The HP/Agilent 83485A is a dual-channel plug-in module that combines optical and electrical measurement capability in a single instrument. It delivers 30 GHz optical bandwidth and 40 GHz electrical bandwidth, making it suitable for high-speed digital communications characterization. By integrating both channels, the module minimizes mismatch loss and signal distortion inherent in external cabling setups.
Technical Specifications
Optical Channel
• Bandwidth: Up to 30 GHz (20 GHz unfiltered)
• Wavelength range: 1000–1600 nm
• Input: 9/125 µm single-mode fiber
• Average power monitor: –30 dBm to 0 dBm (1 µW to 2 mW)
• Maximum specified peak input power: 0.4 mW (–4 dBm)
• Maximum safe input: 10 mW peak
• Switchable filters for SONET/SDH rates: 155 Mb/s (STM-1/OC-3), 622 Mb/s (STM-4/OC-12), 2.488 Gb/s (STM-16/OC-48), 9.953 Gb/s (STM-64/OC-192)
• Reference receiver support: 0.155, 0.622, 2.488, 9.953 Gb/s
Electrical Channel
• Bandwidth: Up to 40 GHz
• Selectable bandwidth modes: 12.4 GHz, 20 GHz, 40 GHz
• Connectors: 3.5 mm male, 2.4 mm male inputs
• SONET/SDH reference receiver: Compliant with ITU-TS G.957 and Bellcore GR-253-CORE
– Key Features
• Two-channel architecture—optical and electrical—eliminates external cable interconnects
• Integrated average power monitoring with wide dynamic range
• Switchable optical filters for standards-compliant SONET/SDH transmission analysis
• Dual electrical bandwidth modes for flexible measurement configuration
• Trigger channel input available to mainframe
– Typical Applications
• Optical transceiver characterization (1000–1600 nm)
• SONET/SDH transmitter compliance testing
• High-speed digital communications waveform analysis
• Back-to-back optical-to-electrical measurement
– Compatibility & Integration
The module inserts into Agilent 83480A Digital Communications Analyzer or Agilent/Keysight 86100A/B/C Infiniium DCA/DCA-J mainframes.
