Hey Rich, In a pulse train generation application, error -10609 indicates that the first pulse train is still being generated. So basically you're updating the pulse specs too quickly. Your example originally used AI Sample Channel instead of AI Single Update. AI Sample Channel configures the analog input each time it=92s used. It seems what happened is replacing this with AI Single Update speed up your loop causing the error. There are several ways to work around this. One suggestion would be to add a longer delay in the loop. Another possibility would be to check for the error and either clear it and go on to the next iteration or continue to try and change the pulse specs until you succeed and then proceed to the next iteration of the original loop. I=92m attaching a link to an example that checks for the error and if it occurs clears it.
<a href =3D http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=3DB45EACE3= E21756A4E034080020E74861&p_node=3DDZ52328&p_source=3Dexternal>Pulse Train Generation with Changing Pulse Specs (PWM) </a> Please post back if you have any additional questions. Sarah Miracle National Instruments
