Page 1 PRISMA VelaSync® High-Speed Enterprise Time Server User's Manual Spectracom Part No.: 1232-5000-0050 Revision: 1 Date: 11-May-2018 spectracom.com...
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Page 3 Spectracom reserves the right to make changes to the product described in this document at any time and without notice. Any software that may be provided with the product described in this document is furnished under a license agreement or nondisclosure agreement.
Page 4 Blank page. VelaSync User's Manual...
Page 5: Table Of Contents
CHAPTER 1 Introduction & Overview 1.1 Product Overview 1.2 About this Manual 1.3 Designated Use of this Product 1.4 Technical Specifications 1.4.1 Hardware 1.4.1.1 Server 1.4.1.2 GPS/GNSS Receiver 1.4.1.3 Oscillator 1.4.2 I/O Connectors 1.4.2.1 Timing Connector 1.4.2.2 Communication Ports 1.4.3 Environmental Specifications 1.4.4 Size, Weight &...
Page 6 CHAPTER 2 Installation & Setup 2.1 Unpacking and Inventory 2.2 Selecting the Right Installation Location 2.3 Rack Mounting: SAFETY 2.4 Rack Installation 2.4.1 TELCO Rack Installation 2.5 Basic Connections Setup 2.5.1 Connecting the GPS Antenna 2.5.2 Connecting Power 2.5.3 Establishing a Network Connection 2.6 Accessing the Web UI 2.7 Configuring IP Address(es) 2.7.1 Changing the IP address using an Ethernet connection...
Page 7 2.10.8.3 NTP Peers: Adding, Configuring, Removing 2.10.9 NTP Authentication 2.10.9.1 NTP: Symmetric Keys (MD5) 2.10.10 NTP Access Restrictions 2.10.11 Spectracom Technical Support for NTP 2.11 Configuring PTP 2.11.1 The PTP Screen 2.11.1.1 The PTP Settings Panel 2.11.1.2 The PTP Statistics Panel 2.11.2 Enabling/Disabling PTP...
Page 8 3.2.3.4 Configuring a Leap Second 3.2.4 Local Clock(s), DST 3.2.4.1 Adding a Local Clock 3.2.4.2 DST Examples 3.2.4.3 DST and UTC, GMT 3.3 Managing References 3.3.1 Input Reference Priorities 3.3.1.1 Configuring Input Reference Priorities 3.3.1.2 The "Local System" Reference 3.3.1.3 The "User/User" Reference 3.3.1.4 Reference Priorities: EXAMPLES 3.3.2 The GNSS Reference 3.3.2.1 Reviewing the GNSS Reference Status...
Page 9 4.4 Notifications 4.4.1 Configuring Notifications 4.4.2 Notification Event Types 4.4.2.1 Timing Tab: Events 4.4.2.2 GPS Tab: Events 4.4.2.3 System Tab: Events 4.4.3 Configuring GPS Notification Alarm Thresholds 4.4.4 Setting Up SNMP Notifications 4.4.5 Setting Up Email Notifications 4.5 Managing Users and Security 4.5.1 Managing User Accounts 4.5.1.1 Types of Accounts 4.5.1.2 About "user"...
Page 10 4.8 Updates and Licenses 4.8.1 Software Updates APPENDIX Appendix 5.1 Troubleshooting 5.1.1 Minor and Major Alarms 5.1.2 Troubleshooting: System Configuration 5.1.2.1 System Troubleshooting: Browser Support 5.1.3 Troubleshooting – Unable to Open Web UI 5.1.4 Troubleshooting via Web UI Status Page 5.1.5 Troubleshooting GNSS Reception 5.1.6 Troubleshooting Hardware Issues 5.1.6.1 Power Supply Failure...
Page 11 5.10.2 OpenSSH 5.10.3 OpenSSL 5.11 List of Tables 5.12 List of Images 5.13 Document Revision History INDEX • TABLE OF CONTENTS VelaSync User's Manual...
Page 12 BLANK PAGE. • TABLE OF CONTENTS VelaSync User's Manual...
Page 13: Introduction & Overview
Introduction & Overview The following topics are included in this Chapter: 1.1 Product Overview 1.2 About this Manual 1.3 Designated Use of this Product 1.4 Technical Specifications 1.5 Front Panel Overview 1.6 Rear Panel Overview 1.7 The VelaSync Web UI 1.8 YOUR SAFETY 1.9 Regulatory Compliance CHAPTER...
Page 14: Product Overview
GNSS (GPS) timing technology, and reliable server hardware allows it to provide high-performance time management over multiple network interfaces. PRISMA VelaSync is the latest version of this unit. For the user manual for an original VelaSync (part number 1225-xxxx-xxxx, purchased before 2018) see the VelaSync User's Manual archived on the Spectacom website.
Page 15 This User Manual is written for a professional audience, targeting experienced system integ- rators and PC technicians. Other relevant documentation Note: PRISMA VelaSync is the latest version of this unit. For the user manual for an original VelaSync, see the VelaSync User's Manual , part number...
Page 16: Designated Use Of This Product
The PRISMA VelaSync High- Speed Enterprise Time Server is intended for use in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security.
Page 17: Technical Specifications
1.4 Technical Specifications 1.4 Technical Specifications 1.4.1 Hardware 1.4.1.1 Server Supermicro SuperServer 5018R-WR rackmount server with 1U chassis and X10SRW-F motherboard: Four 8cm counter-rotating PWM fans One passive CPU heatsink Two riser cards Four hot-swap 3.5" drive bays (SATA) Intel 1.8 ...
Page 18: Oscillator
1.4 Technical Specifications 1.4.1.3 Oscillator Table 1-1: Oscillator accuracies OCXO Accuracy to UTC (1 sigma locked to GPS) 50 ns 25 ns Holdover Accuracy (loss of GPS signal after 2 weeks locked, constant temperature) After 4 hours 1μs 0.2 μs After 24 hours...
Page 19 1.4 Technical Specifications IRIG DCLS Input Accepts IRIG formats A, B, G; NASA36; IEEE 1344 pulse width codes (does not accept Manchester modulated codes) RS-485 differential input: –7V to +12 V common mode voltage input range, 200 mV differential voltage threshold Single-ended input: +1.3 V , +2 V VIL min...
Page 20 1.4 Technical Specifications 10 MHz sine wave output from oscillator Output impedance: 50 Ω nominal Output load: 50 Ω minimum Output harmonics: < -40 dBc Output spurious: < -70 dBc IRIG AM Output Output formats A, B, E (100 Hz, 1 kHz), G; NASA36; IEEE 1344 Amplitude: 0.5 V to 6 V...
Page 21: Communication Ports
1.4 Technical Specifications 1.4.2.2 Communication Ports 2x 10 GbE SFP+ (optionally 4x, or 2x 10 Gb plus 2x 40 Gb 1 ) 2x 1GbE RJ-45 with hardware time stamping 1x IPMI (V.2.0) 1x RS-232 (Fast UART) 4x USB 2.0 1x VGA 1.4.3 ...
Page 22: Front Panel Overview
1.5 Front Panel Overview 1.5 Front Panel Overview Figure 1-2: Front Panel (bezel removed) 1.5.1 Control Buttons UNIT ID ("UID"): Unit identifier button – to identify this unit, press this button (or activate via IPMI) to turn the blue "i" LED in front and back of unit on/off. RESET button : Reboot the system Power button : Apply/remove power from the power supply of the server.
Page 23: Hard Disk Drives
1.5 Front Panel Overview HDD : IDE channel activity when flashing yellow Power : Power is applied to power supplies (bright green) 1.5.3 Hard Disk Drives Each hard disk drive (HDD) carrier has two LEDs: Green LED : Indicates drive activity, when illuminated. Red LED : When blinking...
Page 24: Rear Panel Overview
12. : Serial 13./14. : Power supplies Note: PRISMA VelaSync does not support having multiple network interfaces on the same subnet or multipath routing. Please inquire about availability. - PPS Output is 3.3V and should be terminated to 50 Ohms.
Page 25: The Velasync Web Ui
1.7 The VelaSync Web UI 1.7 The VelaSync Web UI VelaSync has an integrated web user interface (referred to as "Web UI" throughout this doc- umentation) that can be accessed from a network-connected computer, using a standard web browser. The Web UI is used to configure and monitor the unit. Note: An integrated Command-Line Interpreter interface (CLI) allows the use of a subset of commands that are integrated into the Web UI.
Page 26: The Interfaces Menu
TOOLS : Opens a drop-down menu for access to the system maintenance screens and sys- tem logs. HELP : Provides Spectracom Service Contact Information and high-level system con- figurations you may be required to furnish when contacting Spectracom Service. 1.7.2 The INTERFACES Menu The INTERFACES menu on the Main screen provides access to VelaSync's: External REFERENCES e.g., the GNSS reference input...
Page 27: The Configuration Management Menu
1.7 The VelaSync Web UI 1.7.3 The Configuration MANAGEMENT Menu The MANAGEMENT menu on the Web UI's Main screen provides access to VelaSync's con- figuration screens and settings. On the left side, under NETWORK , the following standard setup screens can be found: Network Setup General Setup SSH Setup...
Page 28 1.7 The VelaSync Web UI CHAPTER • VelaSync User's Manual Rev. 1...
Page 29: Your Safety
Additional Safety Notes pertaining to hardware installation can be found under "Rack Mount- ing: SAFETY" on page 25. 1.8.1 SAFETY: Symbols Used Note: The following symbols may be found in Spectracom technical doc- umentation, or on Spectracom products: Table 1-3: Spectracom safety symbols...
Page 30: Safety Advisories
VelaSync™, and do not mix power supplies with different power ratings. NOTE: Replacement power supplies can be purchased directly from Spectracom (Part no. PS09R- 070J- SL01). Please be sure to also consult local and national electrical codes, and the User's Manual of the Original Equipment Manufacturer which can be accessed online under: https://www.supermicro.com/manuals/superserver/1U/MNL-1771.pdf...
Page 31 Clearly mark the equipment to prevent its further operation. ESD: Best Practices This product does not require opening. In the event that an internal component failed (e.g., a fan), contact Spectracom service (see "Technical Support" on page 222). CHAPTER • VelaSync User's Manual Rev. 1...
Page 32: Regulatory Compliance
NOT de-energize the system!) Caution: Electronic equipment is sensitive to Electrostatic Discharge (ESD). Observe all ESD precautions and safeguards when handling Spectracom equip- ment. Use a grounded wrist strap to prevent static discharge. Put components and PCBs back into their antistatic bags, while not in use.
Page 33 1.9 Regulatory Compliance provide reasonable protection against harmful interference when the equipment is oper- ated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the man- ufacturer’s instruction manual, may cause harmful interference with radio com- munications.
Page 34 1.9 Regulatory Compliance BLANK PAGE. CHAPTER • VelaSync User's Manual Rev. 1...
Page 35: Installation & Setup
Installation & Setup The following topics are included in this Chapter: 2.1 Unpacking and Inventory 2.2 Selecting the Right Installation Location 2.3 Rack Mounting: SAFETY 2.4 Rack Installation 2.5 Basic Connections Setup 2.6 Accessing the Web UI 2.7 Configuring IP Address(es) 2.8 Advanced Timing Connections 2.9 Configuring Network Settings 2.10 Configuring NTP...
Page 36: Unpacking And Inventory
Should you experience any problems during installation and configuration of your Spectracom product, please contact your closest Spectracom Customer Service Center (see "Technical Sup- port"...
Page 37: Rack Mounting: Safety
2.3 Rack Mounting: SAFETY A dedicated room with restricted access Electrically grounded and mechanically stable rack , with physical clearance for unres- tricted air flow and servicing: approx. 650 mm [25”] in front of rack, 770 mm [30”] in the back of rack Clean, dust-free , and stable 1 ambient temperature not to exceed 35°C [95°F].
Page 38 2.4 Rack Installation Note: Also consult the installation instructions that came with the rack or cabinet you plan on using. All VelaSync units are shipped with two rack rail assemblies, each of which consists of two sec- tions: the inner rail , which is pre-installed to the server chassis the outer rail assembly , which faces the rack Figure 2-1: ...
Page 39 2.4 Rack Installation Figure 2-2: Optional inner rails Installing the outer rail to the rack: Measure the distance from the front rail to the rear rail of the rack. Attach a short bracket to the front side of each of the outer rails, and a long bracket to the rear side of each outer rail.
Page 40: Telco Rack Installation
2.5 Basic Connections Setup Figure 2-3: Rack installation 2.4.1 TELCO Rack Installation To install the VelaSync unit in a Telco-type rack, use two L-shaped brackets on either side of the VelaSync chassis. Determine how far forward the unit will extend out of the front of the rack. Determine a balanced front-to-back position of the chassis.
Page 41: Connecting The Gps Antenna
Connect the GPS/GNSS antenna to the GNSS RF connector (see illustration above, item number 7), using the supplied Type-N adapter cable, and an LMR-400 equivalent cable with surge suppressor and active GPS L1 antenna, such as Spectracom model 8230. Note the GNSS receiver connection provides 5V power for the antenna.
Page 42: Establishing A Network Connection
2.5 Basic Connections Setup Plug in power to both power supplies (items 13 & 14 "Basic Connections Setup" on page 28).. As soon as at least one of the two power supplies has been connected to the mains voltage, you may hear fan noise from inside the VelaSync housing. However, note that the unit is not running yet (check the front indicator lamps: they will remain dark).
Page 43: Accessing The Web Ui
"Managing Passwords" on page 166. Upon initial login, you will be asked to register your product. Spectracom recommends to register VelaSync, so as to receive software updates and services notices. You can also register your product on the Spectracom website register.spectracom.com...
Page 44: Changing The Ip Address Using An Ethernet Connection
2.7 Configuring IP Address(es) The other Ethernet ports default to DHCP; if connected to a DHCP server via ETH1 through ETH5 , VelaSync will accept a dynamic IP address. Once you are connected to the Web UI, you can manually adjust the IP addresses for each eth- ernet port, and enable or disable DHCP.
Page 45: Setting Up An Ip Address Via The Serial Port
2.7 Configuring IP Address(es) disable DHCP (selecting this function will provide access to the remaining settings) assign a static IP address set netmask values set Gateway, domain, DNS, and MTU values. Note: Wait to click Submit Apply until fully finished assigning val- ues to avoid errors.
Page 46: Subnet Mask Values
2.7 Configuring IP Address(es) VelaSync, and “ ” is the full subnet mask for the network (For a list of y.y.y.y subnet mask values, see "Subnet Mask Values" below.) Configure the gateway by typing <Enter> gw4set 0 z.z.z.z (where indicates which interface routing table to add the default gateway for, and “...
Page 47: Advanced Timing Connections
TSync timing card connections 2.8.1 TSync I/O Signals PRISMA VelaSync holds a factory-installed TSync timing card which contains a GPS/GNSS antenna connection, status LED's, and a 25 pin Micro D-Sub connector. The Micro D- Sub connector can be expanded into different configurations by use of the adapter cable and standard breakout cable.
Page 48: Basic Breakout Cable
2.8 Advanced Timing Connections Table 2-2: Adapter pinout, timing connector END "A" END "B" PIN-1 PIN-1 PIN-2 PIN-2 PIN-3 PIN-3 PIN-4 PIN-4 PIN-5 PIN-5 PIN-6 PIN-6 PIN-7 PIN-7 PIN-8 PIN-8 PIN-9 PIN-9 PIN-10 PIN-10 PIN-11 PIN-11 PIN-12 PIN-12 PIN-13 PIN-13 PIN-14 PIN-14...
Page 49 2.8 Advanced Timing Connections Figure 2-8: Breakout cable, basic version Table 2-3: Pinout, basic breakout cable (unspecified pins in the table are not connected) Signal Signal P1—Timing Connector GPIO Output 0 IRIG AM Input – Ground GPIO Output 1- Reserved GPIO Input 0 Ground...
Page 50: Premium Breakout Cable
2.8 Advanced Timing Connections Signal Signal IRIG DCLS Input – Ground P3—IRIG AM Input (BNC Female) IRIG AM Input + IRIG AM Input – P4—IRIG AM Output (BNC Female) IRIG AM Output Ground P5—1PPS Input (BNC Female) External 1PPS Input Ground P6—1PPS Output (BNC Female) 1PPS Output...
Page 51 2.8 Advanced Timing Connections Figure 2-9: Breakout cable, premium version Table 2-4: Pinout, premium breakout cable (unspecified pins are not connected in the cable) Signal Signal P1—Timing Connector GPIO Output 2- Reserved GPIO Output 3- Reserved Ground Ground GPIO Output 0 GPIO Output 1- Reserved GPIO Input 2- Reserved...
Page 52: Status Leds
GPIO Output 3 Ground Ground 2.8.2 Status LEDs PRISMA PRISMA VelaSync High-Speed Enterprise Time Server includes a TSync Timing card with three LEDs that provide visual status information. See table LED Colors below for these indic- ator codes. The LEDs operate in certain modes by default.
Page 53: Configuring Network Settings
2.9 Configuring Network Settings During the states power-on , self-test , wait-for-host , and download-from-host , modes are directly allocated to the LEDs, as listed below. Table 2-6: LED flash patterns Color/FUNCTION State green yellow /SYNC /HOLDOVER /ALARM Power-On Self-Test Waiting for Host Blink...
Page 54: General Network Settings
2.9 Configuring Network Settings Navigate to MANAGEMENT > Network Setup . The Network Setup screen is divided into three panels panel provides: Actions General Settings : Allows quick access to the primary network settings necessary to connect VelaSync to a network. See "General Network Settings" below. Web Interface Settings : Web interface timeout : Determines how long a user can stay logged on.
Page 55: Network Ports
2.9 Configuring Network Settings Navigate to MANAGEMENT > Network Setup . In the Actions Panel on the left, click Gen- eral Settings . Populate the fields: Hostname : This is the server’s identity on the network or IP address. Default Port : Unless you specify a specific Port to be used as Default Port, the fact- ory default port eth0 will be used as the gateway (default gateway).
Page 56 2.9 Configuring Network Settings Navigate to MANAGEMENT > NETWORK: Network Setup . The Ports panel on the right side of the screen lists the available Ethernet ports, and their connection STATUS: Green: CONNECTED (showing the connection speed) Yellow: CABLE UNPLUGGED (the port is enabled but there is no cable attached) Red: DISABLED .
Page 57: Network Services
2.9 Configuring Network Settings Default "static lease" ETH port IP address ETH1 defaults to DHCP ETH2 defaults to DHCP ETH3 defaults to DHCP The default subnet is: 255.255.0.0 Netmask : This is the network subnet mask assigned by the network administrator. In the form “...
Page 58: Access Rules
2.9 Configuring Network Settings The Network Services panel has ON/OFF toggle switches for the following daemons and fea- tures: SSH : Secure Shell cryptographic network protocol for secure data communication HTTP : Hypertext Transfer Protocol 2.9.4 Access Rules Network access rules restrict access to only those assigned networks or nodes defined. If no access rules are defined, access will be granted to all networks and nodes.
Page 59: Ipmi Configuration
2.9 Configuring Network Settings IP addresses, but instead they must be input as blocks, i.e. you need to add at the address ensure that only that address allowed. Example: will allow only access. 10.2.100.29/32 10.2.100.29 I P a d d r e s s n o m e n c l a t u r e : IPv4—...
Page 60: Ssh
2.9 Configuring Network Settings Note: You will need ADMINISTRATOR access to configure VelaSync IPMI in the Web UI. To configure a static IP address or to view the current IP address assigned to the IPMI, un-check the DHCP box and the IP address, Gateway, and Netmask fields will be visable. 2.9.6 ...
Page 61 2.9 Configuring Network Settings tabs within the window, however, the information you have SSH Setup entered will be retained. Host Keys You may choose to delete individual RSA or DSA host keys. Should you decide to delete the RSA or DSA key, the SSH will function, but that form of server authentication will not be avail- able.
Page 62 2.9 Configuring Network Settings length as supported by the SSH client tool. These public keys are stored in a file in the .ssh directory named . The file is to be formatted such that the key is followed authorized_keys by the optional comment with only one key per line. Note: The file format, line terminations, and other EOL or EOF characters should correspond to UNIX conventions, not Windows.
Page 63 2.9 Configuring Network Settings Should you want to change the key length of any host key, enter the desired length in the text field corresponding to the length you wish to change. Check the Regenerate All Keys box. ...
Page 64 2.9 Configuring Network Settings If you want to completely control the public keys used for authentication, a correctly formatted file formatted as indicated in the OpenSSH web site can be loaded authorized_keys onto VelaSync. You can transfer a new public key file using the Web UI. To view and edit the file: authorized_keys...
Page 65 Creating an SSH session using Public Key with Passphrase Authentication for the admin account You must first provide the secure Spectracom product a RSA public key found typically in the OpenSSH id_rsa.pub file. Then you may attempt to create an SSH session.
Page 66: Snmp
Recommended SSH Client Tools Spectracom does not make any recommendations for specific SSH clients, SCP clients, or SFTP client tools. However, there are many SSH based tools available to the user at low cost or free. Two good, free examples of SSH tool suites are the command line based tool OpenSSH run- ning on a Linux or OpenBSD x86 platform and the SSH tool suite PuTTY.
Page 67 2.9 Configuring Network Settings Navigate to MANAGEMENT > NETWORK: SNMP Setup . The SNMP screen will display: The SNMP screen is divided into 3 panels: The Main panel , which is subdivided into 3 displays: SNMP V1/V2 : This panel allows configuration of SNMP v1 and v2c com- munities (used to restrict or allow access to SNMP).
Page 68 2.9 Configuring Network Settings SysObjID —The System Object ID number. This is editable in the SNMP Status panel (see "Configuring the SNMP Status" below). Contact Information —The email to contact for service. This is editable in the SNMP Status panel (see "Configuring the SNMP Status" below). Location —The system location.
Page 69 Click Submit , or cancel by clicking the X -icon in the top-right corner. Accessing the SNMP Support MIB Files Spectracom’s private enterprise MIB files can be extracted via File Transfer Protocol (FTP) from VelaSync, using an FTP client such as FileZilla or any other shareware/freeware FTP program.
Page 70: Snmp V1/V2C
2.9 Configuring Network Settings techsupport@spectracom.com By default, is the address in the Note: sysContact field of the SNMP Status panel of the SNMP Setup page. 2.9.7.1 SNMP V1/V2c SNMP V1 is the first version of the SNMP protocol, as defined in the IETF (Internet Engineering Task Force) RFCs (Request for Comments) number 1155 and 1157.
Page 71: Snmp V3
2.9 Configuring Network Settings Permissions may be Read Only or Read/Write. The Version field provides a choice of V1 or V2c. Click Submit . The created communities will appear in the SNMP V1/V2 panel: Editing and Deleting Communities To edit or delete a community you have created: ...
Page 72 2.9 Configuring Network Settings Creating Users Navigate to MANAGEMENT > NETWORK: SNMP Setup . In the SNMP V3 panel, click the PLUS icon in the top-right corner. The SNMP V3 Settings window will display. Enter the required information in the fields provided. SNMP User Names and passwords are independent of users that are configured on the Tools/Users page.
Page 73: Snmp Traps
2.9 Configuring Network Settings Editing and Deleting Users To edit or delete a user you have created: Navigate to MANAGEMENT > NETWORK: SNMP Setup . Click the row of the SNMP V3 panel that displays the community you wish to edit or delete.
Page 74 2.9 Configuring Network Settings The SNMP Traps Settings window will display: Enter the required information in the fields provided. (Note that the options will vary con- textually according to your Version The Version field provides a choice between , and [= default] The Community field for the SNMP Community string.
Page 75: Configuring Ntp
MIBs reside under the enterprise identifier @18837.3. For detailed descriptions of the objects and traps supported by the VelaSync, please refer to the Spectracom VelaSync MIB files. See "Accessing the SNMP Support MIB Files" on page 57. 2.10 Configuring NTP Network Time Protocol (NTP) and Simple Network Time Protocol (SNTP) are client-server protocols that are used to synchronize time on IP networks.
Page 76: Checklist Ntp Configuration
2.10 Configuring NTP response time packet to the requesting client. Under typical conditions, VelaSync can service several thousand NTP requests per second without MD5 authentication enabled, and at a some- what lower rate with MD5 authentication enabled. You can either enable or completely disable the NTP Service. When NTP is disabled, no NTP time packets will be sent out to the network.
Page 77 2.10 Configuring NTP The NTP Servers and Peers panels … are located on the right-hand side of the NTP screen: NTP Servers : In this display you can view the NTP Servers that VelaSync detects in your network. It is through this display that you configure external NTP references. See "NTP Servers: Adding, Configuring, Removing"...
Page 78 2.10 Configuring NTP Access Restrictions : Click here to view, change or delete access restrictions to the NTP net- work. (See also "NTP Access Restrictions" on page 78.) Fields in the NTP Access Restrictions table include: Type IP Version IP Mask Auth only Enable Query View NTP Clients : Click here to reveal a table of all the clients your VelaSync is servicing.
Page 79: Dis-/Enabling Ntp
2.10 Configuring NTP see "NTP Status Monitoring" on page 177 . 2.10.3 Dis-/Enabling NTP If you applied NTP configuration changes e.g., added a new NTP Server, VelaSync usually will stop and re-start the NTP Service automatically once you clicked Submit. Changes made to NTP configurations will also take effect after VelaSync is either rebooted or power-cycled.
Page 80: Restoring The Default Ntp Configuration
2.10 Configuring NTP You can search any of the fields for specific information in the Search field at the top of the window. A limit of 10 entries will appear on the screen at any one time. If you have more than 10 clients, you can move through the table using the First , Previous , Next and Last navigation buttons at the bottom of the screen.
Page 81 2.10 Configuring NTP Note that the System Time affects not only NTP output, but also all other aspects of time man- agement e.g., time distributed via channels other than NTP, logging, and time displayed in the Web UI. If VelaSync is operated as a Stratum 2 server, i.e. as a client to a Stratum 1 server (see "NTP Stratum Synchronization"...
Page 82: Ntp Reference Configuration
2.10 Configuring NTP 2.10.7 NTP Reference Configuration VelaSync's NTP Service needs to be setup such that it utilizes the time source ("input reference") you want it to use. There are two options for an NTP Server to derive its time from: ...
Page 83: The Ntp Servers And Ntp Peers Panels
2.10 Configuring NTP 2.10.8.1 The NTP Servers and NTP Peers Panels The NTP Servers and NTP Peers panels display which servers in the network are set up at higher or equal Stratums (Servers or Peers, respectively), and their configurations. These panels are also used to add, configure, or remove NTP Servers and Peers.
Page 84: Ntp Servers: Adding, Configuring, Removing
2.10 Configuring NTP ATC : ASCII time code reference USER : User provided time LOCL : Local reference (synced to itself) INIT : NTP on server/peer is initializing STEP : NTP on server/peer is performing initial synchronization step and restart- AUTH STATUS : Indicates if the selected reference is using MD5 authentication.
Page 85 2.10 Configuring NTP The NTP Servers window opens. Should the list be empty, no servers have been added yet. In the event that added servers are not displayed in the NTP Setup screen/NTP Serv- ers panel, they could not be resolved. Verify the IP address. Note that System servers can- not be edited or deleted.
Page 86: Ntp Peers: Adding, Configuring, Removing
2.10 Configuring NTP 2.10.8.3 NTP Peers: Adding, Configuring, Removing To add, configure, or remove an NTP Peer: Navigate to MANAGEMENT > NETWORK: NTP Setup . The NTP Setup screen appears. The NTP Peers panel displays a list of recognized NTP peers.
Page 87: Ntp Authentication
2.10 Configuring NTP Enable Symmetric Key : Click the checkbox to enable/disable Symmetric Key. See also: "Configuring NTP Symmetric Keys" below. Note: Before you can edit the field, you must set up Symmetric Keys through the Actions Panel. See "NTP: Symmetric Keys (MD5) " below.
Page 88 2.10 Configuring NTP The NTP Symmetric Keys window will display: CREATE a Symmetric Key , click the PLUS icon in the top-right corner, and pro- ceed to Step 4. EDIT an existing key pair, click the corresponding Change button, and pro- ceed to Step 4.
Page 89 2.10 Configuring NTP pair, the client must be set to use one of these MD5 pairs, and the key must be trusted. Key ID —The key ID must be a number between 1 and 65532. Digest Scheme —Choose one of the options from the drop-down list. The available options are: MD5 (the default) SHA1...
Page 90: Ntp Access Restrictions
2.10 Configuring NTP NOTES: Duplicate key IDs are not permitted. NTP requests received by that do not contain an authen- ticator containing a valid Key ID and MD5 message digest pair will be responded to, but no authentication will be performed. An NTP request with valid authenticators results in a valid NTP response with its own valid authenticator using the same Key ID provided in the NTP request.
Page 91 2.10 Configuring NTP The NTP Access Restrictions Status window will display: EDIT an access restriction, click the PLUS icon or the Change button, respectively, and proceed to Step 4. below. DELETE an access restriction, click the corresponding Delete button, and con- firm by clicking OK.
Page 92: Spectracom Technical Support For Ntp
NTP queries into VelaSync services. Click the Submit button. 2.10.11 S pectracom Technical Support for NTP Spectracom does not provide technical assistance for configuring and installing NTP on Unix- www.ntp.org based applications. Please refer to for NTP information and FAQs. Another help- news://comp.protocols.time.ntp...
Page 93: The Ptp Settings Panel
2.11 Configuring PTP Figure 2-10: VelaSync PTP screen For each Ethernet port (ETH0-ETH3) you can toggle PTP functionality ON or OFF . You can also access the "Settings" panel and the "Statistics" panel for each port (see below). 2.11.1.1 The PTP Settings Panel The Settings Panel provides access to the configuration settings, divided into three tabs, which are described below.
Page 94 2.11 Configuring PTP Figure 2-11: Edit PTP Settings panel Protocol tab PTP version : [1, 2] Select Version 1 or Version 2. Domain : [1 through 127] Sets the current PTP Domain Number, as defined in IEEE Std 1588-2008 Section 7.1 Communication Mode : Select multicast, hybrid, or unicast mode.
Page 95: The Ptp Statistics Panel
2.11 Configuring PTP Master is active as the Best Master on the network. When set to OFF, the Master will act as an active master no matter whether or not other masters are present. This may be required for certain PTP profiles. Clock Priority 1 : [0 to 255] (0 is highest priority.
Page 96: Enabling/Disabling Ptp
2.11 Configuring PTP Figure 2-12: PTP Statistics Panel PTP Node : IP address of PTP node. Clock Identity : [e.g., "a0:36:9f:ff:fe:37:b9:5d"] Domain : Domain number of the selected PTP node. Unicast : [0,1] OFF or ON (1) Last Time : [e.g., "2016-08-12 18:19:15"] The last time a packet was received. Average Rate : [e.g., "0.0624986091344933"] Indicates how often the selected message has been detected (in seconds e.g., "1.0"...
Page 97 2.11 Configuring PTP The proper TAI or UTC time (including the current year). The current TAI to UTC offset (required even if the reference’s time is in TAI). Pending leap second information at least a day in advance. CHAPTER • VelaSync User's Manual Rev.
Page 98 2.11 Configuring PTP BLANK PAGE. CHAPTER • VelaSync User's Manual Rev. 1...
Page 99: Managing Time
Managing Time In this document, the notion of Managing Time refers not only to the concept of VelaSync's System Time, but also to reference con- figuration, as well as distribution of time and frequency. The following topics are included in this Chapter: 3.1 The Time Management Screen 3.2 System Time 3.3 Managing References...
Page 100: The Time Management Screen
3.1 The Time Management Screen 3.1 The Time Management Screen The Time Management screen is the point of entry for all System Time -related settings that are user-configurable. To access the Time Management screen: Navigate to MANAGEMENT > OTHER: Time Management . ...
Page 101: System Time
3.2 System Time Local Clocks panel You can create multiple different Local Clocks, as needed. The names of all Local Clocks that have already been created are displayed in the Local Clocks panel. See also "Local Clock(s), DST" on page 100. 3.2 ...
Page 102: System Time
3.2 System Time 3.2.1 System Time Several System Time parameters can be customized: The System Timescale can be changed. A user-defined time can be setup for e.g., for simulation purposes, or if no external ref- erence is available. The battery-backed RTC time can be used as System Time, until an external reference become available.
Page 103: Timescales
3.2 System Time TAI : International Atomic Time (Temps Atomique International). The TAI time scale is based on the SI second and is not adjusted for leap seconds. As of October 2017, TAI is ahead of UTC by 36 seconds. TAI is always ahead of GPS by 19 seconds.
Page 104: Manually Setting The Time
3.2 System Time the reference is selected. If an output reference is using the GPS or TAI timescale, and the System Time is set to “UTC”, then the GPS Offset box in the Edit GPS Offset window must be populated with the proper timescale offset value in order for the time on the output reference to be correct.
Page 105 NOTE: Except for testing purposes, you should not choose a date other than the current day. Set Year Only : Some legacy time formats (e.g., IRIG) do not support years. Check- ing this box will open a data entry field to manually set the year. Spectracom CHAPTER •...
Page 106: Using Battery Backed Time On Startup
3.2 System Time recommends not to utilize this feature, unless the IRIG format you are using does provide a YEAR field. Synchronize to Battery Backed Time on Startup : See "Using Battery Backed Time on Startup" below. Click Submit at the precise moment desired. ...
Page 107 3.2 System Time Note: The Battery Backed Time is also referred to as the time maintained by the integrated Real-Time Clock (RTC). Use Cases Using the Battery Backed Time on Startup is typically used in these cases: If the synchronization state is to be reached as quickly as possible, even if this means the time distributed initially will most likely be less accurate than an external time reference.
Page 108: Timescale Offset(S)
3.2 System Time The Edit System Time window will display. Select the checkbox Synchronize to Battery Backed Time on Startup : Click the Submit button. 3.2.2 Timescale Offset(s) Timescale offsets account for fixed differences between timescales, in seconds. Timescale offsets may change because of leap seconds, see "Leap Seconds"...
Page 109: Leap Seconds
3.2 System Time Note: Since the GPS Offset and the TAI Offset have a fixed relationship, only the GPS Offset can be set. If only the TAI offset is known, subtract 19 from it, in order to obtain the GPS offset. Note that the data stream of GPS and several other external references includes information about a pending Leap Second, and as such automatically corrects for a Leap Second.
Page 110: Leap Second Alert Notification
3.2 System Time GNSS Receiver (if available as an input reference): The GNSS satellite system transmits information regarding a Leap Second adjustment at a specific Time and Date an arbit- rary number of months in advance. Input references other than GNSS : Some of the other available input references (e.g., IRIG, ASCII, NTP) can also contain pending Leap Second notification in their data streams (see chapter below).
Page 111: Configuring A Leap Second
3.2 System Time Sequence of seconds output when adding a second ("positive Leap Second"): 56, 57, 58, 59, 60 , 0, 1, 2, 3 … Sequence of seconds output when subtracting a second ("negative Leap Second"): 56, 57, 58, 0 , 1, 2, 3, 4 … 3.2.3.4 ...
Page 112: Local Clock(S), Dst
3.2 System Time Note: The Delete button in the Edit Leap Second window will only be visible if a leap second has been set beforehand. 3.2.4 Local Clock(s), DST The Local Clock feature allows for maintaining one or several local times. These times will reflect a time offset, thereby accounting for Time Zone, and DST (Daylight Savings Time) correction.
Page 113 3.2 System Time In the UTC Offset field, choose a UTC Offset from the drop-down list. All of the UTC Offset drop-down selections are configured as UTC plus or minus a set number of hours. Examples for the US: For Eastern , choose UTC–05:00; for Central , choose UTC- 06:00;...
Page 114: Dst Examples
3.2 System Time allows the DST rules to be edited without the need to perform a soft- ware upgrade for a new DST rule to be defined. Select this drop- down and enter the DST parameters for the new rule. ...
Page 115: Dst And Utc, Gmt
3.3 Managing References MANAGEMENT > Time Management: Local Clocks > (+): Local Clock 1. In the window: MANAGEMENT > Time Management: Local Clocks > (+): Local Clock 2. Navigate to UTC Offset 3. From the pull-down menu, select “UTC -05:00”. Use DST Rules 4.
Page 116 Note: The References shown on your screen may look different from the ones in the illustration below, depending on your PRISMA VelaSync High-Speed Enter- prise Time Server model and hardware configuration. Each available type of Time and 1PPS input reference is assigned a human-readable name or “title”...
Page 117: Configuring Input Reference Priorities
3.3 Managing References IRIG 0 = 1 IRIG input instance Frequency 1 = 2nd frequency input instance NTP 2 = 3rd NTP input instance The columns of the Reference Priority table are defined as follows: Priority —Defines the order or priority for each index (row). The range is 1 to 16, with 1 being the highest priority and 16 being the lowest priority.
Page 118 3.3 Managing References The Configure Reference Priorities panel, which displays the priority of VelaSync’s ref- erences in a table form. In this panel you can: Add and configure new references Delete references Enable/disable references Reorder the priority of VelaSync’s references ...
Page 119 3.3 Managing References Navigate to the Configure Reference Priorities screen via MANAGEMENT > OTHER: Refer- ence Priority . In the Configure Reference Priorities table click the Delete button on the right-hand side of the entry you wish to delete. ...
Page 120: The "Local System" Reference
3.3 Managing References 3.3.1.2 The "Local System" Reference The Local System reference is a "Self" reference, i.e. VelaSync uses itself as an input reference for Time, or as a 1PPS reference. The Local System is a unique input reference in that it can be but never both used as either the Time reference, or the 1PPS reference, Note:...
Page 121 3.3 Managing References Caution: Since the User/User reference is not traceable to a valid reference, it does not qualify as a legitimate time source. Operating VelaSync with a manually User time bears the risk of inadvertently outputting an illegitimate System Time thought to be a valid reference time.
Page 122: Reference Priorities: Examples
3.3 Managing References See also below, " ": The notion of limiting the How long will the User/User reference be valid? validity of the User/User reference also serves as a safety feature. How long will the User/User reference be valid? Since the User/User reference does not qualify as a legitimate, traceable time, it becomes invalid once VelaSync is reset, or power-cycles, or after the Holdover Time expires (whichever occurs first).
Page 123 3.3 Managing References default Since both of these references are references, no additional references need to be added to the Reference Priority table. Example 2 – IRIG as primary reference, NTP input as backup In this use case, the objective is to use: IRIG as the primary reference input Another NTP server as backup reference Step-by-step procedure:...
Page 124 3.3 Managing References Note: In order for a manually set time to be considered valid and used to syn- chronize VelaSync, a “User” needs to be created and enabled in the Reference Priority table. "The "User/User" Reference" on page 108. In this use case, the objective is to use a hand-set time, in combination with VelaSync's oscillator as a 1PPS source as valid references.
Page 125: The Gnss Reference
3.3 Managing References Since “Local System” cannot be both Time , and 1PPS input together, in this example the GNSS input will be set as the 1PPS reference (other use cases may require using different references, e.g. IRIG.) As there is no default entry for “Local System” and “GPS”, a new entry needs to be added to the Reference Priorities table in order to use this combination of references.
Page 126: Reviewing The Gnss Reference Status
3.3 Managing References To access the GNSS Receiver settings: Navigate to INTERFACES > REFERENCES: GNSS 0 . Note: Typically, there will be only one GNSS reference, numbered "0". The GNSS 0 status window will open. To open the configuration window, click Edit in the bottom-left corner.
Page 127 3.3 Managing References Navigate to INTERFACES > REFERENCES: GNSS Reference . Click the INFO button next to GNSS 0 . The GNSS 0 status window will display; it con- tains two tabs, explained in detail below: Main [= default], and Satellite Data . The "Main"...
Page 128 3.3 Managing References Under the Main tab, the following information will display: Note: Detailed information on the different parameters can be found in the sub- sequent GNSS topics. CHAPTER • VelaSync User's Manual Rev. 1...
Page 129 3.3 Managing References Manufacturer/Model : The manufacturer and/or model of the GNSS receiver in your VelaSync unit. Validity : Status indicator lights for TIME and 1PPS signals: “ On ” ( green ) indicates a valid signal, “ Off ” ( ) indicates that no valid signal is available.
Page 130 3.3 Managing References With your mouse pointer, hover over a bar graph to display tool tip information about satellite constellation, satellite number, and signal strength. Letter Symbol GNSS Constellation GLONASS Galileo QZSS BeiDou IRNSS The "Satellite Data" tab Under the Satellite Data tab, there are two graphs: Number of Satellites over Time : A graphical track of how many satellites were being tracked over time.
Page 131: Determining Your Gnss Receiver Model
3.3.2.2 Determining Your GNSS Receiver Model Note: All PRISMA VelaSync models are currently shipped with a u- blox M8T Receiver. To determine which GNSS receiver model is installed in a VelaSync unit: ...
Page 132: Selecting A Gnss Receiver Mode
3.3 Managing References Production dates : Since 2016 Constellations : GPS, Galileo, GLONASS, BeiDou, QZSS Other characteristics: Client A-GPS option: Yes Server A-GNSS option: Yes Resurvey : Automatic, after being moved and rebooted — can be changed, see "Setting GNSS Receiver Dynamics" on page 122. Multi-GNSS reception: Yes, within these permissible settings: Galileo GLONASS...
Page 133 3.3 Managing References a vehicle, ship or aircraft. Offset [ns]: to account for antenna cable delays and other latencies Receiver dynamics : to optimize performance for land, sea or air operation The ability to delete the stored GNSS position information (latitude, longitude and antenna height).
Page 134: Setting Gnss Receiver Dynamics
3.3 Managing References the equipment will be relocated to another location and the receiver detects this (applies to most Trimble receivers) you manually delete the GNSS position, see "Deleting the GNSS Receiver Position" on page 127. In the event that VelaSync cannot complete a GNSS survey within 24 hours (e.g., the survey pro- gress does not go beyond 99%), see "Single Satellite GNSS Receiver Mode"...
Page 135 3.3 Managing References Caution: If you select a setting that does NOT resurvey, and subsequently relocate your unit (antenna) by more than 100 m, u-blox M8T Trimble Res-T receivers will NOT detect the new position, and hence provide an incorrect time. For more information about the GNSS Survey , see "Performing a GNSS Receiver Survey"...
Page 136: Performing A Gnss Receiver Survey
3.3 Managing References The u-blox M8T receiver now uses to indicate it will RESURVEY on reboot, and Land Sta- tionary to indicate it will not resurvey after reboot. 3.3.2.5 Performing a GNSS Receiver Survey stationary applications Note: This topic only applies to –...
Page 137: Gnss Receiver Offset
3.3 Managing References Note: Once a survey has been initiated, the Survey Progress may not be displayed right away until the receiver has completed its initialization pro- cess. 3.3.2.6 GNSS Receiver Offset The Offset setting in the GNSS configuration window ( INTERFACES > GNSS 0 > " Edit ") allows you to enter an offset to the GNSS time and 1PPS reference in order to account for antenna cable delays or other latencies (entered and displayed in nanoseconds).
Page 138: Resetting The Gnss Receiver
V = Nominal velocity of propagation expressed as decimal, i.e. %66 = 0.66 Value is provided by cable manufacturer. When using Spectracom LMR-400 or equivalent coaxial cable, this formula equates to approx- imately 1.2 nanoseconds of delay per every foot of cable. To calculate the Offset value (cable delay), multiply the length of the entire cable run by “1.2”...
Page 139: Deleting The Gnss Receiver Position
3.3 Managing References Locate the Reset Receiver box, check it, and click Submit. 3.3.2.8 Deleting the GNSS Receiver Position The VelaSync timing system requires the exact geographic position in order to calculate the exact system time from the GNSS signal. The Delete Position command deletes the GNSS antenna position data that is stored in the non- volatile memory of the GNSS receiver.
Page 140: Manually Setting The Gnss Position
3.3 Managing References Disconnect the GNSS antenna from the VelaSync unit (this is required only when san- itizing the unit). Navigate to Interfaces > References: GNSS Reference . Click on the GEAR button next to the GNSS Reference (typically, there is only one ref- erence, numbered "0").
Page 141 3.3 Managing References Depending on where your GNSS antenna is installed and thus, how good the reception is, the self survey may be adequate for most applications. Setting a Manual Position , however, i.e. manually applying your current geographic position data (Latitude, Longitude, and Altitude) may be necessary if your GNSS receiver could not com- plete its survey due to poor reception.
Page 142: Gnss Constellations
3.3 Managing References Note: Should you prefer to determine your position in a different way, and as a result, have your latitude & longitude data in degrees/minutes/ seconds, you need to convert this data to the decimal format e.g., by using www.earthpoint.us a conversion tool, such as Earth Point , or...
Page 143 3.3 Managing References Note: As of System software version 5.7.0, the Multi GNSS Option is no longer required to receive several constellations simultaneously. After an upgrade, the previous constellation settings will be maintained. To learn more about determining which receiver model is installed in your unit, and which GNSS constellations and combinations are supported, see "Determining Your GNSS Receiver Model"...
Page 144 QZSS is disabled by default. In order to receive QZSS signals, you must either be located in the Japan region, or use a GNSS simulator (such as Spectracom GSG-5 or -6 Series). QZSS is not considered a standalone constellation and while VelaSync allows you to enable QZSS by itself, it is recommended to use it in combination with GPS.
Page 145 3.3 Managing References Under Identified Satellite Signal Strengths hover with your cursor over the bars: The letter in the tooltip window displayed for each signal bar indicates which constellation the satellite belongs to: Letter symbol GNSS Constellation GLONASS Galileo QZSS BeiDou IRNSS...
Page 146: A-Gps
A-GNSS server An A-GNSS server allows a VelaSync unit to operate as a server, thus providing A-GNSS eph- emeris and almanac data to other client devices e.g., a Spectracom GSG-series GNSS sim- ulator. The A-GNSS functionality largely depends on the GNSS receiver model installed in your unit:...
Page 147 3.3 Managing References Note: The options displayed on your screen depend on your system con- figuration. Configure the menu options as required: Enable A-GPS Client This feature will schedule assistance data to be collected and updated every hour. On startup, if data is present, it will be sent to the receiver.
Page 148 3.3 Managing References Generate RINEX/YUMA Files Note: Regardless of which receiver is installed in your unit, the GNSS [x] Status window will display the text " Server A-GNSS Status/Data ", even though RES-SMT GG receivers support only GPS server functionality. RES-SMT GG receiver If the option RINEX Server License ( OPT-AGP ) and a RES-SMT GG GNSS receiver are installed on your VelaSync, it can be operated as an A-GPS server .
Page 149 3.3 Managing References Note: YUMA files (almanac data) are valid for day. The files can be remotely accessed via the path on the VelaSync or via the mapped /pub drive. Confirming that the A-GPS RINEX Server License is installed on your unit Navigate to TOOLS >...
Page 150: Holdover Mode
Any device that can use RINEX data, can be directed to the locations where they are stored. For example, Spectracom's GSG-series GNSS simulators allow for a server location to be set. With other equipment, you can also download the data to your computer, and then move the files to where they are needed.
Page 151 3.3 Managing References Any enabled and valid input reference becomes available again: If one or more ref- erences return and are declared valid before the Holdover period has expired (even momentarily, i.e. for at least one second), VelaSync exits the Holdover mode and returns to its fully synchronized state.
Page 152 3.3 Managing References For more information on the TFOM value and Phase Error Limit, see "Configuring the Oscillator" on page 143. Note: Changes made to the Holdover Timeout always take effect immediately. If VelaSync is in Holdover and the Holdover timeout is changed to a value that is less than the current time period that VelaSync has been in Holdover Mode, the unit will immediately declare loss of synchronization.
Page 153 3.3 Managing References To find out which type of oscillator is installed in your VelaSync, navigate to MANAGEMENT > OTHER: Disciplining , and look for the line item Oscillator Type in the Status panel. Typical Holdover lengths The length of the allowed Holdover Timeout period is displayed and configured in seconds. The table below provides example conversions for typically desired Holdover periods.
Page 154: Managing The Oscillator
3.4 Managing the Oscillator need to be set manually again in order for VelaSync to return to its fully synchronized state. See "The "User/User" Reference" on page 108 and "Manually Setting the Time" on page 92 for more information. 3.4 Managing the Oscillator The purpose of the built-in oscillator is to provide VelaSync with an accurate and very stable internal frequency source.
Page 155: Configuring The Oscillator
3.4 Managing the Oscillator Note: Host disciplining is NOT supported by VelaSync units that are equipped with a Rubidium oscillator. The Oscillators Settings page provides the user with some control of the disciplining process. This page is also used to configure the length of time VelaSync is allowed to remain in the Hol- dover mode when all references are lost.
Page 156: Time Figure Of Merit (Tfom)
3.4 Managing the Oscillator cause the disciplining tracking to restart automatically (after a few minutes delay) if that limit is exceeded. This will help to quickly re-align the System 1PPS with a reference. When using a Host Reference as a primary or backup reference, for improved performance it is recommended to set the phase error limit for NTP to a suggested value of 100000 ns (= 1 second).
Page 157: Monitoring The Oscillator
3.4 Managing the Oscillator Reported TFOM Value Estimated Time Error (ETE) 100 nsec < ETE <= 1 μsec 1 μsec < ETE <= 10 μsec 10 μsec < ETE <= 100 μsec 100 μsec < ETE <= 1 msec 1 msec < ETE <= 10 msec 10 msec <...
Page 158 3.4 Managing the Oscillator Navigate to MANAGEMENT > OTHER: Disciplining . The Oscillator Management screen will display. It consists of two panels: The Oscillator Status Panel This panel provides comprehensive information on the current status of VelaSync's timing state. Oscillator Type : Type of oscillator installed in the unit.
Page 159 3.4 Managing the Oscillator value over time is desirable and suggests steady oscillator performance (see also the graph in the History Panel). DAC Step : Step size for adjustments to the internal oscillator, as determined by the oscil- lator disciplining system. Larger steps = quicker, but coarser adjustments. The step size is mainly determined by the type of oscillator.
Page 160: Oscillator Logs
3.4 Managing the Oscillator You can zoom in on any of the graphs by grabbing the handles at either end and pulling them inwards. The graph will focus in on the time interval you choose in real time. Clicking on the Delete icon in the top-right hand corner will erase all current oscillator log data. Clicking on the Download arrow icon will download the latest oscillator log data as a .
Page 161: System Administration
System Administration The following topics are included in this Chapter: 4.1 Issuing the HALT Command Before Removing Power 4.2 Rebooting the System 4.3 Hardware Tasks 4.4 Notifications 4.5 Managing Users and Security 4.6 Miscellanous Typical Configuration Tasks 4.7 Quality Management 4.8 Updates and Licenses CHAPTER •...
Page 162: Issuing The Halt Command Before Removing Power
4.1 Issuing the HALT Command Before Removing Power 4.1 Issuing the HALT Command Before Removing Power Gracefully shutting down VelaSync by using the HALT command offers the following advant- ages over shutting the unit down : The shutdown process will be logged The System Clock will update the Real Time Clock with the latest System Time.
Page 163: Hardware Tasks
4.3 Hardware Tasks Navigate to TOOLS > SYSTEM: Reboot/Halt . Select the Restart after Shutdown box in the Reboot/Halt window. VelaSync will now be rebooted and be accessible again shortly thereafter. Rebooting via USB Port, Telnet, SSH, SNMP With a serial connection to the USB port, telnet connection or SSH connection, type reboot <Enter>...
Page 164: Removing/Installing A Hard Disk Drive
4.3 Hardware Tasks Figure 4-1: Power supply removal Replace the failed power supply module with a replacement unit. Note: Only use the approved type of power supply, for more information, "Maintenance and Service" on page 220. Simply push the new power supply module into the empty bay until you hear a click. ...
Page 165 4.3 Hardware Tasks Removing the bezel Remove the front bezel from the chassis, by unlocking it with the key, then pressing the red release knob, then removing the bezel with both hands. While the bezel is removed, check if the filter requires cleaning or replacement. Figure 4-2: ...
Page 166: Notifications
4.4 Notifications To install an HDD into a carrier , insert it into the carrier with its PCB facing down. Check align- ment, then use the three screws on either side to assemble the two components. To install a carrier into VelaSync, follow the instructions shown above Removing the HDD carrier in reverse order.
Page 167: Configuring Notifications
The SNMP Setup button: See "SNMP" on page 54. The Email Setup button: Configure VelaSync's interface settings for Exchange email servers and Gmail. For more information on this subject, see the Spectracom Technical Note Email Notification Setup Events panel, offering three tabs: Timing : Events for Sync Status and Holdover, Frequency error, Input ref- erences and the internal oscillator.
Page 168: Notification Event Types
4.4 Notifications The columns under each tab are: Event —This is the event that will trigger the notification. The events under each tab will vary according to context. Mask Alarm —Check here to enable an alarm mask. Enabling an alarm mask for a given notification will prevent that notification from generating an alarm con- dition.
Page 169: Timing Tab: Events
4.4 Notifications 4.4.2.1 Timing Tab: Events In Sync Not In Sync In Holdover No Longer in Holdover Frequency Error Frequency Error Cleared 1PPS Not In Specification 1PPS Restored to Specification Oscillator Alarm Oscillator Alarm Cleared Reference Change (Cleared) Reference Change 4.4.2.2 ...
Page 170: Configuring Gps Notification Alarm Thresholds
4.4 Notifications Timing System Software Error Timing System Hardware Error High Temperature Temperature alarms are based on the CPU temperature., Minor Alarm High Temperature, Minor, Cleared High Temperature, Major Alarm High Temperature, Major, Cleared 4.4.3 Configuring GPS Notification Alarm Thresholds VelaSync allows you to configure Minor and Major alarm thresholds for the GNSS receiver.
Page 171: Setting Up Snmp Notifications
4.4 Notifications Navigate to MANAGEMENT > OTHER: Notifications , and choose the GPS tab. At the bottom of the window, locate the ALARM THRESHOLD panel: In the Minimum Satellites fields enter the minimum number of satellites that must be avail- able before the alarm is triggered.
Page 172: Setting Up Email Notifications
4.4 Notifications 4.4.5 Setting Up Email Notifications The Email Setup window provides a means to configure VelaSync with the necessary settings to interface it with Exchange email servers and Gmail. To set up Notification Emails: Navigate to MANAGEMENT> OTHER: Notifications . ...
Page 173 4.4 Notifications #set smtp-auth-password=<password> #set smtp-auth=login E x a m p l e I I : S M T P i n t e r f a c e t o G m a i l #set smtp=smtp.gmail.com:587 #set smtp-use-starttls #set ssl-verify=ignore #set smtp-auth-user=<user name, example user_xyz123@gmail.com>...
Page 174: Managing Users And Security
"factory" The default factory account with the username is meant to provide access to spfactory Spectracom technical support personnel. You can delete this account, if you so prefer. Note, Clean and Halt Cleaning the Configuration however, that executing the...
Page 175 4.5 Managing Users and Security The status information presented, however, will be largely identical. The most significant differences are visible in the MANAGEMENT menu, since most of the Setup menus are hidden from "user" accounts: Account Differences, by Menu INTERFACES Menu "user"...
Page 176: Rules For Usernames
4.5 Managing Users and Security Notifications : "user" can access this page and modify settings. Time Management : "user" can access this page and modify settings. Front panel : "user" can access this page and modify settings. Log Configuration : "user" can access this page and modify settings. Disciplining : "user"...
Page 177 However, the account name spadmin cannot be changed, and the account cannot be removed from VelaSync. Note: account is for use by Spectracom service personnel. spfactory While the account can be deleted by an administrator, it should spfactory be noted that this may potentially limit remotely provided technical support.
Page 178: Managing Passwords
4.5 Managing Users and Security Enter a Password . The password requirements are configurable, see "Managing Pass- words" below. By default a password can be any combination of upper- and lower-case characters. Minimum password length = 8 characters, maximum length = 32 characters. ...
Page 179: Configuring Password Policies
4.5 Managing Users and Security 4.5.2.1 Configuring Password Policies To configure password requirements e.g., rules for minimum password length and special char- acters: Navigate to MANAGEMENT > OTHER: Authentication . In the Actions panel, click Security Policy . ...
Page 180: Lost Password
4.5 Managing Users and Security Note: To follow this procedure, you must be logged in as the user. If spadmin you are unable to login as , follow the procedure outlined in "Lost Pass- spadmin word" below. If the password has already been changed from the default value, but the current value is no longer known, the administrator password can be reset back to the factory default value, see "Lost Password"...
Page 181 4.5 Managing Users and Security spadmin Resetting the account password does not reset any user-created account passwords. spadmin This process only resets the account password. spadmin Any user with administrator rights can reset the password through the MANAGEMENT > OTHER: Authentication window. Changing the "spadmin"...
Page 182: Web Ui Timeout
4.6 Miscellanous Typical Configuration Tasks To reset the "spadmin" account password via the serial port, or SSH: Connect a PC to the port, and log in using an account with admin group rights (such as spadmin account). spadmin Type: <Enter>.
Page 183 4.6 Miscellanous Typical Configuration Tasks Figure 4-4: Login banner (example) To configure a login banner: Navigate to the MANAGEMENT > Network Setup screen. In the Actions panel on the left, click Login Banner . The Network Access Banner window will display. Check the box Enable Custom Banner . ...
Page 184: Show Clock
4.6 Miscellanous Typical Configuration Tasks functionality is limited to browser-based Web UI access. To test your new banner, click Apply to see a preview at the bottom of the window. OR, click Submit , and log out of the Web UI, and back in so as to see the banner on the actual login page.
Page 185: Synchronizing Network Pcs
Frequently, network PCs have to be synchronized to VelaSync via the Ethernet port, using NTP (Network Time Protocol). A detailed description on how to synchronize Windows PCs can be found online in the Spectracom Technical Note Synchronizing Windows Computers on the Spectracom website .
Page 186 4.7 Quality Management Status Monitoring via the HOME Screen The HOME screen of the VelaSync Web UI provides a system status overview (see also "The Web UI HOME Screen" on page 13). The HOME screen is divided into four panels System Status panel Reference —Indicates the status of the current synchronizing reference, if any.
Page 187 4.7 Quality Management REFERENCE : Indicates the name type of each reference. These are determined by the inputs set up for the VelaSync PRIORITY : Indicates the priority of each reference. This number will be between 1 and 15. References in this panel appear in their order of priority. See "Configuring Input Reference Priorities"...
Page 188: Ethernet Monitoring
4.7 Quality Management Disk Status panel This panel displays: Total: [MB] Used: [MB] Free: [MB] Percent: [%] The last item refers to system storage. If you need to update the System Software, and this num- ber is 70% or higher , it is recommended to clear logs and stats in order to free up memory space.
Page 189: Ntp Status Monitoring
4.7 Quality Management Navigate to TOOLS > SYSTEM: Ethernet Monitor . The Ethernet monitoring screen opens: The data displayed is linked to a specific Ethernet port e.g., ETH0. If you enable additional Eth- ernet ports, their throughput data will also be displayed. In the Traffic pane on the right the traffic throughput in Bytes per second is displayed in two graphs.
Page 190: Monitoring The Oscillator
4.7 Quality Management To access the NTP Status Summary panel, navigate to MANAGEMENT > NETWORK: NTP Setup . The NTP Status Summary panel is at the lower left of the screen. The panel contains the fol- lowing information: Selected Ref —The reference VelaSync is currently using.
Page 191 4.7 Quality Management Navigate to MANAGEMENT > OTHER: Disciplining . The Oscillator Management screen will display. It consists of two panels: The Oscillator Status Panel This panel provides comprehensive information on the current status of VelaSync's timing state. Oscillator Type : Type of oscillator installed in the unit.
Page 192 4.7 Quality Management value over time is desirable and suggests steady oscillator performance (see also the graph in the History Panel). DAC Step : Step size for adjustments to the internal oscillator, as determined by the oscil- lator disciplining system. Larger steps = quicker, but coarser adjustments. The step size is mainly determined by the type of oscillator.
Page 193: Logs
4.7.2 Logs VelaSync maintains different types of event logs (see below) to allow for traceability, and for record keeping. Should you ever require technical support from Spectracom, you may be asked for a copy of your logs to facilitate remote diagnosis.
Page 194 4.7 Quality Management Reference change : VelaSync has selected a different Time and 1PPS input reference for synchronization. Either the previously selected input reference was declared not valid (or was lost), so a lower priority reference (as defined by the Reference Priority Setup table) is now selected for synchronization OR a valid reference with higher priority than the previous reference is now selected for synchronization.
Page 195 4.7 Quality Management Frequency Error cleared : The Frequency Error alarm was asserted but was then cleared. In Holdover : Input references were available, but all input references have since been lost. If the references are not restored before the Holdover period expires, time sync will be lost.
Page 196 4.7 Quality Management GPS Qualification Log If VelaSync is connected to a GNSS antenna and is tracking satellites, this log contains a run- ning hourly count of the number of GNSS satellites tracked each hour. This history data can be used to determine if a GNSS reception problem exists and whether this is a continuous or inter- mittent reception issue.
Page 197: The Logs Screen
4.7 Quality Management Note: If VelaSync is not connected to a GNSS antenna, this log will remain empty. System Log Displays log entries related to the Timing System events and daemon events (such as the Alarms, Monitor, Notification, or SNMP daemons starting or stopping, etc.) Timing Log Displays log entries related to Input reference state changes (for example, IRIG input is not con- sidered valid), antenna cable status.
Page 198: Displaying Individual Logs
The VelaSync Web UI offers a convenient way to save, bundle, and download all logs in one simple step. This feature may be useful when archiving logs, for example, or for troubleshoot- ing technical problems: Spectracom Technical Support/Customer Service may ask you to send them the bundled logs to remotely investigate a technical concern.
Page 199 Microsoft Excel . You may want to review and/or keep this data for your own records, or you may be asked by Spectracom Technical Support to download and send the oscillator status log in the event of technical problems.
Page 200: Setting Up A Remote Log Server
4.7 Quality Management 4.7.2.5 Setting up a Remote Log Server Storing log files on a remote log server supports advanced logging functionality. Adding a remote log server: Navigate to MANAGEMENT > OTHER: Log Configuration. In the Remote Log Server panel, click on the PLUS icon in the top-right corner of the panel. The Add Remote Log Servers window displays.
Page 201: Clearing All Logs
In the Web UI, navigate to Tools > Upgrade/Backup . Follow the instructions in the Updating software from command line panel. The terms update and upgrade are both used throughout Spectracom technical literature, as software releases may include fixes and enhancements, as well as new features. CHAPTER •...
Page 202 4.8 Updates and Licenses BLANK PAGE. CHAPTER • VelaSync User's Manual Rev. 1...
Page 203: Appendix
Appendix The following topics are included in this Chapter: 5.1 Troubleshooting 5.2 Command-Line Interface 5.3 IRIG Standards and Specifications 5.4 Choosing a GNSS Antenna Location 5.5 Maintenance and Service 5.6 Product Registration 5.7 Links to External Information 5.8 Technical Support 5.9 Return Shipments 5.10 License Notices 5.11 List of Tables...
Page 204: Troubleshooting
APPENDIX 5.1 Troubleshooting This section is intended to assist you with troubleshooting VelaSync. The WebUI provides status information that can be used to help troubleshoot failure symptoms that may occur. ® Please also consult the OEM documentation for Supermicro™ SuperO SuperServer 5018R- WR which can be found online under: https://www.supermicro.com/manuals/superserver/1U/MNL-1771.pdf...
Page 205: Troubleshooting: System Configuration
APPENDIX Timing System Error : A problem has occurred in the Timing System. Contact Spectracom technical support if the error continues. 5.1.2 Troubleshooting: System Configuration One of the first tasks when troubleshooting a unit is to read out the current system configuration (you may also be asked for this when contacting Spectracom Technical Support.)
Page 206: Troubleshooting - Unable To Open Web Ui
APPENDIX 5.1.3 Troubleshooting – Unable to Open Web UI With VelaSync connected to either a stand-alone or networked PC and with the network con- figuration correct, it should be possible to connect to the Web UI. Verify Current Status Indication Troubleshooting LEDs on...
Page 207 APPENDIX Web UI Page loc- Current Status Indication Troubleshooting ation HOME page, Sys- SYNC indicator is not “lit” VelaSync is in All available Input References have (not Green).HOLD indic- Holdover been lost. The Reference Status table tem Status panel, ator is “lit” (Orange).— mode—OR—...
Page 208: Troubleshooting Gnss Reception
VelaSync will go out of sync. The GNSS reception issue needs to be troubleshot in order to regain time sync. For additional information on troubleshooting GNSS reception issues with VelaSync, please here refer to the GNSS Reception Troubleshooting Guide , available on the Spectracom website. VelaSync User's Manual...
Page 209: Troubleshooting Hardware Issues
Do not user power supplies other than the original model installed in the unit. Replacement power supplies can be procured directly from Spectracom (part no. PS09R-070J-SL01), or from the OEM manufacturer, Supermicro Computer (model PWS-651-1R).
Page 210: Troubleshooting - Network Pcs Cannot Sync
The network clients have to be configured to synchronize to VelaSync's address. For additional information on syncing Windows PC's, see https://spectracom.com/documents/synchronizing-windows-computers . The last section of this document also contains troubleshooting assistance for Windows syn- chronization. For UNIX/Linux computer synchronization, please visit http://www.ntp.org/...
Page 211: Troubleshooting Software Update
APPENDIX If at least one PC can sync to VelaSync, the issue is likely not with VelaSync itself. The only VelaSync configurations that can prevent certain PCs from syncing to the time server are the NTP Access table and MD5 authentication. See "Configuring NTP Symmetric Keys"...
Page 212: Cli Commands
APPENDIX Spectracom does not distribute or support its own terminal emulator, and newer Microsoft oper- ating systems no longer include HyperTerminal. However, there are several third-party open- ® ® source programs available, such as TeraTerm or PuTTY . The example below illustrates the use of TeraTerm.
Page 213 Displays current date (for example, 15 APR 2015) dateset Used to set the current date defcert Used to create a new Spectracom self-signed SSL certificate for HTTPS in case of expir- ation of the original certificate dhcp4get Displays whether DHCP is enabled...
Page 214 APPENDIX Command Description gpssat Displays GNSS satellites tracked and maximum signal strength being received Displays configured IPv4 gateway addresses gw4get gw4set Used to configure the IPv4 gateway addresses Displays configured IPv6 gateway address gw6get gw6set Used to configure the IPv6 gateway address halt Used to Halt the system for shutdown helpcli...
Page 215 APPENDIX Command Description oscget Displays the installed system oscillator portget Display whether network port is enabled (for example, "portget ETH2") portset Enable or disable a network port: "portset x on" where "x" is the port number (for example, "ETH2") "portset X off" [NOTE: Available since Web UI Revision no.
Page 216 APPENDIX Command Description rt6get Displays the configured IPv6 static routes saveconf Generate archive of current configuration savelog Generate archive of all log files scaleget Displays configured system timescale scaleset Used to configure the system timescale services Displays the state of services (enabled/disabled) servget Displays the state of individual services servset...
Page 217: Irig Standards And Specifications
APPENDIX 5.3 IRIG Standards and Specifications 5.3.1 About the IRIG Output Resolution The IRIG output signals are generated from VelaSync's System Time, which can be synced to one or more external input references (such as GPS, IRIG, PTP, etc). The accuracy of the System time to true UTC time is dependent upon what the selected external reference is (with GPS typ- ically being the most accurate reference for the system to sync with).
Page 218 APPENDIX Time Frame Inter- Format Encoding Modulation Carrier Coded Expressions Bit rate IRIG-A A004 DCLS , BCD , CF and 1000 pps 0.1 sec YEAR IRIG-A A005 DCLS , BCD , and CF 1000 pps 0.1 sec YEAR IRIG-A A006 DCLS , BCD 1000 pps 0.1 sec...
Page 219 APPENDIX Time Frame Inter- Format Encoding Modulation Carrier Coded Expressions Bit rate IRIG-B B124 1 kHz , BCD , CF and 100 pps 1 sec YEAR IRIG-B B125 1 kHz , BCD , and CF 100 pps 1 sec YEAR IRIG-B B126 1 kHz...
Page 220 27 control bits and format E had 45 bits for control functions. These control bits could be used for any use and there was no defined function. Spectracom used the control function ele- ment at index count 55 as the TIME SYNC STATUS and the sub-frame after position identifiers P6 and P7 as the year info and for format E the sub-frame after P8 and P9 for the straight bin- ary seconds (SBS).
Page 221: Irig B Output
APPENDIX IRIG Standard 200-04. IRIG Standard 200-04 incorporated the year information after P5 and reduced the allocated control bits to 18 for format B and 36 for format E. Note: DCLS is DC Level Shifted output, pulse width modulated with a position identifier having a positive pulse width equal to 0.8 of the reciprocal of the bit rate, a binary one (1) having a positive pulse width equal to 0.5 of the reciprocal of the bit rate and a binary zero (0) having a positive pulse width equal to 0.2 of...
Page 222 APPENDIX Figure 5-1: IRIG B time code description The IRIG B code contains the Binary Coded Decimal (BCD) time of year, Control Function (CF) field and the Straight Binary Seconds time of day. The following figure illustrates the IRIG B data structure.
Page 223 APPENDIX Code word - 17 binary digits. Seconds only, recycles daily. Code word structure: BCD : Word seconds digits begin at index count 1. Binary coded elements occur between position identifier elements P0 and P5 (7 for seconds, 7 for minutes, 6 for hours, and 10 for days) until the code word is complete.
Page 224 APPENDIX Reference marker, 1 per second. The reference marker appears as two consecutive pos- ition identifiers. The second position identifier marks the on-time point for the succeeding code word. Resolution: Pulse width coded signal: 10 milliseconds. Amplitude modulated signal: 1 millisecond. Carrier frequency: 1kHz when modulated.
Page 225: Irig E Output
APPENDIX C.F. Element # Digit # Function Space Space Space Space Space Space Space Space Space 5.3.4 IRIG E Output The IRIG E code contains the Binary Coded Decimal (BCD) time of year and Control Functions. The figure IRIG E Time Code Description illustrates the IRIG E data structure. The BCD time of year provides the day of year, 1-366, and time of day to tens of seconds.
Page 226 APPENDIX the Control Function field to encode year data, time synchronization status, and SBS time data. Table B-2 lists the Control Function Field and each element's function. Element 55 is the time synchronization status bit. Element 55 is a Binary 1 when the front panel time synchronization lamp is green, and a Binary 0 when the lamp is red.
Page 227 APPENDIX Figure 5-2: IRIG E time code description Additional information The beginning of each 10 second time frame is identified by two consecutive 80 ms elements and P ). The leading edge of the second 80 ms element (P ) is the "on time"...
Page 228 APPENDIX Table 5-6: IRIG E control function field BIT No. CF ELEMENT No. FUNCTION SPACE SPACE SPACE SPACE SPACE TIME SYNC_STATUS SPACE SPACE SPACE PID P6 POSITION IDENTIFIER YEAR UNITS Y1 YEAR UNITS Y2 YEAR UNITS Y4 YEAR UNITS Y8 SPACE YEAR TENS Y10 YEAR TENS Y20...
Page 229: Irig Output Accuracy Specifications
SBS 214 SBS 215 SBS 216 SPACE PID P0 POSITION IDENTIFIER 5.3.5 IRIG Output Accuracy Specifications The IRIG outputs of the Spectracom Option Cards 1204-15, -1E, -22, and 1204-05, -27 deliver signals with the following 1PPS accuracy: VelaSync User's Manual...
Page 230: Choosing A Gnss Antenna Location
APPENDIX IRIC DCLS Measured Signal Category Accuracy IRIG A 30 ns IRIG B 30 ns IRIG G 30 ns IRIG NASA 30 ns IRIG E 30 ns IRIG AM Measured Signal Category Accuracy IRIG A 200 ns IRIG B 800 ns IRIG G 200 ns IRIG NASA...
Page 231 The GNSS antenna must be mounted such that the antenna points to the sky, i.e. the connector side pointing down. Note: Spectracom recommends applying an appropriate silicon grease to the cable connection at the GNSS antenna in order to protect the connection from VelaSync User's Manual...
Page 232: Maintenance And Service
5.6 Product Registration Spectracom recommends that you register your VelaSync so as to allow our Customer Service and Technical Support to notify you of important software updates, or send you service bul- letins, if required.
Page 233: Links To External Information
APPENDIX 5.7 Links to External Information To learn more about the following hardware - related subjects, see the Server OEM User's https://www.supermicro.com/manuals/superserver/1U/MNL-1771.pdf Manual at System safety Server setup Rack mounting System Interface Motherboard Chassis System fans Hard disks Power supplies Advanced setup BIOS setup BIOS error beep codes...
Page 234: Technical Support
To request technical support for your VelaSync unit, please go to the of the Spectracom Corporate website, where you can not only submit a support request, but also find additional technical documentation. Phone support is available during regular office hours under the telephone numbers listed below.
Page 235: Return Shipments
Freight to Spectracom is to be prepaid by the customer. Note: Should there be a need to return equipment to Spectracom, it must be shipped in its original packing material. Save all packaging material for this pur- pose. 5.10 License Notices 5.10.1 ...
Page 236 APPENDIX Copyright (c) Network Time Foundation 2011-2015 All Rights Reserved Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of con- ditions and the following disclaimer.
Page 237 APPENDIX Jean-Francois Boudreault <Jean-Francois.Boudreault(at)viagenie.qc.ca> IPv6 support Reg Clemens <reg(at)dwf.com> Oncore driver (Current maintainer) Steve Clift <clift(at)ml.csiro.au> OMEGA clock driver Casey Crellin <casey(at)csc.co.za> vxWorks (Tornado) port and help with target con- figuration Sven Dietrich <sven_dietrich(at)trimble.com> Palisade reference clock driver, NT adj. residuals, integrated Greg's Winnt port.
Page 238 APPENDIX Louis A. Mamakos <louie(at)ni.umd.edu> MD5-based authentication Lars H. Mathiesen <thorinn(at)diku.dk> adaptation of foundation code for Version 3 as specified in RFC-1305 Danny Mayer <mayer(at)ntp.org>Network I/O, Windows Port, Code Maintenance David L. Mills <mills(at)udel.edu> Version 4 foundation, precision kernel; clock drivers: 1, 3, 4, 6, 7, 11, 13, 18, 19, 22, 36 ...
Page 239 APPENDIX Paul A Vixie <vixie(at)vix.com> TrueTime GPS driver, generic TrueTime clock driver Ulrich Windl <Ulrich.Windl(at)rz.uni-regensburg.de> corrected and validated HTML doc- uments according to the HTML DTD 5.10.2 OpenSSH This file is part of the OpenSSH software. The licences which components of this software fall under are as follows. First, we will summarize and say that all components are under a BSD licence, or a licence more free than that.
Page 240 APPENDIX NO WARRANTY BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Page 241 APPENDIX CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Page 242 APPENDIX PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Page 243 APPENDIX This product includes cryptographic software written by Eric Young (eay (at)cryptsoft.com). This product tjh(at)cryptsoft.com includes software written by Tim Hudson ( Original SSLeay License ----------------------- eay(at)cryptsoft.com /* Copyright (C) 1995-1998 Eric Young ( ) All rights reserved. This package is an SSL implementation written by Eric Young (eay(at)cryptsoft.com). The implementation was written so as to conform with Netscapes SSL.
Page 244 APPENDIX Copyright 1996, 1998-2000 The Regents of the University of California All Rights Reserved Permission to use, copy, modify and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appears in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of CMU and The Regents of the University of California not be used in advertising or publicity pertaining to dis- tribution of the software without specific written permission.
Page 245 APPENDIX THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;...
Page 246: List Of Tables
5.11 List of Tables Table 1-1: Oscillator accuracies Table 1-2: 1 PPS output accuracy Table 1-3: Spectracom safety symbols Table 2-1: Subnet mask values Table 2-2: Adapter pinout, timing connector Table 2-3: Pinout, basic breakout cable (unspecified pins in the table are not connected) Table 2-4: Pinout, premium breakout cable (unspecified pins are not connected in the...
Page 247: List Of Images
Figure 4-3: Removing a HDD carrier Figure 4-4: Login banner (example) Figure 5-1: IRIG B time code description Figure 5-2: IRIG E time code description 5.13 Document Revision History Description Date First-generation PRISMA VelaSync manual. May 2018 VelaSync User's Manual...
Page 248 BLANK PAGE. VelaSync User's Manual...
Page 249 CLI Alarm threshold, GPS Notification Command-line interpreter Alarm Compliance Ancillary kit contact, Spectracom Antenna, GPS Antenna, GPS, location Assisted GPS Authentication Daylight Savings Time Authorized keys file ...
Page 250 INDEX ETE IRIG Carrier Frequencies Ethernet configuration Ethernet connection Keys, host Fans, system Leap second 85, Filter, cleaning LEDs Front panel Local clock Local System Input Reference Location, server installation GNSS receiver modes ...
Page 251 INDEX Setup screen Registration, product stratum Regulatory compliance Symmetric Keys Relocating, GNSS receiver time stamp Resetting GNSS receiver position timescale RF connector NTP Peer Preference RINEX Server Rinex/Yuma files Offset, GNSS receiver ...
Page 252 INDEX Subnet mask values Subnet, default Summer Time Survey, GNSS 121, 124, Symmetric keys Synchronizing Windows computers System interface System specifications System Time 70, Technical support Temperature 147, Terminal emulator TFOM ...

Spectracom PRISMA VelaSync User Manual

CHAPTER 1 Introduction & Overview

CHAPTER 2 Installation & Setup

CHAPTER 3 Managing Time

CHAPTER 4 System Administration

Appendix

Quick Links

Troubleshooting

Need help?

Questions and answers

Related Manuals for Spectracom PRISMA VelaSync

Summary of Contents for Spectracom PRISMA VelaSync

Table of Contents