User Guide

Chapter 3 Preparing a design for simulation
78
Using VSRC or ISRC parts
The VSRC and ISRC parts have one property for each
analysis type: DC, AC, and TRAN. You can set any or all
of them using PSpice netlist syntax. When you give them
a value, the syntax you need to use is as follows.
Note OrCAD recommends that if you are running only a transient
analysis, use a VSTIM or ISTIM part if you have the standard
package, or one of the other time-based source parts that has
properties specific for a waveform shape.
Table 15
This property... Has this syntax...
DC
DC_value[units]
AC
magnitude_value[units] [phase_value]
TRAN
time-based_type (parameters)
where
time-based_type
is
EXP
,
PULSE
,
PWL
,
SFFM
, or
SIN
, and the
parameters
depend on the
time-based_type
.
For t
h
e syntax an
d
meaning o
f
transient
source specifications, refer to the I/V
(independent current and voltage source)
device type in the
Analog Devices
chapter in the online
OrCAD PSpice
A
/D Reference Manual
.
Pspug.book Page 78 Wednesday, November 11, 1998 1:14 PM