The Agilent/HP 83485A is an optical plug-in module for the 86100A oscilloscope that extends measurement capabilities to high-speed optical communication signals. It combines one optical and one electrical channel to enable accurate waveform characterization and SONET/SDH compliance testing. The integrated optical input eliminates external cables and connectors, reducing mismatch loss and signal distortion.
Technical Specifications
Optical Channel
• Unfiltered Bandwidth: 12.4 GHz or 20 GHz
• Wavelength Range: 1000 nm to 1600 nm (user-calibrated 1200 nm to 1600 nm)
• Calibrated Wavelengths: 1310 nm and 1550 nm
• Transition Time (10%–90%): < 25 ps
• RMS Noise (characteristic): 8 μW at 12.4 GHz; 15 μW at 20 GHz
• Maximum RMS Noise: 12 μW at 12.4 GHz; 25 μW at 20 GHz
• Scale Factor: 20 μW/division to 500 μW/division
• CW Accuracy (single marker): ±25 μW ±2% (12.4 GHz) or ±4% (20 GHz) of reading, plus ±2%/°C temperature and –0.4%/hr drift
Electrical Channel
• Bandwidth: 12.4 GHz and 20 GHz
• Connector: 3.5 mm male input
Optical Input
• Fiber Type: 9/125 µm
– Key Features
• Switchable fourth-order Bessel-Thomson filter for selection between high-fidelity waveform capture and SONET/SDH compliance testing
• SONET/SDH reference receiver calibrated to ITU-TS G.957 and Bellcore GR-253-CORE
• User calibration support across 1200–1600 nm range using external source and power meter
• Options 030, 032, and 034 provide built-in reference receiver functionality for OC-3/STM-1 (155 Mb/s), OC-12/STM-4 (622 Mb/s), OC-48/STM-16 (2488 Mb/s), and OC-192/STM-64 (9953 Mb/s)
• Trigger input to mainframe
– Compatibility & Integration
Works with Agilent/HP 86100A, 86100B, 86100C oscilloscopes and 83480A Digital Communications Analyzer mainframe.
