Agilent / HP 83494A 9.953 Gb/s Single mode Clock Recovery Module

The Agilent/HP 83494A is a single-mode clock recovery module designed for high-speed optical signal analysis up to 9.953 Gb/s. This plug-in module recovers clock signals from optical data streams and regenerates data with exceptional timing precision, enabling accurate jitter and eye diagram characterization across SONET/SDH transmission rates. Operating across the 1200–1600 nm wavelength range, it accepts single-mode fiber (9/125 µm) and delivers recovered clock and regenerated data electrical outputs. The module supports multiple data rates including 0.155, 0.622, 2.488, and 9.953 Gb/s, with optional configurations for 10.3125 Gb/s or multirate operation to 10.709 Gb/s. The 83494A provides two triggering modes: internal PLL with 90 kHz bandwidth or external output with 4–5 MHz bandwidth, allowing data triggering for non-standard rates. Its mainframe trigger output delivers lower-jitter modulation bandwidth than the front-panel clock auxiliary output, providing enhanced visibility into waveform jitter characteristics.

– Technical Specifications

• Data Rates: 0.155, 0.622, 2.488, 9.953 Gb/s (standard); optional 10.3125 Gb/s or 2.666/10.709 Gb/s support
• Wavelength Range: 1200–1600 nm
• Input Power: −14 to +3 dBm (≤2.488 Gb/s); −8 to +3 dBm (≥9.953 Gb/s)
• Fiber Type: Single-mode (9/125 µm)
• PLL Bandwidth: 90 kHz (internal); 4–5 MHz (external output)
• Outputs: Recovered clock and regenerated data (electrical)
• Dimensions: 12 × 10 × 8 in; Weight: 10 lbs

– Key Features

• Direct clock derivation from signal under test when external trigger unavailable
• Dual-output architecture with mainframe trigger and front-panel clock outputs
• Data triggering capability for non-standard or slower transmission rates
• Supports long-haul and metro fiber system analysis

– Compatibility & Integration

Compatible with Agilent 86100A/B/C/D Infiniium DCA mainframes and 83480A Digital Communications Analyzer mainframes. Acceptable for use with multimode reference receivers (83486A) when single-mode fiber is connected to the module input.