User`s guide

Transient (Time) Response 11
-15
7
To change stimulus references globally for a symbol:
a
Select Edit Library from the File menu to start the
symbol editor.
b
Create or change a symbol definition, making sure to
define the following attributes:
Transient (Time)
Response
The Transient response analysis causes the response of the
circuit to be calculated from TIME = 0 to a specified time. A
transient analysis specification is shown for the circuit
example.sch in Figure 11-2. (Example.sch is shown in
Figure 11-3.) The analysis is to span the time interval from 0 to
1000 nanoseconds and values should be reported to the
simulation output file every 20 nanoseconds.
During a transient analysis, any or all of the independent sources
may have time-varying values. In
example.sch, the only source
which has a time-varying value is V1 (VSIN part) with
attributes:
VOFF = 0v
VAMPL = 0.1v
FREQ = 5Meg
V1’s value varies as a 5 MHz sine wave with an offset voltage
of 0 volts and a peak amplitude of 0.1 volts. In general, more
than one source has time-varying values; for instance, two or
more clocks in a digital circuit.
PART symbol name (it is good practice to
have the symbol name match the
STIMULUS name)
STIMULUS stimulus name as defined in the
Stimulus Editor
See Chapter 5,Creating
Symbols for Models, for a
description of how to create and
edit symbols.
not
included
in:
Fi
g
ure 11-2
Transient
Analysis Setup for example.sch