Endace EDM05-01, User Manual

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EDM05-01v6 Time Distribution Server User Guide - Installation
©2011 Endace Technology Ltd. Confidential - Version 6 - November 2011
9
Connecting to a Computer
Connecting the TDS2 to a computer allows you to provide a reference clock to the operating system. This allows you
to:
 verify the TDS2 module is receiving valid time packets,
 set the computer and DAG clocks,
 configure the computer as a Stratum 1 NTP server for the network.
Once the TDS2 is connected to the time reference source and is fully functional, you can connect the TDS2 module's
HOST serial port to a serial port on the computer. The computer then receives the PPS signal and data packet from
the TDS2.
If the signal is being generated by a CDMA receiver, you can view the time packet on the computer using a standard
terminal emulator.
The Trimble Acutime Gold outputs binary formatted data in the serial time packet. This cannot be viewed directly
using a terminal emulator. Trimble supplies decoding software that can display the binary data.
Follow the steps below to connect the TDS2 Module to a computer:
1. Using a straight-through DB9M to DB9F serial cable (supplied), connect the TDS2 Module to the first available
serial port on the computer.
2. Ensure the Signal Source switch on the front panel of the TDS2 Module is set to the correct source.
Verifying Time Packets
To verify GPS time packets on a Linux based computer system, run the command:
cat /dev/ttySX
Where
X
is the index number of the serial port. For example, for serial port
com1
the index number will be
0
.