User`s guide

2 Analyzin

Waveforms in Probe

Overview of Probe

MicroSim Probe is the waveform analyzer for PSpice A/D

simulations. In Probe, you can visually analyze and interactively

manipulate the waveform data produced by circuit simulation.

Probe uses high-resolution graphics so you can view the results

of a simulation both on the screen and in hard copy. In effect,

Probe is a software oscilloscope. Running PSpice A/D

corresponds to building or changing a breadboard, and running

Probe corresponds to looking at the breadboard with an

oscilloscope.

With Probe you can:

• view simulation results in multiple plot windows

• compare simulation results from multiple circuit designs,

including checkpoint schematics, in a single plot window

• display simple voltages, currents, and noise data

• display complex arithmetic expressions that use the basic

measurements

• display Fourier transforms of voltages and currents, or of

arithmetic expressions involving voltages and currents

• for mixed analog/digital simulations, display analog and

digital waveforms simultaneously with a common time base

• add text labels and other annotation symbols for

clarification

PSpice A/D generates two forms of output: the simulation

output file and the Probe data file. The calculations and results

reported in the simulation output file act as an audit trail of the

simulation. However, the graphical analysis of information in

the Probe data file is the most informative and flexible method

for evaluating simulation results.