The Agilent/Keysight 81542MM is a multimode optical source module that generates stable 1300 nm LED output for integration into Agilent/Keysight 8153A and 8163A mainframe systems. This module delivers precise optical signal generation across 50/125 µm multimode fiber environments, supporting both continuous-wave and modulated operation with selectable internal digital modes.
Technical Specifications
• Light Source: LED
• Central Wavelength: 1300 nm ±40 nm
• Spectral Bandwidth (FWHM): –20 dBm minimum
• Short-term Stability (15 min, constant temperature): ±0.002 dB
• Long-term Stability (6 hours, constant temperature): ±0.01 dB
• Output Attenuation Range: 0 to 6 dB
• Modulation Modes: 270 Hz, 1 kHz, 2 kHz (internal digital, selectable)
• Pulse Duty Cycle: 50%
– Key Features
• Selectable internal digital modulation at three fixed frequencies for flexible test scenarios
• Exceptionally tight short-term output stability of ±0.002 dB enables repeatable measurements
• Adjustable attenuation from 0 to 6 dB provides dynamic optical power control without external attenuators
• Pulse-shaped output with 50% duty cycle ensures consistent signal conditioning for modulation testing
• Broad spectral bandwidth of <90 nm accommodates multimode fiber dispersion characteristics
– Typical Applications
• Multimode optical link characterization and loss budgeting
• LED source substitution in 1300 nm measurement systems
• Power stability verification in optical test configurations
• Digital modulation testing at low frequencies (270 Hz to 2 kHz)
• Attenuation measurement validation across 0 to 6 dB range
– Compatibility & Integration
The 81542MM installs directly into Agilent/Keysight 8153A and 8163A mainframes via standard Agilent optical interface (connectors ordered separately). Physical dimensions are 12 × 10 × 8 in with a weight of 10 lbs.
