EndRun RTM3204 User manual

"Smarter Timing Solutions"
RTM3204
GPS Timing Module
User Manual

RTM3204 GPS Timing Module User Manual
RTM3204 GPS Timing Module
User Manual
Preface
Thank you for purchasing the RTM3204 GPS Timing Module. Our goal in developing this product is
to bring you a precise time and frequency reference that will quickly, easily and reliably meet or ex-
ceed your system requirements. Your new RTM3204 is fabricated using the highest quality materials
and manufacturing processes available today, and will give you years of troublefree service.
About EndRun Technologies
EndRun Technologies is dedicated to the development and renement of the technologies required to
fulll the demanding needs of the time and frequency community.
Our innovative engineering staff, with decades of experience in the research and development of
receiver technology for the Global Positioning System (GPS), has created our window-mount GPS
antenna and extended hold-over oscillator-control algorithms.
The instruments produced by EndRun Technologies have been selected as the timing reference for
such rigorous applications as computer synchronization, research institutions, aerospace, network
quality of service monitoring, satellite base stations, and calibration laboratories.
EndRun Technologies is committed to fullling your precision timing needs by providing the most
advanced, reliable and cost-effective time and frequency equipment available in the market today.
Trademark Acknowledgements
IBM-PC, Linux, NotePad, Timeserv, UNIX, Windows NT, WordStar are registered trademarks of the
respective holders.
Part No. USM3204-0100-000 Revision 1
January 2008
Copyright © EndRun Technologies 2005-2008

RTM3204 GPS Timing Module User Manual
RTM3204 GPS Timing Module User Manual
About This Manual
This manual will guide you through simple installation and set up procedures.
Introduction – The RTM3204 GPS Timing Module, how it works, where to use it, its main features.
Basic Installation – How to connect, congure and test your RTM3204 GPS Timing Module.
Console Port – Description of the Linux console commands for use over the network and serial ports.
If you detect any inaccuracies or omissions, please inform us. EndRun Technologies cannot be held
responsible for any technical or typographical errors and reserves the right to make changes to the
product and manuals without prior notice.
Warranty
This product, manufactured by EndRun Technologies, is warranted against defects in material and
workmanship for a period of one year from date of shipment, under normal use and service. During
the warranty period, EndRun Technologies will repair or replace products which prove to be defec-
tive.
For warranty service or repair, this product must be returned to EndRun Technologies. Buyer shall
prepay shipping charges to EndRun Technologies and EndRun Technologies shall pay shipping
charges to return the product to Buyer. However, Buyer shall pay all shipping charges, duties, and
taxes for products returned to EndRun Technologies from another country.
Products not manufactured by EndRun Technologies but included as an integral part of a system (e.g.
peripherals, options) are warranted for ninety days, or longer as provided by the original equipment
manufacturer, from date of shipment.
Limitation of Warranty
The foregoing express warranty shall not apply to defects resulting from improper or inadequate
maintenance by Buyer or User, Buyer-supplied software or interfacing, unauthorized modication or
misuse, operation outside of the environmental specications for the product, or improper site prepa-
ration or maintenance.
TO THE EXTENT PERMITTED BY LAW, THIS WARRANTY AND REMEMDIES SET FORTH
ABOVE ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, REMEDIES AND
CONDITIONS WHETHER ORAL OR WRITTEN, STATUTORY, EXPRESS, OR IMPLIED. AS
PERMITTED BY APPLICABLE LAW, ENDRUN SPECIFICALLY DISCLAIMS THE IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

RTM3204 GPS Timing Module User Manual
RTM3204 GPS Timing Module User Manual
Warranty Repair
If you believe your equipment is in need of repair, call EndRun Technologies and ask for a customer
service agent. It is important to contact us rst as many problems may be resolved with a phone call.
Please have the serial number of the unit and the nature of the problem available before you call. If
it is determined that your equipment will require service, we will issue an RMA number. You will be
asked for contact information, including your name, address, phone number and e-mail address.
Ship the unit prepaid in the original container or a container of sufcient strength and protection to
EndRun Technologies. EndRun will not be responsible for damage incurred during shipping to us.
Be sure the RMA number is clearly identied on the shipping container. Our policy is to x or repair
the unit within 5 business days. If it is necessary to order parts or if other circumstances arise that
require more than 5 days, an EndRun service technician will contact you.
Repair After Warranty Expiration
If the warranty period has expired, we offer repair services for equipment you have purchased from
EndRun. Call and ask for a customer service agent. It is important to contact us rst as many prob-
lems may be resolved with a phone call. Please have the serial number of the unit and the nature
of the problem available before you call. If it is determined that the equipment has failed and you
want EndRun to perform the repairs, we will issue you an RMA number. Ship the unit prepaid in
the original container or a container of sufcient strength and protection to EndRun Technologies.
EndRun will not be responsible for damage incurred during shipping to us. Customer is responsible
for shipping costs to and from EndRun Technologies. Be sure the RMA number is clearly identied
on the shipping container. After the equipment has been received we will evaluate the nature of the
problem and contact you with the cost to repair (parts and labor) and an estimate of the time neces-
sary to complete the work.
Limitation of Liability
The remedies provided herein are Buyer’s sole and exclusive remedies. EndRun Technologies shall
not be liable for any direct, indirect, special, incidental or consequential damages, whether based on
contract, tort or any other legal theory.

RTM3204 GPS Timing Module User Manual
RTM3204 GPS Timing Module User Manual

RTM3204 GPS Timing Module User Manual
RTM3204 GPS Timing Module User Manual
Table of Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .i
About EndRun Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Trademark Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Limitation of Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Warranty Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
Repair After Warranty Expiration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
Limitation of Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
Chapter One - Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Main Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Secure Network Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Free FLASH Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
GPS Timing-How It Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Where to Use It . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chapter Two - Basic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Checking and Identifying the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Performing an Initial Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installing the RTM3204 GPS Timing Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mount the RTM3204 GPS Timing Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connecting and Configuring Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Configuring Ethernet with the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connect the RS-232 Serial I/O Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Test the Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Using netconfig to Set Up Your IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Verify Network Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

RTM3204 GPS Timing Module User Manual
RTM3204 GPS Timing Module User Manual
Check Network Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Using Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Using SSH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Connecting Instruments to the RTM3204 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Chapter Three - Control and Status Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
General Linux Shell Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Available User Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Detailed Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
accessconfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
cpuopts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
cpuoptsconfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
eraserootfs_1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
gpscaldelay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
gpsdynmode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
gpsrefpos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
gpsstat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
gpstrkstat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
gpsversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
gsyshwaddr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
gsysosctype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
gsyspasswd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
gsysrootfs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
gsystimemode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
gsystimemodeconfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
gsysversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
inetdconfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
netconfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
oscctrlstat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
pluginopts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
pluginoptsconfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
setgpscaldelay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
setgpsdynmode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

RTM3204 GPS Timing Module User Manual
RTM3204 GPS Timing Module User Manual
setgpsrefpos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
updaterootflag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
upgradegps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
RS-232 Serial I/O Port Signal Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Appendix A - Time Figure-of-Merit (TFOM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Appendix B - Upgrading the Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
What You Need To Perform the Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Performing the Linux Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Recovering from a Failed Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Performing the GPS Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Problems with the GPS Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Appendix C - Simple Network Management Protocol (SNMP) . . . . . . . . . . . . . . . 37
SNMPv3 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Enterprise Management Information Base (MIB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Invocation of the SNMP daemon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Quick Start Configuration -- SNMPv1/v2c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Configuring SNMPv1 Trap Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Configuring SNMPv2c Notifications and Informs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Configuration of SNMPv3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Appendix D - Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Linux Operating System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
OpenSSH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Appendix E - Timecode Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
IRIG-B122 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
IRIG-B123 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
IEEE-Standard 1344-1995 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
NASA-36 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
2137 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
IEEE-1344 Bit Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

RTM3204 GPS Timing Module User Manual
Appendix F - Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Special Modifications - Changes for Customer Requirements . . . . . . . . . . . . . . . . 53