The Agilent/Keysight 11982A is an amplified lightwave converter that transforms optical signals into electrical outputs for high-performance measurement and characterization of lightwave systems and components. It combines a PIN photodetector with a low-noise, DC-coupled preamplifier to deliver a versatile analog front-end suitable for both frequency-domain and time-domain analysis across a broad optical spectrum.
Technical Specifications
Optical Performance
• Wavelength range: 1200 nm to 1600 nm
• Optical bandwidth: DC to 15 GHz
• Impulse response (FWHM): 29.4 ps
• Input optical reflection: 0.05%
• Maximum safe optical input power: 10 mW (+10 dBm) average
• Maximum operating optical input power: 1.5 mW (+1.76 dBm) peak
Electrical Performance
• Conversion gain: 300 V/W
• Output voltage range: > 700 mV into 50 ohms
• Output offset voltage: 11 dB (0.1 to 12 GHz)
• Output harmonic distortion: > 41 dB below fundamental (output < –10 dBm)
• Waveform aberrations: < 20% peak-to-peak
Connectors & Physical
• Optical input: Single Mode Fiber connectors (Diamond HMS 10, FC/PC, ST, DIN)
• Electrical output: APC 3.5 male, 50 ohms nominal
• Dimensions: 368 mm × 213 mm × 102 mm; 3.76 kg
• Operating temperature: 0°C to +55°C
• Storage temperature: -40°C to +75°C
• Relative humidity: up to 95% (40°C ambient)
• Power supply: 100–240 V (±10%), 47–63 Hz; < 75 VA consumption
– Key Features
• Low-noise preamplifier with DC coupling enables direct measurement of optical modulation
• Minimal output offset (< 1 mV) suitable for precision analog measurements
• High gain (300 V/W) supports detection of weak optical signals
• Electrical output impedance matched to 50 ohms for direct connection to standard instrumentation
• Calibration chart included with each unit for frequency response and responsivity reference
– Typical Applications
• Optical modulation analysis and eye diagram measurement
• High-speed optical communication system characterization
• Lightwave component testing and validation
• Time-domain and frequency-domain optical signal analysis
– Compatibility & Integration
The 11982A integrates directly with Agilent/Keysight spectrum analyzers, oscilloscopes, bit-error-rate testers, and network analyzers. Optional accessories include the 11980A Fiber-Optic Interferometer, 11742A Blocking Capacitor, 87441 Family SDH/SONET/Fibre Channel Filters, and 81000xI Series optical interface connectors.
