The Agilent 83485A is a high-bandwidth optical/electrical plug-in module for Agilent Digital Communications Analyzer mainframes (83480A, 86100A/B/C, DCA-J, DCA-X). Designed for eye diagram and jitter analysis, this module delivers simultaneous optical and electrical signal acquisition across SONET/SDH transmission standards. With Options 034 or 012+034, the module integrates calibrated reference receivers and selectable filter configurations for rigorous transmitter compliance testing and network component evaluation.
Technical Specifications
Optical Channel
• Bandwidth: 20 GHz (unfiltered); selectable 12.4 GHz or 20 GHz modes
• Wavelength range: 1000–1600 nm or 1200–1600 nm (depends on configuration)
• Supported fiber: 9/125 µm single-mode
• Sensitivity (minimum power for mask test): −10 dBm
• Reference receiver rates: 0.155, 0.622, 2.488, 9.953 Gb/s
Electrical Channel
• Bandwidth: 12.4 GHz or 20 GHz (selectable)
• Input connectors: 3.5 mm male, 3.4 mm (M), or 2.4 mm male
Trigger Channel
• Limited Mode: DC to 100 MHz
• Normal Mode: DC to 2.5 GHz (40 mVpp @ 100 MHz to 200 mVpp @ 2.5 GHz)
• High Speed Mode (Option 100): 2.0–12 GHz typically (1–15 GHz range); 200 mVpp sensitivity
• Trigger level range: ±1 V
– Key Features
• Option 034: STM-16/OC-48 (2488 Mb/s) SONET/SDH reference receiver with fourth-order Bessel-Thomson filter; switchable via HP microwave relay
• Option 012+034: Dual-filter configuration combining STM-4/OC-12 (622 Mb/s) and STM-16/OC-48 receivers
• ITU-TS G.957 and Bellcore GR-253-CORE compliant
• User wavelength calibration (1200–1600 nm) with source and power meter
• 12.4 GHz mode optimizes oscilloscope noise performance; 20 GHz mode preserves signal fidelity
– Compatibility & Integration
Plug-in module format integrates directly into Agilent 83480A, 86100A, 86100B, 86100C, DCA-J, and DCA-X mainframes for turn-key optical/electrical measurements.
