Configuration – Teledyne LeCroy Eye Doctor II User Manual

Page 17

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Operator's Manual

Emulate / De-embed Setup

1. Choose a

Configuration

.

2. Touch the De-Embed Fixture, Emulate Channel and/or De-embed Channel buttons to specify the S-

Parameters for the fixtures and channels. See the

Fixture and Channel Dialog

for more information.

3. Specify a

Bandwidth Limit

or check the Auto BW checkbox and specify a Boost for Auto amount.

4. Touch Apply

Note:Any time you make a change in the Emulate / De-embed dialog, click Apply again to update the
associated processing. If Apply is not clicked, the processing defined from the last time the Apply button
was clicked remains unchanged and in use.

PLEASE NOTE THE FOLLOWING:

l

Bandwidth Limit is only required if the chosen configuration requires de-embedding. For example,
if you choose the Emulate Channel / De-embed Fixture configuration, but leave the de-embed fix-
ture block as "ideal," the bandwidth limit has no effect on the signal.

l

The indicator light next to the Apply button turns green if everything is properly setup. If the indi-
cator does not turn green, something is wrong with the S-Parameter file or port assignment. Use
the

View Response

functionality to help debug your issue.

l

For more information on the De-embed Fixture, Emulate Channel or De-embed Channel, refer to

Fixture and Channel Dialog

.

For more information, see

Eye Doctor II Overview

.

Configuration

The Configuration selection box in the Emulate / De-embed dialog allows you to choose from the fol-
lowing three configurations:

Emulate Channel / De-embed Fixture

The Emulate Channel / De-embed Fixture configuration allows you to both de-embed a fixture and emu-
late a serial data channel at the same time. This is used when you are using a fixture to measure at the
transmitter side of the serial data channel. It first moves the measurement reference to the output of the
transmitter, and then moves the reference to the far side of a serial data channel. This allows for emu-
lating the effects of the serial data channel on your signal with the fixture effects removed.

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