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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.

5.3.2

IRIG Carrier Frequencies

Each IRIG code specifies a carrier frequency that is modulated to encode date and time, as
well as control bits to time-stamp events. Initially, IRIG applications were primarily military
and government associated. Today, IRIG is commonly used to synchronize voice loggers,
recall recorders, and sequential event loggers found in emergency dispatch centers and
power utilities.

Table 5-3:

Available IRIG output signals

Format

Encoding Modulation

Carrier

Coded Expressions

Bit rate

Time Frame

Interval

IRIG-A

IRIG-A

A000

DCLS

N/A

BCD

TOY

, CF and SBS

1000
pps

0.1 sec

IRIG-A

A001

DCLS

N/A

BCD

TOY

, CF

1000
pps

0.1 sec

IRIG-A

A002

DCLS

N/A

BCD

TOY

1000
pps

0.1 sec

IRIG-A

A003

DCLS

N/A

BCD

TOY

, SBS

1000
pps

0.1 sec

IRIG-A

A004

DCLS

N/A

BCD

TOY

, BCD

YEAR

, CF

and SBS

1000
pps

0.1 sec

IRIG-A

A005

DCLS

N/A

BCD

TOY

, BCD

YEAR

, and

CF

1000
pps

0.1 sec

IRIG-A

A006

DCLS

N/A

BCD

TOY

, BCD

YEAR

1000
pps

0.1 sec

IRIG-A

A007

DCLS

N/A

BCD

TOY

, BCD

YEAR

, and

SBS

1000
pps

0.1 sec

IRIG-A

A130

AM

10 kHz

BCD

TOY

, CF and SBS

1000
pps

0.1 sec

IRIG-A

A131

AM

10 kHz

BCD

TOY

, CF

1000
pps

0.1 sec

IRIG-A

A132

AM

10 kHz

BCD

TOY

1000
pps

0.1 sec

VelaSync 1232 User Manual

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APPENDIX

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Содержание Spectracom VelaSync 1232

Страница 1: ...VelaSync 1232 MODEL User Manual Spectracom Part No 1232 5000 0050 Revision 4 Date 2 Apr 2019 spectracom com...

Страница 2: ......

Страница 3: ...ance with the terms of those agreements No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or any means electronic or mechanical including pho tocop...

Страница 4: ...Blank page II VelaSync 1232 User Manual...

Страница 5: ...1 4 2 1 Timing Connector 6 1 4 2 2 Communication Ports 9 1 4 3 Environmental Specifications 9 1 4 4 Size Weight Power 9 1 5 Front Panel Overview 10 1 5 1 Control Buttons 10 1 5 2 Control Panel LEDs 10...

Страница 6: ...et connection 32 2 7 2 Setting Up an IP Address via the Serial Port 33 2 7 3 Subnet Mask Values 35 2 8 Advanced Timing Connections 35 2 8 1 TSync I O Signals 35 2 8 1 1 Timing Interface Adapter Cable...

Страница 7: ...ions 84 2 10 11 Spectracom Technical Support for NTP 86 2 11 Configuring PTP 86 2 11 1 The PTP Screen 87 2 11 1 1 The PTP Settings Panel 87 2 11 1 2 The PTP Statistics Panel 90 2 11 2 Enabling Disabli...

Страница 8: ...122 3 3 3 1 Reviewing the GNSS Reference Status 123 3 3 3 2 Determining Your GNSS Receiver Model 128 3 3 3 3 Selecting a GNSS Receiver Mode 129 3 3 3 4 Setting GNSS Receiver Dynamics 132 3 3 3 5 Perfo...

Страница 9: ...ccounts 175 4 5 1 2 About user Account Permissions 175 4 5 1 3 Rules for Usernames 177 4 5 1 4 Adding Deleting Changing User Accounts 177 4 5 2 Managing Passwords 180 4 5 2 1 Configuring Password Poli...

Страница 10: ...atus Page 210 5 1 5 Troubleshooting GNSS Reception 212 5 1 6 Troubleshooting Hardware Issues 213 5 1 6 1 Power Supply Failure 213 5 1 7 Troubleshooting Network PCs Cannot Sync 213 5 1 8 Troubleshootin...

Страница 11: ...37 5 9 Return Shipments 237 5 10 License Notices 238 5 10 1 Chrony v3 0 238 5 10 2 OpenSSH 242 5 10 3 OpenSSL 245 5 11 List of Tables 250 5 12 List of Images 250 5 13 Document Revision History 251 IND...

Страница 12: ...BLANK PAGE X VelaSync 1232 User Manual TABLE OF CONTENTS...

Страница 13: ...g topics are included in this Chapter 1 1 Product Overview 2 1 2 About this Manual 2 1 3 Designated Use of this Product 4 1 4 Technical Specifications 5 1 5 Front Panel Overview 10 1 6 Rear Panel Over...

Страница 14: ...comprised of a standard chassis and motherboard as well as a GNSS receiver plus oscillator OCXO or Rubidium two hard disks RAID two power supplies and several time frequency and com munication ports S...

Страница 15: ...the user documentation for the Supermicro SuperO SuperServer 5018R WR which can be found under https www supermicro com manuals superserver 1U MNL 1771 pdf Manual Organization This User Manual is orga...

Страница 16: ...ndards and the recognized safety rules Nevertheless its use may constitute a risk to the operator or installation maintenance personnel if used under conditions that must be deemed unsafe or for purpo...

Страница 17: ...ower supplies 100 240 VAC auto switch 50 60 Hz 500 W each with IEC60320 C14 inlet coupler Connectivity I O connectors See Rear Panel Overview on page 12 1 4 1 2 GPS GNSS Receiver Connector SMA 5V to p...

Страница 18: ...nectors 1 4 2 1 Timing Connector The pre installed TSync model 25 pin Micro D Sub Connector when combined with the adaptor cable and breakout cable both included provides the following I O options Inp...

Страница 19: ...m between pulses Repetition rate More than 10 000 events per second Resolution 5 ns Outputs 1 PPS Outputs 1Hz pulse rising edge or falling edge active selectable 40 ns to 900 ms active pulse width sel...

Страница 20: ...0 user settable 1Vp p to 12 Vp p into 600 Output impedance 50 nominal Output load 50 minimum Modulation ratio 3 1 nominal Accuracy 2 to 200 microseconds IRIG format dependent IRIG DCLS Output Outputs...

Страница 21: ...4x or 2x 10 Gb plus 2x 40 Gb1 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 Environmental Specifications Operation 10 C to 35 C RH 8 to 90 non co...

Страница 22: ...er Note Standby power continues to be supplied to the system i e the power supplies and the IPMI remain energized HDD Release Lever Pull to release one of the two hot swap RAID hard disks 1 5 2 Contro...

Страница 23: ...indicates drive failure you should also receive an automatic mes sage from your system management software To release a hard disk drive carrier in order to remove the hot swappable hard disk drive pus...

Страница 24: ...tacom TSync timing connector 2 Includes rear status LED s Status LEDs on page 42 10 USB 4x 11 IPMI 12 Serial 13 14 Power supplies Note VelaSync does not support having multiple network interfaces on t...

Страница 25: ...The minimum browser requirements for the Web UI are Internet Explorer 9 or higher Firefox or Chrome 1 7 1 The Web UI HOME Screen The HOME screen of the VelaSync web user interface Web UI provides com...

Страница 26: ...ERFACES Menu The INTERFACES menu on the Main screen provides access to VelaSync s External REFERENCES e g the GNSS reference input Detected OUTPUTS such as 10 MHz and 1PPS Installed OPTIONS Clicking o...

Страница 27: ...y for timing inputs Notifications Configure the notifications triggered by VelaSync s events A noti fication can be a combination of a mask alarm and or SNMP Trap and or email Time Management Manage t...

Страница 28: ...16 CHAPTER 1 VelaSync 1232 User Manual Rev 4 1 7 The VelaSync Web UI...

Страница 29: ...ety symbols Symbol Signal word Definition DANGER Potentially dangerous situation which may lead to per sonal injury or death Follow the instructions closely CAUTION Potential equipment damage or destr...

Страница 30: ...uld be given to the connection of the equipment to the power supply circuitry and the effect that any possible overloading of circuits might have on overcurrent pro tection and power supply wiring App...

Страница 31: ...o not work alone The other person should also know how to disconnect power to the unit you are working on Always remove power from the unit before working on it Before disconnecting power gracefully s...

Страница 32: ...PCBs come into contact with your clothing Handle PCBs on their edges only avoid touching electronic components or contacts If you have to handle a chip avoid touching its pins 1 9 Regulatory Complian...

Страница 33: ...32 2012 AC 2013 CISPR 32 2012 Class A ICES 003 Issue 6 Class A FCC CFR 47 PART 15 SubPart B 2016 Class A EN55024 2010 Class A EN 61000 3 2 2014 EN 61000 3 3 2013 AS NZS CISPR 32 2015 Radio Spectrum Ef...

Страница 34: ...BLANK PAGE 1 9 Regulatory Compliance 22 CHAPTER 1 VelaSync 1232 User Manual Rev 4...

Страница 35: ...24 2 2 Selecting the Right Installation Location 24 2 3 Rack Mounting SAFETY 25 2 4 Rack Installation 25 2 5 Basic Connections Setup 29 2 6 Accessing the Web UI 31 2 7 Configuring IP Address es 32 2 8...

Страница 36: ...ets 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 ad...

Страница 37: ...ack Mounting SAFETY Read YOUR SAFETY on page 17 Before installing VelaSync in the fully extended rails or before extending the unit from the rack ensure that the rack is stable enough to support the w...

Страница 38: ...e installed to the server chassis the outer rail assembly which faces the rack Figure 2 1 Rack rail assembly Optional inner rail extension elements shown in red are provided to accommodate install ati...

Страница 39: ...t snugly into the rack Secure the short bracket to the front side of the outer rail with two screws and the long bracket to the rear side of the outer rail with three screws Installing the server into...

Страница 40: ...elco type rack use two L shaped brackets on either side of the VelaSync chassis 1 Determine how far forward the unit will extend out of the front of the rack Determine a balanced front to back positio...

Страница 41: ...a GNSS Antenna Location on page 233 1 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 equi valent cab...

Страница 42: ...laSync housing However note that the unit is not running yet check the front indicator lamps they will remain dark 3 Switch the unit on by pressing the ON OFF button on the front panel Wait for the de...

Страница 43: ...rections in Accessing the Web UI below 9 Note You ll likely want to change the default IP address of the ETH ports you plan on using This procedure is described in the next topic You will need an Ethe...

Страница 44: ...namic IP address Once you are connected to the Web UI you can manually adjust the IP addresses for each ethernet port and enable or disable DHCP 2 7 1 Changing the IP address using an Ethernet connect...

Страница 45: ...er to apply a static IP address to any Ethernet port DHCP must be disabled To update network settings using a serial connection please see Setting Up an IP Address via the Serial Port below 2 7 2 Sett...

Страница 46: ...on page 215 2 Login to VelaSync with a user account that has admin group rights such as the default spadmin account the default password is admin123 3 Disable DHCP type dhcp4set 0 off Enter Note For...

Страница 47: ...55 224 0 0 22 255 255 252 0 10 255 192 0 0 21 255 255 248 0 9 255 128 0 0 20 255 255 240 0 8 255 0 0 0 19 255 255 224 0 2 8 Advanced Timing Connections Figure 2 6 TSync timing card connections 2 8 1 T...

Страница 48: ...nnector on the card to the breakout cable Figure 2 7 Adapter cable 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 P...

Страница 49: ...T 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 connector to separate BNC and DB 9 connectors for use The basic breakout ca...

Страница 50: ...t 0 11 IRIG AM Input 5 Ground 16 GPIO Output 1 Reserved 6 GPIO Input 0 18 Ground 7 External 1PPS Input 21 Ground 8 Ground 24 IRIG DCLS Input 9 IRIG AM Output 25 IRIG DCLS Input 10 IRIG AM Input P2 Dig...

Страница 51: ...rnal 1PPS Input BS Ground P6 1PPS Output BNC Female 1 1PPS Output BS Ground 2 8 1 3 Premium Breakout Cable Note The premium breakout cable must be purchased separately Contact Spectracom for details T...

Страница 52: ...PIO Output 0 16 GPIO Output 1 Reserved 4 GPIO Input 2 Reserved 17 GPIO Input 3 Reserved 5 Ground 18 Ground 6 GPIO Input 0 19 GPIO Input 1 Reserved 7 External 1PPS Input 20 1PPS Output 8 Ground 21 Grou...

Страница 53: ...RIG AM Input BS IRIG AM Input P6 IRIG AM Output BNC Female 1 IRIG AM Output BS Ground P7 1PPS Input BNC Female 1 External 1PPS Input BS Ground P8 GP Input DB 9 Female 1 GPIO Input 0 7 Ground 2 GPIO In...

Страница 54: ...oscillator is not dis ciplined by an external reference but con tinues to provide time frequency for the duration of the user set holdover time default 7200 seconds 2 hours red ALARM The unit does no...

Страница 55: ...to flash 4 Self test failure 5 Timing system failure 2 9 Configuring Network Settings Before configuring the network settings you need to setup access to VelaSync web user interface Web UI For more in...

Страница 56: ...UI login page and the CLI Note There is a 2000 character size limit SSH This button takes you to the SSH Setup window For details on setting up SSH see SSH on page 50 IPMI Enable Disable IPMI ADMIN p...

Страница 57: ...ns Panel on the left click General Settings 2 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 Defa...

Страница 58: ...ow CABLE UNPLUGGED the port is enabled but there is no cable attached Red DISABLED Locate the port you want to configure and click the GEAR button to enable configure the port or the INFO button to vi...

Страница 59: ...t automatically once DHCP is enabled Alternatively you may configure your DHCP server to NOT use a DNS address When DHCP is disabled DNS Primary is set manu ally using the format with no leading zeroe...

Страница 60: ...risks tcpdump can be disabled permanently Once toggled to OFF and after executing a page reload tcpdump will be deleted from the system The toggle switch will be removed and the function cannot be en...

Страница 61: ...m e n c l a t u r e IPv4 10 10 0 0 16 where 10 10 0 0 is the IP address and 16 is the subnet mask in prefix form See the table Subnet Mask Values on page 35 for a list of subnet mask values IPv6 2001...

Страница 62: ...re 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 SSH The SSH or Secure Shell prot...

Страница 63: ...delete existing keys and request the creation of new keys but it is often simpler to make these requests separately You can create individual RSA and DSA Host Public Private Key pairs Host keys must...

Страница 64: ...key bit length as supported by the SSH client tool These public keys are stored in a file in the ssh directory named authorized_keys The file is to be formatted such that the key is followed by the o...

Страница 65: ...l open to the Host Keys tab by default 2 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 3 Check the...

Страница 66: ...a public key into VelaSync This public key must match the private key found in the users account and be accessible to the SSH SCP or SFTP client program The user must then enter the Passphrase after a...

Страница 67: ...d_key File via CLI Secure shell sessions using an SSH client can be performed using the admin or a user defined account The user may use Account Password or Public Key with Passphrase authentication T...

Страница 68: ...phrase Example output from OpenSSH SCP and SFTP client commands are shown below Perform an SCP file transfer to the device using Account Password authen tication scp authorized_keys scp 10 10 200 5 ss...

Страница 69: ...The keep SSH alive timeout is hard set to 7200 seconds This value is not configurable 2 9 7 SNMP SNMP Simple Network Management Protocol is a widely used application layer protocol for managing and mo...

Страница 70: ...1 V2c on page 61 SNMP V3 This panel allows configuration of SNMP v3 functionality including the user name read write permissions authorization pass words as well as privilege Types and Passphrases Cli...

Страница 71: ...low Description A simple product description This is not editable in the SNMP Status Restoring the Default SNMP Configuration To restore the VelaSync to its default SNMP configuration 1 Navigate to th...

Страница 72: ...upport 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 progr...

Страница 73: ...not already present Spectracom s private enterprise MIB files can be requested and obtained from the Spectracom Customer Service department via email at techsupport spectracom com Note By default tec...

Страница 74: ...ers in length Permissions may be Read Only or Read Write The Version field provides a choice of V1 or V2c 5 Click Submit The created communities will appear in the SNMP V1 V2 panel Editing and Deletin...

Страница 75: ...etails you want to edit and click Submit OR To delete the entry click Delete 2 9 7 2 SNMP V3 SNMP V3 utilizes a user based security model which among other things offer enhanced security over SNMP V1...

Страница 76: ...des a choice between AES and DES The Priv Passphrase must be between 8 and 32 characters in length The Permissions field provides a choice between Read Write and Read Only 5 Click Submit The created u...

Страница 77: ...trap is sent because VelaSync either entered or exited the Holdover mode the trap varbind will indicate that VelaSync is either currently in Holdover mode or not currently in Holdover mode For testing...

Страница 78: ...mber such as 0x1234 The Id originates from the MIB Browser SNMP Manager v3 1 Auth Type provides a choice between MD5 the default and SHA v3 The Auth Password must be between 8 and 32 characters in len...

Страница 79: ...nterprise 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...

Страница 80: ...sed to synchronize time on any computer equipment compatible with the Network Time Pro tocol This includes Cisco routers and switches UNIX machines and Windows machines with suitable clients To synchr...

Страница 81: ...P Service and have it use the right Reference s See NTP Reference Configuration on page 75 2 Does your NTP Service use the right Timescale See NTP Output Timescale on page 73 3 If required have you se...

Страница 82: ...s See NTP Peers Adding Configuring Removing on page 79 For more information on NTP servers clients and Stratums see NTP Servers and Peers on page 75 The Actions panel is in the top left hand corner of...

Страница 83: ...Default NTP Configuration on page 73 The NTP Services panel is the second panel on the left hand side of the NTP screen NTP ON OFF This switch enables and disables NTP See Dis Enabling NTP on the next...

Страница 84: ...p 2 In the NTP Services panel set the ON OFF toggle switch to OFF 3 A notification window will confirm the status change 4 In the NTP Services panel set the ON OFF toggle switch to ON again Changes ma...

Страница 85: ...rs no broadcasting and no access restrictions External queries or modifications are not permitted while generally all IPv4 and IPv6 client connections are allowed To restore VelaSync to its default NT...

Страница 86: ...l inevitably result in an undesired time error in your NTP clients To change the system timescale VelaSync will use for its NTP output and other outputs 1 Navigate to MANAGEMENT OTHER Time Management...

Страница 87: ...other NTP Servers at the same Stratum level If VelaSync is configured to obtain time from other NTP Servers at the same Stratum level i e NTP Peers but is currently using a different input reference a...

Страница 88: ...n be accessed via MANAGEMENT NETWORK NTP Setup Information provided in the NTP Servers and NTP Peers panels The following columns are used to break down the status information for recognized NTP Serve...

Страница 89: ...ng AUTH STATUS Indicates if the selected reference is using MD5 authentication None indicates authentication not being used LAST The number of seconds that have expired since this reference was last p...

Страница 90: ...dress Note that System servers cannot be edited or deleted To ADD a new server click the PLUS icon in the upper right hand corner and proceed to the next step Note In order for other NTP Servers to be...

Страница 91: ...r to public NTP configuration documentation Mark as Preferred Click here to make this server the preferred server For more information see NTP Timing System Reference Selection and Preference page 1 N...

Страница 92: ...the Minimum and Maximum Poll rate for NTP packets can be configured Enable Symmetric Key Click the checkbox to enable disable Symmetric Key See also Configuring NTP Symmetric Keys on the facing page N...

Страница 93: ...with NTP for authentication pur poses VelaSync supports authenticated NTP packets using an MD5 authenticator This feature does not encrypt the time packets but attaches an authenticator which consists...

Страница 94: ...ll display Fill in or edit the fields Trusted checkbox Check this box to use MD5 authentication with trusted key ID Note To use the MD5 authentication with trusted key ID both the NTP client and the V...

Страница 95: ...Submit button The changes will be reflected in the table of the NTP Sym metric Keys window which is displayed after clicking the Submit button 6 The key s you have set up will now appear as options i...

Страница 96: ...both VelaSync and any network client with which VelaSync is to communicate Only those keys for which the Trusted box has been checked will appear in the dropdown menus on the NTP Refer ences screen 2...

Страница 97: ...ose either Allow or Deny If you select Deny the configured portion of the network will not have NTP access to VelaSync but the rest of the network will have access to VelaSync If you select allow the...

Страница 98: ...pectracom Technical Sup port 2 11 Configuring PTP Precision Time Protocol PTP is a time protocol that can be used to synchronize com puters on an Ethernet network VelaSync supports PTP Version 1 and 2...

Страница 99: ...e 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 configur...

Страница 100: ...s received by the PTP Clocks are then filtered from the Domain Number the Port Iden tity Clock Identity Port Number of the transmitter When the Master Clock is set in Multicast mode this module will d...

Страница 101: ...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 Default is...

Страница 102: ...2 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 1...

Страница 103: ...e 2 12 PRISMA Compliance Setup VelaSync can send information on well it is synchronized to a PRISMA Compliance Server This requires the use of a terminal emulator for information on the setup and use...

Страница 104: ...the week 1 7 1 standing for Monday year 1900 3000 s c h e d u l i n g e x a m p l e s 0 0 would run every day at midnight 0 12 13 6 would run on June 13th of every year at noon for more examples see...

Страница 105: ...me refers not only to the concept of VelaSync s System Time but also to reference configuration as well as distribution of time and frequency The following topics are included in this Chapter 3 1 The...

Страница 106: ...ight corner This window is used to select the time scale and to manually set a user time if so required See System Time on page 96 Offsets panel The Timescales UTC TAI and the GPS supplied time are of...

Страница 107: ...all of the available time of day outputs such as NTP time stamps time stamps in the log entries ASCII data outputs etc By default the System Time is synchronized to VelaSync s input references such a...

Страница 108: ...battery backed RTC time can be used as System Time until an external ref erence become available 3 2 1 1 Configuring the System Time To configure the System Time 1 Navigate to MANAGEMENT OTHER Time M...

Страница 109: ...in the GPS ground control stations The UTC GPS offset as of 2 Apr 2019 is 18 seconds For more information on Timescales see Timescales below 4 If you want to override the system time with a manually s...

Страница 110: ...offset value in order for the time on the output reference to be cor rect Some references like GNSS provide the timescale offset to the system In the event that the input reference being used does not...

Страница 111: ...se this functionality see The User User Refer ence on page 116 Note If synchronization to UTC is NOT required it is advisable to set a time in the past or future so as to avoid users inadvertently con...

Страница 112: ...u are using does not provide a YEAR field Synchronize to Battery Backed Time on Startup See Using Battery Backed Time on Startup on the facing page 4 Click Submit at the precise moment desired 5 Navig...

Страница 113: ...erred to as the time maintained by the integrated Real Time Clock RTC This will result in VelaSync providing a System Time before one of the external references becomes available and valid This will h...

Страница 114: ...he battery backed RTC to drift i e the battery backed time will become increasingly inaccurate The battery used for the RTC is designed to last for the lifetime of the product Distributing battery bac...

Страница 115: ...display Enter the desired GPS Offset in seconds and click Submit Note Since the GPS Offset and the TAI Offset have a fixed rela tionship only the GPS Offset can be set If only the TAI offset is known...

Страница 116: ...nd Local timescales Leap Seconds do NOT affect the GPS and TAI timescales However a Leap Second event will change the GPS to UTC and TAI to UTC time offsets When a Leap Second occurs VelaSync will aut...

Страница 117: ...NOT indicate Leap Seconds The Sync state indicates Leap Seconds by indicating sync can be 00b 01b or 10b PTP Packets provide leap indication with a 12 hour notification window Some IRIG formats provid...

Страница 118: ...ained this information auto matically from the GPS data stream b A leap second had been configured previously by a user via the Edit Leap Second window 2 To access the Edit Leap Second information win...

Страница 119: ...OTHER Time Management 2 Click the PLUS icon in the Local Clocks panel in the Time Management screen 3 The Local Clock pop up window will display 4 Enter a Name for your local clock The name must be b...

Страница 120: ...l clock will always be standard time DST options will appear in the Local Clock window 6 Set DST Rules by Region Check this box to apply regional DST rules A regions drop down menu with the following...

Страница 121: ...ized to an input ref erence e g IRIG input VelaSync needs to know the timescale of the input time Local Timescale or UTC Timescale in order to provide proper internal conversion from one Timescale to...

Страница 122: ...he changes made and click the Submit button The unit will display the status of the change 3 2 4 3 DST and UTC GMT Neither UTC nor GMT ever change to Daylight Savings Time DST However some of the coun...

Страница 123: ...lable or invalid The priority order you assign to your available references typically is a function of their accuracy and reliability Note The References shown on your screen may look different from t...

Страница 124: ...and 16 being the lowest priority The highest priority reference that is available and valid is the reference that is selected Time The reference selected to provide the necessary Time reference 1PPS T...

Страница 125: ...eferences Enable disable references Reorder the priority of VelaSync s references c The Reference Status panel The Reference Status panel provides a real time indicator of the status of the VelaSync s...

Страница 126: ...s screen via MANAGEMENT OTHER Reference Priority 2 In the Configure Reference Priorities table click the Delete button on the right hand side of the entry you wish to delete 3 In the pop up window tha...

Страница 127: ...button 3 3 1 2 The Local System Reference The Local System reference is a Self reference i e VelaSync uses itself as an input ref erence for Time or as a 1PPS reference The Local System is a unique in...

Страница 128: ...Holdover Use case Local System 1PPS The Local System reference can also be used for 1PPS This allows VelaSync to operate using an external ToD for time while generating 1PPS from its own internal osc...

Страница 129: ...eference with a non User 1PPS reference or vice versa is not a typical use case Use the Local System reference instead see The Local System Reference on page 115 Built in safety barrier In order to va...

Страница 130: ...ference is under 1 second NTP will remain in sync and will slew over a period of time to the new reference time 3 3 1 4 Reference Priorities EXAMPLES Example 1 GNSS as primary reference IRIG as backup...

Страница 131: ...available input NTP Stratum 2 oper ation In this use case the objective is to have NTP provided by another NTP server as the only available reference input i e the unit to be configured is operated as...

Страница 132: ...he User User reference to a place in the table that has a priority lower than the references the User User reference will be backing up Make sure the Enabled checkbox is selected 2 With User User enab...

Страница 133: ...ll give this reference the highest priority In the Time field select Local System In the PPS field select GPS Check the Enabled checkbox 2 Confirm that the first reference in the Reference Priority ta...

Страница 134: ...r active references against the System Ontime Point The reading is updated every 30 seconds This Reference Phase Offset Data is plotted over time abscissa in the Reference Mon itor panel in the center...

Страница 135: ...are experiencing poor signal reception To access the GNSS Receiver settings 1 Navigate to INTERFACES REFERENCES GNSS 0 Note Typically there will be only one GNSS reference numbered 0 2 The GNSS 0 stat...

Страница 136: ...rence 2 Click the INFO button next to GNSS 0 The GNSS 0 status window will display it contains two tabs explained in detail below Main default and Satellite Data The Main tab 124 CHAPTER 3 VelaSync 12...

Страница 137: ...in tab the following information will display Note Detailed information on the different parameters can be found in the subsequent GNSS topics 3 3 Managing References CHAPTER 3 VelaSync 1232 User Manu...

Страница 138: ...mains at 1 if no satellites are in view COMPLETE green Number of Tracked Satellites The number of satellites currently being tracked Offset As set by the user in nanoseconds Antenna Sense OK green Ope...

Страница 139: ...llite number and signal strength Letter Symbol GNSS Constellation G GPS R GLONASS E Galileo J QZSS C BeiDou I IRNSS The Satellite Data tab Under the Satellite Data tab there are two graphs Number of S...

Страница 140: ...r Model Note All VelaSync models are currently shipped with a u blox M8T Receiver To determine which GNSS receiver model is installed in a VelaSync unit 1 Navigate to TOOLS SYSTEM Upgrade Backup 2 In...

Страница 141: ...LONASS Beidou X X X X X X X X X X X X X X X X X X Note The augmentation systems SBAS and QZSS can be enabled only if GPS operation is configured 3 3 3 3 Selecting a GNSS Receiver Mode When connected t...

Страница 142: ...he desired Receiver Mode and click Submit GNSS Receiver Modes The receiver modes are Standard GNSS Receiver Mode The default GNSS receiver mode is the Standard Mode It is the most accurate and hence t...

Страница 143: ...g urban canyons In Single Satellite Mode the GNSS receiver will be considered a valid input reference as long as a the receiver was able to complete a survey during a time window with good satellite r...

Страница 144: ...eiver Mode on page 129 To change review the GNSS Receiver Dynamics 1 Navigate to INTERFACES REFERENCES GNSS 0 2 Under the Main tab of the GNSS 0 status window the line item Receiver Dynamics will indi...

Страница 145: ...ic position is required to calculate a precise system time from the GNSS reference During a GNSS survey the position will be iteratively recalculated while gradually increas ing the position accuracy...

Страница 146: ...ed and displayed in nanoseconds By setting the correct Offset value you can offset the system s on time point by the Off set value to compensate for the antenna and in line amplifier delays Under typi...

Страница 147: ...nds 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 and then enter this value into the Offset field E x a m p l e s o f L...

Страница 148: ...er 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 posi...

Страница 149: ...GNSS position 1 Disconnect the GNSS antenna from the VelaSync unit this is required only when sanitizing the unit 2 Navigate to Interfaces References GNSS Reference 3 Click on the GEAR button next to...

Страница 150: ...ding 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 curre...

Страница 151: ...e Maps 2 In Google Maps locate your building and the location of your antenna 3 Right click on the location Select What s here At the bottom you will see a card with the coordinates 4 Take note of you...

Страница 152: ...example you can determine if you want GLONASS satellites to be tracked besides GPS Selecting GNSS Constellations Your VelaSync is capable of tracking multiple GNSS constellations simultaneously To ver...

Страница 153: ...is capable of receiving multiple GNSS constellations simultaneously the table below shows which combinations are possible GPS Galileo GLONASS BeiDou X X X X X X X X X X X X X X X X X X Note The augme...

Страница 154: ...onstellation and while VelaSync allows you to enable QZSS by itself it is recommended to use it in combination with GPS Determining Which GNSS Satellites Are Received To see which GNSS satellites your...

Страница 155: ...te signals This may lead to a significantly shorter time for VelaSync to deliver a GNSS based timing signal upon a cold start of the unit A GPS client The A GPS client is used to send assistance data...

Страница 156: ...uired Enable A GPS Client This feature will schedule assistance data to be collected and updated every hour On star tup if data is present it will be sent to the receiver Apply A GPS Data If this opti...

Страница 157: ...leads to a quicker fix It is recommended to enter the position as accurately as possible For more information see Manually Setting the GNSS Position on page 138 Note When manually setting a position...

Страница 158: ...fied Under Record Duration you can determine after how many days the history files will be overwritten Note YUMA files almanac data are valid for day The files can be remotely accessed via the pub pat...

Страница 159: ...cking on Status and confirming that the indicator lamp for Server A GPS Status is green ENABLED The Server A GPS Data indicator will be green if the RINEX server is running and the GPS receiver is val...

Страница 160: ...more stable the oscil lator is without an external reference the longer this holdover period can be and have it still maintain very accurate outputs The benefit of Holdover is that time synchronizati...

Страница 161: ...ast one valid Time and 1PPS input reference becomes available again While in this state NTP will be Stratum 15 and outputs will not be usable If the input references are restored and then lost or decl...

Страница 162: ...eally based on the type of oscillator installed in a unit and what the typical accuracy requirements are for the NTP clients The longer it can run in Holdover mode before it expires the longer it can...

Страница 163: ...e avail able TCXO OCXO Low Phase Noise OCXO Rubidium Low Phase Noise Rubidium After 4 hours 12 s 1 s 0 5 s 0 2 s 0 2 s After 24 hours 450 s 25 s 10 s 1 s 1 s After 7 days 3150 s 3 1 ms 175 s 70 s 7 s...

Страница 164: ...ater the Holdover timer starts again with its full value If its set to one week in this case it then gets another week of Holdover operation before NTP goes to Stratum 16 if GPS remained unavailable f...

Страница 165: ...elaSync may become an NTP Stratum 2 or higher reference If so configured VelaSync can use a reference such as an NTP daemon referred to as a Host Reference If the Host Reference becomes active it will...

Страница 166: ...s 2 hours For more information on holdover timeouts see Typical Holdover lengths in seconds on page 151 For additional information on holdover see What is Holdover Timeout on page 149 Phase Error Limi...

Страница 167: ...ed to the 1PPS The estimated error is referred to as the 1PPS Phase error TFOM values are ranges of these phase errors The larger the phase error estimate the larger the TFOM value will be For example...

Страница 168: ...is now exceeding MaxTFOM This condition will cause a 1PPS out of specification alarm to be asserted and the oscillator disciplining will change in order to speed up the alignment of the system 1PPS to...

Страница 169: ...time in ns or ms of the internal 1PPSs phase error with respect to the selected input reference Long holdover peri ods or an input reference with excessive jitter will cause the phase error to be hig...

Страница 170: ...ning If this estimated error is too large it could adversely affect the per formance of oscillator disciplining The available TFOM range is 1 through 15 Max TFOM for Sync Value as set under Configurin...

Страница 171: ...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...

Страница 172: ...To delete the log file click the TRASH CAN icon and confirm 160 CHAPTER 3 VelaSync 1232 User Manual Rev 4 3 4 Managing the Oscillator...

Страница 173: ...included in this Chapter 4 1 Issuing the HALT Command Before Removing Power 162 4 2 Rebooting the System 163 4 3 Hardware Tasks 163 4 4 Notifications 166 4 5 Managing Users and Security 175 4 6 Misce...

Страница 174: ...the Web UI 1 Navigate to TOOLS SYSTEM Reboot Halt 2 The Reboot Halt window will display Select the Shutdown the Unit checkbox 3 Click Submit 4 Wait 30 seconds after entering the HALT command before di...

Страница 175: ...asks 4 3 1 Replacing a Power Supply For redundancy purposes the server is equipped with two hot swap power supply mod ules Should either of the modules fail the other will take the full load and suppl...

Страница 176: ...ou hear a click 5 Plug the AC power cord back into the new power supply Note For additional information on the power supplies see https www supermicro com manuals superserver 1U MNL 1771 pdf Chapter 2...

Страница 177: ...requires cleaning or replacement Figure 4 2 Removing the front bezel Removing the HDD carrier 1 The HDDs are installed in carriers To release a carrier press down its red release but ton next to the d...

Страница 178: ...are generated One event occurs in the transition to a spe cified state and then another event occurs when transitioning back to the original state Examples of these are losing sync and then regaining...

Страница 179: ...s prevent the alarm Enable SNMP to send out an SNMP trap Send an email to the address specified in the corresponding Email Address column 4 4 1 Configuring Notifications To configure Notifications 1 N...

Страница 180: ...see below and click Submit 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...

Страница 181: ...e configured For example a mask alarm can be set for an In Sync event and a Not in Sync event but not for an In Holdover event 4 4 2 Notification Event Types The following types of events can be used...

Страница 182: ...eceiver This is done by setting the minimum number of satellites the receiver can track for a set time before an alarm is triggered If both conditions are met i e the reception quality falls below the...

Страница 183: ...ber 4 In the Duration Below Threshold s fields enter the time in seconds that the sys tem must be below the threshold set in the Minimum Satellites field before an alarm is triggered The alarm will be...

Страница 184: ...more information on SNMP see SNMP on page 57 4 4 5 Setting Up Email Notifications The Email Setup window provides a means to configure VelaSync with the necessary set tings to interface it with Exchan...

Страница 185: ...for your particular email server such as the user name and password for your Email server E x a m p l e I S M T P i n t e r f a c e t o M S E x c h a n g e set smtp outlook office365 com set smtp auth...

Страница 186: ...Click the Submit button at the bottom of the window 6 To test your settings In the Test Email Address field enter an email address Click the Send Test Email button A notification that your email has...

Страница 187: ...in accounts to the pre installed admin istrator account spadmin factory The default factory account with the username spfactory is meant to provide access to Spectracom technical support personnel You...

Страница 188: ...nts can view and modify all settings in these pages can view edit GNSS receiver Outputs and Option Cards MANAGEMENT Menu Network While the toggle switches in the Network Services panel are displayed u...

Страница 189: ...s user can view only the listed logs Upgrade Backup user cannot perform any updates Reboot Halt user cannot reboot shutdown halt the unit 4 5 1 3 Rules for Usernames Length Usernames can be between 3...

Страница 190: ...ersonnel While the spfactory account can be deleted by an administrator it should be noted that this may potentially limit remotely provided technical sup port User accounts can be created to have eit...

Страница 191: ...the user to belong to user or admin The user permission level assigns permission to access and change all settings with the following exceptions that are limited to the admin accounts Changing networ...

Страница 192: ...roup select the group from the drop down menu For more information see also Managing Passwords below 4 5 2 Managing Passwords Caution For security reasons it is advisable to change the default cre den...

Страница 193: ...in Lost Password on the next page 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 d...

Страница 194: ...ory default value of admin123 Resetting the spadmin account password does not reset any user created account pass words This process only resets the spadmin account password Any user with administrato...

Страница 195: ...password via the serial port or SSH 1 Connect a PC to the port and log in using an account with admin group rights such as the spadmin account 2 Type resetpw Enter The spadmin account password is now...

Страница 196: ...g off and then log back in again This setting affects all users not just the user changing the value 4 6 Miscellanous Typical Configuration Tasks 4 6 1 REST API Configuration REST Representational Sta...

Страница 197: ...e box Enable Custom Banner 4 In the Plain Text Banner text box type in your custom text Note The Plain Text Banner is used to create a message for all inter active login interfaces Web UI telnet SSH F...

Страница 198: ...nner on the actual login page 4 6 3 Show Clock Instead of the Web UI a large digital clock can be displayed on your computer screen Next to the system status the screen clock will display the UTC time...

Страница 199: ...details about using the Spectracom PresenTense NTP client software 4 7 Quality Management 4 7 1 System Monitoring 4 7 1 1 Status Monitoring via the Web UI status information can be accessed via the Ve...

Страница 200: ...field Sync Indicates whether VelaSync is synchronized to its selected input ref erences Green indicates VelaSync is currently synchronized to its references Orange indicates VelaSync is not currently...

Страница 201: ...urrently being disciplined steered to an input reference 1PPS Phase Error An internal measurement in nanoseconds of the internal 1PPSs phase error with respect to the selected input reference if the i...

Страница 202: ...and this number is 70 or higher it is recommended to clear logs and stats in order to free up memory space Navigate to TOOLS SYSTEM Upgrade Backup and click the cor responding buttons in the lower lef...

Страница 203: ...wnload monitoring data In the Status panel on the left information pertaining to the given Ethernet port is dis played including throughput statistics and error statistics The Mode field indicates whi...

Страница 204: ...usually 00 See Leap Second Alert Notification on page 105 Delay ms The measured one way delay between VelaSync and its selec ted reference Offset ms Displays the configured 1PPS offset values Jitter m...

Страница 205: ...ed time in ns or ms of the internal 1PPSs phase error with respect to the selected input reference Long holdover peri ods or an input reference with excessive jitter will cause the phase error to be h...

Страница 206: ...lining If this estimated error is too large it could adversely affect the per formance of oscillator disciplining The available TFOM range is 1 through 15 Max TFOM for Sync Value as set under Configur...

Страница 207: ...to facilitate remote diagnosis Logs stored internally are being kept automatically while the storage of log files in a remote location has to be set up by the user For each type of log four 75 KB file...

Страница 208: ...nization E X A M P L E GNSS is the highest priority reference with IRIG input being a lower priority VelaSync is synced to GNSS and so GNSS is the selected reference The GNSS antenna is disconnected a...

Страница 209: ...nput references were not restored before the Holdover period expired Time Sync alarm is asserted In Sync VelaSync is synchronized to its Time and 1PPS inputs Not In Sync VelaSync is not synchronized t...

Страница 210: ...S reception may be displayed as cyclic in nature A cyclic 12 hour pattern of decreased GNSS reception typically indicates that the GNSS antenna has an obstructed view of the horizon The GNSS satellite...

Страница 211: ...wer than 3600 about every 12 hours the issue is likely caused by the GNSS antenna having an obstructed view of the sky E x a m p l e G P S Q u a l i f i c a t i o n L o g E n t r y 6 151 7 1894 8 480...

Страница 212: ...that apply to all logs To access the Logs Screen 1 Navigate to MANAGEMENT OTHER Log Configuration 2 The Logs screen will appear It is divided into two panels The Logs Actions panel The Actions panel...

Страница 213: ...the bundled logs to remotely investigate a technical concern To save bundle and download all logs 1 Navigate to MANAGEMENT OTHER Log Configuration 2 On the left side of the screen in the Actions pane...

Страница 214: ...lining 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 typ ically...

Страница 215: ...eting a remote log server 1 Navigate to MANAGEMENT OTHER Log Configuration 2 In the Remote Log Server panel locate the remote server you wish to change or delete 3 Choose the MINUS button to delete th...

Страница 216: ...e Spectracom website If you register your product you will be notified of software updates To carry out a software update 1 In the Web UI navigate to Tools Upgrade Backup 2 Determine your System softw...

Страница 217: ...de and remove the uploaded software bundle from the system Perform update Perform the software upgrade Perform clean update Factory settings will be applied during the upgrade any custom settings you...

Страница 218: ...Note In the event that the update failed see Troubleshooting Software Update on page 214 206 CHAPTER 4 VelaSync 1232 User Manual Rev 4 4 8 Updates and Licenses...

Страница 219: ...fications 220 5 4 Choosing a GNSS Antenna Location 233 5 5 Maintenance and Service 235 5 6 Product Registration 235 5 7 Links to External Information 236 5 8 Technical Support 237 5 9 Return Shipments...

Страница 220: ...satellites 1st threshold The GNSS receiver has been tracking less than the minimum number of satellites for too long of a duration Refer to Troubleshooting GNSS Reception on page 212 for information...

Страница 221: ...nical Sup port Select TOOLS Upgrade Backup The screen displayed will provide information on System configuration Disk status memory status Software versions and Recent log entries 5 1 2 1 System Troub...

Страница 222: ...laSync and other end of network cable VelaSync ICMP test is passing VelaSync is connected to PC via Ethernet con nection 1 Disconnect VelaSync s network cable and ping its assigned address to ensure n...

Страница 223: ...antenna installation if applicable See Troubleshoot ing GNSS Reception on the next page MANAGEMENT NTP Setup page NTP Status Sum mary panel Stratum row Stratum 15 NTP is not syn chronized to its avai...

Страница 224: ...input reference Many factors can prevent the ability for the GNSS receiver to be able to track the minimum number of satellites With the GNSS antenna installed outdoors with a good view of the sky the...

Страница 225: ...window on HOME screen of Web UI lists RAID fail ure One of the two RAID harddisks is defect Replace harddisk See Removing Installing a Hard Disk Drive on page 164 Note Replacement harddisks are avail...

Страница 226: ...ort 123 NTP traffic for example 4 NTP in VelaSync must be in sync and at a higher Stratum level than Stratum 15 such as Stratum 1 or 2 for example This requires VelaSync to be either synced to its inp...

Страница 227: ...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 several thi...

Страница 228: ...ly typed commands e Commands need to be typed in all lower case letters f Where eth0 is the base network port and eth1 and higher are used with the optional Gigabit Ethernet module for multiple networ...

Страница 229: ...the GPSD service port gpsinfo Applicable to SAASM equipped VelaSync units only gpsloc Displays GNSS latitude longitude and antenna height gpsmdl Displays the GNSS Manufacturer and Model gpssat Displa...

Страница 230: ...etwork status netnum Displays the number of general purpose network interfaces net4 Displays IPv4 network status net6 Displays IPv6 network status options Displays configured options installed if any...

Страница 231: ...min123 routes4 Displays the current IPv4 routing table s routes6 Displays the current IPv6 routing table s rt4add Adds an IPv4 static route rt4del Deletes an IPv4 static route rt4get Displays the conf...

Страница 232: ...Displays the installed main VelaSync and timing system software versions yearget Displays the current year yearset Used to set the current year zeroize Applicable to SAASM equipped VelaSync units only...

Страница 233: ...ters and power utilities Table 5 3 Available IRIG output signals Format Encoding Modulation Carrier Coded Expressions Bit rate Time Frame Interval IRIG A IRIG A A000 DCLS N A BCDTOY CF and SBS 1000 pp...

Страница 234: ...LS N A BCDTOY 100 pps 1 sec IRIG B B003 DCLS N A BCDTOY SBS 100 pps 1 sec IRIG B B004 DCLS N A BCDTOY BCDYEAR CF and SBS 100 pps 1 sec IRIG B B005 DCLS N A BCDTOY BCDYEAR and CF 100 pps 1 sec IRIG B B...

Страница 235: ...BCDYEAR and SBS 10 pps 1 sec IRIG E E110 AM 100 Hz BCDTOY CF and SBS 10 pps 1 sec IRIG E E111 AM 100 Hz BCDTOY CF 10 pps 1 sec IRIG E E112 AM 100 Hz BCDTOY 10 pps 1 sec IRIG E E113 AM 100 Hz BCDTOY SB...

Страница 236: ...AM 1msec UNKNOWN 100 pps 1 sec NASA 36 N A DCLS 10 msec UNKNOWN 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...

Страница 237: ...l 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 the reciprocal of the bite rate VelaSync can provide IRIG A IRIG B IRIG E and IRIG G code i...

Страница 238: ...elements P0 and P5 7 for seconds 7 for minutes 6 for hours and 10 for days until the code word is complete An index marker occurs between decimal digits in each group to provide sep aration for visua...

Страница 239: ...is the pulse leading edge Index marker Binary 0 or uncoded element 2 millisecond duration Code digit Binary 1 5 millisecond duration Position identifier 8 millisecond duration Reference marker 1 per s...

Страница 240: ...ce 74 23 Space 75 24 Space 76 25 Space 77 26 Space 78 27 Space 5 3 4 IRIG E Output The IRIG E code contains the Binary Coded Decimal BCD time of year and Control Func tions The figure IRIG E Time Code...

Страница 241: ...me syn chronization 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...

Страница 242: ...erence point for the succeeding time code 1PPS position identifiers P0 P1 P9 80 ms duration occur 0 1 s before 1PPS on time and refer to the leading edge of the suc ceeding element The time code word...

Страница 243: ...during any specified number of time frames Each control element is iden tified on the Control Function Field Table Table 5 5 IRIG E control function field BIT No CF ELEMENT No FUNCTION 50 1 SPACE 51 2...

Страница 244: ...ENTIFIER 80 28 SBS 20 81 29 SBS 21 82 30 SBS 22 83 31 SBS 23 84 32 SBS 24 85 33 SBS 25 86 34 SBS 26 87 35 SBS 27 88 36 SBS 28 89 PID P9 POSITION IDENTIFIER 90 37 SBS 29 91 38 SBS 210 92 39 SBS 211 93...

Страница 245: ...IRIG A 200 ns IRIG B 800 ns IRIG G 200 ns IRIG NASA 800 ns IRIG E 1 5 s 5 4 Choosing a GNSS Antenna Location Listed below are requirements for selecting an optimal installation location for your GNSS...

Страница 246: ...lic materials close to the antenna can create shadows which can shield the antenna from receiving in that particular direction Separation between multiple antennas If the antennas are installed too cl...

Страница 247: ...also available from Andrews Cor poration USA phone 1 800 255 1479 5 5 Maintenance and Service We recommend to clean the front bezel filter regularly Remove the front bezel by unlocking it with the key...

Страница 248: ...s to External Information To learn more about the following hardware related subjects see the Server OEM User s Manual at https www supermicro com manuals superserver 1U MNL 1771 pdf System safety Ser...

Страница 249: ...Spectracom operates globally and has offices in several locations around the world Our main offices are listed below Table 5 6 Spectracom contact information Country Location Phone Address France Les...

Страница 250: ...plies to most of the Free Software Foundation s software and to any other program whose authors commit to using it Some other Free Software Foundation software is covered by the GNU Lesser General Pub...

Страница 251: ...act of running the Program is not restricted and the output from the Program is covered only if its contents constitute a work based on the Program independent of having been made by running the Prog...

Страница 252: ...physically performing source distribution a complete machine readable copy of the corresponding source code to be distributed under the terms of Sections 1 and 2 above on a medium customarily used fo...

Страница 253: ...t is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims this section has the sole purpose of protecting the...

Страница 254: ...OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES END OF TERMS AND CONDITIONS 5 10 2 OpenSSH This fi...

Страница 255: ...HANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU SHOULD THE PROGRAM PROVE DEFECTIVE YOU ASSUME THE COST OF ALL NECESSARY SE...

Страница 256: ...ER 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 POSSIB...

Страница 257: ...IS SOFTWARE IS PROVIDED BY THE AUTHOR 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 DISCLA...

Страница 258: ...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 AD...

Страница 259: ...The license and distribution terms for any publically available version or derivative of this code cannot be changed i e this code cannot simply be copied and put under another distribution license i...

Страница 260: ...BSD Portions of this code are copyright c 2001 2003 Cambridge Broadband Ltd All rights reserved Redistribution and use in source and binary forms with or without modification are permitted provided t...

Страница 261: ...Copyright c 2003 2004 Sparta Inc All rights reserved Redistribution and use in source and binary forms with or without modification are permitted provided that the following conditions are met Redistr...

Страница 262: ...3 Estimated Phase Drifts 151 Table 3 4 Typical Holdover lengths in seconds 151 Table 3 5 TFOM to ETE conversion 155 Table 5 1 Troubleshooting network connection issues 210 Table 5 2 Troubleshooting u...

Страница 263: ...ng the front bezel 165 Figure 4 3 Removing a HDD carrier 165 Figure 4 4 Login banner example 185 Figure 5 1 IRIG B time code description 225 Figure 5 2 IRIG E time code description 230 5 13 Document R...

Страница 264: ...BLANK PAGE 252 VelaSync 1232 User Manual...

Страница 265: ...Bezel removing 165 235 BIOS error beep codes 236 BIOS setup 236 Breakout Cable Basic 37 Premium 39 Breakout cable basic 37 Browser support 209 C Cable delay 135 Chassis 236 Chipset 236 CLI 216 Comman...

Страница 266: ...Host disciplining 153 Host keys SSH 51 I IP address configuration 32 IP address static lease 47 IP addresses default 47 IPMI 50 IPv4 47 IRIG output accuracy 233 Standards 220 IRIG Carrier Frequencies...

Страница 267: ...NTP Peer 80 Preferred NTP Server 79 Primary Navigation menu 13 PRISMA Compliance 91 Private keys SSH 53 Public keys SSH 54 R Rack installation 25 Rack mounting 236 RAID 164 Real Time Clock 101 Rear p...

Страница 268: ...IP address 47 Subnet mask values 35 Subnet default 47 Summer Time 108 Survey GNSS 130 133 136 Symmetric keys 70 Synchronizing Windows computers 187 System interface 236 System specifications 236 Syst...

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