Paul Kennedy wrote:Hi,
my apologies. I am using the GPS from SureElectronics.
It is pretty easy to get up and running, but I am starting to find some limitations, specifically with the control of NMEA sentences. It looks like I cannot configure the sentences. All I need is ZDA, but I presently receive everything but ZDA.
support for nanosecond accurate clock signal output level, need to let the the pps signal instead of linux kernel PLL RTC signal, so that when the lost satellite signal, but also keep the time accurate.
This is HARDPPS Modehttp://www.ntp.org/ntpfaq/NTP-s-algo-kernel.htm.
my ntp web page: http://www.openxid.com/posts/timing-services