Discover Available Devices

Discover devices connected to your system usingdaqlist. To learn more about an individual device, access the entry in the device table.

d = daqlist("mcc"); d(1, :)

ans = 1×4 table DeviceID Description Model DeviceInfo ________ _____________________________________________ _________________ ________________________ "Board0" "Measurement Computing Corp. USB-1608FS-Plus" "USB-1608FS-Plus" [1×1 daq.sdk.DeviceInfo]

Create a DataAcquisition

Thedaqfunction creates a DataAcquisition object. The DataAcquisition contains information describing hardware, scan rate, and other properties associated with the acquisition.

dq = daq("mcc")

dq = DataAcquisition using Measurement Computing Corp. hardware: Running: 0 Rate: 1000 NumScansAvailable: 0 NumScansAcquired: 0 NumScansQueued: 0 NumScansOutputByHardware: 0 RateLimit: [] Show channels Show properties and methods

Add an Analog Input Channel

Theaddinputfunction attaches an input channel to the DataAcquisition. You can add more than one channel to a DataAcquisition. This example uses one input channel, Ai0, which is connected to a function generator channel outputting a 10 Hz sine wave.

addinput(dq,"Board0","Ai0","Voltage"); dq

dq = DataAcquisition using Measurement Computing Corp. hardware: Running: 0 Rate: 1000 NumScansAvailable: 0 NumScansAcquired: 0 NumScansQueued: 0 NumScansOutputByHardware: 0 RateLimit: [0.1000 100000] Show channels Show properties and methods

Acquire Timestamped Data

Theread函数开始收购和后悔urns the results as a timetable.

[data, startTime] = read(dq, seconds(1));

Plot Acquired Data

plot(data.Time, data.Board0_Ai0); xlabel("Time (s)"); ylabel("Voltage (V)");

Change Default Properties of the Acquisition

By default, acquisitions run for one second at 1000 scans per second. To acquire at a different rate, change theRateproperty.

dq.Rate = 5000;

Run the acquisition and plot the acquired data:

[data, startTime] = read(dq, seconds(1)); plot(data.Time, data.Board0_Ai0); xlabel("Time (s)"); ylabel("Voltage (V)");