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Keysight Technologies
N4974A PRBS Generator 44 Gb/s
Data Sheet
Description
The Keysight Technologies, Inc. N4974A PRBS generator 44 Gb/s is
a self-contained pattern generator capable of operating at either a
single fixed-frequency bit rate using the internal oscillator or operat-
ing over a wider frequency range when used with an external half-rate
clock source. The N4974A PRBS generator 44 Gb/s operates from 22
to 44 Gb/s when used with an external clock or at 39.81312 Gb/s
when used with the internal oscillator. The generator is also avail-
able with two more internal oscillator choices, operating at either
25.78125 or 28.0 Gb/s.
The N4974A PRBS generator 44 Gb/s source is based on custom
ASICs, allowing a high degree of integration. The low parts count in
the signal path minimizes the degradation of the low phase noise
oscillator, providing an extremely clean eye pattern. Utilizing the
internal oscillator, the generator achieves world class performance of
500 fs rms jitter, with a 500 mV output amplitude and 8 ps rise time.
Application
The N4974A PRBS generator 44 Gb/s source is designed to be used
as the source for testing ultra-high speed communications com-
ponents such as those used in OC 768/STM 256 applications. The
40G PRBS source is a perfect companion to a digital communication
analyzer in a stimulus response measurement for 40 Gb/s compo-
nents such as driver amplifiers, transimpedance amplifiers, optical
modulators, and DEMUX. Other applications include backplane signal
integrity testing, and cable testing.
Features