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N4965A Multi-Channel BERT 12.5 Gb/s

Data Sheets

Product Highlights

Modular architecture supports 1 to 5 pattern generator or errordetector heads Pattern generators with integrated two or four tap de-emphasis Transparent jitter pass-through from external clock source Swept aggressor channel delay for crosstalk characterization Single port remote control of all channels through USB or GPIB Compact size

A Better Solution When One Channel is Just Not Enough…

The N4965A multi-channel BERT is a modular, multi-channel signal integrity test system ideal for characterizing multi-lane serial data channels. By adding remotely mountable heads, each of its 5 channels can be configured as either a pattern generator, or error detector to form a bit error rate tester (BERT). Patterns available include various lengths of hardware generated PRBS, clock patterns, and DC logic 0 and logic 1. All heads can operate with differential or single ended signal connections. Output parameters in the pattern generator heads and input parameters in the error detector heads can be independently programmed, or ganged together for convenience. Presets for common logic families simplify user set up.

Independent Generator and Detector Heads

Each remote head connects to the N4965A multi-channel BERT controller through a 1 m control cable. This allows the remote head to be located near the signal connection points in the device under test, minimizing cable loss, and maintaining signal integrity. The modular architecture of the N4965A allows you to purchase only the remote heads your application requires. No need to spend more on unused output or input channels.

Integrated De-Emphasis

Pattern generator heads include integrated two-tap or four-tap de-emphasis conditioning. Commonly used in higher data rate systems to open eyes by counteracting high frequency loss in the channel, applying de-emphasis to the test signal is required for receiver testing. Other vendors’ generators require additional dedicated external signal processors. The internal de-emphasis conditioning in the N4955A pattern generator heads eliminates the expense of additional signal processors, as well as the associated signal degradation resulting from the extra cables used to connect them.

Control Interface and Analysis Software

Controlling multiple pattern generators or signal sources for characterizing mutli-lane devices or cross talk is cumbersome and confusing. In addition to the need to address multiple instruments, the command syntax or user interface usually differs. The N4980A multi-instrument BERT software application provides users the ability to control multiple Keysight Technologies, Inc. instruments through a graphical user interface (GUI).

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