Tekron NTS 03-G+ User manual

NTS 03-G+
USER MANUAL
Third Edition Copyright©2020

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Contents
1. INTRODUCTION.................................................................................................................................................................................4
2. FRONT PANEL....................................................................................................................................................................................5
LCD Display...............................................................................................................................................................................................................5
Contrast Adjustment Mode.........................................................................................................................................................8
LED Indicators..........................................................................................................................................................................................................8
Admin (USB) Port .................................................................................................................................................................................................9
3. BACK PANEL.....................................................................................................................................................................................10
P1A/B: Power Input..............................................................................................................................................................................................10
Earth Studs (M4 Nut)..........................................................................................................................................................................................11
4. BACK PANEL INPUTS AND OUTPUTS.........................................................................................................................12
Ant: Antenna Connector (SMA Connector)...........................................................................................................................................12
Antenna Cable Considerations...............................................................................................................................................12
P2: IRIG-B Input (3-pin 3.81 mm Connector)..........................................................................................................................................13
P3: IRIG-B Output (3-pin 3.81mm Connector).....................................................................................................................................13
P4: Sync Alarm Relay (4-pin 3.81mm Connector).............................................................................................................................13
P5: Power Alarm Relay (4-pin3.81 mm Connector)..........................................................................................................................13
ADMIN/ETH 1: Ethernet Administration Port (RJ45).......................................................................................................................14
ETH 2 6: Ethernet Communication Ports (RJ45/ST Fiber Connector)..............................................................................14
P6 P9: Programable Output (50 OHM BNC Connector/ST Fiber connector)...............................................................15
P10 & P11: Programable Output(50 OHM BNC Connector).........................................................................................................15
5. INSTALLATION................................................................................................................................................................................17
Identification...........................................................................................................................................................................................................17
Mounting the NTS 03-G+................................................................................................................................................................................17
Operation..................................................................................................................................................................................................................17
6. FACTORY RESET............................................................................................................................................................................18
7. FACTORY HARDWARE OPTIONS........................................................................................................................................19
Power Supply Options.......................................................................................................................................................................................19
Expansion Board Options................................................................................................................................................................................19
Slave Only Option (Fiber input)....................................................................................................................................................................19
OCXO Option..........................................................................................................................................................................................................19
Rubidium Option...................................................................................................................................................................................................19
8. APPENDIX...........................................................................................................................................................................................20
NTS 03-G+ Specifications..............................................................................................................................................................................20

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Physical Specifications...............................................................................................................................................................20
GNSS Receiver.................................................................................................................................................................................20
Input & Output Connector Specifications.......................................................................................................................20
Input & Output Specifications.................................................................................................................................................21
DC-IRIG/AM-IRIG Availability...................................................................................................................................................21
IRIG-B Translation Chart.............................................................................................................................................................22
Environmental Specifications..................................................................................................................................................22
Electrical Specifications..............................................................................................................................................................23
9. WARRANTY.......................................................................................................................................................................................24

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1. INTRODUCTION
The NTS 03-G+ provides a precision time reference with multiple independently-addressed Ethernet
Ports and optional high drive IRIG-B outputs. A single NTS 03-G+ can support three Ethernet ports
and two alarm ports on the base unit with two different expansions supporting:
•Three additional Ethernet ports and two alarm ports or
•OneadditionalEthernetport,twoalarmports,fourDC IRIG-B(copperorfiber)andtwo DC/AM
IRIG-B ports.
All NTS 03-G+ Ethernet ports function as Stratum 1 (NTP) and Grandmaster (PTP) sources. Each unit
has a built-in GPS/GLONASS-synchronized master clock which provides the source reference time
used by all of the Ethernet ports. In addition, either a high precision OCXO or Rubidium oscillator can
increase holdover from hours to days.
With true dual/redundant power supply options (not just dual power input connectors), the NTS 03-
G+ product is ideally suited for use in industrial environments and can provide NTP & PTP server
functions to multiple independent Ethernet networks.
All NTS 03-G+ units feature a front panel display (See Figure 1) giving visual feedback about the time
Figure 1 NTS 03-G+ front panel
The NTS 03-G+ features an administrative 10/100 Mb Ethernet port through which the units inputs
and outputs can be configured. When the IEEE 1588 v2 (PTP) option is enabled, the unit can operate
as a PTP Grand Master, an ordinary PTP clock, or a Slave-Only Clock.
Configuration software which is available to download from www.tekron.com. Optional accessories
include antenna, low loss antenna cable, antenna pipe mounting components andlightning protection
kit.

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2. FRONT PANEL
Figure 2 NTS 03-G+ front panel
NTS03-G+ featurestwo LED indicatorson thefront panel(SeeFigure2), togetherwith a2-line by16-
character backlit LCD display.
SYNC LED: ThisLED shows the status of the current sync source (as perLED Indicators Table 2)
ALM LED: This LED shows the alarm status of the NTS 03-G+ (as per LED Indicators Table 3)
ADMIN (USB) Port:This portmay beused toconfigure theclock using the Tekron ConfigurationTool
available for download on the Tekron website www.tekron.com.
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 03-G+
is operating in its default mode (GNSS-synchronized), 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). Figure 3d and Figure 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 screens are shown below.
3a Start Up (Clock ID)
3b Waiting for Satellites
3c Operating Default
3d Local Time
3e UTC Time
3f Alarm
NTS 03-G + Ver X.XX
(C) 2014 Sn18748
WAITING FOR SYNC
GPS RX STAT: 00A
UTC+1200 17MAR10
076 11:16:53 87A
LST: TUE 17 MAR10
076 11:16:53 87A
UTC: MON 16MAR10
075 23:16:53 87A
*** ANT ***
075 23:16:53 87A

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3g IP Address
Figure 3 LCD display screens (examples) screen
in Figure 3c
local date. The local time day-of-year and time-of-day are on the bottom line.
Figure 3c showsthat the clockis operating with a local time offset of 12hours ahead ofUTC. The local
date is 17th March 2010, and the local time is 11:16:53 in the morning.
Figure 3d shows the same time and date, but also indicates that the time displayed is Local Standard
ime. If daylight savings time is
3
Figure 3e shows the UTC time and date which is 23:16:53 (11:16:53pm) on the evening of Monday 16th
March 2010.
Figure 3f shows that an antenna alarm is active in the clock. All active alarms will be displayed in the
same way.
Figure 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.
All screensdisplayed afterthe initial start-upscreen showa three-characterstatus fieldat thebottom
right-hand side of the display. When the NTS 03-G+ is operating in its default mode (GNSS-
synchronized), this field provides further details about the GNSS function as shown in Figure 4Figure
5 and table 1a below.
When the NTS 03-G+ source other than GNSS, this field directly indicates the sync
source.). Table 1b shows the alternate sync sources supported by the NTS 03-G+.
Figure 4 Satellite tracking status
Fixed:
192 . 168 . 096 . 010
Satellites in sky
Satellites tracked
Receiver status
LST: TUE 17 MAR10
076 11:16:53 87A

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Character
Values
Description
Satellites in
the sky
- - 9
- -14
This character represents the total number of satellites currently
position means that NTS 03-G+ has lost its knowledge of the
n
instorage foran extendedperiod,oriftheGNSSreceiverhasbeen
reset. It will typically take 20 minutes (worst case two hours) for
the unit to gain sufficient GNSS synchronization for the NTS 03-
G+ to recommence normal operation (Position hold).
Satellites
tracked
- - 9
- -14
Thisdigit representsthe numberof satellitescurrentlybeing used
ndition
Receiver
status
NTS 03-G+ in Acquisition mode - attempting to get satellite fixes.
positioned in almost a
straight line so best accuracy cannot be obtained, but the unit will
still sync to UTC.
A 2Dposition isin use (noheight). Thismay occurbefore Position
Hold mode has been reached if only 3 satellites are tracked.
Synchronization is not compromised.
A3Dpositionisinuse,whichincludesheight. Asitesurveybegins
next, so this mode is rarely seen.
Site Survey in progress. NTS 03-G+ is calculating an accurate
position; once complete the mode will change to Position hold.
providing its most accurate time, typically better than 40 ns to
UTC.
Table 1a GNSS Status
Character
Values
Description
Alternate
Sync Source
PTP
Clock is synchronized to a PTP Grandmaster
Clock is synchronized to a NTP Server
SLC
Clock is synchronized to an IRIG-B source on P2
Clockis synchronizedto anIRIG-
Clock is operating with manually set time. Please refer to

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Table 1b Alternative Sync Source
If the clock is configured to synchronize to IRIG-
displayed in the status field if there is no IRIG-B signal input.
Contrast Adjustment Mode
The LCD contrast can be adjusted by entering the Contrast Adjustment Mode. This mode is entered
by double pressing the button on the front panel.
Once in Contrast Adjustment Mode, pressing the button will lighten the contrast and decrease the
contrast by one level. There are five different contrast levels and the LCD will cycle from the lightest
to darkest if the button is pressed when on the lightest setting.
To exit the Contrast Adjustment Mode, simply double-press the button on the front panel again. The
button will return to normal operations after this.
LED Indicators
The SYNC LED show the synchronization status of the clock to the active primary reference source.
The primary reference source could be GNSS,PTP or IRIG-B.
State
Description
off
The NTS 03-G+ has no power
on
The NTS 03-G+ is synchronized to the source indicated by the LCD
display
Slow Flash (1 per second)
The NTS 03-G+
running)
synchronization)
Fast Flash (5 per second)
The NTS 03-G+
LED Indicators Table 2 SYNC LED
The ALM LED indicates the internal alarm status of the NTS 03-G. It has only two operating states:-
State
Description
off
The NTS 03-G+ is operating normally. i.e., there are no alarms
Fast Flash (5 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 in Figure 3f above).
LED Indicators Table 3 ALM LED

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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.
Table 4 - Alarm Definitions
Admin (USB) Port
An Admin port (USB type B) is provided to support local configuration/administration. The
USB port has the same configuration options as the Admin Ethernet port 1. The
configuration software supplied with the NTS 03-G+ supports both USB and Ethernet
configuration. A USB driver for the NTS 03-G+ can be downloaded from www.tekron.com.
TheNTS03-G+canbeconfiguredforUSBonlyconfigurationtoaddanextrasecuritylayer.

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3. BACK PANEL
Examples of NTS 03-G+ back panels are shown (See Figure 6 - Figure 9). Their appearance will vary
when fiber Ethernet ports are fitted or the fiber slave option is selected.
Figure 6 Rear panel of NTS 03-G+, 3 Port Option
Figure 7 Rear panel of NTS 03-G+, 6 Port Option
Figure 8 Rear panel of NTS 03-G+, 4 Port with BNC IRIG-B outputs
Figure 9 Rear panel of NTS 03-G+, 4 Port with ST fiber outputs
P1A/B: Power Input Power is applied to the unit via P1A and/or P1B (when fitted). The NTS 03-
G+ can be ordered with high voltage AC input supplies or high or medium
voltage DC supplies, ora combination. IEC-320 powerconnectors (shown to
the left) are used for high voltage AC, and 5.08mm 2-pin connectors for low,
medium or high voltage DC inputs. The polarity of DC power sources is not
importantasboththeunitandcaseareisolatedfromthesupplyinputs.Thisenablestheuseofpositive
earth, negative earth or fully floating DC power sources. If either of the power supplies fails, the clock
will remain operational provided that each power supply is powered from a different source.
The input voltage range is marked below the P1A/B connectors. Refer to section 6.1 for a list of
orderable ranges.