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My name is Tim.

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I'm a Signal Integrity
and Power Integrity Engineer at EEsof.

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Today, although the problem
is in the real world,

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I'm going to use simulation to show
how things can be in the real world.

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If you look at it very broadly,
signal integrity is all around us

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and is happening right now at this instant.

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We have a presenter right here,
the transmitter.

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I'm transmitting some sort of information
to all of you at this moment,

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and you, as the receiver, the audience,
are taking in the information.

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There's also the channel in the middle,
that is the air right now, the medium.

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That is in a broad sense,
but today, we'll talk about signal integrity

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in a more narrow sense
in a digital communication channel.

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Of course, you have your CPU
in your PC laptop or in your PC workstation,

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and it's trying to talk
to the LED display.

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In the middle, you have
all these pesky interconnects.

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You have graphic cards, cables,
onboard video processors.

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We call them interconnects,

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and as my advisor would say
what signal integrity is, Eric Bogatin says,

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"Signal integrity is about the problems
interconnects introduce and how to avoid them."

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Today, we will take a look
at what signal integrity is

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with a case
of a failing virtual channel.

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We're not breaking anything,
but we are going to study this failing channel.

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To do so, we'll do four major things.

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Number one,
we will evaluate the channel.

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Number two,
we will investigate the channel.

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Three, we'll understand
the root cause.

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It's only then
we can solve the problem.

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The only way to solve any signal integrity problem
is to understand the root cause.