Getting Started with MCC Devices

This example shows how to get started with MCC devices from the command line.

Discover Available Devices

Discover devices connected to your system using daqlist. 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

The daq function 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

The addinput function 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

The read function starts the acquisition and returns 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 the Rate property.

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)");