I'm trying to help this poor guy on the forum and ran into an odd stumbling block.
I'm trying to use Siggen to generate a square wave form and output it to the analog output of a Mesa 7i77. This is for tuning the current loop on a servo drive. I set up a simple config to do this, but with the oscilloscope hooked up to the analog output of the 7i77, what we are seeing is not quite the square wave I was expecting. With the Siggen set for a 100hz signal we are seeing +1v for about 1ms then 0v for about 4ms then -1v for 1ms then 0v for 4ms, It isn't quite the square wave I was shooting for. Where did I go wrong? Yellow trace in this image is the analog output from the 7i77. https://forum.linuxcnc.org/media/kunena/attachments/21712/DS1Z_QuickPrint1.png and the hal file is here: https://forum.linuxcnc.org/12-milling/44454-set-up-using-amc-ab15a100-drives-brushed-dc-motor-prototrak-plus-with-encoders?start=270#249794 Todd Zuercher P. Graham Dunn Inc.<http://www.pgrahamdunn.com/index.php> 630 Henry Street Dalton, Ohio 44618 Phone: (330)828-2105ext. 2031 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
