The Exfo IQS 3100 BM EI is a benchtop variable optical attenuator (VOA) module engineered for precise optical signal power control in fiber optic testing and measurement. It delivers repeatable attenuation up to 100 dB with ±0.1 dB spectral uniformity and ultra-low insertion loss. The module supports both singlemode and multimode fiber, operating across broad wavelength ranges with programmable control via GPIB, Ethernet, or RS-232 when integrated with the IQS-500 chassis. Three attenuation modes—absolute, relative, and X+B reference—enable flexible measurement workflows, while a high-isolation shutter protects personnel and sensitive optical components. Integrated monitor output provides accurate power-level monitoring at the receiver end.
## Technical Specifications
• **Attenuation Range:** Up to 100 dB maximum
• **Spectral Uniformity:** ±0.1 dB
• **Insertion Loss:** Ultra-low
• **Attenuation Modes:** Absolute (includes insertion loss), relative (0.00 dB reference), X+B (variable reference)
• **Attenuation Steps:** Programmable sequences up to 100 steps
• **Wavelength Range (Singlemode):** 1200 to 1650 nm (measured at 1310 nm and 1550 nm)
• **Wavelength Range (Multimode):** 850 nm and 1300 nm
• **Monitor Output:** Available for receiver-end power monitoring
• **Optical Connectors:** FC/APC (singlemode), FC/PC (multimode); customization available
• **High-Isolation Shutter:** Included
## Key Features
• Programmable control with LabVIEW drivers, SCPI commands, and COM/DCOM libraries
• Remote operation via GPIB (IEEE-488.1, IEEE-488.2), Ethernet, and RS-232
• Supports 9/125 µm singlemode, 50/125 µm and 62.5/125 µm multimode fibers
• Repeatable attenuation stepping for automated test sequences
## Typical Applications
• Bit-error-rate (BER) testing
• EDFA characterization
• System or component loss simulation
• Instrument calibration and linearity measurement
• Optical margin analysis
• Transceiver testing and system verification
## Compatibility & Integration
The IQS 3100 BM EI integrates with the IQS-500 chassis for full remote control. Exfo Universal Interface (EUI) connector adapters are available separately for alternative fiber terminations.
