The JDS Uniphase HA9 (JDSU HA097+29KFP1) is a programmable optical attenuator delivering precise, dynamic control of optical signal strength across broad wavelength ranges. Purpose-built for optical communication system testing, measurement, and calibration, it provides attenuation up to 100 dB with 0.01 dB resolution and typical accuracy of ±0.03 dB.
Technical Specifications
Attenuation Performance
• Range: Up to 100 dB
• Resolution: 0.01 dB
• Accuracy (typical): ±0.03 dB
• Accuracy (specified): ±0.1 dB
• Insertion loss (typical, including connectors): 2.5 dB
• Insertion loss (minimum): 2.328 dB at 1550 nm
• Return loss: Better than 60 dB
Wavelength Coverage
• Standard range: 1200 nm to 1700 nm
• Extended range (HA9W option): 750 nm to 1700 nm (with 60 dB maximum attenuation)
Optical Interface
• Fiber type: Single-mode 9/125 µm
• Connectors: SC/PC, SC/APC, FC/PC; optional front or back panel universal connector adapters
• Port mounting: Front panel bulkheads
Control & Integration
• Front panel keyboard control
• GPIB (IEEE 488.2) interface
• RS232 interface
• Command set: SCPI / HP8156A compatible
– Key Features
• High input power capability: 200 mW maximum
• Built-in 1×2 optical switch
• Integrated optical couplers: 2/98, 10/90, 30/70, 50/50 ratios
• Beam blocking switch for fast access to >90 dB attenuation
• Class 1 instrument with exposed metal chassis and earth ground connection
– Typical Applications
• Power meter testing and calibration
• Bit error rate (BER) testing
• Amplifier characterization
• DWDM system validation
• Multi-channel AM system analysis
• High bit-rate PCM system evaluation
– Compatibility & Integration
The HA9 integrates with test benches via GPIB and RS232 interfaces. HP8156A command compatibility simplifies integration into existing measurement systems. Standard and extended wavelength options accommodate diverse fiber-optic applications from visible through C and L bands.
