The DAQmx Device properties return information about devices installed in your system.

Active Device
Specifies the device from which to retrieve properties.
Bus:Number of DMA Channels
Indicates the number of DMA channels on the device.
Chassis:Module Device Names
Indicates an array containing the names of the modules in the chassis.
Device Is Simulated
Indicates if the device is a simulated device.
I/O Type:Analog Input:Bridge:Ranges
Indicates pairs of input voltage ratio ranges, in volts per volt, supported by devices that acquire using ratiometric measurements. Each pair consists of the low value followed by the high value.
I/O Type:Analog Input:Charge:Ranges
Indicates in coulombs pairs of input charge ranges for the device. Each pair consists of the low value followed by the high value.
I/O Type:Analog Input:Couplings
Indicates the coupling types supported by this device.
I/O Type:Analog Input:Current:Internal Excitation:Discrete Values
Indicates the set of discrete internal current excitation values supported by this device.
I/O Type:Analog Input:Current:Ranges
Indicates the pairs of current input ranges supported by this device. Each pair consists of the low value, followed by the high value.
I/O Type:Analog Input:Filter:Analog Low Pass:Cutoff Frequency:Discrete Values
Indicates the set of discrete lowpass cutoff frequencies supported by this device. If the device supports ranges of lowpass cutoff frequencies, use AI.Lowpass.CutoffFreq.RangeVals to determine supported frequencies.
I/O Type:Analog Input:Filter:Analog Low Pass:Cutoff Frequency:Range Values
Indicates pairs of lowpass cutoff frequency ranges supported by this device. Each pair consists of the low value, followed by the high value. If the device supports a set of discrete lowpass cutoff frequencies, use AI.Lowpass.CutoffFreq.DiscreteVals to determine the supported frequencies.
I/O Type:Analog Input:Filter:Digital Filter:Low Pass:Cutoff Frequency:Discrete Values
Indicates the set of discrete lowpass cutoff frequencies supported by this device. If the device supports ranges of lowpass cutoff frequencies, use AI.DigFltr.Lowpass.CutoffFreq.RangeVals to determine supported frequencies.
I/O Type:Analog Input:Filter:Digital Filter:Low Pass:Cutoff Frequency:Range Values
Indicates pairs of lowpass cutoff frequency ranges supported by this device. Each pair consists of the low value, followed by the high value. If the device supports a set of discrete lowpass cutoff frequencies, use AI.DigFltr.Lowpass.CutoffFreq.DiscreteVals to determine the supported frequencies.
I/O Type:Analog Input:Filter:Digital Filter:Types
Indicates the AI digital filter types supported by the device.
I/O Type:Analog Input:Frequency:Ranges
Indicates the pairs of frequency input ranges supported by this device. Each pair consists of the low value, followed by the high value.
I/O Type:Analog Input:Gains
Indicates the input gain settings supported by this device.
I/O Type:Analog Input:Measurement Types
Indicates the measurement types supported by the physical channels of the device. Refer to AI.MeasTypes for information on specific channels.
I/O Type:Analog Input:Physical Channels
Indicates an array containing the names of the analog input physical channels available on the device.
I/O Type:Analog Input:Resistance:Ranges
Indicates pairs of input resistance ranges, in ohms, supported by devices that have the necessary signal conditioning to measure resistances. Each pair consists of the low value followed by the high value.
I/O Type:Analog Input:Timing:Maximum Multiple Channel Rate
Indicates the maximum sampling rate for an analog input task from this device. To find the maximum rate for the task, take the minimum of AI.MaxSingleChanRate or the indicated sampling rate of this device divided by the number of channels to acquire data from (including cold-junction compensation and autozero channels).
I/O Type:Analog Input:Timing:Maximum Single Channel Rate
Indicates the maximum rate for an analog input task if the task contains only a single channel from this device.
I/O Type:Analog Input:Timing:Minimum Rate
Indicates the minimum rate for an analog input task on this device. NI-DAQmx returns a warning or error if you attempt to sample at a slower rate.
I/O Type:Analog Input:Timing:Number of Sample Timing Engines
Indicates the number of Analog Input sample timing engines supported by the device.
I/O Type:Analog Input:Timing:Number of Synchronization Pulse Sources
Indicates the number of Analog Input synchronization pulse sources supported by the device.
I/O Type:Analog Input:Timing:Sample Modes
Indicates sample modes supported by devices that support sample clocked analog input.
I/O Type:Analog Input:Timing:Simultaneous Sampling Supported
Indicates if the device supports simultaneous sampling.
I/O Type:Analog Input:Trigger:Trigger Usage
Indicates the triggers supported by this device for an analog input task.
I/O Type:Analog Input:Voltage:Internal Excitation:Discrete Values
Indicates the set of discrete internal voltage excitation values supported by this device. If the device supports ranges of internal excitation values, use AI.Voltage.IntExcit.RangeVals to determine supported excitation values.
I/O Type:Analog Input:Voltage:Internal Excitation:Range Values
Indicates pairs of internal voltage excitation ranges supported by this device. Each pair consists of the low value, followed by the high value. If the device supports a set of discrete internal excitation values, use AI.Voltage.IntExcit.DiscreteVals to determine the supported excitation values.
I/O Type:Analog Input:Voltage:Ranges
Indicates pairs of input voltage ranges supported by this device. Each pair consists of the low value, followed by the high value.
I/O Type:Analog Output:Current:Ranges
Indicates pairs of output current ranges supported by this device. Each pair consists of the low value, followed by the high value.
I/O Type:Analog Output:Gains
Indicates the output gain settings supported by this device.
I/O Type:Analog Output:Output Types
Indicates the generation types supported by the physical channels of the device. Refer to AO.OutputTypes for information on specific channels.
I/O Type:Analog Output:Physical Channels
Indicates an array containing the names of the analog output physical channels available on the device.
I/O Type:Analog Output:Timing:Maximum Rate
Indicates the maximum analog output rate of the device.
I/O Type:Analog Output:Timing:Minimum Rate
Indicates the minimum analog output rate of the device.
I/O Type:Analog Output:Timing:Number of Sample Timing Engines
Indicates the number of Analog Output sample timing engines supported by the device.
I/O Type:Analog Output:Timing:Number of Synchronization Pulse Sources
Indicates the number of Analog Output synchronization pulse sources supported by the device.
I/O Type:Analog Output:Timing:Sample Clock Supported
Indicates if the device supports the sample clock timing type for analog output tasks.
I/O Type:Analog Output:Timing:Sample Modes
Indicates sample modes supported by devices that support sample clocked analog output.
I/O Type:Analog Output:Trigger:Trigger Usage
Indicates the triggers supported by this device for analog output tasks.
I/O Type:Analog Output:Voltage:Ranges
Indicates pairs of output voltage ranges supported by this device. Each pair consists of the low value, followed by the high value.
I/O Type:Counter Input:Maximum Size
Indicates in bits the size of the counters on the device.
I/O Type:Counter Input:Maximum Timebase
Indicates in hertz the maximum counter timebase frequency.
I/O Type:Counter Input:Measurement Types
Indicates the measurement types supported by the physical channels of the device. Refer to CI.MeasTypes for information on specific channels.
I/O Type:Counter Input:Physical Channels
Indicates an array containing the names of the counter input physical channels available on the device.
I/O Type:Counter Input:Timing:Sample Clock Supported
Indicates if the device supports the sample clock timing type for counter input tasks.
I/O Type:Counter Input:Timing:Sample Modes
Indicates sample modes supported by devices that support sample clocked counter input.
I/O Type:Counter Input:Trigger:Trigger Usage
Indicates the triggers supported by this device for counter input tasks.
I/O Type:Counter Output:Maximum Size
Indicates in bits the size of the counters on the device.
I/O Type:Counter Output:Maximum Timebase
Indicates in hertz the maximum counter timebase frequency.
I/O Type:Counter Output:Output Types
Indicates the generation types supported by the physical channels of the device. Refer to CO.OutputTypes for information on specific channels.
I/O Type:Counter Output:Physical Channels
Indicates an array containing the names of the counter output physical channels available on the device.
I/O Type:Counter Output:Timing:Sample Clock Supported
Indicates if the device supports Sample Clock timing for counter output tasks.
I/O Type:Counter Output:Timing:SampleModes
Indicates sample modes supported by devices that support sample clocked counter output.
I/O Type:Counter Output:Trigger:Trigger Usage
Indicates the triggers supported by this device for counter output tasks.
I/O Type:Digital Input:Lines
Indicates an array containing the names of the digital input lines available on the device.
I/O Type:Digital Input:Ports
Indicates an array containing the names of the digital input ports available on the device.
I/O Type:Digital Input:Timing:Maximum Rate
Indicates the maximum digital input rate of the device.
I/O Type:Digital Input:Timing:Number of Sample Timing Engines
Indicates the number of Digital Input sample timing engines supported by the device.
I/O Type:Digital Input:Trigger:Trigger Usage
Indicates the triggers supported by this device for digital input tasks.
I/O Type:Digital Output:Lines
Indicates an array containing the names of the digital output lines available on the device.
I/O Type:Digital Output:Ports
Indicates an array containing the names of the digital output ports available on the device.
I/O Type:Digital Output:Timing:Maximum Rate
Indicates the maximum digital output rate of the device.
I/O Type:Digital Output:Timing:Number of Sample Timing Engines
Indicates the number of Digital Output synchronization pulse sources supported by the device.
I/O Type:Digital Output:Trigger:Trigger Usage
Indicates the triggers supported by this device for digital output tasks.
Identification:Accessory:Product Numbers
Indicates the unique hardware identification number for accessories connected to the device. Each array element corresponds to a connector. For example, index 0 corresponds to connector 0. The array contains 0 for each connector with no accessory connected.
Identification:Accessory:Product Types
Indicates the model names of accessories connected to the device. Each array element corresponds to a connector. For example, index 0 corresponds to connector 0. The array contains an empty string for each connector with no accessory connected.
Identification:Accessory:Serial Numbers
Indicates the serial number for accessories connected to the device. Each array element corresponds to a connector. For example, index 0 corresponds to connector 0. The array contains 0 for each connector with no accessory connected.
Identification:Carrier Serial Number
Indicates the serial number of the device carrier. This value is zero if the carrier does not have a serial number.
Identification:Device Serial Number
Indicates the serial number of the device. This value is zero if the device does not have a serial number.
Identification:FieldDAQ:Bank Device Names
Indicates an array containing the names of the banks in the FieldDAQ.
Identification:FieldDAQ:Device Name
Indicates the parent device which this bank is located in.
Identification:ID Pin:Memory Family Codes
Indicates the family code of the memory connected to each ID Pin. Each array element corresponds to an ID Pin. The array contains 0 for each ID Pin with no memory connected.
Identification:ID Pin:Memory Serial Numbers
Indicates the serial number of the memory connected to each ID Pin. Each array element corresponds to an ID Pin. The array contains an empty string for each ID Pin with no memory connected.
Identification:ID Pin:Memory Sizes
Indicates the size in bytes of the memory connected to each ID Pin. Each array element corresponds to an ID Pin. The array contains 0 for each ID Pin with no memory connected.
Identification:ID Pin:Pin Names
Indicates the names of all the ID Pins on this device.
Identification:ID Pin:Pin Statuses
Indicates status of each ID Pin.
Identification:Product Category
Indicates the product category of the device. This category corresponds to the category displayed in MAX when creating NI-DAQmx simulated devices.
Identification:Product Number
Indicates the unique hardware identification number for the device.
Identification:Product Type
Indicates the product name of the device.
Location:Bus Type
Indicates the bus type of the device.
Location:CompactDAQ:Chassis Device Name
Indicates the name of the CompactDAQ chassis that contains this module.
Location:CompactDAQ:Slot Number
Indicates the slot number in which this module is located in the CompactDAQ chassis.
Location:CompactRIO:Chassis Device Name
Indicates the name of the CompactRIO chassis that contains this module.
Location:CompactRIO:Slot Number
Indicates the slot number of the CompactRIO chassis where this module is located.
Location:PCI:Bus Number
Indicates the PCI bus number of the device.
Location:PCI:Device Number
Indicates the PCI slot number of the device.
Location:PXI:Chassis Number
Indicates the PXI chassis number of the device, as identified in MAX.
Location:PXI:Slot Number
Indicates the PXI slot number of the device.
Location:TCP/IP:Ethernet IP Address
Indicates the IPv4 address of the Ethernet interface in dotted decimal format. This property returns 0.0.0.0 if the Ethernet interface cannot acquire an address.
Location:TCP/IP:Hostname
Indicates the IPv4 hostname of the device.
Location:TCP/IP:Wireless IP Address
Indicates the IPv4 address of the 802.11 wireless interface in dotted decimal format. This property returns 0.0.0.0 if the wireless interface cannot acquire an address.
TEDS:Hardware TEDS Supported
Indicates whether the device supports hardware TEDS.
Terminals
Indicates a list of all terminals on the device.
Time:Number of Time Triggers
Indicates the number of time triggers available on the device.
Time:Number of Timestamp Engines
Indicates the number of timestamp engines available on the device.
Triggering:Analog Triggering Supported
Indicates if the device supports analog triggering.
Triggering:Digital Triggering Supported
Indicates if the device supports digital triggering.
Triggering:Time Triggering Supported
Indicates whether the device supports time triggering.

NI-DAQmx VI and Function Reference

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