter.
Usage
  • Using the .query() method will send the DVM:MODe? query.
  • Using the .verify(value) method will send the DVM:MODe? query and raise an AssertionError if the returned value does not match value.
  • Using the .write(value) method will send the DVM:MODe value command.
SCPI Syntax 
- DVM:MODe {ACRMS|ACDCRMS|DC|OFF}
- DVM:MODe?
Info
  • ACRMS - displays the root-mean-square value of the acquired data, with the DC component removed.
  • ACDCRMS - displays the RMS value of the acquired data.
  • DC - displays the DC value of the acquired data.
  • OFF - turns the DVM off.

DvmSource

Bases: SCPICmdWrite, SCPICmdRead

The DVM:SOUrce command.

Description
  • This command sets (or queries) the source for the DVM.
Usage
  • Using the .query() method will send the DVM:SOUrce? query.
  • Using the .verify(value) method will send the DVM:SOUrce? query and raise an AssertionError if the returned value does not match value.
  • Using the .write(value) method will send the DVM:SOUrce value command.
SCPI Syntax 
- DVM:SOUrce {CH<x>}
- DVM:SOUrce?
Info
  • CH<x> specify which channel to use as the source for the DVM.

DvmTrigger

Bases: SCPICmdRead

The DVM:TRIGger command tree.

Usage
  • Using the .query() method will send the DVM:TRIGger? query.
  • Using the .verify(value) method will send the DVM:TRIGger? query and raise an AssertionError if the returned value does not match value.
Properties
  • .frequency: The DVM:TRIGger:FREQuency command tree.

frequency property 

frequency: DvmTriggerFrequency

Return the DVM:TRIGger:FREQuency command tree.

Usage
  • Using the .query() method will send the DVM:TRIGger:FREQuency? query.
  • Using the .verify(value) method will send the DVM:TRIGger:FREQuency? query and raise an AssertionError if the returned value does not match value.
Sub-properties
  • .counter: The DVM:TRIGger:FREQuency:COUNTer command.

DvmTriggerFrequency

Bases: SCPICmdRead

The DVM:TRIGger:FREQuency command tree.

Usage
  • Using the .query() method will send the DVM:TRIGger:FREQuency? query.
  • Using the .verify(value) method will send the DVM:TRIGger:FREQuency? query and raise an AssertionError if the returned value does not match value.
Properties
  • .counter: The DVM:TRIGger:FREQuency:COUNTer command.

counter property 

counter: DvmTriggerFrequencyCounter

Return the DVM:TRIGger:FREQuency:COUNTer command.

Description
  • This command sets or queries the state of the trigger frequency counter readout in the trigger badge.
Usage
  • Using the .query() method will send the DVM:TRIGger:FREQuency:COUNTer? query.
  • Using the .verify(value) method will send the DVM:TRIGger:FREQuency:COUNTer? query and raise an AssertionError if the returned value does not match value.
  • Using the .write(value) method will send the DVM:TRIGger:FREQuency:COUNTer value command.
SCPI Syntax 
- DVM:TRIGger:FREQuency:COUNTer {ON|OFF|1|0}
- DVM:TRIGger:FREQuency:COUNTer?
Info
  • ON turns on the trigger frequency counter for the Digital Voltmeter.
  • OFF turns it off.
  • 1 turns on the trigger frequency counter for the Digital Voltmeter.
  • 0 turns it off.

DvmTriggerFrequencyCounter

Bases: SCPICmdWrite, SCPICmdRead

The DVM:TRIGger:FREQuency:COUNTer command.

Description
  • This command sets or queries the state of the trigger frequency counter readout in the trigger badge.
Usage
  • Using the .query() method will send the DVM:TRIGger:FREQuency:COUNTer? query.
  • Using the .verify(value) method will send the DVM:TRIGger:FREQuency:COUNTer? query and raise an AssertionError if the returned value does not match value.
  • Using the .write(value) method will send the DVM:TRIGger:FREQuency:COUNTer value command.
SCPI Syntax 
- DVM:TRIGger:FREQuency:COUNTer {ON|OFF|1|0}
- DVM:TRIGger:FREQuency:COUNTer?
Info
  • ON turns on the trigger frequency counter for the Digital Voltmeter.
  • OFF turns it off.
  • 1 turns on the trigger frequency counter for the Digital Voltmeter.
  • 0 turns it off.