why is the voltage not being ramped

[Eugene Cameron]

I have a program which should be ramping the voltage from an indicated initial voltage to a final set voltage over a period of time which the user sets, but the voltage seams to be jumping instaneously from the starting to final set voltage. The ramp voltage.vi however seems to be functioning fine. any ideas?
i have attached the vi which is part of a ramp output library.

[Filipe A.]

Eugene;

If the ramping VI is working fine, the problem is probably in between the update of the data point array and the Analog Output channel.

I suggest you to have only the Analog Output VI outputing a known set of datapoints to check its operation. Once you are confortable with that portion, include the ramping VI, and keep monitoring the Update rate you are using, to make sure that all points of the array will be updated to the output.

Hope this helps.
Filipe A.
Applications Engineer
National Instruments