Tekron TTM 01-G User manual

TTM 01-G
USER MANUAL

TTM 01-G Manual / October 2018 2
Table of Contents
Introduction....................................................................................................................................................... 4
Product Overview.................................................................................................................................................. 4
Accessories ............................................................................................................................................................ 4
LED Indicators.................................................................................................................................................... 5
Inputs and Outputs............................................................................................................................................ 7
ANT: Antenna Port (SMA connector) .................................................................................................................... 7
ETH: Ethernet Interface (ST Fiber / RJ-45)............................................................................................................. 8
TX: Fiber Output .................................................................................................................................................... 8
TTL: TTL Output ..................................................................................................................................................... 8
ALM: Alarm Output ............................................................................................................................................... 9
OPT: Optional Output............................................................................................................................................ 9
Software .......................................................................................................................................................... 10
Configuration Tool............................................................................................................................................... 10
Installation....................................................................................................................................................... 11
Identification ....................................................................................................................................................... 11
Location............................................................................................................................................................... 11
Power Supply....................................................................................................................................................... 11
Hazardous Voltage .............................................................................................................................................. 12
Earthing ............................................................................................................................................................... 12
Mounting the TTM 01-G...................................................................................................................................... 13
Connecting the TTM 01-G ................................................................................................................................... 13
Factory Reset................................................................................................................................................... 15
Factory Hardware Options .............................................................................................................................. 16
Power Supply Options ......................................................................................................................................... 16
Optional Output Cards ........................................................................................................................................ 16
Isolation and Protection.................................................................................................................................. 17
Lightning Protection ........................................................................................................................................ 18
Appendix.......................................................................................................................................................... 19
TTM 01-G Specifications...................................................................................................................................... 19
Serial Output String (Serial Output Option) .................................................................................................... 20
General Key to Fields................................................................................................................................... 20
NGTS Time Code O/P................................................................................................................................... 20

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IRIG J-17 Time Code O/P ............................................................................................................................. 21
String-A Time Code O/P............................................................................................................................... 22
String-B Time Code O/P............................................................................................................................... 23
String-C Time Code O/P............................................................................................................................... 24
String-D Time Code O/P .............................................................................................................................. 25
String-E Time Code O/P............................................................................................................................... 26
String-F Time Code O/P ............................................................................................................................... 27
String-G Time Code O/P .............................................................................................................................. 28
NMEA ZDA Time Code O/P.......................................................................................................................... 29
NMEA RMC Time Code O/P......................................................................................................................... 31
Warranty ......................................................................................................................................................... 33

TTM 01-G Manual / October 2018 4
Introduction
Welcome to the TTM 01-G user manual! This document contains everything you need to know about the key
features, hardware, and installation process of the TTM 01-G.
Product Overview
The TTM 01-G is a powerful and cost-effective synchronization solution for Remote Terminal Units (RTUs),
Protection Relays and other Intelligent Electronic Devices used in electrical sub-stations and industrial control
installations.
Utilizing state of the art technology, this compact unit locks onto atomic clock references from the GPS and
GLONASS satellite constellations and produces time codes and pulses with sub-microsecond accuracy and
precision.
The TTM 01-G clips onto a standard DIN rail. Its rugged compact design is suitable for noisy electrical
environments, while built in electrical isolation combined with strong push pull drives on outputs simplifying
wiring schemes and enhancing reliability. Refer to Figure 1.
Figure 1 - TTM 01-G Front View
Accessories
The TTM 01-G comes complete with Ethernet cables to allow for customization and easy setup from the
Windows™ Configuration software which is available to download from www.support.tekon.com
Optional accessories include antenna, low loss antenna cable, antenna pipe mounting components, lightning
protection kit and BNC to 2-pin connector adaptor.

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LED Indicators
The top of the TTM 01-G features two LED indicators. The SYN LED shows synchronization status, while the ALM
LED shows the alarm status of the unit.
Outputs are synchronized to UTC time only when the SYN LED is fully illuminated.
Table 1, Table 2 and Table 3 below provide information regarding the interpretation of the LEDs.
SYN LED
Meaning
Off
The TTM 01-G has no power.
Slow Flash
(1x flash per
second)
The TTM 01-G is operating in the “holdover” state (holdover timer is running) or is
operating in the “tuning” state (time server is gaining synchronization).
Fast Flash
(5x flashes per
second)
The TTM 01-G is not synchronized (out of sync and not in holdover).
On
The TTM 01-G is synchronized.
Table 1 - SYN LED Functionality
ALM LED
Meaning
Off
The TTM 01-G is operating normally and has no alarms.
Fast Flash
(5x flashes per
second)
At least one alarm is active. Refer to the alarm window in the Clock tab of the Configuration
Tool to find the name of the active alarm(s). Refer to Table 3 below for the details on each
alarm by name.
Table 2 - ALM LED Functionality
Alarm Name
Specification
Satellites Low
The number of satellites currently being used for time and position calculations is below the
threshold.
No Sync
The TTM 01-G is not synchronised to any source, or holdover period has expired, or the
timing output inaccuracy has been exceeded.
Holdover
The TTM 01-G has lost synchronization to any source and is now in holdover.
No Antenna
The antenna circuit current drain is low (typically under 3mA). This could be caused by poor
connections, or if the connected antenna has a lower current drain specification or if a
component in the antenna system is providing power to the antenna and therefore the TTM
01-G is not seeing a connected load, or if there is no antenna connected.
Antenna
Short
The antenna circuit current drain is high (typically over 100 mA). This is caused by a short in
the antenna circuit, or by moisture ingress in the circuit, or if the antenna connected has a
higher current drain specification.
Antenna
Fault
This alarm is generated if there is high current or low current detected on the antenna input.
Factory Reset
Armed
This alarm is generated if the Forgotten Password Reset (Factory Reset Process) is enabled
and has been initiated by the user.

TTM 01-G Manual / October 2018 6
ADMIN/ETH1
Address Fault
This alarm comes up when the DHCP server is unavailable or when the IP address is assigned
to some other node in the network and cannot be assigned to the TTM 01-G Ethernet port.
Under such situations the Ethernet port defaults to a link local address.
Sync Forced
This alarm is generated when the “Never leave Sync (Test Mode)” option has been selected.
Table 3 - Alarm Specification

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Inputs and Outputs
ANT: Antenna Port (SMA connector)
The “ANT” antenna input provides an interface for an external active antenna. The antenna should be
connected using a high quality, low loss 50 Ω low loss coaxial cable. The centre conductor can supply 5 Vdc (100
mA max.) to power an active antenna. The antenna voltage will automatically fold back to limit the output
current under fault condition.
Care should be taken to ensure that the connector is not cross threaded when attaching the antenna lead-in
cable. The connector should be tightened firmly by hand only. Do NOT over-tighten! Ensure the antenna
SMA male connector center pin is straight before plugging in.
Antenna Cable Considerations
The TTM 01-G antenna port expects a signal with a gain of at least 15 dB, and no more than 35 dB, with 20 – 35
dB being the optimal gain range.
All antenna cables will introduce some signal loss in the antenna installation system, which will be dependent on
cable length. The total gain of the antenna installation should fall within the ranges specified below. The total
gain is calculated by the gain of the antenna (Tekron supplied antenna provides 40 dB gain) minus the antenna
cable loss.
Figure 2 - Recommended antenna cable loss range
Note: The above figures are based on an average GNSS signal strength of -130 dBm at sea level and assumes
that the Tekron supplied antenna is used.
CNT-240
32.8 dB/100 m (10dB/100ft). Plus 1 dB/connector
Approximate optimum length range: 15m to 60m (50 ft –
197 ft)
Approximate maximum length range: 15m to 76m (50 ft –
250 ft)
CNT-400
16.73 dB/100 m. Plus 1 dB/connector
Approximate optimum length range: 30m to 120 m (99 ft –
394 ft)
Approximate maximum length range: 30m to 150m (99 ft –
493 ft)

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A lightning protection device should be inserted into the antenna lead. A suitable device, complete with
additional cable connectors, a connector crimping tool and mounting hardware is available as an option. The
introduction of the lightning protector introduces an additional loss of 0.1 dB and the loss of two connectors.
Care should be taken to ensure that the connector is not cross threaded when attaching the
antenna lead-in cable. The connector should be tightened by hand only. DO NOT OVER-
TIGHTEN!
ETH: Ethernet Interface (ST Fiber / RJ-45)
TTM 01-G units are fitted with either an RJ-45 10/100 Mbps Ethernet interface or an ST multi-mode Fiber
100BASE-FX Ethernet interface. The unit can be configured over the LAN (Local Area Network) and can be
loaded with PTP or NTP / SNTP Licenses.
To the left of the Ethernet connector are two LEDs: The “LNK” LED (above) and the yellow “ACT” LED (below).
The LNK LED will be on when the unit is connected to a valid Ethernet port whilst the ACT LED will be on when
there is activity on either the transmit or receive pair on the Ethernet port.
TX: Fiber Output
This port transmits an IRIG-B (B00x or B22x), programmable pulse or DCF77 signal over fiber, that may be
configured to output in either inverted or non-inverted polarity. The fiber transmitter is compatible with 50/125
µm, 62.5/125 µm and 100/140 µm multimode glass fiber.
TTL: TTL Output
The TTL output is a high drive, non-isolated TTL level driver which can be configured using Tekron’s
Configuration Tool. This port transmits an IRIG-B (B00x or B22x), programmable pulse, or DCF77 signal using 0 –
5 Vdc TTL level on pins “+” and “-” of the screw terminal connector. The default output is an un-modulated IRIG-
B signal (IRIG-B004 with C37.118.1 extensions). It can be used as the master source signal to drive one or many
slave devices. The IRIG-B timing pulses (both leading and trailing edges) from this port is typically to within 100
ns of UTC.
This port is a programmable TTL level output that may be configured to output in either inverted or non-inverted
polarity:
•A configurable number of pulses per second, minute, hour, day with adjustable pulse-width and offset.
•IRIG-B time code (Un-modulated DCLS or Modified Manchester) with option C37.118.1 or AFNOR
extensions.
•Simulated DCF77 receiver time code.

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ALM: Alarm Output
The alarm output is a type “A” (normally open) dry contact type. Additionally, it is a high voltage isolated contact
capable of switching up to 300 V at 100 mA.
Note: The “Normally-Open” (NO) descriptor refers to the de-energized state of the relay.
The TTM 01-G operates with the alarm relays energized during normal operation, and de-energized in the alarm
state. It follows that, in the event of all power to the TTM 01-G being lost, the alarm relay defaults to the “alarm”
state (open contact). The “+” and “-” symbols are included for reference purposes only, as the alarm contacts are
not polarized.
The “ALM” output is a synchronization fail alarm. This alarm is active (contact open) when the unit is not
synchronized and is not in the holdover state.
OPT: Optional Output
The TTM 01-G has a slot for one I/O card, to allow a variety of user interfaces. Each card is limited to one
additional port with at least 3 kV isolation from the rest of the system to avoid current loops. Refer to Table 5
for the list of orderable options.

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Software
Configuration Tool
The TTM 01-G can be configured via Ethernet. The configuration tool can be downloaded from the Tekron Support
website: www.support.tekon.com. By default, the unit is shipped with DHCP enabled for automatic IP address
assignment, with a fall back to link local addressing (169.254.xxx.xxx) if no DHCP server is present.
Default Username: admin
Default Password: Password
Note:
The user is required to change the default password on first login.