background image

NTS 01

NETWORK TIME SERVER

User Manual

1st Edition: Mar 2006

Summary of Contents for NTS 01

Page 1: ...NTS 01 NETWORK TIME SERVER User Manual 1st Edition Mar 2006 ...

Page 2: ...entification 8 4 OPERATION 9 4 1 Time Display 9 4 2 GPS Satellite Tracking Status 11 4 3 Front Panel LEDs 12 4 4 Time Server Ports NTS1 NTS5 13 5 NTS01 CONFIGURATION SOFTWARE 14 5 1 General 14 5 2 Installation 14 5 3 Clock Setup Page 15 5 4 Time Servers Page 18 5 5 GPS Set Up Page 22 6 TIME SERVER PORT NTS CONFIGURATION OVER ETHERNET 24 7 FACTORY HARDWARE FIRMWARE OPTIONS 25 7 1 Opt 1 NTS01E Exten...

Page 3: ...Port is independently configurable and provides status reporting over Ethernet using SNMP Each NTS01 1U rack includes a sync status relay to allow integration with other station alarm monitoring functions via RTU Each unit also includes an expansion facility both input and output ports for IRIG B code enabling multiple racks of NTS01 units to all share a single GPS antenna When connected in this w...

Page 4: ...e either the NTS01E or the Multiport then the unit is supplied already fitted into the 19 rack mounting front plate together with the expansion module 2 3 GPS Antenna Mounting Detailed antenna mounting instructions are contained in Appendix A 2 p28 The antenna should be located in a position with as clear a view of the sky as possible over as wide an angle as possible The antenna should also be mo...

Page 5: ...tions Check the option label on the unit base for power supply voltage ratings Ant The antenna input SMA jack located above P1 provides an interface for an external active antenna via low loss coaxial cable of 50Ω impedance 3V DC is supplied Imax 100mA to power the high gain active GPS antenna supplied with the NTS01 kit Care should be taken to ensure that the connector is not cross threaded when ...

Page 6: ... Pin 0V provides an earth for the shield of a 120ohm impedance twisted pair data cable Maximum wire size for mating connector is 1mm2 The precision on the IRIG B timing pulses both leading and trailing edges from this port is typically to within 100nS of UTC Note that a TTL format signal earth referenced can be obtained if required by connecting between and 0V instead of between and P6 Sync status...

Page 7: ... the other can be specified but not both P12 P15 Part of the Multiport option See Fig 4 below these outputs feature IRIG B code and are individually switchable between unmodulated B002 and AM Modulated B120 forms of IRIG B In Unmodulated mode each output will source and sink 20mA In AM mode the output is 120ohm 9v p p When operating these outputs in AM mode the signal lines must be correctly termi...

Page 8: ...unt 19 face plate with cut out for NTS01 display 1U high Each NTS01 unit is normally supplied complete with antenna antenna mount antenna cable and 1U 19 rack mount hardware Shipping weight of the complete NTS01 kit is 4 8Kg If the NTS01E extension unit is included shipping weight is 5 6Kg and the unit is shipped already assembled in the rack mount 3 3 Identification Each NTS01 unit is shipped wit...

Page 9: ...power up Fig 5 a The display then automatically changes to the operating default Fig 5 b The top line of screen b announces that the time standard is UTC formerly known as GMT and includes the current date The day of year and time of day are displayed on the bottom line The three character field at the right of the bottom line is a status field See 4 2 following for the definition of each characte...

Page 10: ...__________________________________________________________ Page 10 of 31 Tekron International Ltd PO Box 31 285 Lower Hutt 6009 New Zealand tel 64 4 566 7722 fax 64 4 569 9272 email support tekroninternational com The NTS outputs always operate with UTC time ...

Page 11: ... to a non zero value to show that the stored almanac is now valid The display example in fig5 b indicates that 8 satellites are present in the hemisphere of sky overhead 2nd character Hexadecimal1 number range of values is 0 C or decimal range 0 12 This shows the number of satellites currently being used to compute the time solution 0 indicates that no updated time solution is available the out of...

Page 12: ...ynchronising to IRIG B input signal on P4 this flash pattern indicates that the IRIG B signal is not present or is unreadable Warning Status 2 GPS LED flashing with a two flash burst pattern repeating each second The unit is searching the sky for satellites to begin the sync process In Slave mode synchronising to IRIG B input signal on P4 this flash pattern indicates that the incoming signal has b...

Page 13: ... system Alternatively and for earlier Windows Versions a very simple and effective client Dimension 4 is included with the NTS01 package 3 licenses are provided Additional licenses may be purchased from Thinking Man Software www thinkman com After installing Dimension 4 on the PC to be synched add the IP address of the Time Server Port to Dimension 4 s list of Time Servers and select it Dimension ...

Page 14: ...ron and copy the files NTS exe and NTS hlp to it b Optionally create a shortcut to NTS exe and place the shortcut where convenient c Connect the NTS01 unit using the supplied USB cable NTS01 must be powered d Run the configuration utility by clicking on NTS exe or the shortcut When an NTS01 unit is first connected via a USB port Windows will identify the NTS01 as new hardware Provided that the pro...

Page 15: ...l that will pass before the NTS01 releases the sync relay and indicates loss of sync In areas with poor GPS coverage there may be rare times when no satellites can be tracked The Sync Hold feature allows the NTS01 to maintain its outputs under these conditions Accuracy is maintained to within a few micro seconds for black out periods of around a minute and to within 200uS for periods up to the max...

Page 16: ...ors being introduced by multi path signals from low elevation satellites typically caused by reflections off land based obstacles but narrows the overall field of view When the NTS01 is operating in Slave mode synched to incoming IRIG B on P4 this parameter has no meaning and is shown greyed out Test Mode Test Mode forces NTS01 to provide all outputs as if it is in sync at all times even if there ...

Page 17: ...ne the number of hours and in rare cases minutes that the local time differs from UTC time A positive offset means that the local time is ahead of UTC If automatic Daylight Saving Time operation is not required both of the offsets should be set to the same value The time that results is the time that is used in the LCD display Choose City The Choose City button provides a convenient way of selecti...

Page 18: ... five NTS s supported by the NTS01 NTS s 3 5 are found on the NTS01E expansion unit The current Network Addressing information for each NTS is shown together with the installed firmware version and date Non equipped NTS panels are labelled accordingly It is beyond the scope of this document to discuss TCP IP addressing concepts in detail The configuration information that follows assumes that the ...

Page 19: ...s shown in Fig 0 Basic Parameters This option allows permanent values to be assigned to the basic address parameters of the NTS The parameters that can be edited under this menu are described below IP Address The IP address is set by keying four 3 digit values representing the 4 octets of the IP address Range of each value is 0 254 If the IP address is set to 0 in all four octets the factory defau...

Page 20: ...t DHCP host name for an NTS01 Time Server Port is Cxxxxxx where xxxxxx denotes the first six digits of the NTS s MAC address For example a NTS with MAC address 00 20 4A 72 DB 2B will appear on DHCP Server lease listings as host C72DB2B Tekron strongly recommends that if DHCP addressing is to be used then the NTS Name should NOT be changed from the default 1 NTS configuration Selecting this option ...

Page 21: ... to five destination IP addresses to be entered Machines on any or all of these IP addresses can then receive the status messages from the NTS Even if there is no formal SNMP system running on the network the messages can be received and displayed on the destination machines running Windows NT or higher using the freeware utility SNMPTRAP EXE which is on the CD supplied with the kit Syslog IP Addr...

Page 22: ...es and the time is synchronised to satellite time then receiver will ignore attempts to change position or time parameters It will also ignore changes if it has not been powered down since it was last synced to satellite time Fig 9 GPS Setup Page with trails and minimum elevations turned on Sky Chart Visible satellites are shown on a Sky Chart see fig above where the rings are elevation markers an...

Page 23: ...eceiver Once the Receiver has successfully tracked satellites and computed time and position these parameters can no longer be changed externally However it IS possible to set time and position if the Receiver has not achieved a satellite fix since power on or if the Receiver has had all existing data cleared before attempting to set time and position The Menu Selection GPS Advanced gives the user...

Page 24: ...s available from the DHCP Server s list The default DHCP name for an NTS01 NTS is Cxxxxxx where xxxxxx denotes the first six digits of the Port s MAC address For example an NTS with Ethernet MAC address 00 20 4A 72 DB 2B will appear on DHCP Server lease listings as device C72DB2B b ARP addressing The ARP method is available under UNIX and Windows systems and can be used when there is no DHCP serve...

Page 25: ...minal 110 250Vdc This supply operates with DC input in the range 90 350Vdc or with AC input in the range 80 240Vac 7 3 Opt 3 Local Time Display Output This factory firmware option provides for display of local time on the front panel of NTS01 and also allows local time to be output on the P5 IRIG B output for use in synchronising other vendors equipment if required See NTS01 configuration Section ...

Page 26: ...y test IEC 61000 4 4 1995 Electromagnetic Compatibility EMC Part 4 Testing and measurement techniques Section 4 Electrical fast transient burst immunity test IEC 61000 4 5 1995 Electromagnetic Compatibility EMC Part 4 Testing and measurement techniques Section 5 Surge immunity test IEC 61000 4 6 2003 Electromagnetic Compatibility EMC Part 4 Testing and measurement techniques Section 6 Immunity to ...

Page 27: ...iameter Jacket 6 10mm Black Polyethylene Bending Radius 40mm maintaining less than 1 ohm impedance change at bend Weight 0 051 kg metre Temperature Range 40o C to 85o C Impedance 50 ohms Velocity 84 Capacitance 79 4pf metre DC Resistance Centre conductor 10 5 ohms per 1000 metre Shield 2 8 ohms per 1000 metre Attenuation 0 33dB per metre 1575 42MHz L1 Shielding 90dB Phase Stability 10ppm degree C ...

Page 28: ...cteristics to out of band signals as does the TCG 01 GPS receiver but high powered RF signals in close proximity to the antenna may still swamp the very low level signals from the GPS satellites 2 Establish the mounting method for the pipe such as strapping to a frame on the edge of the building or to an air conditioning exhaust or similar Note that the base of the pipe needs to be accessible for ...

Page 29: ...itness for a particular purpose other than those specifically set out above or by any existing contract between the parties Any such contract states the entire obligation of Tekron The contents of this document shall not become part of or modify any prior or existing agreement commitment or relationship The information recommendation description and safety notations in this or other documents supp...

Page 30: ...___________________________________ Page 30 of 31 Tekron International Ltd PO Box 31 285 Lower Hutt 6009 New Zealand tel 64 4 566 7722 fax 64 4 569 9272 email support tekroninternational com A return material authorisation number issued by Tekron must accompany all return material ...

Page 31: ...of XEROX Corporation UNIX is a registered trademark of The Open Group Windows Windows 2000 Windows NT and Windows XP are trademarks of Microsoft Corp Copyright 2006 Tekron International Ltd All rights reserved No part of the contents of this document may be transmitted or reproduced in any form or by any means without the written permission of Tekron International Ltd Published in New Zealand WARN...

Reviews: