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Re: [STDS-802-3-400G] 答复: [STDS-802-3-400G] Electrical Ad-Hoc Straw Poll

I support Option 4 but think we need to do some more work on the equation.  I wouldn’t support putting in the unmodified equation.

 

From: Richard Mellitz [mailto:richard.mellitz@xxxxxxxxx]
Sent: Wednesday, April 26, 2017 8:15 PM
To: STDS-802-3-400G@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-3-400G] 答复: [STDS-802-3-400G] Electrical Ad-Hoc Straw Poll

 

The measurement is at TP2 with test equipment. The intent is the test equipment has very low noise. 

... Rich

Sent from my iPhone


On Apr 26, 2017, at 10:30 PM, Yang Zhiwei <yang.zhiwei2@xxxxxxxxxx> wrote:

Hi Andre,

 

I vote for option2,

Besides were mentioned by Ali, It seems that the  "eta_0" parameter is set to 0 in COM table of the presentation of mellitz_01b_042417_elect . I suggest the penalty from One-sided noise spectral density should be included though it will not take a significant effect for 10dB C2M channel empirically. 

 

 

 

 

Best Regards!

Yang Zhiwei

ZTE

 

 

原始邮件

发件人： ＜aszczepanek@xxxxxxxxx＞;

收件人： ＜STDS-802-3-400G@xxxxxxxxxxxxxxxxx＞;

日 期 ：2017年04月26日 19:40

主 题 ：[STDS-802-3-400G] Electrical Ad-Hoc Straw Poll

 

At today’s P802.3bs Electrical Ad-Hoc meeting I announced we would have a straw poll on options for the C2M Insertion Loss equation based on discussion following the  presentation of mellitz_01b_042417_elect.

 

  1. Option 1: Do nothing
  2. Option 2:
    1. Change  “The supported insertion loss budget is characterized by Equation (120E–1) and illustrated in Figure 120E–4. “  to “The recommended insertion loss budget is characterized by Equation (120E–1) and illustrated in Figure 120E–4. “
    2. Add “recommended” to the title of Figure 120E-4.
  1. Option 3: Change the insertion loss equation to the equation given in Slide 14 “Option B” of mellitz_01b_042417_elect.
  2. Option 4: Implement the changes in both options 2 & 3 above.

 

Please send me an email specifying your preferred option (select only one).

  1. Don’t get hung up on exact values. This is a straw poll, nothing is definitive – we just want to establish a direction for the group.

 

Regards

                 Andre Szczepanek (Electrical Ad Hoc chair)