HP / Agilent 81533B Interface module for 8153A

The HP/Agilent 81533B is an Optical Head Interface Module that provides the electrical interface between HP Agilent 815xx series optical heads and mainframe units. It enables mainframe control and communication with connected optical sensors for precise optical measurements across multiple wavelength ranges and power levels.

– Technical Specifications

Analog Output Characteristics:
• Bandwidth: DC to 300 Hz up to 1000 Hz (dependent on connected optical head and selected range)
• Output Voltage: 0–2 V into open circuit
• Output Impedance: Typically 600 Ω
• Maximum Input Voltage: ±10 V

Optical Head Compatibility:
• HP 81520A (Si, 5 mm sensor; 450–1020 nm; +10 dBm to −100 dBm; ±4% ±0.5 pW total uncertainty at 600–1020 nm; 20 minute warm-up)
• HP 81521B (Ge, 5 mm sensor; 900–1700 nm; +3 dBm to −80 dBm; 20 minute warm-up)
• HP 81524A (950–1650 nm)
• HP 81525A (950–1650 nm)

Environmental Specifications:
All supported optical heads operate at 0 °C to +40 °C. Optical head weight: 0.45 kg (1.0 lbs) each.

– Key Features

• BNC connector for analog signal output
• Interface compatibility with HP 81520A, 81521B, 81524A, and 81525A optical heads
• Multi-wavelength sensor support spanning 450 nm to 1700 nm
• Wide dynamic range measurement capability from +10 dBm down to −100 dBm
• Single module serves multiple mainframe platforms

– Compatibility & Integration

Mainframe Support:
• HP 8153A Lightwave Multimeter
• Agilent 8163 series
• Agilent 8164 series

The 81533B integrates into existing test environments, eliminating the need for separate interface modules when deploying multiple optical heads across compatible mainframe units.