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Keysight N4917BSCB 400G Optical Receiver Test Application User Guide
3
Concepts and Features of N4917BSCB Software
•
Rx sensitivity (not stressed) dependent on Tx SECQ
Contrary to the IEEE 802.3bs standard, the receiver sensitivity (not
stressed) is not defined by a single OMA value but dependent on the
transmitter SECQ used to measure the receiver sensitivity.
•
New multimode standards
The PAM4 multimode standards (-SR/SR2/SR4) defined in the IEEE
802.cd are not based on the 100GBASE-SR4 recommendations (clause
95) but have the following main differences:
•
Clean clock (instead of recovered clock)
•
No jitter calibration
