Data Acquisition Toolbox™

Device-Specific Properties — Alphabetical List

Device-Specific Property by Vendor Reference

Device-specific properties apply only to hardware devices of a specific type or from a specific vendor. For example, the BitsPerSample property is supported only for sound cards, while the NumMuxBoards property is supported only for National Instruments devices.

The properties are grouped according to these supported vendors:

You can display device-specific properties with the set function. The device-specific properties are displayed after the base properties.

Note Some device-specific property values are not available for all devices. Refer to your hardware documentation for detailed information about device-specific behavior.

Advantech

Property Name	Description	Device Objects
`TransferMode`	Specify how data is transferred from data acquisition device to system memory	AI, AO

Measurement Computing

Property Name	Description	Device Objects
`OutOfDataMode`	Specify how value held by analog output subsystem is determined	AO
`TransferMode`	Specify how data is transferred from data acquisition device to system memory	AI, AO

National Instruments

Property Name	Description	Device Objects
`Coupling`	Specify input coupling mode	AI
`ExternalClockSource`	Specify which signal generates an analog output update across channels	AO
`ExternalSampleClockSource`	Specify which signal provides clock for sample conversions across channels	AI
`ExternalScanClockSource`	Specify which signal starts series of conversions across channels	AI
`HwDigitalTriggerSource`	Specify which signal initiates data acquisition	AI, AO
`NumMuxBoards`	Specify number of external multiplexer devices connected	AI
`OutOfDataMode`	Specify how value held by analog output subsystem is determined	AO
`TransferMode`	Specify how data is transferred from data acquisition device to system memory	AI, AO

Parallel Port

Property Name	Description	Device Objects
`BiDirectionalBit`	Specify BIOS control register bit that determines bidirectional operation	DIO
`PortAddress`	Indicate base address of parallel port	DIO

Sound Card

Property Name	Description	Device Objects
`BitsPerSample`	Specify number of bits sound card uses to represent each sample	AI, AO
`StandardSampleRates`	Specify whether valid sample rates snap to small set of standard values, or if you can set sample rate to any value within allowed bounds	AI, AO

Getting Command-Line Property Help

To get command-line property help, you should use the daqhelp function. For example, to get help for the sound card's BitsPerSample property:

daqhelp BitsPerSample

Note You can use daqhelp without creating a device object.

You can also get property characteristics, such as the default property value, using the propinfo function. For example, suppose you create the analog input object ai for a sound card and want to find the default value for the BitsPerSample property.

ai = analoginput('winsound');
out = propinfo(ai,'BitsPerSample');
out.DefaultValue
ans =
    16

UserData

Device-Specific Properties — Alphabetical List