Tektronix CR125A Tektronix CR125A Clock Recovery Unit for BERTScopeThe Tektronix Clock Recovery BERTScope CR286A is designed to support emerging high-speed standards such as 100 Gb Ethernet (100 GbE), which operates at a line rate of 25.78125 Gb/s. The Tektronix CR286A goes a step further with a maximum data rate of 28.6 Gb/s to support OIF-CEI 28G. These instruments have all the core features of the Tektronix CR125A, the award-winning BERTScope clock recovery product, with extended locking range to 26 and 28.6 Gb/sMany coThe BERTScope 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 rolloff.mmunication standards now specify that jitter testing must be carried out using a reference clock that has been derived from the data signal. Typical Phase Lock Loop (PLL) characteristics are specified in terms of the –3 dB bandwidth of the recovery loop, the rate of rolloff of the frequency response, and the degree of response peaking allowable.Design and test engineers can now find and lock onto signals of undefined or unknown data rate. The engineer can recover full-rate clocks, including spread spectrum clocks, for signals at data rates from 150 Mb/s to 12.5 Gb/s, and 14.2 Gb/s with extended data rate option. The engineer has full control of key parameters for variable loop bandwidth, peaking/damping and first- and second-order rolloffs, optimizing jitter tracking. Features and Specifications of the Tektronix CR125A includes:

• Instrumentation Quality Clock Recovery
• 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
• 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 Rolloff Capability

• Tektronix CR125A - Datasheet (2 Mo)