Agilent Technologies J-BERT N4903B Instrukcja Użytkownika Pobierz pdf (Strona 3)

Agilent N4916B Applications

Emulating transmitter de-emphasis

The de-emphasis signal converter N4916B allows emulating a transmitter by vary-

ing the de-emphasis in a wide range and for each of the three cursors individually.

The N4916B is transparent to jitter on the data and clock signals from the pattern

generator. The N4916B outputs are DC coupled, so that even unbalanced pattern

streams can be generated without DC drifts.

Figure 2. Generating a de‑emphasis signal with N4916B and J‑BERT N4903B

N4916B

Data in

De-emphasized data out

Clock in

Receiver (RX)Channel (CH)

Channel

RX latch

CDR

To BERT

analyzer

Device under test

Clock

J-BERT N4903B

1 2 3 4 5 6 7 8

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Agilent Technologies J-BERT N4903B Instrukcja Użytkownika Strona 3