Hi
Thanks for the response. YEs indeed your vi sets the scale correctly initially, but now the data does not display. If I "autoscale X " suddenly the data displays but we are back to the 7:00 am 1903 scale on the x axis.
It appears your vi sets the scale correctly initially, but the data is "off scale" now in some way and so does not display.
Any other suggestsion would be appreciated.
Thanks again.