User`s guide

17
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44 Analyzin
g
Waveforms in Probe
Probe Trace
Expressions
Traces are referred to by Probe output variable names. Probe
output variables are similar to the PSpice A/D output variables
specified in the Schematics Analysis Setup dialog boxes for
noise, Monte Carlo, worst-case, transfer function, and Fourier
analyses. However, there are additional alias forms that are valid
within Probe. Both forms are discussed here.
To add traces usin
g
Probe output variables
1
From the Trace menu, select Add to display the Add Traces
dialog box.
2
Construct a trace expression using any combination of these
controls:
• In the Simulation Output Variables frame, click output
variables.
• In the Functions or Macros frame, select operators,
functions, constants, or macros.
• In the Trace Expression text box, type in or edit output
variables, operators, functions, constants, or macros.
3
If you want to change the name of the trace expression as it
displays in the plot window, use the following syntax:
trace expression;display name
4
Click OK.
You can display a subset of the
available simulation output
variables by clearin
g
or selectin
g
the variable type check boxes in
the Simulation Output Variables
frame. Variable types not
g
enerated by the circuit
simulation are dimmed.
For more information about trace
expressions, see
Analog Trace
Expressions on page 17-54 and
Digital Trace Expressions on
page 17-57.