Agilent Technologies 8133A Instrukcja Obsługi Pobierz pdf (Strona 50)

50 16800 Series Portable Logic Analyzers Service Guide

3 Testing Performance

The important point is that your eye finder display

should look similar to the picture below (although it may

be shifted left or right), and eye finder must be able to

place the blue bars in the narrow eye. (The example

below shows eye finder in the 250 Mb/s mode.)

To re-align a stray channel

If the blue bar for a particular bit does not appear in its eye

near the recommended starting position, then do the

following steps to realign the sampling position of the stray

channel.

In the following example, the sampling position of two

channels (My Bus 1[0] and My Bus 1[2]) must be realigned

with the sampling position of the other channels.

8 Using the mouse, drag the sample position (blue bar) of

the stray channel (channels “My Bus 1[0]” and “My Bus

1[2]” in the above example) so that it is in the same eye

as the other channels. The Suggested Position from eye

finder (green triangle) will also move to the new eye.

Repeat the above step for all remaining stray channels.

9 Click the Run button in the Thresholds and Sample

Positions dialog again.

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Agilent Technologies 8133A Instrukcja Obsługi Strona 50