The Keysight (Agilent) 4436A Optical Attenuator is a precision instrument for controlling optical power levels in fiber optic test and measurement applications. Originally manufactured by Hewlett-Packard and later by Agilent Technologies, the 4436A delivers accurate attenuation with repeatable performance across demanding calibration and characterization tasks. The product is now obsolete and no longer supported by Keysight Technologies, though technical documentation remains available for legacy system integration.
Technical Specifications
• Attenuation Range: 0 dB to 112 dB
• Step Resolution: 0.1 dB
• Impedance: 600 ohms
• Frequency Range: DC to 1.5 MHz
– Key Features
• Precise 0.1 dB step resolution for fine-grained power control
• Wide attenuation span from 0 dB to 112 dB
• Repeatable performance suitable for calibration work
• 600 ohm impedance configuration
– Typical Applications
• Calibrating optical power meters
• Testing optical communication systems
• Characterizing optical components and assemblies
• Laboratory fiber optic measurement setups
– Compatibility & Integration
The 4436A integrates with optical test systems designed for the Hewlett-Packard and Agilent era. Standard optical connector interfaces support integration into compatible legacy measurement platforms. As an obsolete product, the 4436A remains suitable for maintenance and repair of existing installations but should not be specified for new system designs.
