Clepsydra NTS-3000 User manual

USER MANUAL

NTP/PTPv2 Network Time Servers

NTS-3000

NTS-4000

NTS-5000

Updated: 17-Jul-15

SAFETY INSTUCTIONS 3

TRADEMARKS, ACKNOWLEGMENT & CONTACTS 3

GLOSSARY TIME TERMS 4

1. QUICK START 6

2. PRODUCT INTRODUCTION 9

3. STANDARD SERVER HARDWARE 10

4. EXTRA OPTIONS. EXTENDED MODULES. 14

5. MULTISOURCE. NEW CONCEPT OF TIME SOURCE 16

6. TARGET UTC. THE TRUE OUTPUT TIME 17

7. MOUNTING GPS ANTENNA 22

8. POWERING UP NTS 25

9. BASIC DEVICE CONFIGURATION 26

10. ERROR MESSAGES 28

11. NTP – NETWORK TIME PROTOCOL 29

12. NTP ON TIME FAILURE TOLERANCE NETWORK 32

13. NTS SOFTWARE SETUP 34

14. SECURITY AND NTP AUTHENTICATION MODE 44

18. ON-LINE SUPPORT 57

SAFETY INSTUCTIONS

ATTANTION!

These are the important Safety Instructions that should be followed during

installation and maintenance of the Elproma NTS-3000/4000/5000 timeserver family

product.

IMPORTANT NOTE

This equipment contains hazardous AC and DC voltages. Do not handle any metallic

part until the power has been disconnected. Do not assemble, disassemble set when

the power is ON. Making wiring and touching cables is strongly prohibited when

power is ON. Please refer to your RACK’19 safety instruction to learn more about

connecting power to equipment. The NTS-protection system requires PE line to be

connected into RACK’19 din rails.

Elproma safety advises:

1. Safety first! Never work alone under hazardous voltage conditions

2. High short circuit current trough conductive materials can cause server burns

3. Check that the power cord(s), plug(s), and sockets are in good conditions

4. Always use qualified service personnel to install permanently wired equipment

5. Do not handle any metallic part before the power has been disconnected

6. Take care your power lines and rack’19 frame is properly PE grounded

TRADEMARKS, ACKNOWLEGMENT &

CONTACTS

EU Factory:

ELPROMA Electronics Poland Sp. z o.o.,

Szymanowskiego Str. 13 PL05092 Lomianki/Warsaw POLAND (EU)

Phone: +48 227517680

Fax: +48 227517681

Internet: http://www.clepsydratime.com

Internet: http://www.teleorigin.com

Internet: http://www.elpromagroup.com http://www.elproma.com.pl

E-mail: info@clepsydratime.com

GLOSSARY TIME TERMS

In alphabetic order:

Accuracy - The degree of conformity of a measured or calculated value to its definition or with respect

to a standard reference time. In the meaning of NTP (Network Time Protocol) the accuracy determines

how close the PC clock is to UTC reference (GNSS or external atomic clock).

Atomic Time Scale (TA) - a time scale based on atomic or molecular resonance phenomena. Elapsed

time is measured by counting cycles of a frequency locked to an atomic or molecular transition. Earlier

time scales were based on the rotational rate of the earth.

GBEIDOU– (see COMPASS)

Calibration - The process of identifying and measuring time or frequency errors, offsets, or deviations

of a clock/oscillator relative to an established standard, such as UTC(NIST).

Clock - a device for maintaining and displaying time.

GOMPASS (BEIDOU)– is Chinese satellite navigation system. It consists of two separate satellite

constellations – a limited test system that has been operating since 2000, and a full-scale global

navigation system that is currently under construction. The first BeiDou system, officially called the

BeiDou Satellite Navigation Experimental System.

Coordinated Universal Time (UTC) - a coordinated time scale, maintained by the Bureau International

des Poids et Mesures (BIPM), which forms the basis of a coordinated dissemination of standard

frequencies and time signals. A UTC clock has the same rate as a Temps Atomique International (TAI)

clock or international atomic time clock but differs by an integral number of seconds called leap

seconds. The UTC scale is adjusted by the insertion or deletion of leap seconds to ensure

approximate agreement with UT1.

Drift (frequency) - the linear (first-order) component of a systematic change in frequency of an

oscillator over time.

Frequency - the rate at which a periodic phenomenon occurs over time. Frequency drift - see drift.

Frequency offset - the frequency difference between the measured value and the defined value.

Frequency shift - change in frequency from a standard reference. Frequency stability - statistical

estimate of the frequency fluctuations of a signal over a given time interval.

Frequency standard - an oscillator such as a rubidium (Rb), cesium (Cs), or hydrogen (H) maser who’s

output is used as a frequency.

GALILEO – is a global navigation satellite system (GNSS) currently being built by the European Union

(EU) and European Space Agency (ESA). One of the aims of Galileo is to provide a high-precision

positioning system upon which European nations can rely, independently from the Russian

GLONASS, US GPS, and Chinese COMPASS (BEIDOU) which can be disabled in times of war or

conflict. Galileo is compatible to US GPS (see GPS).

GLONASS – acronym for Globalnaya navigatsionnaya sputnikovaya sistema or Global Navigation

Satellite System, is a space-based satellite navigation system operated by the Russian Aerospace

Defence Forces. It provides an alternative to Global Positioning System (GPS) and is the only

alternative navigational system in operation with global coverage and of comparable precision.

Glonass use L1-1575.42MHz with additional frequency margin between 1597.50-1609.50Mhz.

GPS (Global Positioning System) - a highly accurate, global satellite navigation system based on a

constellation of at 24 satellites orbiting the earth at a very high altitude 20000 km. GPS signals

are: L1-1575.42MHz;L2-1227.6MHz;L3-1381.05 MHz

GMT (Greenwich Mean Time) - a 24 Hour system based on mean solar time plus 12 hours at

Greenwich, England. Greenwich Mean Time can be considered approximately equivalent to

Coordinated Universal Time (UTC), which is broadcast from all standard time and frequency radio

stations. However, GMT is now obsolete and has been replaced by UTC.

International Atomic Time (TAI) - an atomic time scale based on data from a worldwide set of atomic

clocks. It is the internationally agreed upon time reference conforming to the definition of the second,

the fundamental unit of atomic time in the International System of Units (SI). It is defined as the

duration of 9 192 631 770 periods of the radiation corresponding to the transition between two

hyperfine levels of the ground state of the cesium - 133 atom.

Synchronization - The process of measuring the difference in time of two time scales such as the

output signals generated by two clocks. In the context of timing, synchronization means to bring two

clocks or data streams into phase so that their difference is 0 (see time scales in synchronism).

Synchronization - Relative adjustment of two frequency sources with the purpose of canceling their

frequency difference but not necessarily their phase difference.

Stability (frequency) - statistical estimate of the frequency fluctuations of a signal over a given time

interval: Long term stability usually involves measurement averages beyond 100s. Short term stability

usually involves measurement averages from a few tenths of a second to 100s.

Stratum - indicates how fare from cesium ref. the clock is in the chain of synchronization.

Time code - a system of symbols (digital or analog) used for identifying specific instants of time. An

information format used to convey time information. IRIG-B is example of Time Code.

Time interval - The duration between two instants read on the same time scale.

Time scale - a system of unambiguous ordering of events. A time scale is meant to be stable and

homogeneous.

Time standard - a continuously operated device used for the realization of a time scale in accordance

with the definition of the second and with an appropriately chosen origin.

Time step - a discontinuity in a time scale at some instant. A step is positive (+) if the time scale

reading is increased and negative (-) if the reading is decreased at that instant.

Difference between Accuracy and Stability in Time Synchronization

STABLE & ACCURATE STABLE - NOT ACCURATE ACCURATE - NOT STABLE DRIFT

1. Quick Start

Switch ON power and following screen sequence will appear on 2x20 front panel green color LCD:

When booting the following message will be displayed (depends on server model

NTS3000/4000/5000) while dots will be counted up booting progress in the lower line:

After approximately 1 minute the following sequence of messages are displayed in loop:

Press & hold [OK] for 5s to entrance SETUP. The LAN1 IP address will appear on LCD. Use arrow

keys [] to select column position, and [] to assign requested 0-9 values for each IP address

position separately.

Press [OK] to switch to next screen (or press & hold [OK] for 5s to

save entered configuration). You can always interrupt and quit SETUP at any moment by pressing

& holding [C]. Exiting SETUP in [C] (CANCEL) mode disregards all changes and last saved settings

will be restored. Repeat above sequences to setup LAN2 IP address:

LAN1 & LAN2 are isolated (not routed) and therefore they can serve different TCP/IP sub-networks,

both with independent GATEWAY. If you use single LAN (#1 or #2) please leave another one filled by

Loading NTS-3000

…………

Loading NTS-4000

…………

Loading NTS-5000

…………

Press & hold [OK]

to enter setup

…………

Press & hold [OK] [C]

to reset to defaults

…………

LAN1: no carrier

LAN2: no carrier

LAN1: (disabled)

LAN2: (disabled)

LAN1 IP address:

192.168.001.002

LAN1 netmask:

255.255.255.000

LAN1 gateway:

192.168.001.001

LAN2 IP address:

010.000.000.002

LAN2 netmask:

255.255.000.000

LAN2 gateway:

010.000.000.001

TIME SYSTEMS

Boot loader V7.05.29

zero digits (000.000.000.000). Once IP address is set following screen request your confirmation to

save IP data:

and your NTS-3000/4000/5000 timeserver is ready to communicate via LAN1/LAN2 interface.

Unless you wish to provide more advance settings above configuration fine to start working now.

If the GNSS (GPS/Glonass/Galileo) Multi-SAT receiver remains asynchronous the following

information will be displayed on LCD indicating a part of process called –“warm” start:

Once number of satellites are in view receiver lock to GNSS and synchronization process is pending.

Starting from now your server is READY and following message is displayed:

If you use 2 receivers (A & B), additional information from Mulit-SAT GNSS (B) will be displayed too:

It is possible and very probable both GNSS receivers can show different volume of GNSS satellites.

In standard operation mode above screen is displayed to present each satellite system data using

format: XX/YY where XX are number of visible satellites for specific system; YY - total #amount of

available SAT channels at receiver). Following additional information can be provided at any time:

Environmental DATA is provided periodically using time zone settings:

Plugging Ethernet cable to LAN1 will trig following message on LCD

Are you sure?

[OK] - Yes [Cancel] - No

03-05-2014 INIT

12:00:01

03-05-2014 OK

12:01:00 sat A= 18/32

03-05-2014 OK

12:01:00 sat B= 19/32

03-05-2014 GPS 11/32

12:01:00 GNSS 9/32

Firmware release

NTS-3000 04/02/2014

Firmware release

NTS-4000 09/03/2014

Firmware release

NTS-5000 05/03/2014

CPU temperature [C]

+41.5 +36.8 +25.1

Onboard voltage [V]

+3.32 +5.03 +15.54

CPU temperature [F]

+106,7 +98,2 +77,1

LAN1: active

LAN2: no carrier

LAN1: 192.168.1.2

LAN2: (disabled)

LAN1: no carrier

LAN2: no carrier

display:

2. Product Introduction

This manual is common for all Clepsydra Time server models available from Elproma:

NTS-3000, NTS-4000 and NTS-5000 also shortly indicated as NTS-3000/4000/5000. Therefore it use

following convention of NTS-4000/5000 to present functionality what us not available for NTS-3000.

Unless it is clearly indicated in the manual the assuming for functionality is valid for all 3 above

models.

The NTS-3000/4000/5000 Clepsydra Time Server provides a high precision time directly to TCP/IP

Ethernet networks using: NTP (Network Time Protocol), SNTP (Simple Network Time Protocol). It is

compatible to all available versions of NTP/SNTP available on market. Optionally NTS-4000/5000

servers can extra support PTPv2 (Precision Time Protocol IEEE1588), IRIG-B and IBM SYSPLEX

synchronization standards in configuration depends on ordered options.

The NTS-3000/4000/5000 supports all majority of current popular operating systems (OS) including:

Microsoft Windows, Mac OS/X, Linux, FreeBSD, HPUX, IBM AIX, IBM AS/400, ORACLE SUN, CISCO

and other UNIX family systems. It can synchronize simultaneously ten of thousands servers,

workstations, routers, telecom stations (BTS), industrial and power distributions controllers.

Standard product provides accurate time via 2xLAN ports. Optionally the configuration can be

extended up to 6xLAN both: 100Base-T and GE. The Fiber Optic (FO) Ethernet communiocation is

possible via special converter available separatelly.

The NTS-4000/5000 has several extra I/O synchronization standards including optionally interface for:

IRIG-B, 1PPS, 10MHz, SYSPLEX, PTPv2/IEEE1588, E1/T1. Special fast sync startup mode of NTP

has been implemented to reduce unsynchronized time after powering up products that has no battery

powered up RTC clocks. Server NTS-5000 can be extra equipped with additional 8x IRIG-B (AM)

output distribution panel.

The accurate target UTC time is calculated as weighted average of numerous time sources including

double A/B redundant GNSS (GPS/Glonass/Galileo) receiver with build-in active antenna. Servers

NTS4000/5000 can use external clocks as reference too. The target UTC time is produced on way of

comparing settings of maximum available time references including: GNSS, 1PPS, 10Mhz, IRIG-B,

SYSPLEX etc. Special DCF77 RF-AM receiver is available on request for Central Europe & Germany.

Unit status information can be traced on front panel 2x20 characters LCD display. More detailed

statistic is available by remote NTP software utilities (ntpq, ntpdc) and setup utility via: WWW,

TELNET, SSH, SNMP. There is more software utility available FREE to download from

www.clepsydratime.com: ClepsydraNTPmonitor, ClepsydraNTPconfig, ClepsydraNTPclock etc.

All Clepsydra Time Servers can operate in standard or special NTP authentication mode protected by

MD5 algorithms and PKI infrastructure. Unit supports broadcast, manycast, multicast and client/server

modes of NTP. A true novelty is an option to create cascade of servers where one can simulate an

NMEA (GPS) antenna for the other. This functionality enables time synchronization of secured LANs

with official time from NTP servers available publicly on line in Internet.

All servers are ready to work with any external SYSLOG or SNMP (MIB2) server. Error messages can

be traced on local (2x20) LCD or remotely over wall LED NTP display from Elproma. It let friendly

warn on any unexpected situation that may happen. Messages can be also sent via E-MAIL directly

from any NTS-3000/4000/5000 timeserver.

Servers are designed to operate without ventilators and fans. Metal housing is an important part of

natural cooling system designed in such way that unit can be located in the neighborhood of any

device working inside rack19 mount frame.

3. Standard Server Hardware

NTS-3000/4000/5000 (standard version) has similar front panel architecture and components location.

There is 2x20 characters LCD Status Display (green color). All devices come with 6-key keyboard for

quick setup. The RS232 (DSUB-9 mail) connector is preserved for value added functionality (e.g.

cesium clock connection etc.). There is 2xUSB2.0 interface for firmware upgrade or backup purpose.

There is LAN2 connector located on the front panel too. It contains 2x LEDs: green - indicates cable

connection, yellow - flashes while data is being transmitted.

Standard Front Panel

The back panel of NTS-3000/4000/5000 (standard version) is organized on way there are several I/O

referential time sections. :

Standard Back Panel

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