Hi,
I use this hardware:
PXI-1036DC
PXI-8183
PXI-4071
4 PXI-6509 to drive about 400 relays
and this software:
LabwindowsCVI 8.1
DMM 2.5.1
NI-DAQ 8.5
I would like to read many variable dc voltages more fast that it's possible, (from 0 Volt to 600 Volt) so, I've configured the DMM as autorange (from a NI example), in the call I've put a 0.02 sec. delay because the relays needs 0.008 msec for to open or close. My problem is that the DMM read negative values of voltage (and current) or NaN. I've discovered that, in some cases, the value is from one range and another and the DMM don't decide in which range must read. But I think that the reading routine is'nt complete, please somebody can help me?
