The Agilent/Keysight 71451B is a diffraction-grating-based optical spectrum analyzer engineered for precise spectral measurements of optical power versus wavelength across the visible and near-infrared spectrum. Built around a unique double-pass monochromator architecture, it delivers real-time sweep capability with -90 dBm sensitivity and 60 dB dynamic range, making it ideal for characterizing optical components, amplifiers, LEDs, and lasers in network testing and R&D environments.
Technical Specifications
• Wavelength Range: 600 nm to 1700 nm
• Wavelength Accuracy: ±0.3 nm
• Sensitivity: -90 dBm
• Dynamic Range: 60 dB
• Maximum Measurable Power Level: +10 dBm (before compression)
• Maximum Safe Photodetector Input: +20 dBm
• Maximum Input Power (MONOCHROMATOR INPUT): +30 dBm
• Amplitude Flatness (≥2 dBm input): ±0.4 dB
• Amplitude Accuracy: Excellent
• Polarization Dependence: Low
• Span Range: 0.2 nm to full range, zero span supported
• Operating Temperature: 0°C to 55°C
• Relative Humidity: <95%
• Dimensions: 24 × 20 × 16 in
• Weight: 50 lbs
– Key Features
• Double-pass monochromator design for enhanced spectral purity
• Real-time sweep rates for dynamic signal observation
• Low polarization dependence minimizes measurement artifacts
• External trigger capability via rear-panel EXT TRIG IN connector for gated sweep operation
• Monochromator output connector enables external signal routing
• Includes HP 70951B module
– Optical Interfaces
• Front-panel MONOCHROMATOR INPUT connector (primary signal input)
• Front-panel MONOCHROMATOR OUTPUT connector (external monochromator output)
• Rear-panel EXT TRIG IN for external triggering
– Operating Requirements
Specifications apply after 1 hour thermal stabilization and completion of auto-align routine. Avoid thermal shock to prevent condensation. Proper earth grounding and ESD precautions required at rear-panel connectors.
