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All – Ramin Farjadrad would like to propose the following text for transmit jitter (I’m just forwarding)
149.5.1 Test Modes
Modify Test Mode 2 as follows
Test mode 2: Transmit MDI Jitter in Master Mode
Test mode 2 is for transmitter jitter testing on MDI when transmitter is in MASTER timing mode. When test mode 2 is enabled, the PHY shall transmit a continuous pattern of JP03A (as specified in Clause 22.214.171.124) or JP03B (as specified in Clause 126.96.36.199) with the transmitted symbols timed from its local clock source.
188.8.131.52 Transmit Timing Jitter
Add the following to Transmit Timing Jitter
184.108.40.206.2 Transmit MDI Jitter in Master Mode
Jitter measurements in this subclause are performed with transmitter is enabled in Master timing mode with a local clock. To Measure Random Jitter in RMS (RJrms) and Deterministic Jitter (DJ) followsteps as specified in Clause 220.127.116.11.1, with following modifications:
fn =1MHz x s, T = 68ns/s (where s=1 @10G, s=0.5 @5G, s=0.25 @2.5G)
And for Even-odd jitter (EOJ) measurement follow steps as specified in Clause 18.104.22.168.2.
The calculated transmit timing jitters for RJrms, DJ, and EOJ from above measurements should be:
RJrms = 1ps/s, DJ = 9ps/s, EOJ = 4ps/ s (where s=1 @10G, s=0.5 @5G, s=0.25 @2.5G)
George A. Zimmerman, Ph.D.
President & Principal Consultant
CME Consulting, Inc.
Experts in PHYsical Layer Communications
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