Which DAQ card support to Capture AC signal voltage?

[erganesh]

I am new in Labview programing and i plan to capture AC Voltagel(Not DC voltage). 

I have DAQ 6009 card.

My question is DAQ 6009  support Capture AC voltage? otherwise which DAQ card support to capture AC voltage

[ejkaiser]

The question is what is AC for you? If you are talking about this system http://sine.ni.com/nips/cds/view/p/lang/de/nid/201987 you have a maximum sample rate of 48 kHz, so according to the Nyquist criterion you can sample up to 24 kHz. Is that AC enough?

Cheers

Edgar

[hicksc]

Hi CPUT

You can find the detailed specifications of the 6009 here. You can measure an AC voltage between ±10 V of GND using this module. 

Kind Regards

[crossrulz]

---

@CPUT wrote:

I am new in Labview programing and i plan to capture AC Voltagel(Not DC voltage). 

I have DAQ 6009 card.

My question is DAQ 6009  support Capture AC voltage? otherwise which DAQ card support to capture AC voltage

---

An AC signal is nothing more than a constantly changing DC voltage.  Ok, there's more to it than that.  But still, the DAQ takes quick snapshots of what the signal voltage is at a given instant.  If you take enough of these snapshots, you can recreate the signal.  Niquist states that you need to sample at at least twice the bandwidth of your AC signal.  I recommend more of 3-5 times.