Reference clocks.

[Dan Poirot]

USB 1.1 is good enough! 

You got a jitter or latency problem you can't solve with 12 Mbit/sec,
rock-solid on a point-to-point link?


...just don't put a USB floppy drive on the same bus!  

;-)



-----Original Message-----
From: devel [mailto:devel-bounces at ntpsec.org] On Behalf Of Gary E. Miller
Sent: Tuesday, May 03, 2016 9:34 PM
To: Mark Atwood <fallenpegasus at gmail.com>
Cc: devel at ntpsec.org
Subject: Re: Reference clocks.

Yo Mark!

On Tue, 03 May 2016 21:31:10 +0000
Mark Atwood <fallenpegasus at gmail.com> wrote:

> In a few weeks I will have a crate of the Navisys units.  They do PPS 
> over USB serial.

I'd like one of the GR-701W for testing.

I notice navisys.com now has a GR-801W, with uBlox 8.  72 channels with GPS
& QZSS (L1), GLONASS, BEIDOU, WAAS, EGNOS, and MSAS.

But strangely, not RTCM 3.x support, and still USB 1.1:

http://www.navisys.com.tw/products/gps_gnss_receivers.htm

Unrelated to the NTPsec, but related to gpsd, eventually we'll need to
support some high update rate GPS.  The GR-801 can do 18Hz.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588