February 2019

Use the NI-DMM properties to access advanced configuration options for digital multimeter applications.

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Active Channel
Specifies the channel name used to access all subsequent channel-based properties in this property node. Set the channel before setting channel-based properties. Pass a name that the instrument driver defines or a virtual channel name configured in MAX.
Configuration:Function
Specifies the measurement function. If you are setting this property directly, you must also set the Operation Mode property, which controls whether the DMM takes standard single or multipoint measurements, or acquires a waveform. If you are programming properties directly, you must set the Operation Mode property before setting other configuration properties. If the Operation Mode property is set to Waveform Mode, the only valid function types are Waveform Voltage and Waveform Current. Set the Operation Mode property to IVIDMM Mode to set all other function values.
Configuration:Range
Specifies the measurement range. Use positive values to represent the absolute value of the maximum expected measurement. The value is in units appropriate for the current value of the Function property. For example, if the Function property is set to DC Volts, the units are volts.
Configuration:Auto Range Value
Specifies the value of the range. If auto ranging is enabled, shows the actual value of the active range. The value of this property is set during a read operation.
Configuration:Digits Resolution
Specifies the measurement resolution in digits. Setting this property to higher values increases the measurement accuracy. Setting this property to lower values increases the measurement speed.
Configuration:Absolute Resolution
Specifies the measurement resolution in absolute units. Setting this property to higher values increases the measurement accuracy. Setting this property to lower values increases the measurement speed.
Configuration:Measurement Options:Input Resistance
Specifies the input resistance of the instrument.
Configuration:Measurement Options:Auto Zero
Specifies the AutoZero mode.
Configuration:Measurement Options:ADC Calibration
For the NI 4080/4081/4082 and NI 4070/4071/4072, specifies the ADC calibration mode.
Configuration:Measurement Options:Powerline Frequency
Specifies the powerline frequency. The NI 4065, NI 4070/4071/4072, and NI 4080/4081/4082 use this value to select timebases for setting the Aperture Time property in powerline cycles.
Configuration:Measurement Options:Offset Compensated Ohms
For the NI 4080/4081/4082 and NI 4070/4071/4072, enables or disables offset compensated ohms.
Configuration:Measurement Options:Current Source
Specifies the current source provided during diode measurements.
Configuration:Measurement Options:Shunt Value
For the NI 4050 only, specifies the shunt resistance value.
Configuration:Measurement Options:DC Noise Rejection
Specifies the DC noise rejection mode.
Configuration:Measurement Options:Min Frequency
Specifies the minimum frequency component of the input signal for AC measurements. This property affects the DMM only when you set the Function property to AC measurements. The valid range is 1 Hz-300 kHz for the NI 4080/4081/4082 and NI 4070/4071/4072 and 10 Hz-100 Hz for the NI 4065.
Configuration:Measurement Options:Max Frequency
Specifies the maximum frequency component of the input signal for AC measurements. This property is used only for error checking and verifies that the value of this parameter is less than the maximum frequency of the device. This property affects the DMM only when you set the Function property to AC measurements.
Configuration:Measurement Options:Frequency Voltage Range
For the NI 4080/4081/4082 and NI 4070/4071/4072, specifies the maximum amplitude of the input signal for frequency measurements.
Configuration:Measurement Options:Frequency Voltage Auto Range Value
For the NI 4080/4081/4082 and NI 4070/4071/4072, specifies the value of the frequency voltage range. If auto ranging is enabled, shows the actual value of the active frequency voltage range. If not Auto Ranging, the value is the same as that of the Frequency Voltage Range property.
Configuration:Measurement Options:Temperature:Transducer Type
Specifies the transducer type.
Configuration:Measurement Options:Temperature:Thermocouple:Thermocouple Type
Specifies the thermocouple type.
Configuration:Measurement Options:Temperature:Thermocouple:Reference Junction Type
Specifies the thermocouple reference junction type.
Configuration:Measurement Options:Temperature:Thermocouple:Fixed Reference Junction
Specifies the value of the fixed reference junction temperature for a thermocouple in degrees Celsius.
Configuration:Measurement Options:Temperature:Resistance Temperature Detector:RTD Type
Specifies the RTD type.
Configuration:Measurement Options:Temperature:Resistance Temperature Detector:RTD Resistance
Specifies the RTD resistance at 0 degrees Celsius.
Configuration:Measurement Options:Temperature:Resistance Temperature Detector:RTD A
Specifies the Callendar-Van Dusen A coefficient for RTD scaling when the RTD Type property is set to Custom.
Configuration:Measurement Options:Temperature:Resistance Temperature Detector:RTD B
Specifies the Callendar-Van Dusen B coefficient for RTD scaling when the RTD Type property is set to Custom.
Configuration:Measurement Options:Temperature:Resistance Temperature Detector:RTD C
Specifies the Callendar-Van Dusen C coefficient for RTD scaling when the RTD Type property is set to Custom.
Configuration:Measurement Options:Temperature:Thermistor:Thermistor Type
Specifies the thermistor type.
Configuration:Measurement Options:Temperature:Thermistor:Thermistor A
Specifies the Steinhart-Hart A coefficient for thermistor scaling when the Thermistor Type property is set to Custom.
Configuration:Measurement Options:Temperature:Thermistor:Thermistor B
Specifies the Steinhart-Hart B coefficient for thermistor scaling when the Thermistor Type property is set to Custom.
Configuration:Measurement Options:Temperature:Thermistor:Thermistor C
Specifies the Steinhart-Hart C coefficient for thermistor scaling when the Thermistor Type property is set to Custom.
Configuration:Measurement Options:Capacitance and Inductance:Number of LC Measurements To Average
For the NI 4082 and NI 4072 only, specifies the number of LC measurements that are averaged to produce one reading.
Configuration:Measurement Options:Capacitance and Inductance:Cable Compensation Type
For the NI 4081 and NI 4072 only, specifies the type of cable compensation that is applied to the current capacitance or inductance measurement for the current range.
Configuration:Measurement Options:Capacitance and Inductance:Short Cable Compensation Values:Reactance
For the NI 4082 and NI 4072 only, represents the reactive part (reactance) of the short cable compensation. The valid range is any real number >0. The default value (-1) indicates that compensation has not taken place.
Configuration:Measurement Options:Capacitance and Inductance:Short Cable Compensation Values:Resistance
For the NI 4082 and NI 4072 only, represents the active part (resistance) of the short cable compensation. The valid range is any real number >0. The default value (-1) indicates that compensation has not taken place.
Configuration:Measurement Options:Capacitance and Inductance:Open Cable Compensation Values:Susceptance
For the NI 4082 and NI 4072 only, specifies the reactive part (susceptance) of the open cable compensation. The valid range is any real number >0. The default value (-1.0) indicates that compensation has not taken place.
Configuration:Measurement Options:Capacitance and Inductance:Open Cable Compensation Values:Conductance
For the NI 4082 and NI 4072 only, specifies the active part (conductance) of the open cable compensation. The valid range is any real number >0. The default value (-1.0) indicates that compensation has not taken place.
Configuration:Measurement Options:Capacitance and Inductance:Advanced:Calculation Model
For the NI 4082 and NI 4072 only, specifies the type of algorithm that the measurement processing uses for capacitance and inductance measurements.
Configuration:Measurement Options:Capacitance and Inductance:Advanced:DC Bias
For the NI 4082 and NI 4072 only, controls the available DC bias for capacitance measurements.
Configuration:Advanced:Aperture Time
Specifies the measurement aperture time for the current configuration. Aperture time is specified in units set by the Aperture Time Units property. To override the default aperture, set this property to the desired aperture time after calling niDMM Config Measurement. To return to the default, set this property to Aperture Time Auto (-1).
Configuration:Advanced:Aperture Time Units
Specifies the units of aperture time for the current configuration.
Configuration:Advanced:Settle Time
Specifies the settling time in seconds. Use this property to override the default settling time. To return to the default, set this property to Auto (-1).
Configuration:Advanced:Number Of Averages
Specifies the number of averages to perform in a measurement. For the NI 4080/4081/4082 and NI 4070/4071/4072, this property applies only when the aperture time is not set to Auto and Auto Zero is ON. The Number of Averages Property will be ignored otherwise. The default is 4 for 7 1/2 digits; otherwise, the default is 1.
Configuration:Advanced:Operation Mode
Specifies how the DMM acquires data.
Multi Point Acquisition:Sample Count
Specifies the number of measurements the DMM takes each time it receives a trigger in a multiple point acquisition. Setting Sample Count to 0 causes the conditional statement "Measurements equal to Sample Count" to always evaluate to False, and causes the DMM to continue taking measurements in the inner loop.
Multi Point Acquisition:Trigger Count
Specifies the number of triggers the DMM receives before returning to the Idle state. This property can be set to any positive ViInt32 value for the NI 4065, NI 4070/4071/4072, and NI 4080/4081/4082.
Multi Point Acquisition:Sample Trigger
Specifies the sample trigger source.
Multi Point Acquisition:Sample Trig Slope
Specifies the edge of the signal from the specified sample trigger source on which the DMM is triggered.
Multi Point Acquisition:Sample Interval
Specifies the amount of time in seconds the DMM waits between measurement cycles. This property only applies when the Sample Trigger property is set to INTERVAL. The default value (-1) ensures that the DMM settles for a recommended time, which is the same as using an immediate trigger.
Multi Point Acquisition:Sample Delay Mode
Specifies when the Sample Interval property is used. Set this property before calling niDMM Configure Multi Point if you configure the properties for multipoint measurements using the niDMM Configure Multi Point VI.
Multi Point Acquisition:Advanced:Buffer Size
Specifies the size in samples of the internal data buffer. Maximum size is 134,217,727 (0X7FFFFFF) samples. When set to Auto (-1), NI-DMM chooses the buffer size.
Multi Point Acquisition:Advanced:Latency
Specifies the number of measurements transferred at a time from the instrument to an internal buffer. When set to Auto (-1), NI-DMM chooses the transfer size.
Waveform Acquisition:Waveform Points
For the NI 4080/4081/4082 and NI 4070/4071/4072, specifies the number of points to acquire in a waveform acquisition.
Waveform Acquisition:Waveform Rate
Specifies the rate of the waveform acquisition in samples per second (S/s). The valid rate is calculated by dividing 1,800,000 by an integer divisor, and the rate falls between 10 and 1,800,000 samples per second. The waveform rate is coerced upwards to the next valid rate. The default value is 1,800,000 samples per second. Not supported by NI 4065.
Waveform Acquisition:Waveform Coupling
For the NI 4080/4081/4082 and NI 4070/4071/4072 only, specifies the coupling during a waveform acquisition.
Trigger:Trigger Source
Specifies the trigger source. When niDMM Initiate is called, the DMM waits for the trigger specified with this property. After it receives the trigger, the DMM waits the length of time specified with the Trigger Delay property. The DMM then takes a measurement.
Trigger:Trigger Slope
Specifies the edge of the signal from the specified trigger source on which the DMM is triggered.
Trigger:Trigger Delay
Specifies the time (in seconds) that the DMM waits after it has received a trigger before taking a measurement. The default value is Auto Delay (-1), which means that the DMM waits an appropriate settling time before taking the measurement.
Trigger:Measurement Complete Dest
Specifies the destination of the measurement complete (MC) signal.
Trigger:Measurement Destination Slope
Specifies the polarity of the generated measurement complete signal.
Inherent IVI Attributes:User Options:Simulate
Specifies whether to simulate instrument driver I/O operations. If simulation is enabled, instrument driver functions perform range checking and call IVI Get and Set VIs, but they do not perform instrument I/O. For output parameters that represent instrument data, the instrument driver VIs return calculated values. The default value is FALSE (0). Use niDMM Initialize With Options to override the default setting.
Inherent IVI Attributes:User Options:Driver Setup
This property indicates the Driver Setup string that the user specified when initializing the driver. Some cases exist where the end-user must specify instrument driver options at initialization time. An example of this is specifying a particular instrument model from among a family of instruments that the driver supports. This is useful when using simulation. The end-user can specify driver-specific options through the Driver Setup keyword in the Option String parameter in niDMM Initialize With Options. If the user does not specify a Driver Setup string, this property returns an empty string.
Inherent IVI Attributes:User Options:Range Check
Specifies whether to validate property values and VI parameters. If enabled, the instrument driver validates the parameter values passed to driver VIs. Range checking parameters is very useful for debugging. After the user program is validated, you can set this property to FALSE (0) to disable range checking and maximize performance. The default value is TRUE (1). Use niDMM Initialize With Options to override the default setting.
Inherent IVI Attributes:User Options:Query Instrument Status
Specifies whether the instrument driver queries the instrument status after each operation. Querying the instrument status is very useful for debugging. After the user program is validated, this property can be set to FALSE (0) to disable status checking and maximize performance. The instrument driver can choose to ignore status checking for particular properties regardless of the setting of this property. The default value is TRUE (1). Use niDMM Initialize With Options to override the default setting.
Inherent IVI Attributes:User Options:Cache
Specifies whether to cache the value of properties. When caching is enabled, the instrument driver keeps track of the current instrument settings and avoids sending redundant commands to the instrument. Thus, it significantly increases execution speed. The instrument driver can choose to always cache or to never cache particular properties regardless of the setting of this property. The default value is TRUE (1). Use niDMM Initialize With Options to override the default setting.
Inherent IVI Attributes:User Options:Record Value Coercions
Specifies whether the IVI engine keeps a list of the value coercions it makes for ViInt32 and ViReal64 properties. The default value is FALSE (0). Use niDMM Initialize With Options to override the default setting. Use niDMM Get Next Coercion Record to extract and delete the oldest coercion record from the list.
Inherent IVI Attributes:User Options:Interchange Check
Specifies whether to perform interchangeability checking and log interchangeability warnings when you call niDMM VIs. Interchangeability warnings indicate that using your application with a different instrument might cause different behavior. Use niDMM Get Next Interchange Warning to extract interchange warnings. Use niDMM Clear Interchange Warnings to clear the list of interchangeability warnings without reading them. Interchangeability checking examines the properties in a capability group only if you specify a value for at least one property within that group. Interchangeability warnings can occur when a property affects the behavior of the instrument and you have not set that property, or the property has been invalidated since you set it.
Inherent IVI Attributes:Instrument Capabilities:Channel Count
Indicates the number of channels that the specific instrument driver supports. For each property for which the IVI_VAL_MULTI_CHANNEL flag property is set, the IVI engine maintains a separate cache value for each channel.
Inherent IVI Attributes:Instrument Capabilities:Specific Driver Prefix
The prefix for the specific instrument driver. The name of each user-callable VI in this driver starts with this prefix. The prefix can be up to a maximum of eight characters.
Inherent IVI Attributes:Instrument Identification:Instrument Manufacturer
A string containing the manufacturer of the instrument.
Inherent IVI Attributes:Instrument Identification:Instrument Model
A string containing the instrument model.
Inherent IVI Attributes:Instrument Identification:Instrument Product ID
The PCI product ID.
Inherent IVI Attributes:Instrument Identification:Instrument Firmware Revision
A string containing the instrument firmware revision number.
Inherent IVI Attributes:Instrument Identification:Instrument Serial Number
A string containing the serial number of the instrument. This property corresponds to the serial number label that is attached to most products.
Inherent IVI Attributes:Specific Driver Capabilities:Supported Instrument Models
A string containing the instrument models supported by the specific driver.
Inherent IVI Attributes:Specific Driver Capabilities:Group Capabilities
A string containing the capabilities and extension groups supported by the specific driver.
Inherent IVI Attributes:Specific Driver Identification:Specific Driver Vendor
A string containing the vendor of the specific driver.
Inherent IVI Attributes:Specific Driver Identification:Specific Driver Class Spec Major Version
The major version number of the class specification for the specific driver.
Inherent IVI Attributes:Specific Driver Identification:Specific Driver Class Spec Minor Version
The minor version number of the class specification for the specific driver.
Inherent IVI Attributes:Specific Driver Identification:Specific Driver Description
A string containing a description of the specific driver.
Inherent IVI Attributes:Version Info:Specific Driver Major Version
Returns the major version number of this instrument driver.
Inherent IVI Attributes:Version Info:Specific Driver Minor Version
Returns the minor version number of this instrument driver.
Inherent IVI Attributes:Version Info:Specific Driver Revision
A string that contains additional version information about this instrument driver.
Inherent IVI Attributes:Advanced Session Information:Logical Name
A string containing the logical name of the instrument.
Inherent IVI Attributes:Advanced Session Information:I/O Resource Descriptor
A string containing the resource descriptor of the instrument.
Obsolete:Inherent IVI Attributes:Error Info:Primary Error
A code that describes the first error that occurred since the last call to niDMM Get Error for the session. The value follows the VXIplug&play conventions. A negative value describes an error condition. A positive value describes a warning condition. A zero indicates that no error or warning occurred. The error and warning values can be status codes defined by IVI, VISA, class drivers, or specific drivers.
Obsolete:Inherent IVI Attributes:Error Info:Secondary Error
An optional code that provides additional information concerning the primary error condition. The error and warning values can be status codes defined by IVI, VISA, class drivers, or specific drivers. Zero indicates no additional information.
Obsolete:Inherent IVI Attributes:Error Info:Error Elaboration
An optional string that contains additional information concerning the primary error condition.
Obsolete:Inherent IVI Attributes:Version Info:Engine Major Version
The major version number of the IVI engine.
Obsolete:Inherent IVI Attributes:Version Info:Engine Minor Version
The minor version number of the IVI engine.
Obsolete:Inherent IVI Attributes:Version Info:Engine Revision
A string that contains additional version information about the IVI engine.
Obsolete:Misc:IDQuery response
A string containing the type of instrument used in the current session.

NI-DMM LabVIEW VI Reference

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