JDS Uniphase JDSU HA9 HA09+20AFA1 Programmable Attenuator

The JDS Uniphase JDSU HA9 HA09+20AFA1 is a programmable optical attenuator that delivers precise, dynamic control of optical signal levels across extended attenuation ranges. Engineered for optical communication system testing, power meter calibration, and laboratory applications, this instrument combines broad dynamic range with fine resolution and excellent repeatability to support demanding measurement and validation workflows.

Technical Specifications

• Attenuation Range: Up to 100 dB (60 dB for optional HA9W extended wavelength)


• Attenuation Resolution: 0.01 dB


• Attenuation Repeatability: ±0.01 dB


• Attenuation Accuracy: ±0.1 dB (or greater of ±0.1 dB or ±0.004 dB/dB to ±0.015 dB/dB depending on calibration optimization and wavelength range)


• Attenuation Change Rate: <2.5 seconds for 0–100 dB transition


• Operating Wavelength Range: 1200–1700 nm standard; 750–1700 nm optional (HA9W)


• Insertion Loss: <1.5 dB single-mode; 45 dB single-mode


• Maximum Optical Input Power: 200 mW


• Polarization Dependent Loss (PDL): 0.03 dB typical; 0.08 dB maximum


• Wavelength Dependence: ±0.05 dB over specified ranges


• Beam Block Attenuation: >90 dB


• Power Requirements: 90–240 V AC, 50–60 Hz


• Power Consumption: 80 VA maximum

Key Features

• Built-in beam block switch for rapid access to infinite attenuation


• Calibration and offset functions enable display matching to external optical power meters


• Discrete optical reflections minimized to >60 dB; cavity effects virtually eliminated


• Front panel keyboard control with remote capability via GPIB (IEEE 488.2) and RS-232


• SCPI/HP8156A command compatibility with supplied LabVIEW drivers


• Configurable couplers (2/98, 10/90, 30/70, 50/50) and optional connector adapters


• Rear panel 5 V output for external switch driver integration

Typical Applications

• Optical power meter calibration and verification


• Dynamic range testing in optical communication systems


• Laboratory attenuation measurement and control


• CATV AM system characterization

Compatibility & Integration Software compatibility maintained with HP 8157A attenuator. Remote control via industry-standard GPIB and RS-232 interfaces supports integration into automated test systems.