# PSPICE SYNTAX & COMMAND SUMMARY

### .AC - AC (Frequency) Analysis

General Format:
.AC [LIN,DEC,or OCT] |# points| |start frequency| |stop frequency|
.AC tells PSpice to run the circuit over the frequency range given. The frequency
range is from the |start frequency| to the |stop frequency| inclusive, with the
circuit simulated |# points| times per division. The division is specified by
LIN, DEC, or OCT.
LIN tells it to run |# points| simulations over the entire range of frequencies.
DEC tells it to run |# points| simulations per decade (power of 10) over
the entire range of frequencies.
OCT tells it to run |# points| simulations per octave (power of 2) over
the entire range of frequencies.
Example :
.AC DEC 20 1 1MEG
PSpice runs an AC analysis over the range of 1 Hz to 1 MHz with 20 simulation
points per decade.

**COMPONENTS**

B C
D E
F G
H I
J K
L M
Q R
S T
V W
X Sources

**COMMANDS**

* ;
+ .AC
.DC .END
.ENDS .FOUR
.IC .INC
.LIB .MC
.MODEL .NODESET
.NOISE

.OP
.OPTIONS .PLOT
.PRINT .PROBE
.SENS .SUBCKT
.TEMP .TF
.TRAN .WIDTH