The JDS Uniphase HA91C-10KSC7 is a programmable optical attenuator that delivers precise optical power control across the 750–1700 nm wavelength range. Part of the HA9 Series, this instrument provides 0–100 dB attenuation with 0.01 dB resolution and ±0.1 dB accuracy, making it essential for demanding test environments where stability and repeatability matter. The built-in beam block enables rapid transition to infinite attenuation (>90 dB) from any setting, while typical polarization-dependent loss of 0.03 dB and insertion loss under 2.2 dB ensure minimal signal degradation. Maximum input power handling is 200 mW.
## Technical Specifications
• **Attenuation Range:** 0–100 dB
• **Resolution:** 0.01 dB
• **Repeatability:** 0.01 dB
• **Accuracy:** ±0.1 dB
• **Wavelength Range:** 750–1700 nm
• **Insertion Loss:** <2.2 dB (with JDS PS3); typically 60 dB (discrete internal optical reflections)
• **Polarization Dependent Loss (PDL):** 0.03 dB typical
• **Maximum Input Power:** 200 mW
• **Coupler Options:** 50/50, 2/98, 10/90, 30/70
• **Fiber Type:** Multimode 50/125 µm
• **Connectors:** SC/PC
## Key Features
• Built-in beam block for fast access to >90 dB attenuation
• GPIB (IEEE 488.2) and RS232 control interfaces
• Front panel keypad and remote operation capability
• SCPI/HP8156A command set compatibility
• Class 1 instrument classification
## Typical Applications
• Power meter testing and linearity calibration
• Loss simulation in fiberoptic links
• EDFA output power characterization
• Analog transmission tests
• Bit error rate testing
• Multichannel AM systems
• High bit-rate PCM systems
## Compatibility & Integration
The HA91C-10KSC7 integrates into laboratory and production test environments via GPIB and RS232 interfaces. Command compatibility with SCPI and HP8156A standards streamlines integration with existing test automation frameworks.
