07-31-2018 05:44 AM
When I am trying to assign different values to the DC set of a sine signal in Fgen Function Generator.vi, I receive the following message:
For the signal generation, I use PXI-5412, which is able to produce signals of up to 24 Vpk-pk, according to the manual.
What I am doing wrong?
Should I manually change the value of the Gain property?
07-31-2018 11:49 AM
http://www.ni.com/pdf/manuals/371468e.pdf
Bottom of page 3:
Offset Range Span of ±25% of amplitude range with increments <0.0014% of amplitude range
Reduce your requested offset or increase your amplitude.
08-01-2018 12:41 AM
Thank you for the reply!
I should have read the manual more carefully.
Does it mean that it is impossible to set the DC Offset to 5 V in order to configure a waveform with an amplitude of 10 V to range from 0 V to +10 V with NI PXIe-5412?
08-01-2018 02:40 AM
Hi artkop
Yes it does.
If i read the the manual correctly.
25% of "0-10v" would be "2.5v".
08-01-2018 07:16 AM
08-01-2018 11:32 AM - edited 08-01-2018 11:33 AM
If the Sine wave uses the full range of the DAC, then that's the limit. But you could download a User Defined Waveform that is a smaller Sine wave, then increase Amplitude to get it back where you wanted. After that, you should have more playroom with offset. The Used Defined Waveform doesn't even need to be centered around 0.0.
Not simple, and you sacrifice DAC resolution, but it's a potential workaround.