Create a DataAcquisition Interface

This example shows how to create a DataAcquisition interface and add channels to acquire and generate data. You can also configure DataAcquisition and channel properties needed for your operation.

Step 1. Find Devices for the Vendor.

daqlist("ni")

2×4 table DeviceID Description Model DeviceInfo ________ ___________________________________ __________ _______________________ "Dev2" "National Instruments(TM) USB-6509" "USB-6509" [1×1 daq.ni.DeviceInfo] "Dev3" "National Instruments(TM) USB-6211" "USB-6211" [1×1 daq.ni.DeviceInfo]

Step 2. Create a DataAcquisition Object.

d = daq("ni")

DataAcquisition using National Instruments(TM) hardware: Running: 0 Rate: 1000 NumScansAvailable: 0 NumScansAcquired: 0 NumScansQueued: 0 NumScansOutputByHardware: 0 RateLimit: []

After you create a DataAcquisition object, add channels using theaddinputandaddoutputfunctions.

Step 3. Add Channels to the DataAcquisition.

Add an analog input channel, and view the DataAcquisition channel list:

addinput(d,"Dev3","ai0","Voltage") d.Channels

Index Type Device Channel Measurement Type Range Name _____ ____ ______ _______ ________________ __________________ __________ 1 "ai" "Dev3" "ai0" "Voltage (Diff)" "-10 to +10 Volts" "Dev3_ai0"

Step 4. Change Channel Properties.

Change the channelTerminalConfigproperty to'SingleEnded', and view the updated configuration:

d.Channels.TerminalConfig ="SingleEnded"; d.Channels

Index Type Device Channel Measurement Type Range Name _____ ____ ______ _______ _____________________ __________________ __________ 1 "ai" "Dev3" "ai0" "Voltage (SingleEnd)" "-10 to +10 Volts" "Dev3_ai0"

Create a DataAcquisition Interface

Step 1. Find Devices for the Vendor.

Step 2. Create a DataAcquisition Object.

Step 3. Add Channels to the DataAcquisition.

Step 4. Change Channel Properties.

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