Slow Scan Engine

[Brunk]

I'm trying to read an analog input signal from a function generator via Scan Engine on a cRIO-9074, but scan engine doesn't seem to be updating as quickly as it should be. The input is a 10Hz sine wave +/-3V into a 9207 module. The scan engine settings are default, and I get good readings when hooked up to a DC power supply so all the hardware should be good. The attached front panel picture shows the results I'm getting which I figure is about a 0.8sec update rate.

Thanks for any help,

~Tyler

[Eden_S]

Hi Tyler,

Thank you for your post.

I notice that your "Network Publishing Period" is set to 100ms. This means that the target will update published values on the network every 100ms only, even though you have the scan period set to 10ms.

Try altering the network publishing period to be closer to the scan period. Please tell me if this has solved the issue.

Thank you,

[Brunk]

I figured out yesterday that the card was set to High Resolution mode which increases the conversion time by 50ms. Switching it to High Speed mode got me the input signal I was expecting. Increasing the network publishing time does help clean it up though.

Thanks for the help.