User`s guide
Mixed Analo
g
/Di
g
ital Tutorial 17
-27
Runnin
g
the Simulation
To run the simulation
1
From the Analysis menu, select Simulate.
Because the oscillator circuit used here has been run with
only a transient analysis, Probe automatically selects the
transient analysis data section from the Probe data file. This
means that the Available Selection dialog box is skipped
and control is placed immediately into the main Probe
window.
Anal
y
zin
g
Simulation Results
To view the clock input to the inverter (volta
g
e at
net 1)
1
From the Trace menu, select Add to display the Add Traces
dialog box.
2
In the Simulation Output Variables list, click
V(1) to plot
the voltage at net 1.
To add a second
y
-axis to avoid analo
g
trace
overlap
1
From the Plot menu, select Y Axis Settings.
2
In the Data Range frame, select User Defined and set the
range from -5 to 5. This will change the range for the current
y-axis.
3
From the Plot menu, select Add Y Axis.
4
From the Plot menu, select Y Axis Settings.
5
In the Data Range frame, select User Defined and set the
range from 0 to 10.
6
In the Scale frame, select Linear then click OK. (See
Figure 17-9.)
or press !
or press I
You can also use aliases to refer
to nets. For example, V(U2:A)
refers to the same net as V(1).
In the plot window, double-click the y-axis
.
press C
+
Y
N
ote t
h
at t
h
e
V(
1
)
l
a
b
e
l
at t
h
e
bottom of the plot is preceded by
a boxed 1. This indicates that the
far-left y-axis applies to the V(1)
waveform.
In the Y Axis Settin
g
s dialo
g
box,
you can chan
g
e to the settin
g
s
for another y-axis by selectin
g
it
from the Y axis Number box.