Low-cost sampling-scope test systems for 25/100/400 Gb/sec optical links

March 23, 2016 // By Graham Prophet
Keysight Technologies’ N1092A, N1092B and N1092D DCA-M sampling oscilloscopes are, the T&M suppliers says, ideal for 25/100/400 Gb/sec optical test. Networks of 100 and 400 Gb/sec rely on multiple-lane transmitters based on 25 Gb/sec class lasers. As these technologies become mainstream and transition to high-volume manufacturing, there is a growing need for test systems that provide high accuracy at a low cost.

The N1092X DCA-M is a sampling oscilloscope family designed to perform compliance tests quickly and accurately. New low-noise, low-jitter technology allows measurement of low-power, high data rate NRZ and PAM-4 devices that could not be performed with any other solution. The N1092X oscilloscopes’ FlexDCA user interface is identical to that used in the 86100D DCA-X sampling oscilloscope, allowing a drop-in replacement for existing test systems, but with substantially faster throughput, a much smaller footprint and more than double the sensitivity.

Keysight’s Dave Cipriani, vice president and general manager of oscilloscope business, cites a, “different approach to testing optical transmitters...[enabling]...customers to make high-quality products at lower prices while not sacrificing accuracy for cost. This is reflected in the big gains we made in noise and jitter reduction while providing substantially higher throughput. As we transition to PAM-4 technologies, these performance improvements should prove to be even more valuable.”


The N1092X Series is available in three model numbers to fit a variety of applications and budgets. The N1092A has one optical channel, the N1092B has two optical channels and the N1092D has four optical channels. Channels have calibrated reference receivers for industry-standard compliance test from 20 to 28 Gb/sec rates and are compatible with single-mode and multimode fibres and wavelengths. The oscilloscopes’ costs are approximately half of existing systems with comparable performance.


Keysight; www.keysight.com/find/N1092A, www.keysight.com/find/N1092B and www.keysight.com/find/N1092D.