M e r i d i a n I I U s e r M a n u a l
4
C H A P T E R O N E
All of this means that during normal operation, the source of the timing information being transmitted
from each of the satellites is directly traceable to UTC(USNO). Due to the nature of the GPS spread
spectrum Code Division Multiple Access (CDMA) modulation scheme, this timing information may
be extracted by a well-designed receiver with a precision of a few nanoseconds. The GPS time and
frequency engine in the Meridian II does just that.
Where to Use It
Since signals from the GPS satellites are available at all locations on the globe, you may deploy the
Meridian II virtually anywhere. However, you must be able to install an antenna with good sky vis-
ibility, preferably on the rooftop.
Client/Slave Software
Meridian II has been designed to operate in conjunction with existing public domain NTP/SNTP cli-
ent software and may be used in any network environment that is using TCP/IP protocols. Although
client software is available for all platforms, for the most precise applications, the Unix-like operating
systems are best supported. For more information see
Chapter 7 - NTP, Setting Up NTP Clients on
Unix-like Platforms
and
Setting Up NTP Clients on Windows
. There is additional information about
NTP Client software at this link:
http://www.endruntechnologies.com/ntp-client.htm
For PTP/IEEE-1588 applications, the Meridian II can interoperate with a variety of Slave software
and hardware. For more information on PTP Slave Software go to this link:
Summary of Contents for Meridian II
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