[time-nuts] Net4501's cheap...

David J Taylor david-taylor at blueyonder.co.uk
Sat May 25 05:17:41 UTC 2013


-----Original Message----- 
From: Paul

Sure.  I think my point is that I've seen this problem on both of my
units when powered by both a 5V2A wall adapter supply and a 5V.8A
supply.  Since the problem has been reported by other people it's
sufficient for me to look to other solutions that don't have this
(admittedly minor) possibly configuration related flaw.  Besides I got
them to run NTP and they're too jittery for my taste.
===========================

Paul,

Just what devices were you hot-plugging to produce this problem?  One with 
an initial current surge outside the USB spec I could understand.

NTP performance on the three Raspberry Pi cards here can be of the same 
order as FreeBSD running on an Intel Atom PC:

  http://www.satsignal.eu/mrtg/performance_ntp.php

The RPi cards are all using very low cost GPS/PPS receivers with no external 
antenna, and the FreeBSD box has an external roof-mounted GPS 18 LVC.

Cheers,
David
-- 
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor at blueyonder.co.uk 




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