data aquisition toolbox session based interface -- external clocking of analog input possible?

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Eric Keller 2011-10-31

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apparently not, but maybe I'm missing something.

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Eric Keller 2011-10-31

it would be really nice if the following warning wasn't in every "legacy" help file: "Note You cannot use the legacy interface on 64–bit MATLAB. Use the session-based interface to acquire and generate data."

This pretty much precludes using your favorite search engine to find help on the session based interface

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Answer 1

Manisha 2011-12-15

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在 MATLAB Online 中打开

Hi Eric,

Data Acquisition Toolbox MATLAB R2012a prerelease has added new function for triggers and clocks . If you have a valid license you can download the prerelease here

You would need to use

addClockConnection

function to provide your device with an external clock.

You can modify the below code to suit your requirements:

s = daq.createSession('ni');
s.addAnalogInputChannel('Dev4', 0, 'Voltage');

The below command will add a external scan clock connection from an external source to the PFI0 terminal on Dev4. Make sure you connect your external clock to PFI0 physically

s.addClockConnection('External','Dev4/PFI0','ScanClock');

Your acquisition will now use your external clock

s.startForeground();

Hope that helps,

Manisha