Help to generate sine wave below 5mV with DAQ-CARD 6062E

[leocechet]

I have some doubts that you can maybe help me. I am trying to generate a sine wave with 100Hz of frequency. 0 to 100 Hz to be quite correct. Well, I am generating through the Sine Waveform.vi, I'm using some things to manipulate my signal. The problem is that I need to generate below 5mV (according to the datasheet, as far as I could understand, it's not possible). Somebody here has ever done something similar? What solution did you find? Another doubt is: how can I get the greater of my board? What I mean is: is my board good enough to process the signal generation even if my computer is not that good? Thank you very much!

[johnsold]

The 6062 has a 12-bit D/A converter with a +/-10 V range.  That means that the resolution is just slightly less than 5 mV. So you could just barely generate something which looked like a 5 mV square wave (but not a very good one, probably).

What you can do is to generate a 5 volt sine wave and run it through a 1000:1 attenuator (voltage divider).  If you need a low impedance source, you can use a unity gain buffer after the attenuator.  You may need to provide adjustments for offset voltages and should consider noise levels as well.

Lynn