Exfo IQ-1643 4-Channel High-Speed Power Meter

The Exfo IQ-1643 is a 4-channel high-speed optical power meter engineered for simultaneous measurement across multiple fiber-optic signals. Built around InGaAs photodetectors, it delivers measurement ranges from 9 dBm to −85 dBm with ±0.25 dB accuracy and ±0.02 dB uncertainty. The instrument achieves stabilization times as fast as 1 ms in manual gain mode and up to 4096 samples per second in triggered high-speed acquisitions, supporting dynamic range up to 95 dB. Its low polarization-dependent response ensures reliable measurements across varying polarization states.

## Technical Specifications

• **Wavelength Range:** 800 nm to 1700 nm
• **Measurement Range:** 9 dBm to −85 dBm or 6 dBm to −85 dBm
• **Accuracy:** ±0.25 dB
• **Measurement Uncertainty:** ±0.02 dB
• **Resolution:** 0.01 dB
• **Linearity:** ±0.02 dB
• **Dynamic Range:** Up to 95 dB (automatic gain)
• **Sampling Rates:** 256 samples/second (continuous); 4096 samples/second (triggered high-speed)
• **Stabilization Time:** 1 ms (manual gain); 15 ms (automatic gain, up to 95 dB fluctuation)
• **Operating Temperature:** 0°C to 50°C
• **Detector Type:** InGaAs photodetectors
• **Dimensions:** 12 cm (H) × 3.8 cm (W) × 26.2 cm (D)

## Key Features

• Four simultaneous measurement channels with independent detector inputs
• Graphical display mode with real-time curve visualization (up to eight curves)
• Synchronized measurements via power level trigger and TTL voltage trigger (0–5 V input)
• Multiple connector support: FC, SC, ST, LC (FOA adapters available separately)
• USB data interface for automated test integration
• Low polarization-dependent response for consistent results across signal states

## Typical Applications

• WDM component characterization and validation
• Fiber-optic system monitoring and diagnostics
• Assembly line power verification and quality control
• Multi-channel optical signal assessment

## Compatibility & Integration

The IQ-1643 accepts standard single-mode and multimode fiber connectors with FOA adapter support. TTL trigger input (0–5 V) enables synchronization with external test equipment. USB connectivity facilitates integration into automated test environments and data logging systems.