Agilent/Keysight 70951A – Optical Spectrum Analyzer Module

The Agilent/Keysight 70951A is a plug-in optical spectrum analyzer module for the 70000 series modular measurement systems. It delivers spectral analysis of optical power versus wavelength across a wide spectral window, enabling precise characterization of optical components, amplifiers, LEDs, DFB lasers, and Fabry-Perot lasers. The half-width module format integrates into standard EIA rack mainframes with full MSIB and GPIB control.

Technical Specifications

• Wavelength Range: 600 nm to 1700 nm


• Resolution Accuracy: ±20% for wavelengths greater than 0.5 nm between 1250 nm and 1600 nm


• Dynamic Range: -55 dBm at 0.5 nm from the peak


• Sensitivity: Better than -85 dBm


• Operating Temperature: 0° to +55° C


• Storage Temperature: -30° to +71° C


• Module Weight: 8 kg (17.6 lb)


• Environmental Compliance: MIL-T-28800D class 5 shock and vibration; CISPR Pub. 11 and MIL-STD 461B EMI standards

Key Features

• Half-width module format fits directly into 70000 series mainframes


• Modular System Interface Bus (MSIB) and GPIB connectivity for automated control


• Integral bails and handles support both benchtop and rack-mount operation


• Optional ADC Sync and Pulsed Current capability (Option 001)


• Built-in White Light Source available (Option 002)


• Calibration service available

Typical Applications

• Spectral power measurements versus wavelength


• Optical component characterization


• Optical amplifier analysis


• LED, DFB laser, and Fabry-Perot laser measurement

Compatibility & Integration Designed for integration into Agilent/Keysight 70000 series mainframes including the 70004A display and 70001A mainframe. The module receives power, cooling, and digital communication through the host mainframe. MSIB provides high-speed inter-module communication; GPIB enables remote instrument control and data acquisition.