how to plot open loop gain in spectre using calculator?

[ella1923]

hi.
i'm learning to use spectre simulation tool. can someone teach me how to display open loop gain wrt to frequency using spectre calculator?

in hspice I can plot like this:
.tf v(vx) vf
.pz v(vx) vf
.ac dec 100 10 100000Meg
.print vdb(vx) vdb(vf)

how about in spectre?


and also how to alter two parameters in spectre, like for example in hspice I can use:

.alter
RL vout gnd 28
vf vf gnd dc 1.74v ac 1v


thanks in advance,
ella

Post moved to PCB Routing & Schematic Layout software & Simulation [alexan_e]