PXIe-5451 Digital Filter Interpolation

[bahec666]

Hello,

I'm using PXIe-5451 waveform generator with FPGA PXIe-7966R. They are connected with peer-to-peer technology.

I want to use Digital Interoplation Filter, but there is an error occures in the property node. Here is a screen of this error.

What should i do to fix this problem?

[Air_Frantz]

There could be a few different things going on here.  Firstly, I would suggest trying to specify an 'Active Channel' in the property node before enabling the digital filter.  This may be a property which you can only apply after an active channel is selected.

Also, this property can only be set when using certain sample rates.  this is outlined in the document here:

http://zone.ni.com/reference/en-XX/help/370524R-01/siggenhelp/5406_ni_5421_digital_filter_informatio...

You can also try to use the 'Configure Digital Filter.vi' as well.  Information on this is below, but basically you would call this to enable and select channels and then change the interpolation factor using a property node.

http://zone.ni.com/reference/en-XX/help/370524R-01/nifgenlv/nifgen_configure_digital_filter/

[bahec666]

This methods are not helped.

[Air_Frantz]

So do you get the same error when you try to use the VI instead of the property node to enable digital filtering?

[bahec666]

Yes, i do.

[Air_Frantz · Accepted solution]

It looks like the 5451 does not have a digital interpolation filter.  There is only an FIR filter on the device.  You can verify that this is the case and the issue is not coming from using P2P by trying to run a scripting example which does not use P2P and setting this property.  You should get the same error.