The JDSU HA9/HA1 Programmable Attenuator series delivers precise optical signal level control for communications, test and measurement, and R&D applications. These units combine wide attenuation range, high accuracy, and low insertion loss to enable critical optical performance evaluation and system calibration. Programmable via GPIB or RS232 with SCPI/HP8156A-compatible commands, the HA9/HA1 supports both local front-panel control and remote operation. Field-proven construction ensures repeatable performance across demanding test environments.
Technical Specifications
• Attenuation Range: Up to 100 dB (60 dB for HA9W, 750–1700 nm)
• Resolution: HA9 series 0.01 dB; HA1 series 0.001 dB
• Accuracy: ±0.1 dB or greater of ±0.004 dB/dB (1260–1360 nm and 1450–1570 nm); otherwise ±0.1 dB or ±0.015 dB/dB
• Repeatability: 0.01 dB
• Wavelength Range: 1200–1700 nm standard; optional 750–1700 nm
• Wavelength Dependence: 60 dB
• Input Power: Up to 1 W (30 dBm)
• Beam Blocking: Integrated switch provides >90 dB attenuation
– Key Features
• Single-mode (9/125 µm) and multimode fiber options
• FC/PC, SC/PC, ST/PC, FC/APC, SC/APC connector adapters
• Front or rear panel mounted universal connector adapters
• 5 V driver output for external 1×1 or 1×2 fiberoptic switch control
• Low spectral ripple design suitable for CATV AM systems
– Interfaces & Control
• GPIB (IEEE 488.2) and RS232 remote control
• SCPI/HP8156A command compatibility; software compatible with HP 8157A
• Front panel keyboard for local operation
• Rear panel 5 V output with front panel toggle for external/internal switch selection
– Typical Applications
Optical communications system calibration, component performance validation, optical power level adjustment, and research environments requiring high-resolution attenuation control.
