Subject: Re: supported GPS time receivers for NTP service?
To: Alicia da Conceicao <email@example.com>
From: Thor Lancelot Simon <firstname.lastname@example.org>
Date: 12/20/2004 08:24:56
On Mon, Dec 20, 2004 at 04:41:58AM -0500, Alicia da Conceicao wrote:
> Note that those consumer GPS receivers (serial/USB/CompactFlash) that
> are commonly available ***DO NOT HAVE A PPS FEED***, and hense cannot
> provide precise (>= 1 usec) timing.
That's not entirely true. At least some of the common chipsets used
in the consumer devices (e.g. the Rockwell chipset) *do* supply a PPS
signal; it may or may not be wired up to the serial port in a given
implementation, and even if it is wired up it may not be _documented_
as being wired up.