Clock Recovery Instrument

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 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.

Notice to EU customers

This product is not updated to comply with the RoHS 2 Directive 2011/65/

EU and will not be shipped to the EU. Customers may be able to purchase

products from inventory that were placed on the EU market prior to

July 22, 2017 until supplies are depleted. Tektronix is committed to helping

you with your solution needs. Please contact your local sales

representative for further assistance or to determine if alternative product(s)

are available. Tektronix will continue service to the end of worldwide

support life.

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

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