Product Description
The Keysight 81618A is a single‑channel optical head interface module that connects 8162x series optical heads (e.g., 81620B, 81623B, 81624B, 81626B, 81628B) to the 8163A/B, 8164A/B, or 8166A/B mainframes for precise optical power measurement. Although discontinued, it remains widely used in fiber‑optic communications and component testing.
Key Features
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Broad Compatibility: Fully compatible with all 8162x optical heads and works with 8163, 8164, and 8166 series mainframes, supporting various head models.
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Single‑Channel Design: Provides a one‑channel interface, simplifying wiring; a dual‑channel version (81619A) is available for multi‑head setups.
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Wide Power Range: Combined with different heads, it covers a measurement span from +40 dBm down to –90 dBm, suitable for low‑ to high‑power optical signals.
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High‑Frequency Performance: Supports up to 8.5 GHz signal generation with a 1 GHz modulation bandwidth per channel, ideal for 802.3ck and PCIe 6.0 design testing.
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Modular Flexibility: Offers both single‑ and dual‑channel options, allowing flexible system configuration according to test requirements.
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Environmental Robustness: Operates from 0 °C to 40 °C, humidity ≤80 %, and altitude up to 2000 m, providing good tolerance to varied environments.
