Cadence Spectre SAVE issue

Hi everyone,

This is my first posting here.


I have a question for those who have used cadence spectre outside the
ADE environment. I am running spectremdl on a spectre netlist. Now I
want to be able to save the differences between two node voltages and
view the graphical plot from the *raw file. I know how to view plots
when I save a single voltage or a current, but I am unable to calculate

(say) the differences between two voltages. Any suggestion will be
appreciated.

 

Hi,

Are you using WaveScan? You can use Calculator to write some
expressions, including the difference of two voltages. To use
Calculator, the format of waveform must be PSF, and it is the default
format of Spectre.

For Spectre, the expression in save statement isn't supported. And
Spectremdl can't save waveform if I remember correctly. It is easy for
a Waveform tool to do simple calculation.

Yuchun