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RE: [802.3af] RE: Single port insertion time issue.

Brian & Yair,

I agree with your conclusion as well.  The standard should restrict
itself to signals that are present on the ethernet cable - i.e. at the
PSE output port or PD input port. how a particular PD manufacturer
chooses to sequence the power-up of the PD's internal voltage rails is
outside the scope of the standard.

Tony Bayley
Principal Hardware Engineer

Bluesocket Limited, 1100 Parkway, 
Solent Business Park, Whiteley, Fareham
Hampshire. PO15 7AB. United Kingdom.
Email: tbayley@xxxxxxxxxxxxxx
Tel: +44 (0)1489 611698
Fax: +44 (0)1489 611612

-----Original Message-----
From: owner-stds-802-3-pwrviamdi@xxxxxxxxxxxxxxxxxx
[mailto:owner-stds-802-3-pwrviamdi@xxxxxxxxxxxxxxxxxx] On Behalf Of
Lynch, Brian
Sent: 12 June 2001 14:01
To: 'stds-802-3-pwrviamdi-detection@xxxxxxxxxxxxxxxxxx'
Cc: 'stds-802-3-pwrviamdi@xxxxxxxx'
Subject: [802.3af] RE: Single port insertion time issue.


I agree with your conclusion. Definition A - The time to 
see 44-57 volts on the output of the PSE is the right time to measure.
You could also say 33-57 volts at the PD input port but I think
specifying at the PSE will be easier to test. By specifying any other
time we are getting too far into the PD and its operation, which I think
we need not do. The 
time "from PSE voltage at the port to Data being sent" is best 
left to implementation.


>-----Original Message-----
>From: Yair Darshan [mailto:YairD@xxxxxxxxxxxxxx]
>Sent: Tuesday, June 12, 2001 2:21 AM
>To: 'stds-802-3-pwrviamdi-detection@xxxxxxxxxxxxxxxxxx'
>Cc: 'stds-802-3-pwrviamdi@xxxxxxxx'
>Subject: Single port insertion time issue.
>Attached short summary of the issue with the data that we have so far. 
>Please review it in order to close this issue.
> <<Single Port Insertion Time -Considering System Aspects.pdf>>
>Darshan Yair
>Chief   Engineer 
>> PowerDsine Ltd.  -  Powering Converged Networks
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