Agilent/Keysight 70810A – Spectrum Analyzer Module

The Agilent/Keysight 70810A is a 1/8-width lightwave section module that extends modular spectrum analyzer systems into the optical domain. It detects and displays intensity modulation on lightwave signals transmitted over single-mode optical fiber, operating across the 1200 nm to 1600 nm wavelength range (750 nm to 870 nm with Option 850). The module processes modulation bandwidths from 100 kHz to 22 GHz with input noise equivalent power of -64 dBm/root Hz.

– Technical Specifications

• Wavelength Range: 1200 nm to 1600 nm (standard); 750 nm to 870 nm (Option 850)
• Detected Modulation Bandwidth: 100 kHz to 22 GHz
• Input Noise Equivalent Power: -64 dBm/root Hz
• Optical Attenuation: 0 to 30 dB in 1 dB steps (manual attenuator)
• Form Factor: 1/8-width module
• Input Connectors: Optical input connector, electrical input connector
• Communication Interfaces: HP-IB, HP-MSIB
• Operating Modes: Standard slave module or independent stand-alone operation

– Key Features

• Manual optical attenuator with 1 dB step resolution enables precise signal level control
• RF bypass mode allows direct RF input-to-output connection, bypassing the optical attenuator
• Modular design integrates into larger spectrum analyzer systems or operates independently
• Low input noise floor supports detection of weak optical modulation signals

– Typical Applications

• Optical signal modulation analysis on single-mode fiber links
• Integration with fixed-wavelength or tunable laser sources for signal characterization
• Insertion loss and return loss measurements when combined with 8163B mainframe, power sensor, and calibrated reference cable
• Lightwave component testing in modular test configurations

– Compatibility & Integration

The 70810A integrates into HP 71100C and HP 71210C spectrum analyzers, HP 70000 Series modular systems, and 816x lightwave mainframes. It is fully compatible with the 8163B mainframe for enhanced measurement capability. Installation Category II; Pollution Degree 2. Requires grounded power cable and adequate ventilation—forced convection is mandatory if total cabinet power dissipation exceeds 800 watts.