Tektronix 80A07 BERTScope CR Variable Electrical Clock Recovery 100kHz – 12Mhz

The Tektronix 80A07 BERTScope CR is a modular clock recovery instrument that extracts clock signals from variable electrical sources across 100 kHz to 12 MHz. Engineered for compliance testing, jitter analysis, and signal integrity characterization, this module integrates into the BERTScope platform to support data rates from 50 Mb/s to 12.6 Gb/s (continuously variable 100 Mb/s to 12.5 Gb/s). The instrument delivers ultra-low residual jitter as low as 250 fsRMS and provides precise control over Phase-Locked Loop parameters including loop bandwidth, peaking, and roll-off. It uniquely tracks spread spectrum clocks with frequency excursions up to 5000 ppm and recovers clocks from stressed signals with high jitter and slew rate tolerance.

– Technical Specifications

Clock Recovery Performance
• PLL Frequency Response Measurement: 100 kHz to 12 MHz
• Tunable Loop Bandwidth: 100 kHz to 12 MHz
• Optional Jitter Transfer Function (JTF) Bandwidth: 24 MHz (USB 3.0, SATA 6G, PCIe Gen3)
• Programmable Peaking with first- and second-order roll-off
• Residual Jitter: As low as 250 fsRMS
• Spread Spectrum Clock (SSC) Tracking: Up to 5000 ppm frequency excursion
• Data Rate Support: 50 Mb/s to 12.6 Gb/s enumerated; 100 Mb/s to 12.5 Gb/s continuously variable
• Full-rate Clock Output: Up to 14.3 Gb/s
• Half-rate Clock Output: 14.3 Gb/s to 17.5 Gb/s and 28.6 Gb/s

Electrical Specifications
• Data Input Voltage Range: –5 V to +5 V
• Input Sensitivity: 100 mV single-ended (typical)
• Data Interface: 50 Ω differential or single-ended, DC coupled
• Data Insertion Loss: 2 dB (min), 2.6 dB (typical), 3 dB (max)
• Clock Outputs: 50 Ω single-ended
• Adapter Type: APC 3.5 (user-replaceable Planar Crown)

– Key Features

• High jitter tolerance and slew rate tolerance for signal recovery from degraded inputs
• Supports PCIe 3.0, 10GBASE-KR, 16xFC, 25/28 G CEI, and 100GBASE standards
• USB control interface integrated into BERTScope or via stand-alone PC software
• Extended data rate options up to 14.2 Gb/s and half-rate operation to 28.6 Gb/s

– Typical Applications

• High-speed digital communication system validation
• Serial standard compliance testing (PCIe, Fibre Channel, Ethernet)
• Jitter transfer function analysis and PLL characterization
• Clock recovery from spread spectrum clocked signals

– Compatibility & Integration

The 80A07 integrates into the Tektronix BERTScope measurement platform and supports remote control via USB device port for PC-based operation.