User`s guide

Definin
g
Stimuli 3
-25
If
y
ou want to specif
y
multiple stimulus t
y
pes
If you want to run more than one analysis type, including a
transient analysis, then you need to use either of the following:
• time-based stimulus symbols with AC and DC attributes
• VSRC or ISRC symbols
Usin
g
time-based stimulus s
y
mbols with AC and
DC attributes
The time-based stimulus symbols that you can use to define a
transient, DC, and/or AC input signal are listed below.
In addition to the transient attributes, each of these symbols also
has a DC and AC attribute. When you use one of these symbols,
you must define all of the transient- attributes. However, it’s
common to leave DC and/or AC undefined (blank). When you
give them a value, the syntax you need to use is as follows.
This
attribute...
Has this syntax...
DC
DC_value[units]
AC
magnitude_value[units] [phase_value]
VEXP
VPULSE
VPWL
VPWL_F_RE_FOREVER
VPWL_F_N_TIMES
VPWL_RE_FOREVER
VPWL_RE_N_TIMES
VSFFM
VSIN
IEXP
IPULSE
IPWL
IPWL_F_RE_FOREVER
IPWL_F_N_TIMES
IPWL_RE_FOREVER
IPWL_RE_N_TIMES
ISFFM
ISIN
For the meanin
g
of transient
source attributes, refer to the I/V
(independent current and
volta
g
e source) device type
syntax in the
Analo
g
Devices
chapter in the online
MicroSim
PSpice A/D Reference Manual
.