From: "Eric S. Raymond" <esr@thyrsus.com>
To: Andrew McGregor <andrewmcgr@gmail.com>
Cc: thumbgps-devel@lists.bufferbloat.net
Subject: Re: [Thumbgps-devel] PPS over USB Serial can work
Date: Sat, 17 Mar 2012 02:45:13 -0400 [thread overview]
Message-ID: <20120317064513.GA3482@thyrsus.com> (raw)
In-Reply-To: <A1F7265A-D9EE-4716-BE3B-50225CCA60BE@gmail.com>
Andrew McGregor <andrewmcgr@gmail.com>:
> I decided to try a practical experiment, to prove one way or another if USB
> serial PPS on a consumer router can work, and how well.
>
> Short summary: it works, jitter is at the 300 µs level.
Excellent!
Any chance you can run a similar test with a PL2303? The FTDI SIO is only
the second-most-likely converter to wind up in our device. I see PL2303
breakout boards are available for < $10 on eBay, though you might have to work
a bit to find one that has pins for the handshake lines on the input side.
--
<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>
next prev parent reply other threads:[~2012-03-17 6:45 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-17 3:17 Andrew McGregor
2012-03-17 6:45 ` Eric S. Raymond [this message]
2012-03-17 9:53 ` Andrew McGregor
2012-03-17 10:11 ` Eric S. Raymond
2012-03-17 11:38 ` Andrew McGregor
2012-03-17 17:42 ` Dave Taht
2012-03-17 18:04 ` Eric S. Raymond
2012-03-17 21:49 ` tz
2012-03-18 1:34 ` Eric S. Raymond
2012-03-20 11:35 ` Andrew McGregor
2012-03-20 12:06 ` Eric S. Raymond
2012-03-20 14:41 ` tz
2012-03-20 21:31 ` Eric S. Raymond
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