How to use alter statement in spectre?

[didibabawu]

I run the spectre in command line, and when I use the alter statement in spectre , it doesn't work. Can anybody give me some advise about the staement? The following is the statement I use:

aa alter param=k1 value=2

The k1 is the parameter and was set 1 in the netlist.

 

[ranjbar]

try using altergroup instead:

alter_1 altergroup {
parameters k1=2
}

 

[nasi_lemak]

aa alter param=k1 value=2

I think this should work. I believe that one difference between HSPICE and Spectre is that in HSPICE, I believe the .alter command automatically kicks off a 2nd analysis, while in Spectre, you need to invoke it explicitly.

So, you'd need something like:

aa alter param=vg value=1
dcsweep_aa dc param=vd start=0 stop =2 step=0.1

Works for me, anyhow. Good luck!