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Data Sheets
Features
• Self-contained PRBS generator
• Built-in, quarter-rate clock source (14.0 GHz) for 56 Gb/s operation
• 1010, 1100, and PRBS-15 patterns
• 500-1000 mV differential, adjustable output
• Quarter rate (Clk/4) clock input
• Quarter and half rate clock outputs
• Pattern trigger output
Description
The Keysight Technologies, Inc. N4975A PRBS generator 56 Gb/s is a self-contained pattern generator capable of operating at either 56 Gb/s data rate using the internal oscillator or operating over a wider data rate range of 39.8 to 56 Gb/s when used with an external quarter-rate clock source. This is made possible through comprehensive integration of the key building blocks into monolithic integrated circuits founded on SiGe technology. The performance generated from the N4975A PRBS generator 56 Gb/s is world class with the typical data signal having 500 fs rms jitter, 500 mV of output swing and 9 ps rise time.
Application
The N4975A PRBS generator 56 Gb/s, in conjunction with a high speed digital communications analyzer can be used to make eye and jitter measurements of 56 Gb/s components such as modulator drivers, optical modulators, MUX, and DEMUX components. The superior rise time, fall time, and excellent jitter of the N4975A PRBS generator 56 Gb/s make it desirable for production component test where the source performance needs to be as good as possible to meet production specification margins. The low price of the N4975A PRBS generator 56 Gb/s make it desirable for manufacturing environments which are cost sensitive.
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