Agilent Technologies N4962A Podręcznik Użytkownika Pobierz pdf (Strona 18)

N4962A System Overview

Serial BERT 12.5 Gb/s User Guide

The PRBS generator creates a continuous bit stream triggered by the input

clock rate, configured by the selectable pattern length, mark space density,

data inversion, and error injection settings. The output is amplified by a

programmable gain stage.

The error detector compares the input to an automatically-synchronized bit

stream generated with the same system settings. The clock input features an

electronic phase adjuster to correctly align the clock and data sampling point.

The system settings can be set by the local push-button interface or remote

GPIB (IEEE 488.2) interface. All settings can be accessed through the menu

system or through GPIB commands. The N4962A is compatible with the

N4980A multi-instrument BERT software which is available through Agilent

Technologies to help speed up programming time.

2.1 Front Panel Quick Reference

Figure 3. N4962A front panel

Connectors

RECEIVER

: IN, IN¯¯ (SMA) – input to error detector (differential or single-ended)

SOURCE

: OUT, OUT¯¯¯ (2.92 mm K) – PRBS generator output (differential or

single

-ended)

Display

(display panel)

– eight-character display to show display status and configure

system

Error ε (light)

– indicates errors are being detected by the error detector

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Agilent Technologies N4962A Podręcznik Użytkownika Strona 18