Spectracom VelaSync 1232 User Manual

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Spectracom Part No.: 1232-5000-0050

VelaSync

User Manual

Revision: 3

Date: 26-Oct-2018

spectracom.com

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Troubleshooting

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Summary of Contents for Spectracom VelaSync 1232

Page 1 VelaSync User Manual Spectracom Part No.: 1232-5000-0050 Revision: 3 Date: 26-Oct-2018 spectracom.com...
Page 2 ...
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 3.2.3.3 Leap Second Correction Sequence 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"...
Page 9 4.3 Hardware Tasks 4.3.1 Replacing a Power Supply 4.3.2 Removing/Installing a Hard Disk Drive 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...
Page 10 4.7.2.2 The Logs Screen 4.7.2.3 Displaying Individual Logs 4.7.2.4 Saving and Downloading Logs 4.7.2.5 Setting up a Remote Log Server 4.7.2.6 Clearing All Logs 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 –...
Page 11 5.8 Technical Support 5.8.1 Regional Contact 5.9 Return Shipments 5.10 License Notices 5.10.1 NTPv4.2.6p5 5.10.2 OpenSSH 5.10.3 OpenSSL 5.11 List of Tables 5.12 List of Images 5.13 Document Revision History INDEX VelaSync User's Manual • TABLE OF CONTENTS...
Page 12 BLANK PAGE. VelaSync User's Manual • TABLE OF CONTENTS...
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 1 •...
Page 14: Product Overview
VelaSync 1232 (part number 1232-xxxx-xxxx) is the latest version of this unit. For the user manual for an original VelaSync 1225 (part number 1225-xxxx-xxxx) see VelaSync User's Manual archived on the Spectacom website.
Page 15 This User Manual is written for a professional audience, targeting experienced system integrators and PC technicians. Other relevant documentation Note: VelaSync 1232, is the latest version of this unit. For the user VelaSync User's Manual manual for an original VelaSync 1225, see the part number 1225-5000-0050, archived on the Spectacom website.
Page 16: Designated Use Of This Product
The document appendix includes "Troubleshooting" on page 208, as well as admin- istrative information, how to contact Spectracom Support, and license notices. 1.3 Designated Use of this Product This product has been designed and built in accordance with state-of-the-art standards and the recognized safety rules.
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 50 ns 25 ns GPS) 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 OCXO (Rugged TCXO OCXO Option, cPCI & VPX only) Holdover (constant temp after 2 weeks of GNSS lock) After 4 hours 12 μs 3 μs 1 μs After 24 hours 100 μs 25 μs μs 10 MHz Output 10 MHz sine wave output from oscillator Output impedance: 50 Ω...
Page 21: Communication Ports
1.4 Technical Specifications Amplitude: TTL compatible, 4.3 V , base-to-peak into 50 Ω [PCIe only: 2.2 V minimum, base-top-peak into high impedance] Pulse width: 50 ns to 999 ms active pulse width, in 20 ns increments Period: 100 ns min, 60 s max, in 20 ns increments Polarity (selectable): Positive or negative Time-Match/Alarm Output Amplitude: TTL compatible, 4.3 V minimum, base-to-peak into 50 Ω;...
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...
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. LED: When blinking, the drive is rebuilding.
Page 24: Rear Panel Overview
1.6 Rear Panel Overview 1.6 Rear Panel Overview Figure 1-3: VelaSync rear panel Legend: 1./2.: 1GbE ports (RJ-45) 3./4.: 10 GbE ports (SFP+) 5./6.: Optional 10 GbE ports (SFP+), or 40 GbE (QSFP+) 7.: GPS/GNSS antenna connector (SMB) 8.: VGA 9.: Spectacom TSync timing connector Includes rear status LED's...
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 documentation) 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 system logs. HELP: Provides Spectracom Service Contact Information and high-level system configurations you may be required to furnish when contacting Spectracom Ser- vice. 1.7.2 The INTERFACES Menu...
Page 27: The Configuration Management Menu
1.7 The VelaSync Web UI The headings of each of the INTERFACES drop-down menus (white on orange) open overview status screens for the respective menu items. 1.7.3 The Configuration MANAGEMENT Menu MANAGEMENT menu on the Web UI's Main screen provides access to VelaSync's configuration screens and settings.
Page 28 1.7 The VelaSync Web UI CHAPTER 1 • VelaSync User's Manual Rev. 3...
Page 29: Your Safety
Additional Safety Notes pertaining to hardware installation can be found under "Rack Mounting: SAFETY" on page 25. 1.8.1 SAFETY: Symbols Used Note: The following symbols may be found in Spectracom technical documentation, or on Spectracom products: Table 1-3: Spectracom safety symbols Symbol Signal word Definition...
Page 30: Safety Advisories
Do not use power supplies other than the p/s model installed in your 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). CHAPTER 1 • VelaSync User's Manual Rev. 3...
Page 31 Also check for loose or scorched cables on other nearby equipment. Do not modify the equipment. Use only spare parts authorized by Spectracom. SAFETY: Hands-On Advice Before working with or on the equipment, familiarize yourself with the location of...
Page 32: Regulatory Compliance
Disconnect the supply voltage from the unit. 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 240). DANGER! —...
Page 33 1.9 Regulatory Compliance These limits are designed to provide reasonable protection against harmful inter- ference when the equipment is operated in a commercial environment. This equip- ment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the user documentation, may cause harmful interference to radio communications.
Page 34 1.9 Regulatory Compliance BLANK PAGE. CHAPTER 1 • VelaSync User's Manual Rev. 3...
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
Two (2) rail mounting brackets, extension elements, and mounting hardware Front bezel, and keys Two (2) power cables Spectracom Ancillary Kit, containing one (1) antenna cable, one (1) TSync standard breakout cable, and one (1) timing I/O adaptor cable. Optional equipment e.g., GPS antenna and surge suppressor Documentation: VelaSync Quickstart Guide, Supermicro documentation, Mel- lanox documentation.
Page 37: Rack Mounting: Safety
2.3 Rack Mounting: SAFETY Select a suitable location that meets the following requirements: A dedicated room with restricted access Electrically grounded mechanically stable rack, with physical clearance for unrestricted 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...
Page 38: Rack Installation
2.4 Rack Installation 2.4 Rack Installation Note: We recommend that you read this Chapter in its entirety before you begin with the 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 sections: inner...
Page 39 2.4 Rack Installation Figure 2-2: Optional inner rails Installing the outer rail to the rack: 1. 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 the rear side of each outer rail.
Page 40: Telco Rack Installation
2.4 Rack Installation both sides. Depress the locking tabs, if needed (they will click upon proper engage- ment). 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.
Page 41: Basic Connections Setup
2.5 Basic Connections Setup 2.5 Basic Connections Setup This section is designed to take your through the initial setup steps in order to allow you to communicate with and configure your VelaSync. Figure 2-4: VelaSync rear panel 2.5.1 ...
Page 42: Establishing A Network Connection
2.5 Basic Connections Setup DANGER! This product relies on the building's installation for short-cir- cuit (overcurrent) protection. Ensure that the protective device is rated not greater than: 250 V, 20 A. 2. Plug in power to both power supplies (items 13 & 14 "Basic Connections Setup"...
Page 43: Accessing The Web Ui
2.6 Accessing the Web UI ETH0, using the default static IP address (see step 6), ETH1-ETH5, using a DHCP network (see step 7), via the serial port (see "Setting Up an IP Address via the Serial Port" on page 33). 6. The unit is shipped with one static IP address: ETH0 = 192.168.1.1.
Page 44: Configuring Ip Address(Es)
For security reasons, please change the default password immediately; see: "Managing Passwords" on page 180. 2. Upon initial login, you will be asked to register your product. Spectracom recom- mends to register VelaSync, so as to receive software updates and services notices. You can also register...
Page 45: Setting Up An Ip Address Via The Serial Port
2.7 Configuring IP Address(es) 6. In this panel, you can perform the following actions: enable or disable the ethernet port enable DHCP 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.
Page 46 2.7 Configuring IP Address(es) DB9M serial cable. The VelaSync serial port operates at 9600 baud, 8 data bits, no par- ity, 1 stop bit. The serial port can be used to make configuration changes (such as the network set- tings), retrieve operational data (e.g., GNSS receiver information) and log files, or to per- form operations such as resetting the admin password.
Page 47: Subnet Mask Values
2.8 Advanced Timing Connections 2.7.3 Subnet Mask Values Table 2-1: Subnet mask values Network Bits Equivalent Netmask Network Bits Equivalent Netmask 255.255.255.252 255.255.192.0 255.255.255.248 255.255.128.0 255.255.255.240 255.255.0.0 255.255.255.224 255.254.0.0 255.255.255.192 255.252.0.0 255.255.255.128 255.248.0.0 255.255.255.0 255.240.0.0 255.255.254.0 255.224.0.0 255.255.252.0 255.192.0.0 255.255.248.0 255.128.0.0...
Page 48: Timing Interface Adapter Cable
2.8 Advanced Timing Connections 2.8.1.1 Timing Interface Adapter Cable VelaSync is shipped with a 15 cm (6") adapter cable that is used to connect the micro 25-pin timing interface connector on the card to the breakout cable: Figure 2-7: Adapter cable Table 2-2: ...
Page 49: Basic Breakout Cable
2.8 Advanced Timing Connections END "A" END "B" PIN-13 PIN-13 PIN-14 PIN-14 PIN-15 PIN-15 PIN-16 PIN-16 PIN-17 PIN-17 PIN-18 PIN-18 PIN-19 PIN-19 PIN-20 PIN-20 PIN-21 PIN-21 PIN-22 PIN-22 PIN-23 PIN-23 PIN-24 PIN-24 PIN-25 PIN-25 NO CONNECT PIN-26 SHIELD 2.8.1.2 Basic Breakout Cable The basic breakout cable breaks out a subset of features from the 26-pin timing con- nector to separate BNC and DB-9 connectors for use.
Page 50 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 con- nected) Signal Signal P1—Timing Connector GPIO Output 0 IRIG AM Input – Ground GPIO Output 1- Reserved GPIO Input 0 Ground...
Page 51: Premium Breakout Cable
2.8.1.3 Premium Breakout Cable Note: The premium breakout cable must be purchased separately. Contact Spectracom for details. The premium breakout cable breaks out all features from the timing connector to sep- arate BNC and DB-9 connectors for use. See table below for details.
Page 52 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 53 2.8 Advanced Timing Connections Signal Signal IRIG DCLS I/O (DB-9 Female) Ground IRIG DCLS Output + Ground IRIG DCLS Output – IRIG DCLS Input + Ground IRIG DCLS Input - P3—10MHz Output (BNC Female) 10 MHz Output Ground P4—1PPS Output (BNC Female) 1PPS Output Ground P5—IRIG AM Input (BNC Female)
Page 54: Status Leds
2.8 Advanced Timing Connections 2.8.2 Status LEDs 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. Table 2-5: ...
Page 55: Configuring Network Settings
2.9 Configuring Network Settings Color/FUNCTION State green yellow /SYNC /HOLDOVER /ALARM Synchronized Holdover No Longer Synchronized Free Run Blink Blink Fault Code Code Code Fault state is indicated by the blinking code. It blinks the number of times indicated below, with a 2-second pause between each set.
Page 56 2.9 Configuring Network Settings Actions panel provides: General Settings: Allows quick access to the primary network settings necessary to connect VelaSync to a network. See "General Network Set- tings" on the facing page. Web Interface Settings: Web interface timeout: Determines how long a user can stay logged on.
Page 57: General Network Settings
2.9 Configuring Network Settings 2.9.1 General Network Settings To expedite network setup, VelaSync provides the General Settings window, allowing quick access to the primary network settings. To access the General Settings window: 1. Navigate to MANAGEMENT > Network Setup.
Page 58: Network Ports
2.9 Configuring Network Settings 2.9.2 Network Ports Ports act as communication endpoints in a network. The hardware configuration of your unit will determine which ports (e.g., Eth0, Eth1, ...) are available for use. Before using a port, it needs to be enabled and configured. To enable &...
Page 59 2.9 Configuring Network Settings Static IPv4 Address: This is the unique address assigned by the network administrator. Table 2-8: Default IP addresses Default "static lease" ETH port IP address ETH0 192.168.1.1 ETH1 defaults to DHCP ETH2 defaults to DHCP ETH3 defaults to DHCP The default subnet is: 255.255.0.0...
Page 60: Network Services
2.9 Configuring Network Settings 2.9.3 Network Services Several standard network services can be enabled or disabled via the easily accessible Network Services Panel under MANAGEMENT > Network Setup: Network Services panel has ON/OFF toggle switches for the following daemons and features: SSH: Secure Shell cryptographic network protocol for secure data com- munication...
Page 61 2.9 Configuring Network Settings 1. Navigate to the MANAGEMENT > Network Setup screen. 2. In the Actions panel on the left, click on Access Control. 3. The Network Access Rules window displays: 4. In the Allow From field, enter a valid IP address.
Page 62: Ipmi Configuration
2.9 Configuring Network Settings 2.9.5 IPMI Configuration The Intelligent Platform Management Interface (IPMI) is a protocol that allows for out- of-band management of computer systems, even when they are turned off. IPMI is act- ive whenever the server is connected to power. VelaSync has a dedicated IPMI Ethernet interface (see rear panel illlustration, item no. 11 under "Rear Panel Overview"...
Page 63 2.9 Configuring Network Settings 1. Navigate to MANAGEMENT > NETWORK: SSH Setup. The SSH Setup window will display. The window contains two tabs: Host Keys: SSH uses Host Keys to uniquely identify each SSH server. Host keys are used for server authentication and identification. Public Key: This is a text field interface that allows the user to edit the pub- lic key files authorized_keys file.
Page 64 2.9 Configuring Network Settings default key bit length size used is 2048. A key with a zero length or blank key size field is not created. The SSH client utilities SSH, SCP, and SFTP allow for several modes of user authen- tication.
Page 65 2.9 Configuring Network Settings Note: Changing the values and submitting them in this manner DOES NOT generate new host public/private key pairs. See "Creating Host Public/Private Key Pairs" below for information on how to create new host public/private key pairs. Deleting Host Keys You can delete individual host keys.
Page 66 2.9 Configuring Network Settings Note: If a key size is undefined, the default key bit length size used is 2048. A key with a zero length or blank key size field will not be created. When you delete a host key and recreate a new one, SSH client sessions will warn you that the host key has changed for this particular IP address.
Page 67 You are now presented with boot up text and/or a “>” prompt which allows the use of the Spectracom command line interface. Creating an SSH session using Public Key with Passphrase Authentication for the admin account...
Page 68 2.9 Configuring Network Settings 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. ssh -i ./id_rsa spadmin@10.10.200.5 Enter passphrase for key './id_rsa': mysecretpassphrase Please consult the SSH client tool’s documentation for specifics on how to use the tool,...
Page 69: Snmp
You will be presented with the SFTP prompt allowing interactive file transfer and dir- ectory navigation. 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.
Page 70 2.9 Configuring Network Settings To access the SNMP Setup screen: Navigate to MANAGEMENT > NETWORK: SNMP Setup. The SNMP screen will display: SNMP screen is divided into 3 panels: 1. The Main panel, which is subdivided into 3 displays: SNMP V1/V2 : This panel allows configuration of SNMP v1 and v2c communities (used to restrict or allow access to SNMP).
Page 71 2.9 Configuring Network Settings 2. The Actions panel , which contains the Restore Default SNMP Con- figuration button. 3. The SNMP Status panel, which offers: SNMP ON/OFF switch. Authentication Error Trap ON/OFF switch. SysObjID— The System Object ID number. This is editable in the SNMP Status panel (see "Configuring the SNMP Status"...
Page 72 To obtain the MIB files from VelaSync via FTP/SFTP: 1. Using an FTP program, log in as an administrator. 2. Through the FTP program, locate the Spectracom MIB files in the /home/spec- tracom/mibs directory. 3. FTP the files to the desired location on your PC for later transfer to the SNMP Manager.
Page 73: Snmp V1/V2C
These MIB files may also be compiled into your SNMP manager, if they are not already present. Spectracom’s private enterprise MIB files can be requested and obtained from Spectracom Customer...
Page 74 2.9 Configuring Network Settings 4. Enter the required information in the fields provided: IP Version field provides a choice of IPv4, IPV6 or both IPv4 and IPv6 (= default). The choices offered below will change in context with the choice made in IP Version field.
Page 75: Snmp V3
2.9 Configuring Network Settings 2. Click the row of the SNMP V1/V2 panel that displays the community you wish to edit or delete. The cursor will change from an arrow icon to a pointing finger to indicate that the entry is clickable. ...
Page 76 2.9 Configuring Network Settings 4. Enter the required information in the fields provided. SNMP User Names and passwords are independent of users that are con- figured on the Tools/Users page. User names are arbitrary. SNMP User Names should be between 1 and 31 characters in length.
Page 77: Snmp Traps
2.9 Configuring Network Settings 4. Apply your changes and click Submit. OR: Click Delete to remove the User. 2.9.7.3 SNMP Traps SNMP traps allow for automatic event notification, and as such are one way to remotely monitor VelaSync's status. SNMP traps indicate the status change that caused the trap to be sent and may also include one or more objects, referred to as variable-bindings, or varbinds.
Page 78 2.9 Configuring Network Settings 4. Enter the required information in the fields provided. (Note that the options will vary contextually according to your Version.) 5. Version field provides a choice between v1, v2c, and [= default] Community field for the SNMP Community string. [v1, v2c] SNMP User...
Page 79: Vlan Support
18837 by the IANA (Internet Assigned Numbers Authority). Spec- tracom’s product 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 60.
Page 80: Configuring Ntp
2.10 Configuring NTP 3. Select the parent interface [eth0-eth5], type in your VLAN ID, and click submit. Repeat the process as necessary. Your new VLAN interfaces will now be displayed in the VLAN Setup panel, listed as eth [#].[VLAN ID]. 2.10 ...
Page 81: Checklist Ntp Configuration
2.10 Configuring NTP shareware NTP clients are available on the Internet. The software running on the PC determines whether NTP or SNTP is used. When the NTP service is enabled, VelaSync will “listen” for NTP request messages from NTP clients on the network. When an NTP request packet is received, VelaSync will send an NTP response time packet to the requesting client.
Page 82 2.10 Configuring NTP The NTP Servers and Peers panels … are located on the right-hand side of the screen: 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 ref- erences.
Page 83 2.10 Configuring NTP 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. (See also "Viewing NTP Clients" on the next page.) Information for each client includes: Client IP Received Packets Mode...
Page 84: Dis-/Enabling Ntp
2.10 Configuring NTP 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 85: 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, Pre- vious,...
Page 86 2.10 Configuring NTP cale. The options are UTC, TAI and GPS. Typically, UTC is used for network syn- chronization. Note that the System Time affects not only NTP output, but also all other aspects of time management e.g., time distributed via channels other than NTP, logging, and time displayed in the Web UI.
Page 87: Ntp Reference Configuration
2.10 Configuring NTP Note: When the Timescale is set to “GPS”, the GPS to UTC Offset must be set correctly. As of 26-Oct-2018, the offset between UTC and GPS is 18 seconds. 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.
Page 88: The Ntp Servers And Ntp Peers Panels
2.10 Configuring NTP It will remain in Holdover mode until any enabled and valid input reference becomes avail- able again, or until the Holdover period expires, whichever occurs first. During Holdover mode, NTP will remain at the same Stratum level it was before enter- ing the Holdover mode and can continue to be the reference to the network.
Page 89: Ntp Servers: Adding, Configuring, Removing
2.10 Configuring NTP Note: Servers will be displayed in the Status view only if they can be resolved. They will, however, always be displayed in the Setup view in order to reconfigure them, if necessary. IP/HOST: Name and real-time status (color-coded) ID: Identifies the type of Input REFerence e.g., indicates the reference can use GPS for its synchronization.
Page 90 2.10 Configuring NTP 1. Navigate to MANAGEMENT > NETWORK: NTP Setup. 2. The NTP Setup screen appears. The NTP Servers panel displays a list of recog- nized NTP servers. Click the GEAR icon in the upper right-hand corner of the Servers panel.
Page 91: Ntp Peers: Adding, Configuring, Removing
2.10 Configuring NTP 4. The NTP Server Edit window displays. Enter the required information: Host: The IP address for the server to be used as host. Min Poll Interval: Select a value from the drop down (the default is 3 (8s)). Max Poll Interval: Select a value from the drop down (the default is 3 (8s)).
Page 92 2.10 Configuring NTP a new NTP Peer, click the PLUS icon in the top right corner of the NTP Peers panel. REMOVE an NTP Peer (and its associated configurations), click the X- button next to it. 3. The NTP Peers edit window opens: ...
Page 93: Ntp Authentication
2.10 Configuring NTP Note: Please note that it is not advisable to mark more than one NTP Peer as Preferred, even though VelaSync will not prevent you from doing so. 5. Click Submit, or press Enter. 2.10.9 NTP Authentication Since NTP information is distributed across entire networks, NTP poses a security risk: Falsified NTP time stamps or other NTP-related information can be exploited by an attacker.
Page 94 2.10 Configuring NTP CREATE Symmetric Key, click the PLUS icon in the top-right corner, and proceed to Step 4. EDIT an existing key pair, click the corresponding Change button, and proceed to Step 4. DELETE a key pair, click the corresponding Delete button, and click in the dialog box to confirm and complete the procedure.
Page 95 2.10 Configuring NTP MD5 (the default) SHA1 MDC2 MDC2 RIPEMD160 Str—The key string must be readable ASCII and between 1 and 16 characters long. 5. Click the Submit button: The changes will be reflected in the table of the Symmetric Keys window, which is displayed after clicking the Submit...
Page 96: Ntp Access Restrictions
2.10 Configuring NTP NOTES: Duplicate key IDs are not permitted. NTP requests received by that do not contain an authenticator 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 97 2.10 Configuring NTP 3. 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 confirm by clicking OK.
Page 98: Spectracom Technical Support For Ntp
NTP queries into VelaSync services. 5. Click the Submit button. 2.10.11 Spectracom Technical Support for NTP Spectracom does not provide technical assistance for configuring and installing NTP on www.ntp.org Unix-based applications. Please refer to for NTP information and FAQs. Another...
Page 99: The Ptp Screen
2.11 Configuring PTP 2.11.1 The PTP Screen The PTP screen provides PTP status information, and provides access to all configurable PTP settings. To access the PTP screen, navigate to MANAGEMENT > NETWORK: PTP Setup. The PTP screen will open: Figure 2-10: ...
Page 100 2.11 Configuring PTP Settings changed by the user will be maintained when the PTP daemon is stopped and started, and between reboots and powercycles. Figure 2-11: Edit PTP Settings panel Protocol tab 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...
Page 101 2.11 Configuring PTP --------------------------------------------- The Unicast mode is activated at the initiative of the Slaves. Each Slave, which wants to run in Unicast mode, shall first negotiate Unicast contracts with the Master. Sync Rate: The rate at which Sync messages are sent, in packets per second. [1 = 1 packet/sec.;...
Page 102: The Ptp Statistics Panel
2.11 Configuring PTP 2.11.1.2 The PTP Statistics Panel This panel provides statistics for each Ethernet port. If the PTP is set to OFF for a spe- cific port, this screen will not display any information. All statistics shown are based on the traffic that is detectable by VelaSync, i.e. in a Unicast environment, VelaSync may only detect traffic that is addressed to it, based on switch configuration.
Page 103: Configuration - General Steps
2.11 Configuring PTP 2.11.3 Configuration — General Steps Ensure that the Ethernet port used for PTP is connected to the network. Nav- igate to MANAGEMENT > NETWORK: Network Setup, and verify the STATUS in Ports panel. Be sure that valid time and 1PPS references are currently selected: Navigate to MANAGEMENT >...
Page 104 2.11 Configuring PTP BLANK PAGE. CHAPTER 2 • VelaSync User's Manual Rev. 3...
Page 105: 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 ref- erence configuration, as well as distribution of time and fre- quency. The following topics are included in this Chapter: 3.1 The Time Management Screen 3.2 System Time 3.3 Managing References...
Page 106: The Time Management Screen
3.1 The Time Management Screen 3.1 The Time Management Screen Time Management screen is the point of entry for all System Time-related set- tings that are user-configurable. To access the Time Management screen: 1. Navigate to MANAGEMENT > OTHER: Time Management.
Page 107: System Time
3.2 System Time applied to VelaSync’s time keeping. It is also possible to enter the exact day and time when the leap second is to be applied, and to delete a leap second. See also: "Leap Seconds" on page 104 Local Clocks panel You can create multiple different Local Clocks, as needed.
Page 108: System Time
3.2 System Time Figure 3-1: How the System Time is derived Note: User hand-set times can only be set in UTC (not Local time). 3.2.1 System Time Several System Time parameters can be customized: System Timescale can be changed. user-defined time can be setup for e.g., for simulation purposes, or if no external reference is available.
Page 109: Timescales
3.2 System Time UTC: Coordinated Universal Time (Temps Universel Coordonné); your local time zone determines the difference between UTC and local time. Note that UTC is not a time zone, but a time standard, i.e. it is not used anywhere in the world as the official local time, whereas GMT (Greenwich Mean Time) is a time zone that is used in several European and African countries as the official local time.
Page 110 3.2 System Time Note: timescale also does not observe leap seconds. The TAI timescale is fixed to always be 19 seconds ahead of GPS time. As of 26-Oct-2018 TAI time is 37 seconds ahead of UTC. VelaSync's System timescale is configured via the MANAGEMENT >...
Page 111: Manually Setting The Time
3.2 System Time Other VelaSync outputs will be provided in the same timescale that is selected in the System timescale field. The NTP output for network synchronization and the time stamps included in all log entries will be in the same timescale as the configured System timescale.
Page 112 3.2 System Time The time in the System Time field will default to the current date and time. To set the time, use the sliders. The time will display between the calendar and the sliders, and also next to the chosen date in the field directly above the calendar.
Page 113: Using Battery Backed Time On Startup
3.2 System Time iii. In the Oscillator Settings window, set the Holdover Timeout.) 9. Check on the HOME screen that User 0 is displayed, with a green STATUS. Note that the Disciplining State will remain yellow, once Holdover has expired, since the system time is not synchronized to a reference.
Page 114 3.2 System Time the system needs to be able to completely recover from a temporary power loss, or similar, without human intervention. c. A system is used for simulation or testing purposes, and UTC traceability is not required. The Accuracy of the Battery Backed Time … …...
Page 115: Timescale Offset(S)
3.2 System Time 4. Click the Submit button. 3.2.2 Timescale Offset(s) Timescale offsets account for fixed differences between timescales, in seconds. Times- cale offsets may change because of leap seconds, see "Leap Seconds" on the next page. 3.2.2.1 Configuring a Timescale Offset To configure a timescale offset to the System Time: ...
Page 116: Leap Seconds
3.2 System Time 3.2.3 Leap Seconds 3.2.3.1 Reasons for a Leap Second Correction A Leap Second is an intercalary one-second adjustment that keeps broadcast stand- ards for time of day close to mean solar time. Leap Seconds are required to synchronize time standards with civil calendars, thus keeping UTC time in sync with the earth’s rota- tion.
Page 117: Leap Second Alert Notification
3.2 System Time automatically correct for the Leap Second (unless the System Time’s timescale is configured as either GPS or TAI). 3.2.3.2 Leap Second Alert Notification VelaSync will announce a pending Leap Second adjustment by the following methods: ASCII Data Formats 2 and 7 (among other formats) from the ASCII Data option modules contain a Leap Second indicator.
Page 118: Configuring A Leap Second
3.2 System Time B. Sequence of seconds output when subtracting a second ("negative Leap Second"): 56, 57, 0, 1, 2, 3, 4 … 3.2.3.4 Configuring a Leap Second To manually correct the System Time for a leap second: ...
Page 119: 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 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 120 3.2 System Time Note: Acceptable characters for the name include: A-Z, a-z, 0-9, (-+_) and space. 5. 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.
Page 121: Dst Examples
3.2 System Time of March and the “DST out” date is the first Sunday of November). Australia. Note: If a pre- configured rule DST rule happens to be changed in the future (like the change to the US DST rule in 2006), this option allows the DST rules to be edited without the need to perform a software upgrade for a new DST rule to be defined.
Page 122: Dst And Utc, Gmt
3.2 System Time Submit 5. Review the changes made and click the button. The unit will display the status of the change. E x a m p l e 2 : To create a Local Clock for a VelaSync installed in the Eastern Time Zone of the US, and desiring the Local Clock to automatically adjust for DST (using the post 2006 DST rules for the US).
Page 123: Managing References
3.3 Managing References 3.3 Managing References 3.3.1 Input Reference Priorities VelaSync can be synchronized to different time and frequency sources that are referred to as Input References, or just References. References can be a GNSS receiver, or other sources delivered into your VelaSync unit via dedicated (mostly optional) inputs.
Page 124: Configuring Input Reference Priorities
3.3 Managing References Table 3-1: Reference priority titles Title Reference ASCII Timecode ASCII serial timecode input External 1PPS input External 1PPS input Frequency External Frequency input GNSS GNSS input PTP input IRIG IRIG timecode input Local System Built-in clock OR internal 1PPS generation NTP input User Host (time is manually set by the user)
Page 125 3.3 Managing References Accessing the Reference Priority Screen To access the Reference Priority Setup screen: 1. Navigate to MANAGEMENT > OTHER: Reference Priority. 1. On the HOME screen, click the GEAR icon in the Reference Status panel: 2. The Configure Reference Priorities screen will display.
Page 126 3.3 Managing References 2. Click the PLUS icon in the top right-hand corner of the Configure Reference Pri- orities table. 3. The Add Reference window will display: 4. In the Add Reference window, enter: Priority Level: Assign a priority to the new reference. Time: Select the time reference.
Page 127: The "Local System" Reference
3.3 Managing References 4. Click Submit. Resetting Reference Priorities to Factory Defaults To reset all references in the Reference Priority table to their factory default priorities: 1. Navigate to the Configure Reference Priorities screen via MANAGEMENT > OTHER: Reference Priority menu.
Page 128: The "User/User" Reference
3.3 Managing References When the Time reference is configured as Local System, VelaSync's System Time is considered a valid reference, as long as the external 1PPS input reference is valid. Vice versa, when the 1PPS reference is configured as Local System, VelaSync's built-in oscillator is considered a valid reference, as long as the external Time ref- erence is valid.
Page 129 3.3 Managing References Use cases for the "User/User" reference User/User reference is provided for the following use cases: a. No external references are available (yet), but you need a reference for testing or setup purposes. This may be the case e.g., while waiting for a GNSS antenna to be installed.
Page 130: Reference Priorities: Examples
3.3 Managing References 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). It then needs to be set manually and submitted again (Edit System Time >...
Page 131 3.3 Managing References 3. Move the reference which has “GPS 0” in the Time column and “GPS 0” in the 1PPS column to the top of the table, with a Priority value of 1. Click the Enabled checkbox. default Since both of these references are references, no additional references need to be added to the...
Page 132 3.3 Managing References Note: When selecting NTP as an input reference, do not select another reference (such as GNSS, IRIG, etc.) to work with NTP as a reference. NTP should always be selected as both the Time and 1PPS input when it is desired to use NTP as an input reference.
Page 133 3.3 Managing References Note: You will need to repeat this procedure each time VelaSync is power-cycled (with no other references available), unless you enabled the feature Synchronize to Battery Backed Time on Startup. Example 5—Time at power-up ("Local System Time") to be considered "Valid".
Page 134: Reference Qualification And Validation
3.3 Managing References 3.3.2 Reference Qualification and Validation 3.3.2.1 Reference Monitoring: Phase The quality of input references can be assessed by comparing their phase offsets against the current system reference, and against each other. This is called Reference Monitoring.
Page 135: The Gnss Reference
3.3 Managing References This Reference Phase Offset Data is plotted over time (abscissa) in the Reference Mon- itor panel in the center of the screen. Use the check boxes in the References panel to select the reference(s) for which you want to plot the phase offset data. Use the handles to zoom in on a time window.
Page 136: Reviewing The Gnss Reference Status
3.3 Managing References 1. Navigate to INTERFACES > REFERENCES: GNSS Note: Typically, there will be only one GNSS reference, numbered "0". 2. The GNSS 0 status window will open. To open the configuration window, click Edit in the bottom-left corner. ...
Page 137 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 subsequent GNSS topics. CHAPTER 3 • VelaSync User's Manual Rev. 3...
Page 138 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 1PPS signals: “On” (green) indicates a valid signal, “Off” (red) indicates that no valid signal is available. A yellow 1PPS light indicates that the monitored 1PPS value fell below a quality threshold and...
Page 139 3.3 Managing References Identified Satellite Signal Strengths: Bar graphs for all satellites detected. Color indicates signal strength. 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...
Page 140: Determining Your Gnss Receiver Model
GNSS Receiver: GNSS Receiver Models Spectracom strives to equip VelaSync with current technology. Depending on the pro- duction date of your VelaSync unit, one of the following GNSS receiver models will be installed in your unit (if any): CHAPTER 3 • VelaSync User's Manual Rev. 3...
Page 141: Selecting A Gnss Receiver Mode
3.3 Managing References ® u-blox 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 132.
Page 142 3.3 Managing References Receiver Mode function allows the GNSS receiver to operate in either a sta- tionary mode (“Standard” or “Single Satellite” modes), or in a mobile mode envir- onment e.g., in 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...
Page 143 3.3 Managing References vey, the GNSS receiver must continue to track at least four satellites, otherwise the GNSS survey will not complete. Upon completion of the GNSS survey the GNSS receiver will lock-in the calculated GNSS position and will enter Standard Mode.
Page 144: Setting Gnss Receiver Dynamics
3.3 Managing References Mobile Mode should only be selected if your VelaSync unit will NOT remain sta- tionary at all times, i.e. instead of being operated in a building, it is installed in a mobile platform (such as a vehicle, ship, plane, etc.). 3.3.3.4 ...
Page 145: Performing A Gnss Receiver Survey
3.3 Managing References Table 3-2: Receiver dynamics, ~modes, ~ dynamics, ~ types Receiver Dynamics Receiver Mode Land Stationary (Resurvey) (No Resurvey) Single Satellite irrelevant irrelevant irrelevant irrelevant Standard Mobile (with u-blox receivers) Notes: u-blox M8T receiver now uses Land to indicate it will RESURVEY on reboot, Stationary to indicate it will not resurvey after reboot.
Page 146: Gnss Receiver Offset
3.3 Managing References 1. Navigate to INTERFACES > REFERENCES: GNSS 2. The survey status (ACQUIRING, COMPLETE, or progress in percent) is displayed under the line item Survey Progress. Note: Once a survey has been initiated, the Survey Progress may not be displayed right away until the receiver has completed its initialization process.
Page 147: Resetting The Gnss Receiver
C = Constant derived from velocity of light: 1.016 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 approximately 1.2 nanoseconds of delay per every foot of cable.
Page 148: Deleting The Gnss Receiver Position
Resetting the GNSS receiver may become necessary in the rare event of internal communication issues, and is typically ONLY required if Spectracom Technical Support advises you to execute this command. Note that resetting the GNSS receiver is not the same as "Deleting the GNSS Receiver...
Page 149 3.3 Managing References Note: self survey will take at least 2000 seconds (33 minutes). Relocating VelaSync Delete Position command may need to be used if a VelaSync system is physically moved, and it did not self-initiate a new survey automatically. Note that neglecting to delete the old position data and discover the new position data will cause VelaSync not to go into synchronization state.
Page 150: Manually Setting The Gnss Position
3.3 Managing References 3.3.3.9 Manually Setting the GNSS Position Note: This topic applies only to stationary applications , i.e. to Stand- mode, or Single Satellite mode. The exact geographic position (location and elevation) of the antenna your VelaSync unit—and thus its onboard GNSS receiver—is a major factor for VelaSync to calculate an accurate System Time from the GNSS reference.
Page 151 3.3 Managing References 3. Under Manual Position Set accurately enter latitude, longitude (both in decimal degrees), and altitude (in meters [WGS 84]) of your GNSS antenna, VelaSync can use this data during the satellite tracking/adjustment process, which typically leads to a quicker "fix". It is recommended to enter the position as accurately as possible.
Page 152: Gnss Constellations
3.3 Managing References 5. Determine your altitude: To find the elevation of your location, search online for a Google Maps elevation finder tool. Do not forget to add the height above ground for your antenna. If a more exact altitude is desired, the use of a topographical map is recommended. WGS 84 Applying the standard will likely yield the most accurate elevation.
Page 153 3.3 Managing References 3. Under Selected Constellations, review which constellations are currently tracked, and apply your changes. Note the following: u-blox M8T receiver is capable of receiving multiple GNSS con- stellations simultaneously; the table below shows which combinations are possible: Galileo GLONASS...
Page 154 About QZSS QZSS is disabled by default. In order to receive QZSS signals, you must either be loc- ated in the Japan region, or use a GNSS simulator (such as Spectracom GSG-5 or -6 Ser- ies). 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 155: A-Gps
A-GNSS server A-GNSS server allows a VelaSync unit to operate as a server, thus providing A-GNSS ephemeris and almanac data to other client devices e.g., a Spectracom GSG-series GNSS simulator. Caution: Do NOT use GLONASS when operating VelaSync as an A- GNSS server, since this will likely crash the A-GNSS software.
Page 156 3.3 Managing References 1. Navigate to INTERFACES: REFERENCES > GNSS Reference. The GNSS screen will be displayed. 2. In the GNSS Reference panel on the right, click the GEAR button next to GNSS 0. 3. In the GNSS 0 window, locate the A-GPS panel at the bottom.
Page 157 3.3 Managing References Note: Once you click Submit, any parameters entered under Apply A- GPS Data will override the System time and position data. Exercise cau- tion when using this feature, since it could negatively impact the GNSS receiver operation. Use Current System Time Apply VelaSync's currently used System time to the GNSS receiver.
Page 158 3.3 Managing References option to select not just GPS, but also Galileo and/or BeiDou, thus allowing the col- lection of RINEX3 navigation files and almanac files for the GPS, Galileo and/or BeiDou constellations. At this time the GLONASS constellation is NOT supported. Caution: Do NOT use GLONASS when operating VelaSync as an A- GNSS server, since this will likely crash the A-GNSS software.
Page 159 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 loc- ation to be set. With other equipment, you can also download the data to your com- puter, and then move the files to where they are needed.
Page 160: Holdover Mode
3.3 Managing References For almanac data: http://[IP address of your unit]/files/pub/gps/data/almanac/[YYYY]/[ZZZ]/[ZZZ].alm Where: YYYY: Year (Example: "2017"), and ZZZ: Day of year (Example: "050" for 19- February) 3.3.4 Holdover Mode When input references have been supplying input to VelaSync and input from all the ref- erences has been lost, VelaSync will not immediately declare loss of time syn- chronization, but first will go into Holdover mode.
Page 161 3.3 Managing References How long will the unit remain in Holdover mode? VelaSync will remain in Holdover mode until either: a. 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.
Page 162 3.3 Managing References For more information on the TFOM value and Phase Error Limit, see "Configuring the Oscillator" on page 153. 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 163 3.3 Managing References duration than a TCXO oscillator (TCXOs are considerably less stable than a Rb oscil- lator). Oscillator Phase Drift The chart below provides typical stability performance for the oscillator types that can be found in VelaSync units. These numbers are based on the oscillator being locked to a reference for two weeks, but then loses GPS reception for an extended period of time, while the ambient temperature remains stable.
Page 164: Managing The Oscillator
3.4 Managing the Oscillator Note: Due to Leap Seconds that are periodically inserted into the UTC and Local timescales, it is not normally recommended to exceed 30 days of Holdover without an external reference that can supply Leap Second information being applied (such as GNSS). Configuring a Holdover value exceeding 30 days could result in a one-second time error in the UTC or Local timescales until an external reference (GNSS or IRIG input) is restored or a manually configured Leap Second is asserted by a user (leap seconds do...
Page 165: Configuring The Oscillator
3.4 Managing the Oscillator VelaSync’s internal oscillator is normally disciplined to an input reference (such as GNSS, IRIG input, 1PPS input, etc.) in order to provide the highest degree of oscillator accuracy and to account for oscillator drift. While disciplining (with a 1PPS input reference input present and valid), the oscillator’s output frequency is monitored and based on the meas- ured frequency, the oscillator is steered to maintain a very accurate 10 MHz output.
Page 166 3.4 Managing the Oscillator 1. Navigate to MANAGEMENT > OTHER: Disciplining. 2. Click the GEAR icon at the top of the Status panel. The Oscillators Settings win- dow will display: 3. Populate the fields: Maximum TFOM for Sync: When TFOM (Time Figure of Merit, see also "Time Figure of Merit (TFOM)"...
Page 167: Time Figure Of Merit (Tfom)
3.4 Managing the Oscillator Restart Tracking: Check this box, and click Submit if you want to manually restart disciplining tracking. This option causes the disciplining algorithm to stop tracking the input ref- erence and start over (as if it was just acquired). This can be useful if there is a large phase offset between reference 1PPS and system 1PPS, as it may occur when going back into sync to the external reference after a long hold- over.
Page 168: Monitoring The Oscillator
3.4 Managing the Oscillator Reported TFOM Value Estimated Time Error (ETE) 1 msec < ETE <= 10 msec 10 msec < ETE <= 100 msec 100 msec < ETE <= 1 sec 1 sec < ETE <= 10 sec 10 sec < ETE <= 100 sec 100 sec <...
Page 169 3.4 Managing the Oscillator 1. Navigate to MANAGEMENT > OTHER: Disciplining. 2. 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 tim- ing state.
Page 170 3.4 Managing the Oscillator dow will vary depending upon the type of oscillator installed and the oscillator adjustment algorithm). Current DAC Setting: Current DAC value, as determined by the oscillator dis- ciplining system. The value is converted into a voltage that is used to discipline the oscillator.
Page 171: Oscillator Logs
3.4 Managing the Oscillator Oscillator History Panel offers real- time graphical monitoring of VelaSync’s internal timing. The following graphs plot key oscillator-relevant data over time:: Phase Error Magnitude: See 1PPS Phase Error Frequency Error: See 10_MHz_Frequency_Error Scaled DAC Value: See DAC Step Oscillator Temperature, which has an effect on oscillator accuracy, and there-...
Page 172 3.4 Managing the Oscillator delete the log file, click the TRASH CAN icon, and confirm. CHAPTER 3 • VelaSync User's Manual Rev. 3...
Page 173: 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 4 •...
Page 174: 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 advantages over shutting the unit down by interrupting the power supply: The shutdown process will be logged The System Clock will update the Real Time Clock with the latest System Time.
Page 175: Rebooting The System
4.2 Rebooting the System 4.2 Rebooting the System To reboot VelaSync via the Web UI: 1. Navigate to TOOLS > SYSTEM: Reboot/Halt. 2. Select the Restart after Shutdown box in the Reboot/Halt window. 3. 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 176: Removing/Installing A Hard Disk Drive
4.3 Hardware Tasks 3. To remove the power supply module from the VelaSync unit, push the release tab to the side, and then pull the module straight out. Figure 4-1: Power supply removal 4. Replace the failed power supply module with a replacement unit. Note: Only use the approved type of power supply, for more information, see...
Page 177 4.3 Hardware Tasks Proceed as follows: Removing the bezel Remove the front bezel from the chassis, by unlocking it with the key, then press- ing 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 178: Notifications
4.4 Notifications Caution: In order to maintain proper airflow, each HDD carrier must always be re-installed into the unit, even if empty. remove an HDD from its carrier, loosen the three screws on either side. install an HDD into a carrier, insert it into the carrier with its PCB facing down.
Page 179: Configuring Notifications
4.4 Notifications each Email Address field. If desired, the same email address can be used in all of the fields, or different addresses can be used for different events. Note: Whether or not notifications are enabled/disabled for a given event, the occurrence of the event is always logged. All available VelaSync events that can generate a notification to be sent are located under different tabs in the Notification Events panel: Timing, GPS, and System.
Page 180 4.4 Notifications For more information on this subject, see the Spectracom Technical Email Notification Setup Note Events panel, offering three tabs: Timing: Events for Sync Status and Holdover, Frequency error, Input references and the internal oscillator. GPS: Events related to the GNSS receiver, including antenna cabling, tracking less than the minimum number of satellites and GNSS receiver faults.
Page 181: Notification Event Types
4.4 Notifications Email Address — Enter the address to which the email should be sent when triggered by the event. Note: Each event can be configured with the desired email address that is specific to just that one event only. Note that only one email address can be specified in each Email Address field.
Page 182: Gps Tab: Events
4.4 Notifications 4.4.2.2 GPS Tab: Events Too Few GPS Sat, Minor Alarm Too Few GPS Sat, Minor, Cleared Too Few GPS Sat, Major Alarm Too Few GPS Sat, Major, Cleared GPS Antenna Problem GPS Antenna OK GPS Receiver Fault GPS Receiver Fault Cleared Under the GPS Events...
Page 183 4.4 Notifications The alarm notification feature described below allows you to be notified of a potential reception issue BEFORE the GNSS reference becomes invalid. This may be useful e.g., to notify system operators of a deteriorating signal reception before VelaSync loses the GNSS reference.
Page 184: Setting Up Snmp Notifications
4.4 Notifications delay of e.g., 5 seconds, however, would not trigger an alarm if the number of received satellites drops below the specified number for only 3 seconds. You can configure this event to cause either a Minor alarm, or a Major alarm, or both. To learn more about Minor and Major alarms, see "Minor and Major Alarms"...
Page 185 4.4 Notifications 3. The Email Setup window will display: Email Configuration box provides two example configuration files. One is for interfacing VelaSync with an Email Exchange server; and the other is for sending emails via Gmail: 4. To configure the applicable example email configuration, delete the comments (“#”) from each line and replace the “<>”...
Page 186 4.4 Notifications 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> set smtp-auth-password=<password>...
Page 187: Managing Users And Security
"factory" The default factory account with the username spfactory is meant to provide access to Spectracom technical support personnel. You can delete this account, if you Clean and Halt Clean- so prefer. Note, however, that executing the command (see...
Page 188 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 189: Rules For Usernames
4.5 Managing Users and Security Authentication: "user" can access this page but can only change his/her own password. Users cannot create any new accounts and cannot modify any accounts. Reference Priority: "user" can access this page and modify settings. Notifications: "user" can access this page and modify settings. Time Management: "user"...
Page 190 VelaSync. Note: The spfactory account is for use by Spectracom service per- sonnel. While the spfactory account can be deleted by an admin- istrator, it should be noted that this may potentially limit remotely provided technical support.
Page 191 4.5 Managing Users and Security To add a user account: 1. Enter a Username. (For rules, see "Rules for Usernames" on page 177.) 2. Enter a Password. The password requirements are configurable, see "Managing Passwords" on the next page. By default a password can be any combination of upper- and lower-case characters.
Page 192: Managing Passwords
4.5 Managing Users and Security To change a user account: 1. In the Add or Change User window the Username field will be populated. a. To change it, type the new name. b. To change the user account’s password, type the new password in the Password field and confirm it in the Repeat New Password...
Page 193: The Administrator Password
4.5 Managing Users and Security click Submit. 4.5.2.2 The Administrator Password admin123 The factory default administrator login password value of can be changed from the default value to any desired value. If the current password is known, it can be changed using the VelaSync Web UI.
Page 194: Lost Password
4.5 Managing Users and Security 3. In the Old Password field, type the current password. 4. In the New Password field, type the new password. Note: The new password can be from 8 to 32 characters in length. ...
Page 195 4.5 Managing Users and Security 3. Click the CHANGE button. 4. In the Add or Change User window: 1. Enter a new password. Note: The new password can be from 8 to 32 characters in length. 2. Confirm the new password. ...
Page 196: Web Ui Timeout
4.6 Miscellanous Typical Configuration Tasks 4.5.3 Web UI Timeout For security reasons, the Web UI will automatically timeout after a set number of minutes, i.e. you will be logged out by the system, regardless of activity, and need to act- ively login again.
Page 197: Creating A Login Banner
4.6 Miscellanous Typical Configuration Tasks 4.6.2 Creating a Login Banner A login banner is a customizable banner message displayed on the login page of the VelaSync Web UI. The login banner can be used, for example, to identify a unit. Figure 4-4: ...
Page 198: Show Clock
4.6 Miscellanous Typical Configuration Tasks Web UI access. 6. To test your new banner, click Apply to see a preview at the bottom of the win- dow. OR, click Submit, and log out of the Web UI, and back in so as to see the ban- ner on the actual login page.
Page 199: 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 Win- dows PCs can be found online in the Spectracom Technical Note Synchronizing Win- dows Computers...
Page 200 4.7 Quality Management Status Monitoring via the HOME Screen HOME screen of the VelaSync Web UI provides a system status overview (see also "The Web UI HOME Screen" on page 13). HOME screen is divided into four panels: System Status panel Reference—Indicates the status of the current synchronizing reference, if any.
Page 201 4.7 Quality Management Temperature—The current board temperature will be displayed here. Reference Status panel 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.
Page 202: Ethernet Monitoring
4.7 Quality Management Status Monitoring via the System Monitor Screen To display status information pertaining mainly to VelaSync's current hardware status, navigate to TOOLS > SYSTEM > System Monitor. The information provided on the System Monitor Screen is subdivided into three pan- els: System Status panel This is identical with the HOME screen...
Page 203: Ntp Status Monitoring
4.7 Quality Management 1. 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 addi- tional Ethernet ports, their throughput data will also be displayed. In the Traffic pane on the right the traffic throughput in Bytes per second is displayed...
Page 204: Monitoring The Oscillator
4.7 Quality Management 1. To access the NTP Status Summary panel, navigate to MANAGEMENT > NETWORK: NTP Setup. 2. The NTP Status Summary panel is at the lower left of the screen. The panel con- tains the following information: Selected Ref—The reference VelaSync is currently using.
Page 205 4.7 Quality Management 1. Navigate to MANAGEMENT > OTHER: Disciplining. 2. 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 tim- ing state.
Page 206 4.7 Quality Management dow will vary depending upon the type of oscillator installed and the oscillator adjustment algorithm). Current DAC Setting: Current DAC value, as determined by the oscillator dis- ciplining system. The value is converted into a voltage that is used to discipline the oscillator.
Page 207: Logs
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 208 4.7 Quality Management No longer in Holdover: Input references were lost at one point (or declared not valid), but have since been restored OR the Input references were not restored before the Holdover period expired (Time Sync alarm is asserted). Sync: VelaSync is synchronized to its selected Time and 1PPS reference inputs.
Page 209 4.7 Quality Management Under-current indication < 8 mA Over-current indication > 80 mA Note: This alarm condition will also be present if a GNSS antenna split- ter that does not contain a load to simulate an antenna being present is being used. GPS Antenna OK: The antenna coax cable was just connected or an open or short in the antenna cable was being detected but is no longer being detected.
Page 210 4.7 Quality Management The NTP throughput statistics data can be utilized to calculate mean values and the standard deviation. Example log entries include: Synchronized to (IP address), stratum=1: NTP is synchronizing to another Stratum 1 NTP server. ntp exiting on signal 15: This log entry indicates NTP is now indicating to the net- work that it is a Stratum 15 time server because it is not synchronized to its selec- ted reference.
Page 211 4.7 Quality Management Every hourly entry in the log also contains a quality value, represented by “Q= xxxx” (where x can be any number from 0000 through 3600). The Qualification log records how many satellites were tracked over a given hour. If for every second of the hour a tracked satellite was in view, the Quality value will equal 3600.
Page 212: The Logs Screen
4.7 Quality Management condition (an open or short exists in the GNSS antenna cable, or the GNSS antenna is not connected to VelaSync). The receiver will attempt to continue the normal acquisition and tracking process regardless of the antenna status. GR antenna ok: The antenna coax cable was connected at this time or an open or short in the antenna cabling was occurring but is no longer being detected.
Page 213: Saving And Downloading Logs
3. Select the log bundle save locaion. The file name is logs.tar.gz 4. If so asked by Spectracom Technical Support, attach the bundled log files (typ- ically together with the oscillator status log, see: "Saving and Downloading the Oscillator Log"...
Page 214: Setting Up A Remote Log Server
2. Click on the ARROW icon in the top-right corner of the screen. Save the .csv file to your computer. 3. If so asked by Spectracom Technical Support, attach the oscillator status log file (typically together with the bundled VelaSync log files, see: "Saving and Down-...
Page 215 4.7 Quality Management 3. Enter the IP address or host server name (e.g., “MyDomain.com”) you want to use as a remote log server. 4. Click the Submit button. 5. Your remote log server will appear in the Remote Log Server panel.
Page 216: Clearing All Logs
4.7.2.6 Clearing All Logs Note: Authentication logs and NTP logs cannot be cleared. All local logs in the home/spectracom directory will be logged. Other logs e.g., located on Syslog Servers, must be maintained by the user. To clear all locally stored log files: ...
Page 217 File(s). Note that Delete Upgrade File Update System cannot be selected at the same time. 4. Download the latest upgrade software bundle from the Spectracom website onto your PC. 5. Perform the actual upgrade by navigating to TOOLS >...
Page 218 4.8 Updates and Licenses Note: In the event that the update failed, see "Troubleshooting Soft- ware Update" on page 215. CHAPTER 4 • VelaSync User's Manual Rev. 3...
Page 219: 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 220: 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 221: Troubleshooting: System Configuration
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 con- figuration (you may also be asked for this when contacting Spectracom Technical Sup- port.) Select TOOLS >...
Page 222: Troubleshooting Via Web Ui Status Page
APPENDIX Verify Current Status Indication Troubleshooting LEDs on Green “Good link” VelaSync ICMP 1) Verify one end of standard network cable network is not solid green test is failing. is connected to VelaSync’s Ethernet port and connector VelaSync is not other end is connected to a hub/switch.
Page 223 APPENDIX Web UI Page loc- Current Status Indication Troubleshooting ation HOME page, Sys- SYNC indicator is not VelaSync is in All available Input References have “lit” (not Green).HOLD Holdover been lost. The Reference Status tem Status indicator is “lit” mode—OR— table on the HOME page will show panel, Status (Orange).—OR—FAULT...
Page 224: Troubleshooting Gnss Reception
APPENDIX Web UI Page loc- Current Status Indication Troubleshooting ation MANAGEMENT/ Cannot login or access The following This message is displayed when the Web UI. error message any value has been added to the NETWORK page is displayed: Network Access Rules table and “Forbidden your PC is not listed in the table as You don’t have...
Page 225: Troubleshooting Hardware Issues
Do not user power supplies other than the original model installed in the unit. Replace- ment 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 226: Troubleshooting - 1Pps, 10 Mhz Outputs
APPENDIX 5.1.7 Troubleshooting – 1PPS, 10 MHz Outputs If the 1PPS and/or the 10 MHz output (s) are not present, input power may not be applied. Or VelaSync is not synchronized to its input references and Signature Control is enabled. Web UI Page Current Status Indication...
Page 227: Troubleshooting Software Update
2. 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 synchronization. For UNIX/Linux computer synchronization, please visit http://www.ntp.org/...
Page 228: Command-Line Interface
VelaSync Web UI can be used. While it is also possible to retrieve selected logs, a terminal emulator does not replace the VelaSync Web UI. Spectracom does not distribute or support its own terminal emulator, and newer Microsoft operating systems no longer include HyperTerminal. However, there are sev- ®...
Page 229: Cli Commands
APPENDIX 4. Using the Terminal window, you can now submit commands. 5.2.2 CLI Commands VelaSync features a suite of command-line interface (CLI) commands that can be used to configure parameters and retrieve status information or log files via a remote con- nection, using the telnet or ssh (if enabled) protocol.
Page 230 APPENDIX Command Description defcert Used to create a new Spectracom self-signed SSL certificate for HTTPS in case of expiration of the original certificate dhcp4get Displays whether DHCP is enabled dhcp4set Used to enable or disable DHCP dns4get Displays the configured DNS servers...
Page 231 APPENDIX Command Description Used to set IPv4 Ethernet port settings information (IP address net mask ip4set and gateway) Used to add IPv6 Ethernet port settings information (IP address net mask ip6add and gateway) ip6del Used to delete IPv6 IP address ip6get Used to obtain the IPv6 IP address iptables...
Page 232 APPENDIX Command Description radius server list Lists radius servers radius server add <host> <port> <key> <timeout> Adds radius server radius server del <id> Deletes radius server number <id> reboot Used to warm-boot the unit without having to disconnect or reconnect power reftable Displays reference priority table...
Page 233: Irig Standards And Specifications
APPENDIX Command Description slaacset Used to enable or disable SLAAC stateset Enable or disable an entry in the reference priority table. index = 0...15. state = 0 (disable), 1 (enable) status Displays information about the oscillator disciplining syncstate Display timing system synchronization state sysupgrade Performs system upgrade using the update bundle provided testevent...
Page 234: Irig Carrier Frequencies
APPENDIX around 100 nanoseconds or so (plus the cable delays between VelaSync and the other device, as well as the processing delays of the other system itself). IRIG AM functionality is available through an option card. Note that all IRIG outputs has its own available ‘offset’ capability, which is configurable via VelaSync’s Web UI, to help account for cabling and processing delays of the device each output is connected with.
Page 235 APPENDIX Time Frame Format Encoding Modulation Carrier Coded Expressions Bit rate Interval IRIG-A A130 10 kHz , CF and SBS 1000 0.1 sec IRIG-A A131 10 kHz , CF 1000 0.1 sec IRIG-A A132 10 kHz 1000 0.1 sec IRIG-A A133 10 kHz , SBS...
Page 236 APPENDIX Time Frame Format Encoding Modulation Carrier Coded Expressions Bit rate Interval IRIG-B B124 1 kHz , BCD , CF 100 pps 1 sec YEAR and SBS IRIG-B B125 1 kHz , BCD , and 100 pps 1 sec YEAR IRIG-B B126 1 kHz...
Page 237 100 pps 1 sec The Spectracom IRIG formats use the control functions for BCD year information and a Time Sync Status bit and in format E the control functions are used for straight binary seconds (SBS). Refer to individual IRIG Time Code description figures and text. IRIG...
Page 238: Irig B Output
These control bits could be used for any use and there was no defined function. Spectracom used the control function element 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 binary seconds (SBS).
Page 239 APPENDIX Figure 5-1: IRIG B time code description The IRIG B code contains the Binary Coded Decimal (BCD) time of year, Control Func- tion (CF) field and the Straight Binary Seconds time of day. The following figure illus- trates the IRIG B data structure. The BCD time of year provides the day of the year, 1- 366, and the time of day including seconds.
Page 240 APPENDIX Code word - 17 binary digits. Seconds only, recycles daily. 3. 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 241 APPENDIX Reference marker, 1 per second. The reference marker appears as two con- secutive position 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 242: Irig E Output
APPENDIX C.F. Element # Digit # Function Space Space Space Space Space Space Space Space Space 5.3.4 IRIG E Output 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 struc- ture.
Page 243 APPENDIX 50 and 98. The VelaSync uses the Control Function field to encode year data, time synchronization status, and SBS time data. Table B-2 lists the Control Func- tion 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 244 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 ele- ments (P and P ). The leading edge of the second 80 ms element (P ) is the "on time"...
Page 245 APPENDIX read a binary "one" during any specified number of time frames. Each control element is identified on the Control Function Field Table. Table 5-6: IRIG E control function field BIT No. CF ELEMENT No. FUNCTION SPACE SPACE SPACE SPACE SPACE TIME SYNC_STATUS...
Page 246: Irig Output Accuracy Specifications
APPENDIX BIT No. CF ELEMENT No. FUNCTION SPACE SPACE SPACE SPACE PID P8 POSITION IDENTIFIER SBS 20 SBS 21 SBS 22 SBS 23 SBS 24 SBS 25 SBS 26 SBS 27 SBS 28 PID P9 POSITION IDENTIFIER SBS 29 SBS 210 SBS 211 SBS 212 SBS 213...
Page 247: 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 248 APPENDIX Regarding the selection of a suitable antenna location, the following recommendations generally apply: clear view of the sky down to the horizon in all directions is recommended for the most optimal satellite reception. The mounting location of the external GNSS antenna should be free of objects that could obstruct satellite visibility from straight overhead to within 20 degrees of the horizon in all directions.
Page 249: 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 bulletins, if required.
Page 250: Links To External Information
Upon initial start of the VelaSync Web UI, you will be prompted to register your new product. It is also possible to register at a later time via the HELP menu item, or directly on the Spectracom website register.spectracom.com 5.7 ...
Page 251 APPENDIX Server management System specifications VelaSync User's Manual...
Page 252: Technical Support
"Support" page 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 lis- ted below.
Page 253: Return Shipments
APPENDIX 5.9 Return Shipments Please contact Spectracom Technical Support before returning any equipment to Spec- tracom. Technical Support must provide you with a Return Material Authorization Num- ber (RMA#) prior to shipment. When contacting Technical Support, please be prepared to provide your equipment serial number (s) and a description of the failure symptoms or issues you would like resolved.
Page 254 APPENDIX about the suitability this software for any purpose. It is provided "as is" without express or implied warranty. *********************************************************************** Content starting in 2011 from Harlan Stenn, Danny Mayer, and Martin Burnicki is: Copyright (c) Network Time Foundation 2011-2015 All Rights Reserved Redistribution and use in source and binary forms, with or without modification, are per- mitted provided that the following conditions are met: ...
Page 255 APPENDIX 6. Karl Berry <karl(at)owl.HQ.ileaf.com> syslog to file option 7. Greg Brackley <greg.brackley(at)bigfoot.com> Major rework of WINNT port. Clean up recvbuf and iosignal code into separate modules. 8. Marc Brett <Marc.Brett(at)westgeo.com> Magnavox GPS clock driver 9. Piete Brooks <Piete.Brooks(at)cl.cam.ac.uk> MSF clock driver, Trimble PARSE support ...
Page 256 APPENDIX 28. Frank Kardel <kardel (at) ntp (dot) org> PARSE <GENERIC> (driver 14 reference clocks), STREAMS modules for PARSE, support scripts, syslog cleanup, dynamic interface handling 29. Johannes Maximilian Kuehn <kuehn(at)ntp.org> Rewrote sntp to comply with NTPv4 specification, ntpq saveconfig ...
Page 257: Openssh
APPENDIX 48. Jack Sasportas <jack(at)innovativeinternet.com> Saved a Lot of space on the stuff in the html/pic/ subdirectory 49. Ray Schnitzler <schnitz(at)unipress.com> Unixware1 port 50. Michael Shields <shields(at)tembel.org> USNO clock driver 51. Jeff Steinman <jss(at)pebbles.jpl.nasa.gov> Datum PTS clock driver ...
Page 258 APPENDIX RSA is no longer included, found in the OpenSSL library IDEA is no longer included, its use is deprecated DES is now external, in the OpenSSL library GMP is no longer used, and instead we call BN code from OpenSSL Zlib is now external, in a library The make-ssh-known-hosts script is no longer included TSS has been removed...
Page 259 APPENDIX 3) The 32-bit CRC compensation attack detector in deattack.c was contributed by CORE SDI S.A. under a BSD-style license. Cryptographic attack detector for ssh - source code Copyright (c) 1998 CORE SDI S.A., Buenos Aires, Argentina. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that this copyright notice is retained.
Page 260: Openssl
APPENDIX 3. All advertising materials mentioning features or use of this software must display the following acknowledgement: This product includes software developed by the University of California, Berke- ley and its contributors. 4. Neither the name of the University nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
Page 261 APPENDIX licenses are BSD- style Open Source licenses. In case of any license issues related to OpenSSL please contact openssl-core(at)openssl.org. OpenSSL License ==================================================================== Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1.
Page 262 APPENDIX is covered by the same copyright terms except that the holder is Tim Hudson (tjh(at)cryptsoft.- com). Copyright remains Eric Young's, and as such any Copyright notices in the code are not to be removed. If this package is used in a product, Eric Young should be given attribution as the author of the parts of the library used.
Page 263 APPENDIX CMU AND THE REGENTS OF THE UNIVERSITY OF CALIFORNIA DISCLAIM ALL WARRANTIES WITH REGARD THIS SOFTWARE, INCLUDING IMPLIED WARRANTIES MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL CMU OR THE REGENTS OF THE UNIVERSITY OF CALIFORNIA BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM THE LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS...
Page 264 APPENDIX SPECIAL, EXEMPLARY, OR 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 265: List Of Tables
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...
Page 266: List Of Images
APPENDIX 5.12 List of Images Figure 1-1: VelaSync High Speed Time Server Figure 1-2: Front Panel (bezel removed) Figure 1-3: VelaSync rear panel Figure 2-1: Rack rail assembly Figure 2-2: Optional inner rails Figure 2-3: Rack installation Figure 2-4: VelaSync rear panel Figure 2-5: ON/OFF button Figure 2-6: TSync timing card connections Figure 2-7: Adapter cable...
Page 267 APPENDIX VelaSync User's Manual...
Page 268 BLANK PAGE. VelaSync User's Manual...
Page 269 Alarm threshold, GPS Noti- fication Alarm Command- line Ancillary kit interpreter Antenna, GPS contact, Spectracom Antenna, GPS, location Assisted GPS Authentication Authorized keys file Daylight Savings Time Default IP addresses ...
Page 270 INDEX enable DHCP IP addresses, default Engine Id IPMI EST API IPv4 Estimated Time Error IRIG output accuracy Ethernet Standards configuration IRIG Carrier Frequencies Ethernet connection Keys, host ...
Page 271 INDEX Primary Navigation menu Private keys, SSH Public keys, SSH Netmask Network port, enabling Network services Network setup Rack installation Notifications Rack mounting RAID Peers 75-76 Real Time Clock ...
Page 272 INDEX Setup, advanced TFOM Setup, BIOS Timeout Setup, server Timeout, Web UI, automatic SFTP Troubleshooting Shipment, return Show Clock Single satellite GNSS receiver Unicast mode Update, software SNMP ...

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Spectracom VelaSync 1232 User Manual

CHAPTER 1 Introduction & Overview

CHAPTER 2 Installation & Setup

CHAPTER 3 Managing Time

CHAPTER 4 System Administration

Appendix

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Troubleshooting

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