$ifelectrode

$ifelectrode is the command to setup the bias operation range. In the program, there are 4 types of electrical contacts, which are gate, drain, source, and base contact. The command is as following: The sweeping of base is disabled. So vbend and vbstep are useless.

$ifelectrode
vgstart, vgend, vgstep
vdstart, vdend, vdstep
vsstart, vsend, vsstep
vbstart, vbend, vbstep

For example

$ifelectrode
2.0  3.0  1.0 
4.0  -1.0 -0.2
1.0  2.0 0.01
0.0  0.0 0.01

The program will sweep from following loop

 For vg=vgstart,vgstep, vgend
   For vd=vdstart,vdstep, vdend
     For vs=vsstart,vsstep, vsend

     End For
   End For
 End For