The HP/Agilent 83485B is a dual-channel plug-in module that integrates 30 GHz optical and 40 GHz electrical measurement capabilities into a single instrument. Designed for the Agilent/Keysight mainframe ecosystem, it supports data rates to 9.953 Gb/s and delivers waveform analysis, eye-diagram characterization, and jitter measurement for optical communications, transceiver validation, and high-speed digital design.
## Technical Specifications
**Optical Channel**
• Bandwidth: 30 GHz
• Wavelength range: 1000–1600 nm (calibrated at 1310 nm and 1550 nm; user calibration available 1200–1600 nm)
• Fiber type: 9/125 single-mode
• Sensitivity: −8 dBm
• Reference receiver capability: 9.953 Gb/s with integrated 10 Gb/s optical filtered channel
• Integrated optical path minimizes signal distortion from external cabling
**Electrical Channel**
• Bandwidth: 40 GHz (18 GHz reduced-bandwidth mode for improved noise performance)
• Input connectors: 2.4 mm male or 3.5 mm (sold separately)
• Compatible with external optical receivers
**Data Rate Support:** Up to 9.953 Gb/s
## Key Features
• Switchable SDH/SONET filter for transceiver compliance testing
• Eye-diagram analysis with extinction-ratio measurements
• Integrated average optical power meter
• User-defined masks and custom templates for compliance validation
• Trigger channel input with selectable modes: Normal, High-sensitivity, and Bandwidth limit
• Fourth-order filter 10 Gb/s reference receiver (Option 040)
## Measurement Capabilities
Waveform analysis, eye-diagram characterization, extinction-ratio measurement, jitter analysis (with compatible mainframes), and optical power monitoring.
## Compatibility & Integration
Plug-in module compatible with the Agilent 83480A Digital Communications Analyzer, Agilent 86100A/B/C Infiniium DCA/DCA-J mainframes, and 54750A mainframe (with Option 002 firmware). Optional DIN 47256 optical interface available (Option 013).
