PXIe-4137 Current Pulse

Hi,

I am trying to get the current pulse from PXIe-4137 output using NI DCPower SFP.

The voltage pulse is working as I expect. I set 100mS on time and 200mS off time. I get right scope view.

But current pulse is not. I always get the current output while running the unit. Doesn't matter what is on/off time. 

Is there any idea what's going on?

Thanks

Oktay