81492A 参考发射器旨在为波特率高达 56 Gbaud 的 NRZ 和 PAM4 信号提供出色的眼图质量，并可用作通用单模 E/O 转换器。除了 1310 和 1550 nm 的内部激光器外，还提供用于可调谐激光源的外部光学输入。它完全集成到是德科技的光接收机压力测试解决方案中，以满足 IEEE 802.3 10、40、100 和 400GBASE 光标准的测试要求
特性：
The 81492A reference transmitter is designed to provide excellent eye-diagram quality for NRZ and PAM4 signals up to 56 Gbaud and can be used as a general purpose single-mode E/O converter. In addition to the internal lasers at 1310 and 1550 nm, external optical inputs for tunable laser sources are also available. It is fully integrated into Keysight's optical receiver stress test solutions to meet the test requirements of IEEE 802.3 10, 40, 100 and 400GBASE optical standards
characteristic:
40 GHz @ 1310 nm GHz typical electro-optical bandwidth
Optical wavelengths: 1310 nm and 1550 nm single-mode fiber
Rise and Fall Time: < 9 ps (typ)
Jitter: < 400 ps rms or < 6.5 ps pp typical
TDEC at 53.125 Gb/s NRZ: < 1.5 typical at 1310 nm
TDECQ for 53.125 Gbaud PAM4: < 2.4 typical at 1310 nm or < 2.1 typical at 1550 nm
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