Agilent Technologies N4970A Manual do Utilizador descarregar pdf (Página 24)

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Agilent N4974A and N4975A PRBS Generators

The Agilent Technologies 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 operating 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 available with two more internal

oscillator choices, operating at either 25.78125 or 28.0 Gb/s.

Key features & Specifications

• 40, 28, or 25 Gb/s data rates with internal fixed frequency clock

• 22 to 44 Gb/s data rates with external clock

• Excellent eye quality — rise/fall time < 8 ps typ

• Patterns 2

– 1;n=7,15,31

• 1000 mV differential output

• Ultra low noise trigger for precision time base applications

• Pattern trigger output

Applications

• Ultra-high speed communications components testing

• Stimulus response measurements for 40 Gb/s components

• Backplane signal integrity

• Optical transceiver characterization

The Agilent Technologies N4975A PRBS generator 56 Gb/s is a fully self-

contained 56 Gb/s pattern generator. The N4975A is designed to provide

an excellent quality “eye” through comprehensive integration of key build-

ing blocks into monolithic integrated circuits founded on SiGe technology.

Key features & Specifications

• Operates at 56 Gb/s with internal clock or from 39.8 to 56 Gb/s with

external clock source

• Self-contained PRBS generator

• Excellent eye quality, fast rise and fall time

• Built-in quarter-rate clock source (14.0 GHz)

• 1010, 1100, and 2

– 1 patterns

• 500 to 1000 mV, adjustable differential output

• Quarter and half rate clock outputs

• Pattern trigger output

Applications

• CEI 56G-VSR advanced research

• Characterizing 56 G, 40 G, and 25 G optical transceivers and

components

• General high speed serial link characterization

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