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R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l

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 refinement of the technologies required to

fulfill 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 fulfilling 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

Содержание RTM3204

Страница 1: ...Smarter Timing Solutions RTM3204 GPS Timing Module User Manual...

Страница 2: ......

Страница 3: ...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...

Страница 4: ...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...

Страница 5: ...xpiration 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 first as many...

Страница 6: ...R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l...

Страница 7: ...ew 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...

Страница 8: ...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 gpsversi...

Страница 9: ...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...

Страница 10: ...R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l Appendix F Specifications 49 Special Modifications Changes for Customer Requirements 53...

Страница 11: ...fanless convection cooled 133 MHz CPU with integral ethernet interface an RS 232 serial port a High Performance Rubidium Rb oscillator and a power supply Non volatile storage of the embedded Linux op...

Страница 12: ...would unnecessarily complicate the system s navigation mission Contained in the data transmitted from each satellite is the current offset between GPS time and UTC USNO This offset is composed of the...

Страница 13: ...basic familiarity with TCP IP networking protocols like ping telnet and ftp is required Checking and Identifying the Hardware Unpack and check all the items using the shipment packing list Contact the...

Страница 14: ...RS 232 Serial I O Port Signal Definitions for detailed information 1PPS Jack This SMB connector provides the 1PPS TTL output The pulse width is normally 1 millisecond wide when shipped from the factor...

Страница 15: ...to the antenna input jack on the RTM3204 GPS Timing Module 3 Connect the 24VDC terminal to the positive output of the DC power source Connect the GND terminal to the negative output of the DC power s...

Страница 16: ...re the ethernet interface automatically via the Dynamic Host Configuration Protocol DHCP The RTM3204 will attempt to set the netmask its IP address the IP address of the default gateway the domain nam...

Страница 17: ...r certain conditions you may also need to use the RS 232 serial I O port if you encounter a problem while upgrading the firmware in your RTM3204 GPS Timing Module To test serial communications with th...

Страница 18: ...load_ramdisk 1 rw Initializing CPU 0 Calibrating delay loop 66 96 BogoMIPS Memory 30784k 32768k available 812k kernel code 1596k reserved 162k data 68k init 0k highmem Checking if this processor honou...

Страница 19: ...pus UPGRADE rootfs 0x00fe0000 0x01000000 Tempus Hi BootLdr mtd Giving out device 6 to Tempus Hi BootLdr NET4 Linux TCP IP 1 0 for NET4 0 IP Protocols ICMP UDP TCP IGMP IP routing cache hash table of 5...

Страница 20: ...er version and build date Tycho GPS 6010 0042 000 v 1 00 Wed May 9 14 17 44 UTC 2002 Tycho GPS root gsys This last line is the standard RTM3204 Tycho shell prompt The RTM3204 Tycho uses the bash shell...

Страница 21: ...ow DHCP Settings Use a DHCP server to configure the ethernet interface y es n o n HOST name setting Set the hostname of your Tycho GPS Only the base hostname is needed not the domain Enter hostname gs...

Страница 22: ...shutdown with re boot command at the shell prompt Tycho GPS root gsys shutdown r now If you are using the RS 232 serial I O port to communicate with the RTM3204 you will be able to see the kernel gene...

Страница 23: ...ck 255 0 0 0 U 0 0 0 lo default 192 168 1 241 0 0 0 0 UG 1 0 0 eth0 Here you are interested in the default gateway address It should match the appropriate one for your network If so then the ethernet...

Страница 24: ...as gsysuser with password Praecis When logged in as gsysuser you may check status information and view log files but you will not be able to modify any system settings or view secure files After corre...

Страница 25: ...guring the unit you should change the passwords using the gsyspasswd command issued from the shell prompt Issuing exit will close the ssh session Connecting Instruments to the RTM3204 Front panel moun...

Страница 26: ...R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l 16 C H A P T E R T W O...

Страница 27: ...The serial I O port physical and electrical characteristics are defined as well General Linux Shell Operation The RTM3204 is a derivative of our Tycho GPS Frequency Reference As such the user inteface...

Страница 28: ...tracking status to the console gpsversion Prints the GPS firmware and FPGA version information to the console gsyshwaddr Prints the ethernet hardware address if the ethernet has been configured gsysos...

Страница 29: ...ll script that facilitates the GPS subsystem firmware up grade process Detailed Command Descriptions accessconfig This command starts an interactive shell script that will allow the root user to confi...

Страница 30: ...iver Autonomous Integrity Monitoring TRAIM for the utmost in reliability during any GPS system faults In addition single satellite operation is possible once an initial accurate position has been dete...

Страница 31: ...MM SS sssssssss is the hour minute second subsecond UTC timestamp of the most recent information received from the GPS subsystem LS is the current number of leap seconds difference between the UTC an...

Страница 32: ...ident the unit may need to be returned to the factory for repair FPGA Config Fault This bit indicates that the microprocessor was unable to configure the FPGA This would be a fatal fault and the unit...

Страница 33: ...3204 Tycho response F W 1 00 FPGA 0202 gsyshwaddr This command displays the ethernet hardware address if the IP network is properly configured Oth erwise it returns nothing Query gsyshwaddr RTM3204 Ty...

Страница 34: ...h Daylight Savings Time disabled If you need to modify this operation you must run this script as root Settings made using this command are non volatile Set gsystimemodeconfig RTM3204 Tycho response I...

Страница 35: ...d in the FLASH disk boot etc directory You must re boot the RTM3204 after running this script for the changes to take effect Set netconfig RTM3204 Tycho response Interactive shell script is started os...

Страница 36: ...w the user to set the dynamic mode of operation of the GPS subsystem By default the unit is configured for static operation so this setting is OFF If the RTM3204 will be mounted on a moving platform l...

Страница 37: ...er appears indicating that the GPS subsystem is ready to receive the file you must hit the ENTER key and the transfer will begin After about one minute it should complete at which point you should see...

Страница 38: ...In order to connect the RTM3204 to another computer a null modem adapter must be used The serial cable provided with the shipment is wired as a null modem adapter and can be used to connect the RTM32...

Страница 39: ...e the RTM3204 extrapolates the expected drift of the RTM3204 timing signals based on its knowledge of the characteristics of the internal Rubidium oscillator The extrapolated TFOM is based on a conser...

Страница 40: ...R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l 30 A P P E N D I X A...

Страница 41: ...d together What You Need To Perform the Upgrade You will need to use ftp or scp to transfer the binary image file s to the RTM3204 This means that you must place the previously downloaded file s in a...

Страница 42: ...his command on your RTM3204 updaterootflag 1 You should see this line displayed UPGRADE is the default root file system Now reboot the system by issuing this command at the shell prompt shutdown r now...

Страница 43: ...tloader will boot the factory root file system Watch the rest of the boot process to make sure that you have successfully recovered If the system boots normally then you should resolve the problems wi...

Страница 44: ...that one of the intermediate processes of the script execution has been terminated The next message informs you that the GPS engine file transfer has completed and that its start up messages should ap...

Страница 45: ...character that the GPS engine bootloader sends to indicate to the XMODEM utility that it is wating for a download You may now re try the upload procedure assuming that you have corrected any original...

Страница 46: ...R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l 36 A P P E N D I X B...

Страница 47: ...familiarize yourself with the agent configuration concepts SNMPv3 Security Prior to SNMPv3 SNMP had definite security inadequacies due to using two community names in a manner analogous to passwords...

Страница 48: ...t be executed A very compact editor with WordStar command keystrokes is available on the system for this purpose edit If you start edit without giving it a file name to open it will display its help s...

Страница 49: ...ommunity trap2port informsink xxx xxx xxx xxx informcommunity informport where trap2community and informcommunity should be replaced by your communities and xxx xxx xxx xxx is the IP address or hostna...

Страница 50: ...SMI object tree After adding the user lines to etc snmpd conf copy it to the boot etc directory using cp p The second file is located on the non volatile FLASH disk and is used by the SNMP agent to s...

Страница 51: ...04 s IP address is changed It also means that you cannot use the same boot ucd snmp snmpd conf file with multiple RTM3204 units To generate new keys stop the snmpd process delete the existing usmUser...

Страница 52: ...R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l 42 A P P E N D I X C...

Страница 53: ...of our standard product the Tycho GPS Frequency Reference As such the operating system software will refer to the Tycho The embedded Linux operating system running in the RTM3204 is based on kernel v...

Страница 54: ...ndles the needs of most users however the syntax of these two files sup ports elaborate configuration possibilities which are beyond the capabilites of this simple shell script Advanced users who need...

Страница 55: ...ded in the boot root directory of the RTM3204 Tycho Three files contain these keys identity SSH1 id_rsa SSH2 and id_dsa SSH2 These must be copied to the user s ssh directory on their remote computer B...

Страница 56: ...R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l 46 A P P E N D I X D...

Страница 57: ...l BCD Reference IRIG Document 104 60 IRIG B123 In addition to the time information identified in B122 above this format also contains Straight Binary Seconds SBS of day SBS is provided at the end of t...

Страница 58: ...T active P64 Local offset sign 0 1 P65 Local offset binary 1 Local offset from UTC time P66 Local offset binary 2 P67 Local offset binary 4 P68 Local offset binary 8 P69 P7 Position identifier P70 Loc...

Страница 59: ...III 10 100Base T ethernet System Status Indicator Sync LED Green indicator that pulses to indicate the current GPS acquisition and lock status Network LED Amber indicator that illuminates when the eth...

Страница 60: ...nterprise MIB TIME and DAYTIME server TELNET client server FTP client DHCP client SYSLOG DC Power 25W maximum 12W typical 23 C 24 VDC 20 1 75A maximum Connector Molex Micro Fit 3 0 2 pin jack Mating C...

Страница 61: ...51 R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l S P E C I F I C AT I O N S Mounting Dimensions...

Страница 62: ...R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l 52 A P P E N D I X F...

Страница 63: ...Special Modifications Changes for Customer Requirements From time to time EndRun Technologies will customize the standard RTM3204 GPS Timing Module for special customer requirements If your unit has...

Страница 64: ...R T M 3 2 0 4 G P S T i m i n g M o d u l e U s e r M a n u a l 54 S P E C I A L M O D I F I C AT I O N S...

Страница 65: ......

Страница 66: ...Santa Rosa CA USA TEL 1 877 749 3878 FAX 707 573 8619 www endruntechnologies com Santa Rosa CA TEL 1 877 749 3878 FAX 707 573 8619 www endruntechnologies com Smarter Timing Solutions...

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