[ewg] FW: [CIWG] CIWG meeting will be on Thursday September 5th from 2-3 PM EST

[Rupert Dance]

Hello all,

 

I am forwarding this comment from Erdem Matoglu who works for Amphenol. He is concerned about the differences between the IBTA Spec and the IEEE Spec in regard to the HCB and the MCB.

 

Here are the documents he is referencing:

 

·         IBTA Spec: Table 176 of Volume 2 Version 1.3.1: https://cw.infinibandta.org/wg/EWG/documentRevision/download/7446

o   See Attached document for Page 561

·         IEEE Spec: P802d3bj_D2p1 – Section 92.11 - you need to have your own access to this spec.

·         EDR Compliance Test Results for HCB + MCB 090313: https://cw.infinibandta.org/wg/EWG/document/7532

 

Thanks

 

Rupert

 

From: Erdem Matoglu [mailto:Erdem.Matoglu at amphenol-tcs.com] 
Sent: Thursday, September 05, 2013 3:29 PM
To: Rupert Dance
Subject: Re: [CIWG] CIWG meeting will be on Thursday September 5th from 2-3 PM EST

 

Hi Rupert, 
Would you please take a look at Section 92.11 ? It seems to me that for the MCB, IEEE.3bj is more relaxed. 
For the HCB the IB requirement is more relaxed. Wilder is aiming for 2.2dB, but IEEE is asking for even lower loss. 
I think for the MCB the IEEE specification is doable. Even the attached presentation on Wilder HCB uses an MCB with 1.14dB IL. 
I also think that the HCB requirement and or the mated MCB-HCB requirement should somehow be relaxed in a controlled way for both standards. 

Regards,
Erdem




IBTA MCB

IEEE 802.3bj MCB

IBTA HCB

IEEE 802.3bj HCB


7.0312GHz

0.55dB

0.72dB

1.5dB

1.15dB


12.89GHz

0.84dB

1.17dB

2.2dB

1.87dB


Sincerely,

Erdem Matoglu, PhD
Senior Engineer - Signal Integrity
Amphenol High Speed Interconnects
200 Innovative Way, Suite 201
Nashua, NH 03062
Erdem.Matoglu at amphenol-tcs.com
603-879-3334 



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