Fourteen Star Engineering

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BERTScope CR

BERTScope CR

The BERTScope Clock Recovery CR Series advanced architecture measures and displays the PLL frequency response from 100 kHz to 12 MHz; the highest loop bandwidth available for jitter testing on the market today. The first clock recovery instruments to allow full control of parameters including loop bandwidth, peaking/damping, and roll off.

Key performance specifications

  • 150 Mb/s to 28.6 Gb/s with continuous data rate coverage to include Next-generation I/Os including PCIe 3.0, 10GBASE-KR, 16xFC, 25/28 G CEI, and 100GBASE-LR-4/100GBASE-ER-4
  • Full and divided clock outputs with selectable divide ratios. Full-rate clock output up to 14.3 Gb/s, half-rate clock output from 14.3 Gb/s to 17.5 and 28.6 Gb/s
  • Optional PCIe 2.5, 5, and 8 gb/s PLL loop analysis (Also requires jitter analysis option)
  • CR175A and CR286A offer optional higher-sensitivity data inputs with clock recovery on signals as small as 40 mV amplitude (single ended), 20 mV amplitude (differential) – no DC-coupled data through path with this option

Key features

  • Instrumentation quality clock recovery
  • Accurate, variable loop bandwidth from 100 kHz to 12 MHz, with optional 24 MHz for the jitter transfer function (JTF) bandwidths of USB 3.0, SATA 6G, and PCIe Gen3
  • Accurate, adjustable, self-measured, and displayed PLL loop bandwidth, peaking, and JTF – get the "Golden PLL" response needed for standards compliance testing
  • Programmable peaking adjustment with first- and second-order roll-off capability
  • USB control interface integrated into BERTScope view, or stand-alone with included BERTScope PC software
  • DC-coupled data through path for accurate signal integrity
  • Full and divided clock outputs with selectable divide ratios. Full-rate clock output up to 14.3 Gb/s
  • Built-in equalizer function enables clock recovery under high ISI input conditions
  • Data measurement capability
  • Edge density measurement – determine the mark density of the signal under test
  • Spread spectrum clock waveform view including dF/dt
  • Ideal for spread spectrum clock (SSC) applications with large frequency excursions
  • Optional direct spectral analysis of jitter components when under USB control from BERTScope or on PC using provided stand-alone software.
  • Optional spectrum analyzer display with cursor measurements of jitter amplitude and frequency
  • User-settable frequency-gated measurements for band-limited integrated jitter optionally available
    • Preset band limits for PCI express Gen2 jitter spectrum

Applications

  • Design/Verification of high-speed I/O components and systems
  • Signal integrity analysis
  • Certification testing of serial data streams for industry standards