Tekron NTS 02-G User manual

NTS 02-G
USER MANUAL
Third Edition Copyright©2020

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© 2020 by Tekron International Limited. All Rights Reserved. All trademarks are the property of their respective holders. The information in this
document is provided for informational use only and is subject to change. For further information or support, go to: ww.tekron.com.
Contents
Contents..............................................................................................................................................................................................................................2
1. Introduction.....................................................................................................................................................................................................4
2. Front Panel.......................................................................................................................................................................................................6
LED Indicators............................................................................................................................................................................................................................9
USB Port:.....................................................................................................................................................................................................................................10
3. Back Panel.......................................................................................................................................................................................................11
P1 Power Input..........................................................................................................................................................................................................................11
Earth Stud (M4 Nut)..............................................................................................................................................................................................................11
Ant: Antenna Connector (SMA Connector)..............................................................................................................................................................11
Antenna and Lead-in Cable Considerations............................................................................................................................................................12
P2: IRIG-B Input (3-pin 3.81 mm Connector)............................................................................................................................................................12
P3: Programmable Output (3-pin 3.81 mm Connector).....................................................................................................................................12
P4: Alarm Relays (4-pin 3.81 mm Connector).........................................................................................................................................................13
ADMIN/ETH 1: Ethernet Administration Port (RJ45).........................................................................................................................................13
ETH 2 & ETH3 Ethernet Communication Ports (RJ45)................................................................................................................................14
4. Software...........................................................................................................................................................................................................15
Configuration Tool.................................................................................................................................................................................................................15
USB driver...................................................................................................................................................................................................................................15
5. Factory Hardware Options...................................................................................................................................................................16
Power Supply Options.........................................................................................................................................................................................................16
Slave Only Option (Fiber input)......................................................................................................................................................................................16
1. INSTALLATION...........................................................................................................................................................................................17
Identification.............................................................................................................................................................................................................................17
Location.......................................................................................................................................................................................................................................17
Power Supply............................................................................................................................................................................................................................17
Hazardous Voltage................................................................................................................................................................................................................17
Mounting the NTS 02-G.....................................................................................................................................................................................................17
Operation....................................................................................................................................................................................................................................18
2. Appendix..........................................................................................................................................................................................................19

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NTS 02-G Specifications....................................................................................................................................................................................................19
3. Warranty Statement................................................................................................................................................................................20
4. Notes.................................................................................................................................................................................................................20

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document is provided for informational use only and is subject to change. For further information or support, go to: ww.tekron.com.
1. Introduction
The NTS 02-G Network Time Server provides a precision time reference for synchronizing Ethernet
networks. The NTS 02-G features multiple independently-addressed Ethernet Ports each supporting the
NTP protocol. Each NTS 02-G base unit has a built-in GNSS-synchronized master clock which, in the default
operating mode, provides the source reference time used by all of the Ethernet ports. It follows, therefore in
terms of Network Time Protocol (NTP) definitions, that all NTS 02-G Ethernet Ports are Stratum 1 sources.
The NTS 02-G product is ideally suited for use in industrial environments and can provide NTP server
functions to multiple independent Ethernet networks.
All NTS 02-G units feature a front panel display (See figure 1) giving visual feedback about the time data
Figure 1 NTS 02-G: front and back panels

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The NTS 02-G features an administrative 10/100 Mb Ethernet port through which the units inputs and
outputs can be configured.
Configuration software which is available to download from www.tekron.com. Optional accessories include
antenna, low loss antenna cable, antenna pipe mounting components and lightning protection kit.

2. Front Panel
Figure 2 NTS 02-G front panel
The NTS 02-G features two LED indicators on the front panel (See figure 2), together with a USB port and a
2-line by 16-character backlit LCD display.
SYNC LED: This LED shows the status of the current sync source.
ALM LED: This LED shows the alarm status of the NTS 02-G.
ADMIN (USB) Port: This port may be used to configure the clock using the Tekron Configuration Tool
available for download on the Tekron website.
LCD Display:
On initial power-up, the LCD display shows a copyright message, along with the serial number and revision
level of the unit (See figure 3a). Approximately 10 seconds after power-up, if the NTS 02-G is operating in its
default mode as a GNSS-synchronized Grand Master Clock, then the display changes automatically to
indicate that it is waiting for satellites (See figure 3b). Once one or more satellites have been discovered, it
transitions to the operating default display (See figure 3c). Figures 3d and 3e show alternative time displays
that the user can access by pushing the button on the front panel between the LED indicators. Successive
button-pushes can be used to cycle through all the display screens in turn. Examples of the display screen
share shown below:

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3a Start up (Clock ID)
3b Waiting for satellites
3c Operating default
3d Local time
3e UTC Time
3g IP Address
3f - Alarm
Figure 3 LCD display screens
of screen 3c
time day-of-year and time-of-day are on the bottom line.
Screen 3c shows that the clock is operating with a local time offset of 12 hours ahead of UTC. The local date
is 17th March 2013, and the local time is 11:16:53 in the morning.
Screen 3d shows the same time and date, but also indicates that the time displayed is Local Standard Time,
in screen 3d
Screen 3e shows the UTC time and date which is 11:16:53 on the evening of Monday 17th March 2013.
Screen 3g shows the basic Ethernet network settings for Admin/ ETH 1 port. In this example it shows the
port has been configured with a fixed IP address of 192.168.96.10.
The display screens in Figure 3b, 3c, 3d and 3e, each show a three-character status field at the bottom right-
hand side of the display. When the NTS02-G is operating in its default modeas a GNSS-synchronized Grand
Master, this field provides further details about the GNSS function as shown in fig 4a and table 1a below.
When the NTS 02-G n IRIG-B source, this field directly indicates the sync source. (see
SLC alternate sync sources supported by the NTS 02-G.
NTS 02-GVer. 3.05R
(C) 2013 Sn60348
WAITING FOR SATS
GPS RX STAT: 00A
UTC+1200 17MAR13
076 11:16:53 87P
LST: TUE 17MAR13
076 11:16:53 87P
Fixed:
192 . 168 . 96 . 10
UTC: MON 16MAR13
075 23:16:53 87P
*** ANT L ***
075 23:16:53 80P

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LST: TUE 17MAR13
076 11:16:53 87P
Satellites in sky
Satellites tracked
GNSS Receiver Mode
LED INDICATORS Table 1a GNSS Status
Character
Values
Description
Satellites
in the sky
- 9 : 0 - 9
- E : 10-14
Represents the total number of satellites currently present in the sky according
to the GNSS NTS 02-G has lost its
knowledge of the GNSS
been in storage for an extended period, or if the GNSS receiver has been reset. It
may take up to two hours for the NTS 02-G to operate normally again.
Satellites
tracked
- 9 : 0 - 9
- E : 10
14
This digit represents the number of satellites currently being used to compute
see
3.6 below as described under (2.1) below.
GNSS
Receiver
Mode
NTS 02-G in Acquisition mode - attempting to get satellite fixes.
best accuracy cannot be obtained, but the unit will still attempt to synchronize
to UTC.
Site Survey in progress. NTS 02-G is synchronized and is refining the position
calculation for higher precision. Once complete the mode will change to Position
hold.
now known precisely, and the NTS 02-G is providing
its most accurate time, typically within 40 ns of UTC.
LED INDICATORS Table 1b Alternative Sync Source
Character
Values
Description
Alternate
Sync
Source
SLC
Clock is synchronized to an IRIG-B source on P2 input
Clock is synchronized to an IRIG-B source on the Fiber input
function for further details
If the clock is configured to synchronize to IRIG-B only (ignore GNSS)
Figure 4a GPS Receiver Status Figure 4b IRG-B Source
LST: TUE 17MAR13
076 11:16:53 SLC

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will be displayed in the status field if there is no IRIG-B signal input.
LED Indicators
The SYNC LED shows the status of the sync source. The various states are shown as follows:-
Off: The NTS 02-G has no power.
On: The NTS 02-G is synchronized to the source indicated by the LCD display
Slow Flash (1 flash per second): The NTS 02-G -
running)
Fast Flash (5 flashes per second): The NTS 02-G is not synchronized.
The ALM LED indicates the internal alarm status of the NTS 02-G. It has only two operating states:-
Off: The NTS 02-G is operating normally. i.e., there are no alarms
Fast Flash: (5 flashes per second): Alarms are active. In this case, the actual alarm state is shown on the top
line of the LCD display, replacing the normal date information (see example infig 3f above).
Alarm State
Definition
*PwrA*
Power A: Power is not present on the Power A (P1A) input
*PwrB*
Power B: Power is not present on the Power B (P1B) input
*Hold*
Holdover: The clock has lost sync, but the outputs are still active and indicating the
appropriate loss of accuracy (oscillator drift).
*Sync*
Lost sync: The clocks has lost sync, the holdover time has expired and the outputs are not
active
*AntL*
Antenna Low: An under-current state has been detected on the antenna input (antenna
disconnected)
*AntH*
Antenna High: An over-current state has been detected on the antenna input (antenna
short circuit)
*Sats*
Satellites Low: The number of satellites have fallen below the user configured threshold
*IRIG*
No IRIG-B Input: This alarm appears when IRIG-B input monitoring is enabled and there is no
IRIG-B input signal.
*IPex*
Link Local Address: The port has been configured for DHCP and could not obtain an
address, and has rolled back to a linked local address: 169.254.X.X.
eX represents the port number which has the alarm.
Table 1 - Alarm Definitions

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USB Port:
A USB port (type B) is provided to support local configuration/administration. The NTS 02-Gconfiguration
software supports both USB and Ethernet configuration.