Problem registering devices for data acquisition (mcc and winsound)

Using USB-1408FS from Measurement Computing.

Besides Matlab (see version info below), also have the following installed:

• DASYlab software version 11.0
• instaCal version 6.10

When I try to register the adapter mcc for daq with the daqregister('mcc') command, it seems to succeed:

>> daqregister('mcc')
ans =
'mwmcc.dll' successfully registered.

But when I then try to define an analog object I receive an error:

>> ai = analoginput('mcc',0);
??? Error using ==> analoginput.analoginput at 142
Failure to find requested data acquisition device: mcc.

Checking further, I get:

daqhardwareinfo = daqhwinfo
daqinstalledadaptors = daqhardwareinfo.InstalledAdaptors
daqhardwareinfo =
       ToolboxName: 'Data Acquisition Toolbox'
       ToolboxVersion: '2.18 (R2011a Prerelease)'
        MATLABVersion: '7.12 (R2011a Prerelease)'
    InstalledAdaptors: {}   %%empty%%

From this, I understand that the mcc adapter is not installed/registered.

I have tried the same thing using 'winsound' instead of 'mcc' and get the same results.

What am I doing wrong?

TIA.

----------------------- MATLAB version info:

>> ver
-------------------------------------------------------------------------------------
MATLAB Version 7.12.0.62 (R2011a)
MATLAB License Number: ####### [SCd Censor]
Operating System: Microsoft Windows XP Version 5.1 (Build 2600: Service Pack 3)
Java VM Version: Java 1.6.0_17-b04 with Sun Microsystems Inc. Java HotSpot(TM) Client VM mixed mode
-------------------------------------------------------------------------------------
MATLAB                                                Version 7.12       (R2011a Prerelease)
Simulink                                              Version 7.7        (R2011a Prerelease)
Communications System Toolbox                         Version 5.0        (R2011a Prerelease)
Control System Toolbox                                Version 9.1        (R2011a Prerelease)
Curve Fitting Toolbox                                 Version 3.1        (R2011a Prerelease)
DSP System Toolbox                                    Version 8.0        (R2011a Prerelease)
Data Acquisition Toolbox                              Version 2.18       (R2011a Prerelease)
Fixed-Point Toolbox                                   Version 3.3        (R2011a Prerelease)
Image Acquisition Toolbox                             Version 4.1        (R2011a Prerelease)
Image Processing Toolbox                              Version 7.2        (R2011a Prerelease)
MATLAB Compiler                                       Version 4.15       (R2011a Prerelease)
Neural Network Toolbox                                Version 7.0.1      (R2011a Prerelease)
Partial Differential Equation Toolbox                 Version 1.0.18     (R2011a Prerelease)
Signal Processing Toolbox                             Version 6.15       (R2011a Prerelease)
Simulink Coder                                        Version 8.0        (R2011a Prerelease)
Simulink Control Design                               Version 3.3        (R2011a Prerelease)
Stateflow                                             Version 7.7        (R2011a Prerelease)
Statistics Toolbox                                    Version 7.5        (R2011a Prerelease)
Symbolic Math Toolbox                                 Version 5.6        (R2011a Prerelease)
Wavelet Toolbox                                       Version 4.7        (R2011a Prerelease)

Answer 1

[Rob Graessle]

Are you logged into Windows as an administrator? In order to register an adaptor you must be logged in with administrator privileges. Once you register the adaptor it can be used by all users.

[Yosh]

Yes, also tried it as administrator - same results :-(

[Yosh]

BTW, forgot to thank you for the quick answer - sorry about that - and thanks! Also, I was wondering - besides being logged in as admin on Windows, is there any special action one needs to do in Matlab? And once the device really is successfully registered - does the registration persist across logins and system shutdowns? I.E., once I figure out how to get it registered, is that a one-time configuration action that doesn't ever need to be repeated?

Thanks!

[Rob Graessle]

Yes, registering the adaptor just a one time configuration - once it works you won't need to repeat it again.

I'm sorry that my first suggestion didn't help. I'm not sure what's wrong. You could try installing the new version of MATLAB (R2011b) that was just released to see if that resolves the issue, or contact <http://www.mathworks.com/support/contact_us/index.html technical support>

Answer 2

[Radhika]

Yosh, you will also have to run MATLAB in administrator mode. Refer to this solution : http://www.mathworks.com/support/solutions/en/data/1-5SAEJ8/index.html

[Yosh]

Thanks, Radhika. Note that MATLAB is running as admin. Also, at the solution you referenced, an error is occurring at the time of daqregister. However, the error here is more subtle - as I wrote above the message is: ans = 'mwmcc.dll' successfully registered.

I.e., it appears to have been successful. However, it is NOT registered as shown by the subsequent commands (see original post).

Thanks,

Yosh