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TCG 01
User Manual
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Tekron TCG 01 User Manual

TCG 01
TIME CODE GENERATOR
User Manual
9thEdition
www.tekroninternational.com
TCG-01
Revision History:
Time Code Generator User Manual
9thEdition
February 2007
This document supports all TCG-01 with firmware revision D1—D8
R
R4 For 0, A-B TCG-01 R5 For 0, A-B and C4-C7 TCG-01 R6 All C and D up to D1 version TCG-01 R7 All C and D up to D1 version TCG-01 R8 All C and D up to D4 version TCG-01 R9 (This document) For D up to and including D8 version TCG-01
www.tekroninternational.com
TABLE OF CONTENTS
1 INTRODUCTION....................................................................................................1
2 INSTALLATION ......................................................................................................2
2.1 Packing list..................................................................................................................................... 2
2.2 Mounting ....................................................................................................................................... 2
3 OPERATION ............................................................................................................3
4 FRONT PANEL........................................................................................................3
4.1 LCD Display ................................................................................................................................... 4
4.2 Front Panel LED Indicators: ...................................................................................................... 6
5 CONNECTIONS......................................................................................................7
5.1 P1: Power Input ............................................................................................................... ........... 7
5.2 Ant: Antenna connector (SMA plug)..................................................................................... 7
5.3 P2, P3: Outputs............................................................................................................................. 8
5.4 P4: RS232 I/O (Serial port plus programmable output) ................................................ 9
5.5 Earth stud.....................................................................................................................................10
5.6 P5: BNC output .........................................................................................................................10
5.7 P6: Event Recording Inputs or External Sync Input........................................................ 11
5.8 P7: Sync Relay .............................................................................................................................11
5.9 P8: NTS – network time-server (optional)......................................................................... 12
6 SPECIFICATIONS .................................................................................................13
6.1 Dimensions ..................................................................................................................................13
6.2 Identification............................................................................................................................... 13
6.3 Programmable outputs (P2, P3, P4-pin1) .........................................................................13
6.4 Isolation & Protection ..............................................................................................................14
7 FACTORY HARDWARE OPTIONS...................................................................15
7.1 TCG 01 High Voltage Output Option .................................................................................15
7.2 Power Supply Options .............................................................................................................16
7.3 Lightning Protection Option ................................................................................................. 16
7.4 Multi-port Hub Option............................................................................................................ 16
8 TCG 01 CONFIGURATION SOFTWARE.........................................................17
8.1 Introduction ................................................................................................................................17
8.2 Local Time Settings...................................................................................................................18
8.3 General Options .........................................................................................................................18
8.4 Programmable Outputs........................................................................................................... 20
8.5 IRIG-B Options ........................................................................................................................... 22
TCG 01 User Manual
9thEdition: February 2007
8.6 Local/UTC Selection ................................................................................................................. 22
8.7 Network Time Server Configuration................................................................................... 23
8.8 Visible Satellites......................................................................................................................... 23
APPENDIX A ANTENNA DETAILS ........................................................................25
A.1 Antenna Cable Specification ................................................................................................. 25
A.2 Antenna Specification ............................................................................................................. 26
A.3 Antenna Assembly .................................................................................................................... 26
APPENDIX B LIGHTNING PROTECTION OPTION ...........................................28
B.1 General ......................................................................................................................................... 28
B.2 LPK01 Kit Contents ................................................................................................................... 28
B.3 Installation................................................................................................................................... 29
B.4 Disclaimer .................................................................................................................................... 31
APPENDIX C EVENT TIME-TAGGING OPTION ................................................32
C.1 Introduction................................................................................................................................ 32
C.2 TCG 01 Command / Response Message structure ......................................................... 33
C.3 TCG 01 Commands related to Event Time Tagging ...................................................... 33
APPENDIX D NETWORK TIME SERVER OPTION .............................................36
D.1 Configuration Requirements................................................................................................. 36
D.2 Methods for Accessing Set-Up Mode ................................................................................ 36
D.3 Using Telnet to access Set-Up Mode.................................................................................. 37
D.4 NTS Set-Up Mode Menu ........................................................................................................ 38
D.5 Time Server Operation ............................................................................................................ 40
APPENDIX E SERIAL OUTPUT STRINGS.............................................................42
E.1 NGTS Time Code O/P on P4.................................................................................................. 42
E.2 IRIG J-17 Time Code O/P on P4 ........................................................................................... 42
E.3 String-A Time Code O/P on P4 ............................................................................................ 43
E.4 String-B Time Code O/P on P4............................................................................................. 43
E.5 String-C Time Code O/P on P4............................................................................................. 44
E.6 String-D Time Code O/P on P4 ............................................................................................ 44
E.7 String-E Time Code O/P on P4 ............................................................................................. 45
E.8 String-F Time Code O/P on P4 ............................................................................................. 45
E.9 NMEA ZDA Time Code O/P on P4....................................................................................... 46
E.10 NMEA RMC Time Code O/P on P4...................................................................................... 47
WARRANTY STATEMENT..........................................................................................48
TCG 01 User Manual
Figure 1 – TCG-01 Front Panel
9thEdition: February 2007
1INTRODUCTION
TCG 01 Time Code Generators produce precision time code signals, serial strings and pulses for use in synchronising industrial control and SCADA equipment. They are ideally suited to providing time synchronisation simultaneously to many different devices, such as Remote telemetry Units (RTUs), Protection Relays and other Intelligent Electronic Devices (IEDs) used in electrical sub-stations and industrial control installations.
The TCG 01 features one AM Modulated IRIG-B output, three programmable outputs and a serial port which is user-configurable to output serial strings and report events for units fitted with event recording capability. Factory options include an embedded Network Time Server, and a choice of output connectors: BNC, 2-pin plug, or ST Fibre. Non-fibre outputs that can be ordered are TTL, RS422, or high voltage switching.
All TCG 01 units feature a front panel display, giving visual feedback about the time data being generated on the outputs. LED indicators provide “at a glance” status information.
The optimised receiver/antenna system used by TCG 01 obtains time with similar to atomic clock precision from the GPS satellite constellation. The result is output timing accuracy similar to that normally seen only in laboratory instruments.
However, unlike laboratory instruments, TCG 01 is suited for hostile electromagnetic environments such as sub-stations and electrical switchyards. Each output of the TCG 01 is isolated from every other output, so that attached wiring can feed out to operating areas in different earth potential zones without compromising the overall site earthing security. Further isolation protects the internal electronics, and transient suppression devices protect i/o from both longitudinal and transverse high voltage events.
TCG-01 occupies less than half the width of a 1U rack space. It is supplied complete with all hardware and software required for installation, including rack-mount kit, connectors, 30m lead-in antenna cable, and antenna.
F
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GPS Antenna:
2INSTALLATION
2.1 Packing list
Each TCG 01 kit is shipped with the following:
x TCG 01 Time code generator x User Manual – this document x GPS Antenna optimised for stationary applications, with pedestal for pipe mount x Antenna lead-in cable fitted with matching connectors x 19” Rack mounting Plate & fasteners x Matching plug-in connectors x RS232 Interface cable x Configuration Software
2.2 Mounting
The clock is designed to be mounted in a 19” rack, but may be used on a bench. The unit is attached to the rack mount plate via the four screws shipped installed in the four corners of the front panel.
G
page 25. The antenna should be located in a position with as clear a view of the sky as possible, over as wide an angle as possible.
“lightning-protected zone” as far as is possible.
there is at least one other earth-bonded structure located in the same rooftop area (e.g. another antenna, or a lightning rod) that reaches significantly higher than the top of the GPS antenna. The GPS Antenna should be mounted so that it lies within a 45-degree angle “skirt” from the top of the other earth-bonded structure. The GPS antenna mount itself should also be securely bonded directly to the building protection earth – and connected via any of the other earthed structures.
A lightning protection kit is available for installation in the antenna lead-in cable for additional protection of the equipment. (See section 7.3 on page 16 for details.)
All TCG 01 antenna installations should follow the guidelines above.
Detailed antenna mounting instructions are contained in Appendix A on
The antenna should also be mounted in a
In practice, this means ensuring that
not
TCG 01 User Manual
P1
Figure 2 – TCG 01 Front Panel
LCD DISPLAY:
SYN LED:
GPS LED:
9thEdition: February 2007
3OPERATION
Connect the antenna lead and the antenna (with a good view of the sky). Then connect the power source to P
Check the label on the base for voltage requirements before switching on!
The time required that will achieve tracking and synchronisation given a good “view” of the sky is typically within a minute. Although reactivating a unit that was previously synchronised 1000’s of km away from the present position will take longer but not more than 45 minutes.
.
4FRONT PANEL
TCG01featurestwoLEDindicatorsonthefront panel, together with a 2-line by 16­character LCD display. The display is optimised for viewing straight on, or from below, as the clock is a lightweight device, normally mounted at eye level or higher in an equipment bay.
The display unit updates every second, displaying day, date, time, and time offset from UTC. It also provides more information on the GPS receiver operation. A recessed push-button located on the front panel between the two indicator LED’s is used to switch between display pages.
This LED operates in parallel with the Sync Relay, and is active at all times when the unit is operating with time code outputs accurately tracking the GPS time signals.
Flashing cadences indicate the status of the GPS receiver.
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Figure 3 – LCD display screens
4.1 LCD Display
The LCD display shows a copyright message, along with the serial number and revision level of the unit for approximately 10 seconds following power-up, (Figure 3[a]). The display then automatically changes to the operating default, (Figure 3[b]). The user may cycle between all four of the screens by pushing the recessed pushbutton on the front panel between the LED indicators. The display examples below all show the same instant in time.
TEKRON TCG01-D:0 (C)2003 Sn02749
UTC+1200 17MAR03 076 11:16:53 87A
[a] Start Up (Clock ID) [b] Operating Default
LST:MON 17 MAR03 076 11:16:53 87A
UTC:SUN 16 MAR03 075 23:16:53 87A
[c] Local Time [d] UTC Time
F
The top line of screen [b] shows the UTC offset in hours and minutes and the local date. The local day-of-year and time-of-day are on the bottom line.
The rightmost bottom three characters provide satellite tracking information. “UTC” denotes UTC time (similar to GMT) while “LST” denotes Local Standard Time. If daylight savings time is active, “LST” in screen [c] changes to “LDT”, denoting Local Daylight Time.
Screen [b] shows that the clock is operating with a local time offset of 12 hours ahead of UTC. The local date is 17
th
March 2003, and the local time is 11:16:53 in the morning.
Screen [c] shows the same time and date, but also indicates that the time displayed is Local Standard Time, and that the day is Monday.
Screen [d] shows the UTC time and date, which is 11:16:53 on the evening of Sunday 16 March 2003.
4.1.1 Satellite Tracking Status
LST:MON 17 MAR03 076 11:16:53 87A
Satellites in sky Satellites tracked Receiver status
Character Values Description
TCG 01 User Manual
9thEdition: February 2007
Display screens Figure 3: [b], [c] and [d] all show a three-character status field at the bottom right-hand side of the display. This three-character field provides feedback on the parameters that affect the operation of the GPS receiver.
Satellites
in sky
Satellites
Tracked
Receiver
status
“0”=0
“9”=9
“A”=10
“B”=11
“C”=12
“0”=0
“9”=9
“A”=10
“B”=11
“C”=12
Represents the total number of satellites currently present in the
:
sky according to the GPS almanac. “0” in this position means that TCG 01 has lost its knowledge of the GPS satellites’ orbit geometries. This occurs if the unit has been in storage for an extended period, or if the GPS receiver has been reset. It may take up to two hours for the TCG 01 to operate normally again.
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 “Sync Hold” time (See |section 8.3.1
on page 18) the clock will indicate the “out of sync” condition described under section 4.2.1 Warning Status Indications below.
“A” TCG 01 in Acquisition mode --attempting to get satellite fixes
“G” “Poor satellite geometry”: Satellites are positioned in almost a
straight line so best accuracy cannot be obtained, but the unit willstillsynctoUTC.
“2” A 2D position is in use (no height). This may occur before
“3” A 3D position is in use, which includes height. A site survey
“S” Site Survey in progress. TCG-01 is calculating an accurate
“P” “Position hold”: Position is known accurately, and the GPS is
Position Hold mode has been reached if only 3 satellites are tracked. Synchronisation is not compromised.
begins next, so this mode is rarely seen.
position; once complete the mode will change to Position hold.
providing its most accurate time, better than 60ns to UTC.
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4.2 Front Panel LED Indicators:
The GPS LED shows the status of the GPS receiver, while the SYN LED shows the status of the time synchronisation to UTC reference time derived from the GPS satellites.
By default, all outputs become active within a few seconds of initial power-up even when the unit is precise until the unit is synced to the GPS satellite
4.2.1 Warning Status Indications (SYN LED = OFF)
When the SYN LED is off, TCG-01 is not guaranteed to be synchronised to UTC time. The sync relay is deactivated (“C” is connected to “NC”).
GPS LED SYN LED Interpretation
not
synced to GPS satellite time! Output time data is not
•••• ••••
OFF Antenna fault: The GPS antenna is not connected,
4 short flashes/second
•• •• •• ••
or is short or open circuited (faulty).
OFF The GPS antenna is good, and the unit is
2 short flashes/second
searching the sky for satellites to begin the sync process.
On D4 and later version TCG-01s, a “test mode” is available that when activated will cause all TCG-01 outputs including the sync relay to behave as if they are in sync, even if they are not. This can be useful for testing the operation of external IED when a connection to a GPS antenna is not available.
4.2.2 Sync Status Indications (SYN LED = illuminated)
When the SYN LED is on, TCG-01 is synchronised to UTC time. All of the clock outputs are accurate and are usable for sync purposes and the sync relay output is activated.
GPS LED SYN LED Interpretation
••••••••••••••••••••••••••••••••••••••••••••••••••••••••
ON Time accuracy is within 500ns of UTC time. Long on – short off once every second
••••••••••••••
ON Time accuracy is certainly within 60ns and is typically Short on – long off once every second
within 40ns of UTC time
TCG 01 User Manual
Figure 4 – Rear Panel of TCG 01, with 2-pin connectors (P2 and P3) and NTS output (P8)
9thEdition: February 2007
5CONNECTIONS
F
5.1 P1: Power Input
Power is applied to the unit via this plug. Maximum steady state power consumption is 6W, and surge protection is provided. Despite the markings on P1, the polarity of the power connection is power source. A mating connector is supplied that is suitable for wiring up to 1.5mm
not
important and the unit is fully isolated internally from the
2
.
The casing is isolated from the power supply inputs so that either (or neither) power supply polarity can be earthed to station earth.
The input voltage range is marked on the option label that is attached to the underside of TCG-01. The section Power Supply Options on page 16 has a list of orderable ranges.
Check the label on the unit base for power supply voltage ratings!
5.2 Ant: Antenna connector (SMA plug)
The “ant” antenna input provides an interface for an external active antenna via low-loss coaxial cable, 50ȍ impedance. 5V DC @ 50mA max is supplied to power an active antenna. The total combined gain of the antenna system (antenna plus cable and connectors) should fall in the range of 10 to 35 dB, the optimum being 22dB.
TCG 01 is normally supplied complete with a timing-optimised narrow-band antenna and 30m of lead-in cable, this combination provides an overall gain near the optimum of 22dB (see Appendix A on page 25). For lead-in lengths longer than 60m, either
amplification and/or larger diameter, lower loss cable can be supplied to order.
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!
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Figure 5 – 2pin
connectors
Figure 6 – BNC
connectors
Figure 7 – Fibre
connectors
A Lightning Protection device may 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 (see Section 7.3 on page 16). Introduction of the Lightning protector does not degrade the performance of the antenna system.
5.3 P2, P3: Outputs
5.3.1 Electrical and Physical Configuration
F
Each output port may be fitted at the factory according to the following:
Electrical Electrical Specification Physical
TTL CMOS/TTL (5V) logic level driver output ports, 150mA sink
and source. The port is fully floating and has independent electrical isolation to 2.5kV
RS422 High Speed RS422 compliant output ports. The port is Fully
floating and has independent electrical isolation to 2.5kV.
HV MOSFET
Fibre ST fibre transmitters, compatible with ST-terminated 62.5ȝm
Power MOSFET Switch, allowing switching of 300VA, 1A max. The port is fully floating and had independent electrical isolation to 2.5kV. See the detail in Section 7.1 on page 15 for suggested wiring configurations for use with Power MOSFET switching.
fibre diameter, 125ȝm jacket diameter multi-mode fibre optic cabling. The maximum length of fibre recommended is 700 metres.
2-pin or BNC
2-pin or BNC
2-pin
ST Fibre
TCG 01 User Manual
pin 2
pin 3
pin 5
pin 1
pin 5
9thEdition: February 2007
5.3.2 P2, P2 programmable signals
The user may configure P2 and P2 to output in either inverted or non-inverted polarity:
x A user configurable number of pulses per second, minute, hour, day with
adjustable pulse-width and offset.
x IRIG-B and DCF-77 time codes.
Refer to page 13 for further information:
5.4 P4: RS232 I/O (Serial port plus programmable output)
An RS232 port (+/-9V signal levels) is implemented via 9-way “D” male connector with signal lines: p
01), p
(serial data IN to TCG 01) and p together with a programmable signal output on p programmable output shares the p
(serial data OUT from TCG
(signal ground)
(signal ground).
.The
Do NOT over-tighten the securing screws of the connector!
TCG 01 is normally shipped as a DCE configuration, a “straight-wired” Socket-to-Socket 9-way data cable can be used to connect directly to a standard PC serial port. (A suitable 2m cable is included with each TCG 01/TCG 01F.) The CTS and DSR functions are permanently asserted, so the serial port does not support hardware handshake control.
The RS232 signal lines are not HV-isolated from each other, but the port as a whole is isolated to a level of 2.5kV from all other ports.
5.4.1 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 fixed baud-rate of 9600 baud. Message formats typically operate at 8-bit no parity, no flow control, 1 stop bit, and are transmitted once per second.
A wide range of message strings, and protocols are output on this port. They include:
x NGTS protocol x IRIG J-17 x Six preset messages, String/Tekron A—F for compatibility with most IED. x In TCG 01 version D8 and later, NMEA ZDA and RMC messages are available. x GPS Binary/Messages, these are subject to change without notice.
See |Appendix E on page 42 for details of each of the message string formats.
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5.4.2 P4 pin 1 Programmable Output
The user may configure P4 pin 1 to output in with inverted or non inverted polarity:
x A user configurable number of pulses per second, minute, hour, day with
adjustable pulse-width and offset.
x IRIG-B and DCF-77 time codes.
Refer to section 6.3 on page 13 for further information:
5.5 Earth stud
An M4 bolt (to chassis) is provided for earthing of cable shields. This is located under the serial port to the left of the P4 designator.
5.6 P5: BNC output
P5 provides amplitude modulated IRIG-B (B12x) over a BNC connector.
Use either coaxial cable or shielded twisted pair, to feed signal from P5 to any connected IED. When using shielded twisted pair, connect the shield to ground.
The mark/space amplitude modulation ratio is 10:3, and peak to peak output level is 8 volts (max), 100: impedance. The output is fully floating, and is transformer-isolated to a minimum of 2.5kV.
not
This output is present whenever the unit is powered. The particular IRIG-B data content is as specified by the configuration program (refer to IRIG-B Options on page 22).
Most devices with amplitude-modulated IRIG-B time sync inputs have an input impedance of between 4k: and 20k:, and maximum allowable peak- to-peak level of 6V or so. The P5 o utput on TCG 01 is designed to drive many of these devices all in parallel, with a terminating resistor (typically 100-180 ohms) fitted at the far end of the coax line feeding all of the attached loads. In this way P5 can drive at least 20, and typically 30 or more devices without any external amplification required. The terminating resistor is essential to ensure good noise immunity.
programmable for other types of signal, and the IRIG-B code is
Page 10 of 49
TCG 01 User Manual
9thEdition: February 2007
5.7 P6: Event Recording Inputs or External Sync Input
Two input channels with common return that may be driven by TTL logic levels. This port is implemented via a 2-pin plug-able connector. Wiring
2
size is up to 1.0mm
“C” is the common reference (0V), and “+2” and “+1” are TTL inputs 2 and 1 respectively. Input burden is 7mA at 5V.
P6 is used for:
x Event time tagging or “event recording” on units with this option fitted. For a full
description, see Appendix C on page 32.
x Synchronisation of TCG 01 to an external IRIG-B signal, only in D4 or later
firmware. See Section 8.3.7 Sync to IRIG-B Input on page 20 for further information on using this feature.
5.8 P7: Sync Relay
and the input is isolated to 2.5kV.
A set of isolated changeover relay output via 3-pin plug-able connector – capable of switching up to 2A at 230V AC, or 300mA at 150V DC.
2
Wiring size is to 1.0mm
using the supplied mating plug. Isolation is
2.5kV minimum.
This relay is active (“C” and “NO” connected) whenever the TCG 01 has established stable time sync from the GPS satellites. The active relay output indicates that all of the other output signals are operating within specification. The connector
2
accommodates 1mm
cabling.
TCG 01 will remain accurate for a time after the loss of satellite sync, and the sync relay can be configured to remain active (indicating “in sync”) for a period following the loss of satellite signals. The default period is one minute, but this can be altered up to a maximum period of 42 minutes and 30 seconds (2550 seconds).
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