15GPS Signal Strength | Symmetricom S100 instruction

SyncServer S100

6(Unused)

7(MSB) (Unused)

Notes:

(1) After this error is detected, its bit remains set until the GPS receiver is reset.

(2)This bit follows the current status of the antenna feed line fault-detection circuitry. Since GPS receiver has an integral antenna assembly, this information of little import; it is only shown for the sake of completeness, being important for sensors with separate antennas.

(3)This bit is ‘1’ if the last computed reference frequency error indicated that the reference oscillator is out of tolerance. (Packet 2D requests the oscillator offset and packet 4D returns the oscillator offset to the user.)

(4)this bit is always set as the GPS receiver battery backup is not installed.

GPS Signal Strength

Here, the signal strength are displayed.

Figure 4-15:GPS Signal Strength

The data is for the satellites that are currently being tracked:

•The satellite number

•The signal level for each satellite

68	S100 User Guide – Rev. D – June 2005

Image 76

Symmetricom S100 manual 15GPS Signal Strength

Contents

S100 User Guide S100 User Guide Rev. D June Table of Contents Chapter Web-Based Interface TCP/IP Chapter Operations & Time-Protocols Appendix a S100 Specifications 119 Appendix C Appendix E Antenna Replacement 141 Index 143 Introduction and Overview How to Go here for the answerChapter Conventions Used Term Definition Time Standards Product DetailsGlobal Positioning System GPS Time Synchronization and Business Stratum LevelsStratum Level Significance National Measurement Institutes How the S100 Solves the ProblemCountry Name of NMI Abbreviation Special Safety Instructions S100 Technology OverviewS100 Product Overview Sources of Time Web-based Access Time Distribution Model How the S100 Works S100 and Time Distribution S100 and NTP v4’s Security FeaturesS100 and Client Software S100 and the Global Positioning System SyncServer S100 Installation and Configuration Getting Up and RunningUnpacking Your S100 For the S100-Dial-up/ACTS For the S100-GPS For the S100-Dial-up/ACTS For the S100-GPS Your CD-ROM N c S e rv e r Using the Software PuTTY Folder Details PSFTP.EXE PUTTYGEN.EXE Installing Your S100 Primary Power ConnectionImportant Safety Instructions Rack Mounting Making All Connections An Overview Setting Up the Hardware On the S100 Front Panel On the S100 Rear Panel Appendix E on Choosing an Antenna Location Installing the GPS AntennaOutdoors Connecting the Rubidium Option Installing the GPS antennaEstablishing a Serial Connection 4Connecting the S100 Setting Up the IP Address 5COM Port Properties 6Login and Command Line Testing Network Functionality 9IPCONFIG and Ping Screen Turning Off Your S100 Normal How to Acquire Time Logging On Administrator Log-In System Status Logged Configuration Wizard Next Step Dial-up to NISTs Automated Computer Time Service Acts Choose Your Time Source 17Configuring the S100 Time Source GPS Then click Next for the System Information dialog System Tests Dialog Test Results dialog Setup Complete dialog Dialup Settings dialog System Information dialog System Tests dialog Test Results dialog NTP 30System Information fields Click Test Now Configuring NTP IRIG-B v.120,122,123 Dialup Backup dialog 36System Testing options 37Test Results shown Using SymmTime Installing SymmTime SyncServer S100 Next Use the Web-Based Interface To Synchronize SymmTime SyncServer S100 Web-Based Interface Interface Screen Reference Administrative Interface Logging Admin Interface Base Menu 2Administrative Interface Base Menu Administrative Menu Expanded 3Interface Admin Menu, expanded Timing Configuration System Status 5Configuring New Clients and Servers NTP Relationships S100 User Guide Rev. D June NTP Time Source Test NTP Dialup NTP Restart NTP Status SyncServer S100 10Viewing the NTP Configuration File Advanced ntp.conf Advanced Keys/Certificates 11Obtaining and Generating Keys Certificates Main Settings Timing Engine Timecode Settings IRIG-A IRIG-B GPS Health GPS InformationBit Position Meaning if bit value = GPS Signal Strength 15GPS Signal Strength GPS Time GPS Position Other Information Clock SettingsEngine Time Control Settings 20Control Settings Networking Model Information S100 User Guide Rev. D June Ifconfig Output Ping Traceroute Options Administration Shutdown/Reboot Admin Users Restart Web Interface System Log Configuration Time Zone Snmp Configuration Snmp Edit Alarms 33Setting Alarm Parameters Logs NTP Log Boot Log System Log Config Log Http Log Help SyncServer HelpNtpd Help Search Ntpd Manual Logging Off 40Log Off screen SyncServer S100 Sysplex Timer How the S100 Uses the Sysplex TimerOperations & Time-Protocols S100 Operations and Time Protocols 41Time Information String Parameters Time Protocol RFC Daytime Protocol RFC Network Time Protocol RFC Simple Network Time Protocol RFCNTP Data Format Leap Indicator LI ModeStratum Poll Precision Version Number VN Mode StratumPoll Interval Synchronizing Distance Root Distance Version NTP Authentication Authentication NTP Typical NTP Configuration Considerations Authentication NTP v4 AutokeyHow NTP Defines the Authentication Process Public Domain NTP Package Other NTP Considerations Clients Basic NTP Configuration S100 User Guide Rev. D June SyncServer S100 S100 User Guide Rev. D June 43Large Net NTP Configuration 44Large Net NTP Configuration 45Small Net NTP Configuration Peers Acts Interface Dial-upSecurity Snmp Simple Network Management Protocol Acts Operation Version 106 S100 User Guide Rev. D June An authenticated and encrypted request example Parameter Command Line Flag Snmp.conf token 108 S100 User Guide Rev. D June Frequently Asked Questions QuestionsHow can we obtain NTP client software to use with the S100? What are the main differences between Sntp and NTP clients? How does the S100 handle Leap Second? How do I check versions of the software in the S100? How do I know if the satellite signal strength is good? Cable length and Type Antenna Does the S100 support NTP v4? Can the S100 utilize a certificate from an external CA?How is the interface to the S100 secured? What security functions are provided with the S100? How-to’s and Tips How to install NTP v4 on a Unix system How to install your S100How to get time using dial-up How to get time using GPS How to install your GPS antenna How to acquire and install SymmTimeUse the quick How to guide How to change the root password Solutions How to get information about NTPS100 does not respond to ping command S100 does not respond to NTP queries Possible cause of tracking problems How to fix My S100 won’t track satellites 118 S100 User Guide Rev. D June S100 Specifications S100 Data Sheet SpecificationsAppendix a Component Specifics Description Pin Descriptions Time Glossary Appendix B Cdma BCDCdsa Content Filtering Certificate Authority CACertificate Extension Certificate Request DES DclsDhcp DSA SS/NTPDSS DTT GMT GPSHtml Http Irig IKEITU LAN LdapMD5 MIB Nist NOCNtms NTP OSI PCIPkcs PKI SHA-1 RSAMime Snmp SSLSSL-LDAP TCP/IP Tftp TLSTMC TPC TSA TSPTSR UDP/IP UTC VPNW3C WAN 509 v3 Certificate Extension Customer Assistance Appendix DUS Assistance Center Emea Assistance Center Emeasupport@symmetricom.com Declaration of Conformity Appendix CSymmetricom, Inc Westwind Blvd Santa Rosa, Ca USA Conforms to the Following European Union Directives FCC Antenna Replacement Appendix E 142 S100 User Guide Rev. D June Index Numerics 144 S100 User Guide Rev. D June S100 User Guide Rev. D June 145 Denial of Service DES S100 User Guide Rev. D June 147 Https Irig a 150 S100 User Guide Rev. D June S100 User Guide Rev. D June 151 152 S100 User Guide Rev. D June S100 User Guide Rev. D June 153 154 S100 User Guide Rev. D June S100 User Guide Rev. D June 155 Vault Verification Version Virus VPN W3C Wait time WAN 509 v3 Certificate Extension Coordinate Year 158 S100 User Guide Rev. D June