Agilent Technologies 71501D Instrukcja Użytkownika Pobierz pdf (Strona 51)

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Application Tutorials

Tutorial 5: Use Software Filters

Eyeline Display Showing Laser Overshoot

Load the Software Filter

2 Place the 70874A memory card in the front-panel card slot.

3 Display the catalog of files on the memory card by pressing:

Mass Storage

4 Turn the front-panel knob to highlight the file "a_bt248832".

5 Load the file into user-corrections by pressing:

LOAD FILE

This file simulates a 4th-order Bessel-Thomson filter with a cutoff at three-

quarters of the bit rate. This allows you to observe the laser transmitter signal

in a specified bandwidth. This software filter is equivalent to using a hardware

filter, except that trace noise may be suppressed more.

6 Apply the filter data to the traces by pressing:

Trg,Cal, more 1 of 2, usr cor ON OFF ON

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Agilent Technologies 71501D Instrukcja Użytkownika Strona 51