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TEK-TCG 01-G-Manual-v6-052021

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© 2021 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 www.tekron.com.

When the TCG 01-G is synchronized to a source other than GNSS, this field directly indicates the
alternate sync source being used by the TCG 01-G. Table 2 shows the alternate sync sources
supported by the TCG 01-G.

Character

Values

Description

Satellites in
the sky

“0 - 9”: 0 - 9
“A - E”: 10-14
“F”: > 14

This character represents the total number of satellites
currently present in the sky according to the GNSS almanac.
“0” in this position means that TCG 01-G has lost its

knowledge of the GNSS satellites’ orbit geometries. This
occurs if the unit has been in storage for an extended period,
or if the GNSS receiver has been reset.
It will typically take 20 minutes (worst case two hours) for the
unit to gain sufficient GNSS synchronization for the TCG 01-G
to recommence normal operation (Position hold).

Satellites
tracked

“0 - 9”: 0 - 9
“A - E”: 10-14
“F”: > 14

This digit represents the number of satellites currently being
used to compute the time solution.
A “0” value means that no updated time solution is available
(“out of lock” condition).
If this condition persists for the “Holdover” time the clock will
indicate the “out of sync” condition.

Receiver
status

“A”

TCG 01-G is in Acquiring mode - attempting to get satellite
fixes.

“G”

“Poor satellite geometry”: Satellites are positioned in almost a
straight line, so the best accuracy cannot be obtained, but the
unit will still sync to UTC.

“S”

A Site Survey is in progress. The TCG 01-G is calculating an
accurate position. Once complete, the mode will change to

Position hold.

“P”

“Position hold”: The position is known accurately, and the

GNSS reference is providing its most accurate time, typically
better than 40 ns to UTC.

Satellites in sky

Satellites tracked

Receiver status

LST: TUE 17MAR10

076 11:16:53 87A

LST: TUE 17MAR10

076 11:16:53 SL1

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Summary of Contents for TCG 01-G

Page 1: ...Sixth Edition Copyright 2021 TCG 01 G USER MANUAL ...

Page 2: ...n Connector 5 08 mm 13 Earth Stud M4 Nut 13 4 BACK PANEL INPUTS AND OUTPUTS 14 ANT Antenna Connector SMA Connector 14 Antenna Cable Considerations 14 P2 P3 Programmable Outputs 2 pin 3 81 mm BNC or ST Fiber 16 Electrical and Physical Configuration 16 If an output is not being used it may be left unconnected The dust cap should remain in place on unused fiber connectors 16 P2 P3 Programmable Output...

Page 3: ...put Function IRIG B Event Recording 24 7 FACTORY RESET 26 8 FACTORY HARDWARE OPTIONS 27 Power Supply Options 27 High Voltage MOSFET Output Option 27 Lightning Protection Option 28 General 28 Installation 29 Disclaimer 29 9 APPENDIX 30 TCG 01 G Specifications 30 Physical Specifications 30 GNSS Receiver 30 Input and Output Specifications 30 Environmental Specifications 31 Electrical Specifications 3...

Page 4: ...g F Time Code O P on P4 41 String G Time Code O P on P4 42 String H Time Code O P on P4 44 NMEA ZDA Time Code O P on P4 45 NMEA RMC Time Code O P on P4 46 IRIG B Specification 47 Event Recording Specification 48 Tag Data 48 Tag Storage 48 Tag Retrieval 48 TCG 01 G Command Response Message structure 48 TCG 01 G Commands related to Event Time Tagging 49 Ps command Get Status 49 Notes concerning the ...

Page 5: ...The serial port is user configurable to output serial strings and report event data for units fitted with event recording capability Factory options include a choice of physical connectors BNC 2 pin plug and socket or ST Fiber Non fiber outputs can be ordered as TTL RS422 485 or high voltage switching All TCG 01 G units feature a front panel display Figure 1 giving visual feedback about the time d...

Page 6: ...ort through which the unit can be configured Firmware license options include a stratum 1 NTP server and IEEE 1588 2008 functionality When the IEEE 1588 PTPv2 option is enabled the unit can operate as a PTP grandmaster an ordinary PTP clock or a slave only clock 1 4 Accessories The TCG 01 G comes complete with Ethernet cables to allow for customization and easy setup from the Windows Configuration...

Page 7: ... LED shows the alarm status of the TCG 01 G LCD Display On initial power up the LCD display shows a copyright message along with the serial number and firmware version of the unit See 3 Start Up Clock ID After power up if the TCG 01 G is configured to operate in its default mode GNSS synchronized the display changes automatically to indicate that it is waiting for satellites Figure 4 Once one or m...

Page 8: ... Time and that the day is Tuesday LST denotes Local Standard Time If daylight savings time is active the LST in screen 6 changes to LDT denoting Local Daylight Time Figure 7 shows the UTC time and date which is 11 16 53 on the evening of Monday the 17th of March 2010 Figure 8 shows that an antenna current low alarm is active All active alarms will be displayed in the same way Up to three alarms ca...

Page 9: ...en reset It will typically take 20 minutes worst case two hours for the unit to gain sufficient GNSS synchronization for the TCG 01 G to recommence normal operation Position hold Satellites tracked 0 9 0 9 A E 10 14 F 14 This digit represents the number of satellites currently being used to compute the time solution A 0 value means that no updated time solution is available out of lock condition I...

Page 10: ...Protocol PTP master clock NTP Clock is synchronized to a Network Time Protocol NTP server TST Clock is operating with manually set time Test Mode Please refer to configuration tool Set Time function for further details Table 2 Alternative Sync Source If the TCG 01 G is configured with GNSS disabled or is a Fiber Slave variant then SL will be displayed in the status field if there is no available I...

Page 11: ...has no power on The TCG 01 G is synchronized to the source indicated by the LCD display Slow Flash 1 per second The TCG 01 G is operating in the holdover state holdover timer running Fast Flash 5 per second The TCG 01 G is not synchronized Out of Sync condition Table 3 SYN LED The ALM LED indicates the internal alarm status of the TCG01 G It has only two operating states State Description off The ...

Page 12: ...a 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 draw specification IRIG No IRIG B Input IRIG B monitoring is enabled on the P6A and or P6B input and a valid IRIG B signal is not present on that input IPe1 IPv4 Address Fault on ETH1 The cloc...

Page 13: ...his plug Maximum steady state power consumption is 6 W and surge protection is provided A mating connector is supplied that is suitable for wiring up to 1 5 mm2 The polarity of the DC power source is not important as both the unit and case are isolated from the supply input Check the label on the base or side of the unit for the power supply voltage rating before powering the unit A 5 A fuse of ap...

Page 14: ...t 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 Tekron antenna port expects a signal with at least 15 dB of gain and no more than 35 dB of gain with 20 35 dB being the optimal gain r...

Page 15: ...ther information or support go to www tekron com Approximate optimum length range 30 to 120 meters Approximate maximum length range 30 to 150 meters 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 in...

Page 16: ...Power MOSFET Switch allowing switching of 300 VA 100 mA max The port is fully floating and has independent electrical isolation rated to 2 5 kV Refer to Figure 11 for the suggested wiring configurations for use with Power MOSFET switching 2 pin Fiber ST fiber transmitters compatible with ST terminated multi mode fiber optic cabling λ 820 nm ST Fiber Examples of the three connector types are given ...

Page 17: ...e port as a whole has an isolation rating of 2 5 kV from all other ports Any P4 pins that are not being used may be left unconnected P4 Serial Strings The serial port can be configured to output any one of a number of different serial time messages on a broadcast basis The serial port runs at a user configurable data rate between 1200 and 38400 bps available rates are 1200 2400 4800 9600 19200 and...

Page 18: ...le for other types of signal and a 1 kHz carrier is present whenever the unit is powered The IRIG B data content is as specified by the Tekron Configuration Tool program Use either a coaxial cable or a shielded twisted pair cable to feed the signal from P5 to any connected IEDs When using shielded twisted pair connect the shield to ground The mark space amplitude modulation ratio is 3 1 and peak t...

Page 19: ... the rest of the system by a 2 5 kV barrier and the ports have a 60 VDC isolation from each other Each input is protectively clamped to 25 V and uses a 470 Ω resistor to limit the current Refer to the Event Recording Specification section of this manual for further information on the event recording feature P7 Sync Relay 4 pin 3 81 mm Connector P7 provides two alarm output channels P7 A is the GNS...

Page 20: ...r The Ethernet port ETH1 features a RJ 45 connector and supports 10 100 Mbps Auto MDI X and Auto Negotiate The LEDs convey Link LNK and Activity ACT status for the port The LNK LED will be illuminated when an Ethernet link has been achieved with a link partner whilst the ACT LED will be illuminated when there is activity on either the transmit or receive pair This port is also used to configure th...

Page 21: ...r further information or support go to www tekron com 5 SOFTWARE Configuration Tool The configuration tool software can be downloaded from the Tekron website www support tekron 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 Passwor...

Page 22: ...ated in Figure 9 Figure 9 TCG 01 G with rack mount bracket Earthing A wire from the earth stud to a known electrical earth is needed to earth the unit Note The paint on the unit s case is non conductive so earthing the rack the unit is mounted in isn t enough on its own a connection is also needed from the rack to the unit s earth stud The unit must be safety earthed whenever it is powered on usin...

Page 23: ...able before reporting that it is in sync The TCG 01 G performs stability validation on all incoming sync sources before reporting that it is in sync Reactivating a unit that was previously synchronized thousands of kilometers away from the present position will take longer but not more than 45 minutes As described in LCD Display the button on the front panel will toggle the display on the LCD and ...

Page 24: ...nd aggregated over both inputs In the event of pulses occurring simultaneously on both inputs both events are captured and recorded independently with the same time data The event recording option makes use of the same input connector P6 as the external IRIG B input function The user can retrieve time tags from the buffer using a request response protocol operating over TCG 01 G s P4 serial port i...

Page 25: ... 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 www tekron com Figure 10 Multiple Time Code Generators with one GNSS antenna GNSS Antenna P6 input P6 input TTL level IRIG B with C37 118 extensions P2 or P3 Master Ant Slave 1 Slave 2 ...

Page 26: ...d unreachable on the network due to incorrect settings provided that physical access to the unit is available This feature is disabled by default in order to maximize security and must be enabled via the Tekron Configuration Tool before it can be used When disabled there is no method to gain full access to the unit without the administrator password and if the administrator password is forgotten t...

Page 27: ...nnection from the load is then wired to one terminal of the P2 or P3 output and the other terminal of the P2 or P3 output is then wired to complete the circuit back to the other side of the power supply Do not connect the high voltage supply to P2 or P3 unless the high voltage option is fitted check the label on the base or side of the TCG 01 G unit Output isolation from chassis and other I O is s...

Page 28: ...y higher than the top of the GNSS antenna The GNSS antenna should then be mounted so that it lies within a 45 degree angle from the top of the other earth bonded structure The GNSS antenna mount itself should also be securely bonded directly to the building protection earth and not connected via any of the other earthed structures However this will not provide immunity from damage caused by a dire...

Page 29: ... no guarantee of protection against ALL surge related events including a direct lightning strike to the antenna Careful antenna positioning is strongly advised The performance of the antenna system under normal non surge conditions is unaffected by the introduction of a correctly installed Lightning Protector Installation The impulse suppressor should be installed as per the instructions provided ...

Page 30: ...0 mm Weight 800 g GNSS Receiver L1 GLONASS 1575 42 1598 1606 MHz Frequency C A Code 32 Channel parallel tracking receiver Performance Property Metric Position Accuracy Horizontal 9 m 90 Altitude 18 m 90 Timing Accuracy 15 ns 1 sigma to UTC Sensitivity Acquisition 148 dBm Tracking 160 dBm Input and Output Specifications Type Electrical Physical Accuracy at the port AM IRIG B00x1 modulated 8 Vp p BN...

Page 31: ...c Operating Temperature Range 10 65 C Electrical Specifications Performance Property Metric Power Supply Low Voltage 14 36 Vdc Medium Voltage 20 75 Vdc High Voltage 90 300 Vdc Power drain 6 W max Coded expressions 4 7 are supported See IRIG B specification 2Programmable pulses ranging from 1000 pulses per second to pulse per day Refer to configuration manual for full details ISOLATION AND PROTECTI...

Page 32: ...lt settings in the event that the administrator password is forgotten or if the clock is rendered unreachable on the network due to incorrect settings provided that physical access to the unit is available This feature is disabled by default in order to maximize security and must be enabled via the Tekron Configuration Tool before it can be used When disabled there is no method to gain full access...

Page 33: ...mA are employed for protection on the general purpose input Figure 12 TCG 01 G isolation zones Transformer isolation via a DC DC converter is used for the main power supply and for power to each of the logic output drive circuits The serial communications interface is also separately powered via the isolating DC DC converter High speed fixed delay opto isolators are used in each of the time sensit...

Page 34: ...pulse on P4 pin 1 that finishes precisely on the minute Timing Transmitted once per minute Sent during the last second before the minute rollover to which the data in the string refers Comms 9600bps 8 bit ASCII no parity Definition TyyMMDDwhhmmx CR LF Placeholder Content T ASCII T yy Last two digits of the year e g 12 the year 2012 MM Month 00 January 12 December DD Day of Month 01 31 w Day of wee...

Page 35: ...me Code O P on P4 About This code is compatible with IRIG Standard 212 00 Timing Transmitted once every second The leading edge of the start bit of the first character SOH is exactly on the second that the message describes Comms 9600bps 7 bit ASCII odd parity Definition SOH ddd hh mm ss CR LF Placeholder Content SOH Start of Header HEX 01 ddd Day of year range 001 366 HEX 3A hh hour 00 23 mm minu...

Page 36: ...adds a two character field containing the year and uses 8 bit ASCII no parity data format Timing Transmitted once every second The leading edge of the start bit of the first character SOH is exactly on the second that the message describes Comms 9600bps 8 bit ASCII no parity Definition SOH ddd hh mm ss yy CR LF Placeholder Content SOH Start of Header HEX 01 ddd Day of Year range 001 366 HEX 3A hh ...

Page 37: ...n form function and timing to String A Timing Transmitted once every second The leading edge of the start bit of the first character SOH is exactly on the second that the message describes Comms 9600bps 8 bit ASCII no parity Definition SOH DDD hh mm ssQ CR LF Refer to String A table above for the definitions of the common digits Quality Character Q Meaning HEX ASCII 20 space Clock in sync timing a...

Page 38: ...icator field Timing Transmitted once every second The leading edge of the start bit of the first character CR is exactly on the second to which the message data refers Comms 9600bps 8 bit ASCII no parity Definition CR LF Q yy ddd hh mm ss 000 Placeholder Content CR LF Carriage Return Line Feed Pair HEX 0D 0A Q Quality indicator in sync out of sync HEX 20 space yy Year 00 99 representing the last t...

Page 39: ...information in this document is provided for informational use only and is subject to change For further information or support go to www tekron com String D Time Code O P on P4 String D is IDENTICAL in content to String B but the second mark is at the leading edge of the start bit of the CR Example Interpretation SOH 112 12 34 36 CR LF day 112 time 12 34 36 100 µs sync error ...

Page 40: ...e year information and a sync indicator field Timing The string is transmitted once every second with the leading edge of the start bit of the CR exactly on the second Comms 9600bps 8 bit ASCII no parity Definition SOH YYYY ddd hh mm ssQ CR LF Placeholder Content SOH Start of Header HEX 01 YYYY 4 digit year HEX 3A ddd Day of year range 001 365 hh hour 00 23 mm minute 00 59 ss seconds 00 59 Q Quali...

Page 41: ...g is transmitted once every second with the leading edge of the start bit of the last BEL exactly on the second Comms 9600bps 8 bit ASCII no parity Definition CR LF 1100 CR LF 44hhmmss CR LF 54ddd CR LF CR LF 45HHMMss CR LF 55DDD CR LF BEL Placeholder Content 1100 ASCII 1100 44 ASCII 44 means local time follows hh Local hour of day 00 23 mm Local minute of day 00 60 ss seconds 00 59 54 ASCII 54 me...

Page 42: ...on STX swhhmmssddMMyy LF CR ETX Placeholder Content STX Start of Text HEX 02 s Clock Status see below w Day of Week see below hh hour of day 00 23 mm minute of day 00 60 ss seconds 00 59 dd day of month 01 31 MM month of year 01 12 yy year 10 99 CR LF Carriage Return Line Feed Pair HEX 0D 0A ETX End of Text HEX 03 CLOCK STATUS The s Clock Status is an ASCII character in the range 0 9 A F represent...

Page 43: ... only and is subject to change For further information or support go to www tekron com DAY OF WEEK The w Day of Week is an ASCII character in the range 1 7 9 A F representing a single hex digit nibble Bits 3 2 1 0 1 X X X UTC time X 0 0 1 Monday X 0 1 0 Tuesday X 0 1 1 Wednesday X 1 0 0 Thursday X 1 0 1 Friday X 1 1 0 Saturday X 1 1 1 Sunday Example Interpretation STX E3123456170410 LF CR ETX High...

Page 44: ...Content STX Start of Text HEX 02 D ASCII D HEX 3A colon dd Day of month 01 31 HEX 2E full stop MM Month of year 01 12 yy year 10 99 representing the last two digits of the year HEX 3B semicolon T ASCII T w Day of Week 1 to 7 1 Monday U ASCII U hh Hour 00 23 mm Minute 00 60 ss Second 00 59 u ASCII hash if not synchronised since last reset or space HEX 20 if synchronised since last reset v ASCII ast...

Page 45: ...00bps 8 bit ASCII no parity Definition GPZDA hhmmss 00 dd mm yyyy s xx yy CC CR LF Placeholder Content GPZDA ASCII GPZDA ASCII comma hh UTC hour of day 00 23 mm UTC minute of day 00 60 ss UTC Seconds 00 59 00 ASCII 00 dd UTC day of month 01 31 depending on which month mm UTC month 01 12 01 January yyyy UTC year 4 digits s Local time zone offset sign positive means local time leads UTC xx Local tim...

Page 46: ... the is exactly on the second Comms 9600bps 8 bit ASCII no parity Definition GPRMC hhmmss 00 a tttt tttt N ggggg gggg W 0 0 0 0 DDMMYY 0 0 E CC CR LF Placeholder Content GPZDA ASCII GPRMC ASCII comma hhmmss UTC hour of day minute of day seconds ASCII full stop 0 ASCII 0 a Status A valid V invalid tttt tttt Latitude degrees minutes 0000 0000 8959 9999 N Latitude north south N north S south ggggg gg...

Page 47: ...DCLS no modulation pulse width code no carrier is used and with Manchester modified and amplitude modulation AM only the 1khz carrier is supported Therefore Tekron products support IRIG B00x IRIG B12x and IRIG B22x where x is the coded expression For the coded expression BCDtoy and BCDyear are always included in the signal but straight binary seconds SBS are only included if binary seconds in code...

Page 48: ...first Tag Retrieval The user can retrieve time tags from the buffer using a request response protocol operating over the TCG 01 G s P4 serial port interface Tags are retrieved from the buffer oldest data first The TCG 01 G can be configured to broadcast either status or serial time strings over the serial port Most users of the time tag option will want to suppress all broadcast outputs to simplif...

Page 49: ... LF Response 33 bytes 0 32 Received format Ps 26 data bytes cs CR LF Byte Description Data bytes only bytes 4 29 in received message 4 Antenna feed fault A only if antenna line is short or open circuit 5 No GNSS Solutions T only if no satellites are available for time calculations 6 S N level low S only if S N level is abnormally low for more than an hour 7 Oscillator Error High X only if Oscillat...

Page 50: ...e is no alarm condition present 1 The TCG 01 G can track up to 32 satellites simultaneously The message limitation of 9 is to retain compatibility with older equipment using this message format 2 Mode 1 Satellite search 2D 3D fix Mode 2 GNSS Automatic site survey Mode 3 GNSS position hold most accurate time Pc command Clear Time Tag Buffer The Pc command invokes a Pc response that returns the numb...

Page 51: ...Fraction of Second in ASCII 100 s of nanoseconds 0000000 9999999 24 Quality Indicator Codes are ASCII space hex 20 if receiver locked sub 100 ns Output accuracy ASCII hex 3F if receiver unlocked for more than 1 minute ASCII hex 2A if receiver in alarm mode antenna fail 25 27 Outage Indicator 000 999 Hours since receiver was last locked to GNSS signals Becomes non zero one hour after loss of lock R...

Page 52: ...NTY For terms and conditions of Tekron s Warranty see the Web Site http tekron com about tekron warranty WARNING This product has been designed to comply with the limits for a Class A digital device pursuant to Part 15 of FCC rules These limits are designed to provide reasonable protection against such interference when operating in a commercial environment Notes Ethernet is a trademark of XEROX C...

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