Ivi.Dmm.Interop IVI DMM class-compliant root interface Opens the I/O session to the instrument. Driver methods and properties that access the instrument are only accessible after Initialize is called. Initialize optionally performs a Reset and queries the instrument to validate the instrument model. An IVI logical name or an instrument specific string that identifies the address of the instrument, such as a VISA resource descriptor string. Specifies whether to verify the ID of the instrument. Specifies whether to reset the instrument. The user can use the OptionsString parameter to specify the initial values of certain IVI inherent attributes for the session. The format of an assignment in the OptionsString parameter is "Name=Value", where Name is one of: RangeCheck, QuerytInstrStatus, Cache, Simulate, RecordCoercions, InterchangeCheck, or DriverSetup. Value is either true or false except for DriverSetup. If the Options String parameter contains an assignment for the Driver Setup attribute, the Initialize function assumes that everything following "DriverSetup=" is part of the assignment. Closes the I/O session to the instrument. Driver methods and properties that access the instrument are not accessible after Close is called. Configures the Function, Range, and Resolution properties. If the value of the Range parameter is Auto Range On, then the Resolution parameter is ignored. Determines the units for the Range and Resolution Absolute parameters, and the measurement values that are returned by the Read, Read Multiple Point, Fetch, and Fetch Multiple Point methods. The measurement range. Positive values represent the absolute value of the maximum measurement expected. The driver coerces this value to the appropriate range for the instrument. Negative values represent the Auto Range mode. The measurement resolution in absolute units. Pointer to the IIviDriverOperation interface Pointer to the IIviDriverIdentity interface Pointer to the IIviDriverUtility interface Initialized is True between a successful call to the Initialize method and a successful call to the Close method, and False at all other times. The measurement function. This property determines the units for Range and Resolution and the values returned by the Read, Read Multiple Point, Fetch, and Fetch Multiple Point methods. The measurement range, coerced by the driver to the appropriate range for the instrument. Positive values set the absolute value of the maximum measurement expected. Negative values set Auto Range mode. Units are determined by Function. The measurement resolution in absolute units. Units are determined by Function. Pointer to the class-compliant IIviDmmAc interface Pointer to the class-compliant IIviDmmAdvanced interface Pointer to the class-compliant IIviDmmFrequency interface Pointer to the class-compliant IIviDmmMeasurement interface Pointer to the class-compliant IIviDmmTemperature interface Pointer to the class-compliant IIviDmmTrigger interface IVI DMM class-compliant AC interface Configures the FrequencyMax and FrequencyMin properties for DMMs that take AC voltage or AC current measurements. The minimum frequency component of the input signal for AC measurements. The maximum frequency component of the input signal for AC measurements. The maximum frequency component of the input signal for AC measurements. The value of this property affects instrument behavior only when the Function property is set to an AC voltage or AC current measurement. The minimum frequency component of the input signal for AC measurements. The value of this property affects instrument behavior only when the Function property is set to an AC voltage or AC current measurement. IVI DMM class-compliant advanced features interface The actual range that the DMM is currently using, even if it is auto-ranging. The measurement aperture time (also known as integration time) based on the present configuration. Units are specified by the property ApertureTimeUnits. The units for the ApertureTime property. The auto-zero mode. When the auto-zero mode is enabled, the DMM internally disconnects the input signal and takes a Zero Reading. The DMM then subtracts the Zero Reading from the measurement. The power line frequency in Hertz. IVI DMM class-compliant frequency interface The expected maximum voltage level of the input signal for frequency and period measurements. Positive values set the manual range. Negative values set Auto Range mode. The units are specified in Volts RMS. IVI DMM class-compliant measurement interface Initiates a measurement. When this method executes, the DMM leaves the idle state and waits for a trigger. Aborts a previously initiated measurement and returns the DMM to the idle state. Returns the measured value from a measurement that the Initiate method initiates. If an overrange condition occurs, the value contains IEEE NaN and the method returns an overrange error. The maximum time allowed for the measurement to complete in milliseconds. May also be a value defined in IviDmmMaxTimeEnum. Measurement value. Returns an array of values from a measurement that the Initiate method initiates. If an overrange condition occurs, the corresponding element of the array contains IEEE NaN and the method returns an overrange error. The maximum time allowed for the measurement to complete in milliseconds. May also be a value defined in IviDmmMaxTimeEnum. Array of measured values. Initiates a measurement, waits for the DMM to return to the idle state, and returns the measured value. If an overrange condition occurrs, the value contains IEEE NaN and the method returns an overrange error. The maximum time allowed for the measurement to complete in milliseconds. May also be a value defined in IviDmmMaxTimeEnum. Measurement value. Initiates a measurement, waits for the DMM to return to the idle state, and returns an array of values. If an overrange condition occurs, the corresponding element of the array contains IEEE NaN and the method returns an overrange error. The maximum time allowed for the measurement to complete in milliseconds. May also be a value defined in IviDmmMaxTimeEnum. Array of measured values. Sends a software trigger, which causes the DMM to take a measurement. Takes a measurement value obtained from one of the Read or Fetch methods and determines if the value is a valid measurement value or a value indicating that an overrange condition occurred. The measurement value from one of the Read or Fetch functions. True if the measurement value indicates an overrange condition and false otherwise. IVI DMM class-compliant temperature interface The type of device used to measure the temperature. This property affects instrument behavior only when Function is set to a temperature measurement. Pointer to the class-compliant IIviDmmRtd interface Pointer to the class-compliant IIviDmmThermocouple interface Pointer to the class-compliant IIviDmmThermistor interface IVI DMM class-compliant RTD interface Configures the Alpha and Resistance parameters for a resistance temperature device. The alpha parameter for a resistance temperature device (RTD). The R0 parameter (resistance) for a resistance temperature device (RTD) also known as the RTD reference value. The alpha parameter for a resistance temperature device (RTD). Applies only when the Temperature Transducer Type is set to 2 Wire RTD or 4 Wire RTD. The R0 parameter (resistance) for a resistance temperature device (RTD). Also known as the RTD reference value. Applies only when the Temperature Transducer Type is set to 2 Wire RTD or 4 Wire RTD. IVI DMM class-compliant thermocouple interface Configures the thermocouple Type and RefJunctionType properties of a thermocouple. Applies only when the Temperature Transducer Type is Thermocouple. The type of thermocouple used to measure the temperature. The type of reference junction used in the reference junction compensation. The external reference junction temperature when a fixed reference junction thermocouple is used to measure temperature, or the thermocouple junction temperature of an instrument without an internal temperature sensor, in degrees Celcius. The type of reference junction to be used in the reference junction compensation of a thermocouple measurement. Applies only when the Temperature Transducer Type is Thermocouple. The type of thermocouple used to measure the temperature. Applies only when the Temperature Transducer Type is Thermocouple. IVI DMM class-compliant thermistor interface The resistance of the thermistor in Ohms. Applies only when the Temperature Transducer Type property is Thermistor. IVI DMM class-compliant trigger interface Configures the trigger Source and Delay properties. Trigger source. The length of time between when the DMM receives the trigger and when it takes a measurement. Use positive values to set the trigger delay in seconds. Negative values are reserved for the auto delay mode. The polarity of the external trigger slope, which determines whether the DMM triggers on either the rising or the falling edge of the external trigger source. The interval between the time when the DMM receives the trigger and the time when it takes a measurement. Positive values set the trigger delay in seconds. Negative values set auto delay mode. The trigger source. Pointer to the class-compliant IIviDmmMultipoint interface IVI DMM class-compliant multipoint interface Configures multipoint trigger Count, SampleCount, SampleTrigger and SampleInterval properties. The number of triggers the DMM accepts before it returns to the idle state. The number of measurements the DMM takes each time it receives a trigger. The sample trigger source. If the value of the Sample Count is greater than 1, the DMM enters the Wait-For-Sample-Trigger state after taking a single measurement. When the event specified by this parameter occurs, the DMM exits the Wait-For-Sample-Trigger state and takes the next measurement. The interval between samples in seconds. The destination of the measurement-complete signal generated after each measurement. The number of triggers the DMM accepts before it returns to the idle state. The number of measurements the DMM takes each time it receives a trigger. The interval between samples in seconds. Applies only when Sample Count is greater than 1 and Sample Trigger is Interval. The sample trigger source. If the value of the Sample Count is greater than 1, the DMM enters the Wait-For-Sample-Trigger state after taking a single measurement. When a sample trigger occurs, the DMM takes the next measurement. IVI DMM class-compliant values for Function Sets the DMM to measure DC voltage. Sets the DMM to measure AC voltage. Sets the DMM to measure DC current.. Sets the DMM to measure AC current. Sets the DMM to measure 2-wire resistance. Sets the DMM to measure 4-wire resistance. Sets the DMM to measure AC plus DC voltage. Sets the DMM to measure AC plus DC current. Sets the DMM to measure frequency. Sets the DMM to measure period. Sets the DMM to measure temperature. IVI DMM class-compliant values for ApertureTimeUnits Units for the value returned by Aperture Time are seconds. Units for the value returned by Aperture Time are Power Line Cycles. IVI DMM class-compliant values for AutoZero Disables the auto-zero feature. The DMM to take a Zero Reading for each measurement. The DMM takes one a Zero Reading immediately and then disables the auto-zero feature. IVI DMM class-compliant values for temperature TransducerType Sets the DMM to measure temperature using a thermocouple. Sets the DMM to measure temperature using a thermistor. Sets the DMM to measure temperature using a 2-wire temperature resistance device. Sets the DMM to measure temperature using a 4-wire temperature resistance device. IVI DMM class-compliant values for thermocouple Type Sets the DMM to measure temperature from a B-type thermocouple. Sets the DMM to measure temperature from a C-type thermocouple. Sets the DMM to measure temperature from a D-type thermocouple. Sets the DMM to measure temperature from a E-type thermocouple. Sets the DMM to measure temperature from a G-type thermocouple. Sets the DMM to measure temperature from a J-type thermocouple. Sets the DMM to measure temperature from a K-type thermocouple. Sets the DMM to measure temperature from a N-type thermocouple. Sets the DMM to measure temperature from a R-type thermocouple. Sets the DMM to measure temperature from a S-type thermocouple. Sets the DMM to measure temperature from a T-type thermocouple. Sets the DMM to measure temperature from a U-type thermocouple. Sets the DMM to measure temperature from a V-type thermocouple. IVI DMM class-compliant values for thermocouple RefJunctionType Sets the DMM to use an internal sensor at the thermocouple junction for the junction compensation. Sets the DMM to use an internal sensor at the thermocouple junction for the junction compensation. IVI DMM class-compliant values for trigger Source The DMM exits the Wait-For-Trigger state immediately after entering. It does not wait for a trigger of any kind. The DMM exits the Wait-For-Trigger state when a trigger occurs on the external trigger input. The DMM exits the Wait-For-Trigger state when the Send Software Trigger function executes. The DMM exits the Wait-For-Trigger state when it receives a trigger on TTL0. The DMM exits the Wait-For-Trigger state when it receives a trigger on TTL1. The DMM exits the Wait-For-Trigger state when it receives a trigger on TTL2. The DMM exits the Wait-For-Trigger state when it receives a trigger on TTL3. The DMM exits the Wait-For-Trigger state when it receives a trigger on TTL4. The DMM exits the Wait-For-Trigger state when it receives a trigger on TTL5. The DMM exits the Wait-For-Trigger state when it receives a trigger on TTL6. The DMM exits the Wait-For-Trigger state when it receives a trigger on TTL7. The DMM exits the Wait-For-Trigger state when it receives a trigger on ECL0. The DMM exits the Wait-For-Trigger state when it receives a trigger on ECL1. The DMM exits the Wait-For-Trigger state when it receives a trigger on the PXI Star trigger bus. The DMM exits the Wait-For-Trigger state when it receives a trigger on RTSI0. The DMM exits the Wait-For-Trigger state when it receives a trigger on RTSI1. The DMM exits the Wait-For-Trigger state when it receives a trigger on RTSI2. The DMM exits the Wait-For-Trigger state when it receives a trigger on RTSI3. The DMM exits the Wait-For-Trigger state when it receives a trigger on RTSI4. The DMM exits the Wait-For-Trigger state when it receives a trigger on RTSI5. The DMM exits the Wait-For-Trigger state when it receives a trigger on RTSI6. IVI DMM class-compliant values for trigger Slope Sets the trigger event to occur on the rising edge of the trigger pulse. Sets the trigger event to occur on the rising edge of the trigger pulse. IVI DMM class-compliant values for multipoint SampleTrigger The DMM exits the Wait-For-Sample-Trigger state immediately after entering. It does not wait for a trigger of any kind. The DMM exits the Wait-For-Sample-Trigger state when a trigger occurs on the external trigger input. The DMM exits the Wait-For-Sample-Trigger state when the Send Software Trigger function executes. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on TTL0. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on TTL1. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on TTL2. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on TTL3. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on TTL4. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on TTL5. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on TTL6. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on TTL7. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on ECL0. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on ECL1. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on the PXI Star trigger bus. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on RTSI0. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on RTSI1. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on RTSI2. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on RTSI3. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on RTSI4. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on RTSI5. The DMM exits the Wait-For-Sample-Trigger state when it receives a trigger on RTSI6. The DMM exits the Wait-For-Sample-Trigger state when the length of time specified by the Sample Interval attribute elapses. IVI DMM class-compliant values for multipoint MeasurementComplete The measurement complete signal is not routed. Routes the measurement complete signal to the external connector. Routes the measurement complete signal to TTL0. Routes the measurement complete signal to TTL1. Routes the measurement complete signal to TTL2. Routes the measurement complete signal to TTL3. Routes the measurement complete signal to TTL4. Routes the measurement complete signal to TTL5. Routes the measurement complete signal to TTL6. Routes the measurement complete signal to TTL7. Routes the measurement complete signal to ECL0. Routes the measurement complete signal to ECL1. Routes the measurement complete signal to the PXI Star trigger bus. Routes the measurement complete signal to RTSI0. Routes the measurement complete signal to RTSI1. Routes the measurement complete signal to RTSI2. Routes the measurement complete signal to RTSI3. Routes the measurement complete signal to RTSI4. Routes the measurement complete signal to RTSI5. Routes the measurement complete signal to RTSI6. IVI DMM class defined HRESULTS The trigger source is not set to software trigger. Max Time Exceeded Over Range IVI DMM class-compliant AutoRange values that can be used for Range Sets the DMM to calculate the range before each measurement automatically. Disables auto-ranging. Sets the DMM to calculate the range before the next measurement and then disable auto-ranging. IVI DMM class-compliant values for frequency VoltageRange Sets the DMM to calculate the frequency voltage range before each measurement automatically. Disables auto-ranging. IVI DMM class-compliant values for MaxTime Wait indefinitely for the measurement to complete. Return immediately. If no valid measurement value exists, return an error. IVI DMM class-compliant values for trigger Delay Sets the DMM to calculate the trigger delay before each measurement. Stops the DMM from calculating the trigger delay.