Keysight / Agilent / HP 83430A Lightwave Digital Source

The Keysight/Agilent/HP 83430A Lightwave Digital Source is a directly modulated DFB laser engineered for high-speed optical communication system testing. It converts digital and analog input signals into stable, accurate optical outputs for evaluating receivers and transceivers across SDH/SONET networks. The instrument delivers wavelength-selectable, directly modulated laser output with user-adjustable extinction ratio and supports data rates from 52 Mb/s to 2.488 Gb/s.

– Technical Specifications

Optical Output
• Laser Type: Directly modulated DFB
• Center Wavelength: 1310 nm, 1535 nm, 1539 nm, 1543 nm, 1546.2 nm, 1550 nm ±1 nm (standard), 1553.4 nm, 1557 nm, 1560.5 nm
• Wavelength Tuning: ±1.25 nm via front-panel temperature control (±10°C about 25°C)
• Peak Coupled Power (Digital): ≥1.3 mW (+1 dBm)
• Average Coupled Power (Analog): ≥0.63 mW (−2.0 dBm)
• Extinction Ratio: 10 dB ±1 dB, user-adjustable 8.2 dB to >13 dB
• Output Fiber: 9/125 µm single-mode
• Optical Interface: FC/PC connector (Diamond HMS-10 with universal adapter; other connectors available)

Modulation Performance
• Data Rates: 52, 155, 622, 2488 Mb/s (SDH/SONET OC-1 through OC-48)
• Modulation Bandwidth: 1.3 GHz (AC digital input), 70 MHz (analog input)
• Analog Input (AC Coupled): 0.1–2500 MHz, 2 V pk-pk max, 50 Ω impedance
• Digital Input (AC/DC Coupled): 50–2500 Mb/s, 0.7–1.5 V pk-pk, 50 Ω impedance
• Digital Threshold Adjustment: ±0.2 V for level symmetry
• Modulation Input Ports: Three separate (AC analog, AC digital, DC digital); Type N female connectors

– Key Features

• SDH/SONET compliant across OC-1 through OC-48 rates
• User-adjustable extinction ratio for link margin optimization
• Multiple wavelength options for C-band and O-band testing
• AC and DC-coupled digital inputs for flexible signal conditioning
• Laser Safety: 21 CFR 1040.10 Class 1, IEC 825-1 Class 1
• Weight: 4.9 kg

– Typical Applications

• Optical receiver characterization and performance evaluation
• Transceiver waveform testing and validation
• TDM and WDM system link analysis
• High-speed digital communication system diagnostics

– Compatibility & Integration

Combines with the Agilent 86130A Error Performance Analyzer and 86130A Lightwave Clock/Data Receiver for parametric test systems up to 2.5 Gb/s. Integrates with the 86100B Infiniium Digital Communications Analyzer for transceiver waveform testing.