The Agilent/Keysight N1077B is a high-performance clock recovery module that extracts precise timing signals from high-speed electrical and optical data streams. Operating across 125 MBd to 64 GBd, it supports NRZ and PAM4 signal formats and integrates a standards-compliant phase-locked loop (PLL) for reliable lock acquisition on both open-eye and degraded signals. The module delivers recovered clock outputs from 8 GHz to 16 GHz, serving as a timing reference for oscilloscopes and BERT systems in optical communications, high-speed digital design, and compliance testing.
Technical Specifications
Data Rate Coverage
• 125 MBd to 64 GBd continuous operation
• NRZ and PAM4 signal support
• Specific options support narrower ranges, including 125 MBd to 32 GBd, 24 GBd to 29 GBd, and 125 MBd to 16 GBd configurations
Input & Output Interfaces
• Electrical: Single-ended and differential data inputs
• Optical: Multimode and single-mode input connectors
• Recovered Clock Output: 8 GHz to 16 GHz auxiliary output range
Acquisition Performance
• Minimum input level to lock (NRZ/PAM4, single-ended, open eye):
– Option 264: 30 mV pp (≤53.125 GBd), 60 mV pp (>53.125 GBd)
– Option 253: 60 mV pp
– Option 216: 125 MBd to 16 GBd range
– Option 225: 24 GBd to 29 GBd range
– Key Features
• Adjustable peaking and loop bandwidth up to 20 MHz
• Integrated equalizer (Option EVA) enables locking onto closed-eye signals
• Jitter Spectrum Analysis (Option JSA) for root cause assessment
• Compatibility with N1010300A FlexPLL Application software and N1081PLCA PCI Express PLL Test Application for standards-compliant bandwidth and peaking measurements
– Typical Applications
• Optical communications testing and validation
• High-speed digital design verification
• Compliance testing for advanced standards
• Jitter characterization and analysis
– Compatibility & Integration
Mounts in DCA-M oscilloscopes and integrates with N1000A DCA-X and N1090A, N1092-series, N1094-series DCA-M platforms. Control via USB connection to N1000A or 86100D DCA-X mainframes or PC-based N1010A FlexDCA software. Requires FlexDCA firmware version A.06.90 or above.
