JDS Uniphase HA9 JDSU HA97+18KFA1 Programmable Attenuator

The JDS Uniphase HA97+18KFA1 is a programmable optical attenuator designed for precise control of optical signal levels in fiber optic networks. It delivers 100 dB of attenuation with 0.01 dB resolution and ±0.03 dB typical accuracy, making it suitable for demanding test and measurement applications across the C- and L-bands. The instrument supports both automated and manual adjustment via GPIB and RS232 interfaces, with command compatibility to the HP8156A standard.

Technical Specifications

• Attenuation Range: 100 dB


• Attenuation Resolution: 0.01 dB


• Attenuation Accuracy: ±0.03 dB typical


• Wavelength Range: 1200–1700 nm


• Insertion Loss: 2.5 dB (including connectors)


• Return Loss: 60 dB (analog)


• Repeatability: 0.01 dB


• Polarization Dependent Loss (PDL): 0.03 dB typical


• Wavelength Dependence: <±0.05 dB over 1530–1625 nm


• Maximum Optical Input Power: 1000 mW (1 W / 30 dBm) for HA2 models


• Fiber Type: Single-mode 9/125 µm; multimode configurable


• Connector Type: SC/PC; FC/APC available for specific configurations


• Control Interfaces: GPIB (IEEE 488.2), RS232


• Command Set: SCPI/HP8156A compatible

Key Features

• 0.01 dB resolution enables fine-grained power control in laboratory and field environments


• Wide dynamic range supports loss simulation and power conditioning across extended wavelength spans


• Bulkhead front-panel ports simplify integration into test racks and systems


• Optional integrated switching and coupler configurations (1×2 switch, beam block, 2/98, 10/90, 30/70, 50/50 couplers)


• Universal Connector Adapters (UCAs) available for diverse deployment scenarios

Typical Applications

• Power meter linearity calibration


• BER testing in analog and digital transmission systems


• EDFA output power characterization and amplifier testing


• DWDM system validation and loss simulation in fiber links


• Multichannel AM systems and high bit-rate PCM systems

Compatibility & Integration Certifications: CE, UL3101-1, CAN/CSA-C22.2 No. 1010.1. Remote control via standard GPIB and RS232 enables integration into automated test benches and network maintenance workflows.