Masterclock GPSPCI Spécifications télécharger pdf (Page 29)

Appendix A

Installation

The installation consists in placing the GPS and clock boards in the computers, connecting

the cables and the GPS antenna and installing the required software.

A.1 Technical requirements

The following hardware resources are use d:

• One GPS card per master computer per site

• GPS Antenna and cable

• Clock card in each computer in the system

• Cables and T connectors to interconnect the clock cards

The following software is needed for the system so perform properly:

• Linux operating system - kernel version 2.4.6 or greater

• Meinberg GPS drivers - MBG Tools for Linux 0.2.3beta

• Clock card kernel module - HSLCLOCK version adapted to work with the GPS

• TCP/IP network connection and xinetd server

A.2 Hardware

The GPS system works only if the antenna is properly mounted - it should be placed in a

location from which as much sky as possible can be seen - preferably on the roof of some

building. Check the output of the m/jointfilesconvert/486857/bgstatus program to see if the antenna is properly

mounted. The GPS should see more than 7 satellites.

For the system to work properly, the switches on the GPS cards should have the following

conﬁguration:

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Masterclock GPSPCI Spécifications Page 29