[ntp:questions] Re: Using NTP with Trimble Acutime Synchronization Kit

Danny Mayer questions at lists.ntp.isc.org
Tue Dec 6 05:19:47 UTC 2005


John Kennedy wrote:
> After speaking with a Trimble Rep for quite some time, he assured me
> that using the Trimble conversion box (has 2 outputs port A = Passive,
> port B active) using Port A, we could essentially connect 3 PC's to it
> using a special cable that is basically a Y-cable. The rep said that
> Port A only sends a High/Low message out to the GPS antenna in order to
> stimulate the antenna to send back an NTP type message. The port B of
> the device is used for configuration and is meant to be truly
> bi-directional in nature. With respect to the driver for NTP, according
> to information on the NTP4.x for windows NT documentation from
> www.eecis.udeledu/~mills/ntp/html/build/hints/winnt.html website, the
> palisade gps driver is already built into the code. I have opened the
> code and can see the files for this driver in it, but I cannot get it
> to compile correctly. I am looking to some of the software engineers
> here for some help on this, but it doesn't look like its coming any
> time soon. Unfortunately the PC's are not connected to an Ethernet
> network in a way that we can send data. They are connected to the
> network, but do so over Vampire Ethernet Taps, which allow them to only
> see the data on the wire, and not to transmit. 
> 

As said in my previous message, the Palisade is already compiled on
windows should you don't need to do anything.

If the PC's are not able to query the server, set up the XP box to be a
broadcast server and have the clients disable authentication and act as
broadcast clients.

Danny



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