.step
command (e.g. .step param N 1 4 1
won't work).
Gh_242: all pins shorted together -- ignoring.
"; it's safe to ignore them.
"Analysis Failed: Matrix is singular"
show up, it may be because the calculated order is larger than it can handle. The error log can confirm this if it generates messages similar to "WARNING: Node U1:17 is floating"
. For example, this particular error means that the required order for an Analog Active LP is either 33
or 34
. The FIRs are polyphase but, even if the numbers will be different, the log will complain about the same floating nodes.