12-16-2010 09:39 AM
Hi,
im using NI PXI 4070 DMM to measure a square wave with f=800Hz, i got a result of 4.4V.
i used CVI, and with autozero_dmm.
however, using the handheld DMM(fluke), i got 4.7 (which is what im expecting).
any ideas please?
12-17-2010 03:30 PM
Hi jurich1904-
Are you measuring this signal in AC or DC mode? In your post, it seems like you are calculating a DC value from an AC signal. Maybe I am just not understanding correctly - are you saying that the peak of this square wave is at 4.7 V and you are only reading 4.4 V? If you are in AC mode, what have you set your bandwidth limits to be?