JDS Uniphase JDSU HA9 HA097+21KFP1 Programmable Attenuator

The JDS Uniphase JDSU HA9 HA097+21KFP1 is a programmable optical attenuator that delivers precise, fine-grained control of optical signal strength across telecommunications, fiber optic test, and laboratory applications. Operating across single-mode fiber, this instrument provides attenuation up to 100 dB with 0.01 dB resolution and ±0.03 dB typical accuracy. Front-panel keypad control, GPIB (IEEE 488.2), and RS232 interfaces with SCPI/HP8156A command compatibility enable flexible integration into automated test systems.

Low insertion loss, high return loss exceeding 60 dB, and minimal polarization-dependent loss preserve signal integrity across demanding measurement scenarios.

Technical Specifications

• Wavelength Range: 1200–1700 nm (750–1700 nm optional)


• Attenuation Range: Up to 100 dB


• Attenuation Resolution: 0.01 dB


• Attenuation Accuracy: ±0.03 dB typical


• Insertion Loss: 2.5 dB (including connectors)


• Return Loss: >60 dB


• Polarization Dependent Loss: Typically 0.03 dB


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


• Fiber Type: Single-mode (9/125 µm)


• Input Power: 200 mW


• Connector Options: SC/PC, FC/PC, ST (m)

Key Features

• High-resolution 0.01 dB attenuation steps for fine signal control


• Multiple control interfaces: front-panel keypad, GPIB, and RS232


• SCPI/HP8156A command compatibility for test automation


• Configurable with integrated couplers (2/98, 10/90, 30/70, 50/50) or 1×2 switch


• Minimal PDL and tight wavelength dependence for C-band and L-band operation

Typical Applications

• Bit error rate (BER) and receiver sensitivity testing


• Loss simulation in fiber optic link characterization


• EDFA output power and gain measurement


• Amplifier performance evaluation


• DWDM system and multichannel AM system testing


• High bit-rate PCM system validation


• Optical power meter calibration and testing

Compatibility & Integration The attenuator accepts command sequences via SCPI or HP8156A protocols, enabling direct integration with existing test frameworks. SC/PC, FC/PC, and ST connector options accommodate standard telecommunications infrastructure. Optional coupler and switch configurations extend functionality for tap-monitoring or dual-path measurement scenarios.