SERTEL T-GPS-300 User manual

SERTEL ELECTRONICS (PVT)LTD COMPANY PROFILE
Dear Customer,
GPS Based time synchronization for various equipments of electrical / Instrumentation and
computers.
Ref: - Power generation / Distribution
With reference to the above we are glad to inform you and also introduce ourselves that we are the
manufacturers of time synchronization with an accuracy of 1 micro sec for time stamping. This time stamping
will facilitate to identify the problem First caused / trip to another where by all contactors / Relays connected to
cascading operation.
The salient features of the Synchronisation system which is as following:
Master Clock and Slave Clock
•Synchronized to GPS receiver (through satellite)
•The slave clock can be connected to entire factory at various locations displaying the same time
through out the factory in terms of hour min & Sec.
Time Synchronization
a) Electrical equipments Synchronization
Time synchronization synchronizing the electrical parameters such as event recorder, disturbance
recorder, fault recorder and sequential event recorder. PLC’s, data acquisition system and other
intelligence or RTU (remote terminal unit).
b) Instrumentation Synchronisation
Intelligence instrumentation PLC’S, DC’S, DAS, SCADA and other
intelligence RTU’S
c) Networking of Computers
Various computers connected through landline with Ethernet synchronization by TCP/IP with 10 base T
or 100 base T with RJ 45 connector connected to the hub. We have also developed NTP server, NTP &
SNTP broadcast, NTP client to synchronies many computers.

We can give time synchronization output for various above equipment
requirement with any number of outputs such as Pulse, Potential free contact, IRIGB,
RS232, RS485, BCD output also IPPS, IPPM, IPPH and for computers TCP/IP, network
time protocol synchronization with any distance by using appropriate access such
as line drivers, line receiver and also convectors RS485/232 convertor for
synchronization of time with an accuracy for 1 micro sec.
d) Frequency Monitoring
With an advantage of time reference of atomic clock we can generate frequency 50HZ as standard
frequency. This can be monitored with a raw mains frequency generated. These both frequency are monitored,
differentiated and integrated with respect to time of your choice with a period of 15,30,45,60 sec’s with an
accuracy of 0.001HZ as a close monitoring for the healthy power of generation/ distribution. This also can be
monitored at various location of your plant similar to slave clock of time display the frequency can be
displayed at various locations with various character size of the display.
e) Power MonitoringBy using appropriate transducers of watt transducer, var transducers (i.e. active
and reactive power) with an analog output of 4 - 20 MA can be converted into digital input and monitored and
can be displayed with respect to standard time and std frequency to indicate any periodicity of active power
and reactive power monitored and can be connected to computer for report generation. WATT/VAR display
to many location similar to slave clock with large display for difference viewing.

f)Calibration for frequency With advantage of atomic clock time we convert various
frequencies and they are synthesized to give a very stable frequency available at all times
traceability to national standard can be used to calibrate a frequency based instruments such as
oscilloscope, wireless equipments, test and measuring instruments, time period recorders, walky-
talkies and other related frequency based equipments.The above five parameters can be housed on
a integrated panel to house to 19 inch rack with a power supply and battery charger to give
uninterrupt power for the functions of the above system. We here by SERTEL manufacturers time
and frequency indigenously and available at all times.We are enclosing herewith our user’s list for
your per usual and we are proud to associate with yourself and all the systems we are glad to
inform you
Ourselves that our system are operating on all 24hrs, 365 days continuously with a rugged
design for uninterrupt operation.

We are also enclosing our catalogue and other range of products, which we are manufacturing
systems, and products. We are glad to associate with yourself on your projects, which would give us
immense pleasure in executing to the satisfaction of both of us with an advantage of helping each
other for mutual benefit.
We request you to kindly send us your valuable enquiry and also register our name in your
vendor’s list.
We are also glad to inform you that our products are approved by various consultant agencies to
name important companies such as NTPC, Power grid, EIL, TCS, Tata power, BSES, Reliance
power, GAIL and other consultancy also. In case if you can inform us as your consultant we are
glad to take an approval to enable yourself to use our equipment for your projects.
Yours faithfully,
For SERTEL ELECTRONICS PVT. LTD
R. GOPALAN -CHIEF EXECUTIVE
R. PRABAKARAN – DIRECTOR
SERTEL ELECTRONICS PVT. LTD
377, NEHRU NAGAR I CROSS STREET
OLD MAHABALIPURAM ROAD
CHENNAI 600 096
SOUTH INDIA
Phone : [phone] / 4062 FAX [phone]
Email : [email protected] (or) [email protected]

INDUX
Pages
1. INTRODUCTION 1
2. TIME SYNCHRONISATION SYSTEM 2 – 3
3. SERTEL RS 232 OUTPUT 4 – 5
4. RS 232 PC Application Software Installation Procedure 6
5. TCP-IP OUTPUT 7
6. TCP-IP Output PC Application Software Installation 8 – 9
7. PFC / PULSE Output Thumbwheel selection procedure 10 – 11
8. PFC / PULSE Output Selector switch selection procedure 12 – 13
9. IRIG B Output 14 – 15
10. DCF 77 Output 16 – 20
11. Slave Output 21
12. OPERATION 22
13. Future of GPS Receiver 23
14. Alarms Output 24
15. Warranty 25
16. TEST CERTIFICATE
17. WIRING DRAWING
18. CIRCUITS

- 1 -
I. INTRODUCTION :
Global Positioning System is an absolute system to provide continuously the following to unlimited
users.
3 dimensional Position Fixing (Latitude; Longitude & Altitude).
Velocity ( Speed/Course ) measurement by detecting the Doppler shift in the radio signals emitted
by GPS Satellites.
a) Time Reference generation, utilising the fact that the system is operated on a common precise
time base.
b) GPS provides continuous worldwide coverage, 24 hours a day under any weather conditions.
c) Satellites distributed in 6 orbital planes (4 in each plane) spaced around the equator, pass over
the earth at an altitude of approximately 20,000 kilometers. Each satellite has an orbital
period of 12 side real hours (11 Hrs. and 58 Mnts. of civil time). A single satellite will orbit the
earth twice a day, tracing the exact foot print path; but passing 4 minutes earlier than the day
before. This ensures that at least 4 satellites will be in view at any time above any point on
earth. Each GPS satellite bears an ultimate precision clock utilizing Rubidium-Cesium
oscillation whose accuracy is comparable to Inter national Atomic Time.
d) GPS Receiver collects the data from GPS Satellites and out puts a time base pulse (1PPS) every
second in precise synchronisation with UTC/IST. Each 1PPS Pulse is accompanied by a Serial
Data packet output ( A real time data comprising of Year, Month, Date, Hour, Minute and
Second), which is a time stamp for that pulse. This output is utilised by Master Clock to
synchronise its time with UTC/IST with a maximum uncertainity of 1 micro second and
generate various outputs to synchronise any number of digital clock /microprocessor based
systems.
e) GPS system is sponsored and operated by US Department of Defence. Civilian access to the
system is guaranteed through an agreement between US DOD and US DOT (Dept. of
Transportation) and is subject to US Govt. Selective Availability (SA) policy
f) The Global Positioning system (GPS) is operated by the U.S.DOT and is subject to U.S.
Government selective availability (SA) Policy. SERTEL is not liable for the degradation by SA
Users are expected to be familiar with system and make . Full use of it with their own
responsibility.
g) SERTEL Electronics Pvt. Ltd reserves the right to make changes to our products any
specifications without notice.
Contd…

-2 –
II SERTEL TIME SYNCHRONISATION SYSTEM
a) GPS ANTENNA
Model : GPA-014
Type : Helical
Mount : Fixed (necessary mounting brackets will be provided)
Axial ratio : 5 dB
Co-axial cable : Low Loss Coaxial Cable (0.33 dB/metre), 50 metre along
with matching connection
Connector : BNC-J
Total gain : Over 30 dB
Noise figure : Less than 2.6dB
Supply Voltage : 5 V DC
Operating Temp. : -30 to +80 Deg.C
Storage Temp. : -40 to +85 Deg.C
Dimensions : Bottom ∅: 32mm
Top ∅: 69 mm
Length ∅: 85 mm

Contd…
-
-3 -
b) GPS RECEIVER
Model : T-GPS-300
Type : Micro Controller type
Display : Backlit LCD display 24 Hours format
Time Accuracy : Better than 1 PPM
Satellite Sig- Input : 1575.14 MHz from Antenna
Antenna i/p Connector : BNC (F) CONNECTOR For ANTENNA Input
Front Panel : 1. LCD Display ( Julian days, HH,MM,SS-
DD, MM,YY,Latitude,Longitude,Day of weake
Status and number of satellites ),
2. Power, Watchdog,GPS Lock, Event, GPS Data
Indicators LED
Supply Voltage : 90 to 260V AC/DC (Other Supply Voltage Consider )
Back Panel : AC VOLT input terminal , Fuse, On/Off switch ,
output terminal and selector switches
Environments : Temp. : 0-50 deg.cen
RH : Up to 95% non condensing
Mounting : To suit Standard 19” Rack System
Dimension : Width : 484 mm(W) X 325 mm(D) 3U (H)
Contd…

- 4 -
OUTPUT FROM GPS RECEIVER MODEL No T-GPS-300
RS 232 Serial port output
SERTEL provide a serial asynchronous bi-directional data port . The serial data port is
factory configured with RS 232 (standard) signal level. RS 232 output is compatible
electrically and mechnically with the EIA standard RS 232C as described for data terminal
equipment (DTE)
9 pin ‘D’ Connector (M) pin connections
Pin Connections
1. ………… NC
2. ………….. RS 232 output
3. ………….. NC
4. …………. NC
5. …………. Ground
6. …………. NC
7. ………… NC
8. …………. NC
9. …………. NC
RS 232 output from SERTEL as follows :
Level ……. ASCII
Data Length …… 8 bit
Baud rate ……..9600
Event ……. Nun
Stop bit …….. 1
Data transmission every second

-5-
RS 232 format
$ 30 XX XX XX XX XX XX CR LF
LINE FEED
CAR-RET
YEAR
MONTH
DAY
SECOND
MINUTE
HOUR
STATUS
START

RS 232/485 INTRODUCTION HAIL FORMAT
SERTEL provide a serial asynchronous bi-directional data port . The serial data port is
factory configured with RS 232 (standard) signal level. RS 232 output is compatible
electrically and mechnically with the EIA standard RS 232C as described for data terminal
equipment (DTE)
9 pin ‘D’ Connector (M) pin connections
Pin Connections
1. ………… NC
2. ………….. RS 232 output
3. ………….. NC
4. …………. NC
5. …………. Ground
6. …………. NC
7. ………… NC
8. …………. NC
9. …………. NC
RS 232 output THL format :
Level ……. ASCII
Data Length …… 8 bit
Baud rate ……..2400
Event ……. Nun
Stop bit …….. 1
Data transmission every second
PROTOCAL : XXX ; XX ; XX ; XX ? ; XXXX CRLF
Julian hour minute second year
day

-6-
RS 232 PC Synchronisation, Software Installation Procedure
Service Name: Sertel time synchronisation system
Input: RS232 - Sertel Format
OS Platform: WinNT/Win2000/Win2003/WinXP
Synchronisation at: Every Minute
Steps to follow ( to register a timesync service):
---------------------------------------------------
1. Copy RS232 folder into c:\ as (c:\RS232)
2. Click "start"
3. Goto "Run" and type "command" and click "OK" button
4. The MS-DOS Screen will display in front of you.
5. type c: then press enter
6. type cd\ then press enter
7. type cd RS232 then press enter
8. Now verify that you are in c:\RS232>
9. Now type "sc create timesync binpath= c:\RS232\rs232.exe"
10. type cd\ then press enter
11. type cd c:\winnt\system32 then press enter
12. Now verify that you are in c:\winnt\system32>
13. type "mmc services.msc" (in MS-DOS Prompt or "Run" Dialog box)
14. find "timesync" in services list and double click it.
15. Make it is as "automatic" in start up type
16. goto Log on tab and enable "Allow service to interact with desktop" if you like
to have a display on desktop.
17. Apply the above settings and Start the service and see whether the display appears
or not.
18. Restart your PC and check whether the service starts automatically or not.
Note:
Registering a service under Windows NT based PC's, will normally require a
Administrator level access. So, before registering a service you are requested to have a
administrator logon access (i.e Administrator Password)
Sertel Electronics
[email protected] or [email protected]

7
TIME SYNCHRONISATION TCP/IP OUTPUT PC SYNCH- THROUGH NET
TCP / IP PORT
Introduction
The EAD connects serial devices to Ethernet network using the IP Protocol. The EAD connects serial
devices through a TCP data channel connection to computers.
Network protocol
The EAD uses IP protocol for network communication. For network Connections to the serial port of
TCP.
Internet protocol (IP) address
to identify an individual computer IP network must have a unique IP address
Sample IP address
192.168.1.254
PORT NUMBER
The EAD serial channel (port) can be associated with a specific TCP Port number . port number
3001(as a source port no)is reserved for IFD (internet Fax dialer) configuration

-8-
Sertel Provided TCP/IP output This will synchronies More Number of PC
Through RJ45 Connection.
To Connect 100/10 BasT HUB from Main Hub to All PC
To Synchronies With PC Install Software The Following Step to Install the
Software
Service Name: Sertel time synchronisation system
Input: TCP/IP - Sertel Format
OS Platform: WinNT/Win2000/Win2003/WinXP
Synchronisation at: User Selectable via syncip.ini
Steps to follow ( to register a timesync service):
---------------------------------------------------
1. Copy TCPIP folder into c:\ as (c:\TCPIP)
2. Click "start"
3. Goto "Run" and type "command" and click "OK" button
4. The MS-DOS Screen will display in front of you.
5. type c: then press enter
6. type cd\ then press enter
7. type cd TCPIP then press enter
8. Now verify that you are in c:\TCPIP>
9. copy syncip.ini file to c:\winnt folder (MS-DOS Command "copy syncip.ini c:\winnt")
10. Now type "sc create timesync_ip binpath= c:\TCPIP\tcpserv.exe"
11. type cd\ then press enter
12. type cd c:\winnt\system32 then press enter
13. Now verify that you are in c:\winnt\system32>
14. type "mmc services.msc" (in MS-DOS Prompt or "Run" Dialog box)
15. find "timesync_ip" in services list and double click it.
16. Make it is as "automatic" in start up type
17. goto Log on tab and enable "Allow service to interact with desktop" if you like
to have a display on desktop.
18. Apply the above settings and Start the service and see whether the display appears
or not.
19. Restart your PC and check whether the service starts automatically or not.
Note:
Registering a service under Windows NT based PC's, will normally require a
Administrator level access. So, before registering a service you are requested to have a
administrator logon access (i.e Administrator Password)

-9-
syncip.ini file contents:
------------------------
[Network]
Server IP Address=0 // Leave this as 0 for automatic server detection or
//otherwise specify server IP address (default-0)
[Sync]
Sync Interval=0 // Synchronization Interval: 0-Every Second 1-Every Minute
//2-Every 1/2Hour,3-Evey Hour
Sertel Electronics
[email protected]

SERTEL NTP/SNTP
*****************************************************************************
Service Name: Sertel time synchronization system
*****************************************************************************
STEPS TO CHANGING IP ADDRESS:(windows ONLY)
------------------------------------------------------------
NOTE1:”SWITCH ON THE UNIT AND CONNECT THE ETHERNET CABLE WITH THE NTP UNIT”.
NOTE2:”YOU SHOULD CHANGE YOUR SYSTEM IP ADDRESS RELATED TO OUR DEFAULT IP
ADDRESS (192.168.1.254)”.
NOTE3:”THEN ONLY YOU CAN ABLE TO CHANGE IP ADDRESS INSIDE NTP UNIT”.
¾Click START at the bottom left corner of the desktop.
¾Click Run.

¾You have to type "telnet 192.168.1.254" and click ok.
¾It will show ts7200 login: here you have to type "admin" then press enter button.
¾It will show password: here you have to type "ntp" then press enter button.
¾Now you can see '$' symbol.

¾Now you should type the command "cd /etc/sysconfig" then press enter button.
¾Now you should type the command "vi ifcfg-eth0"then press enter button.

¾It will show IP address and subnet mask details.
¾Here you can see IPADDR=192.168.1.254 at the second line.
¾Here you press down key to second line then press right (->) key to move cursor right
side up to end (IPADDR=192.168.1.254_).
¾Now you press x button till (IPADDR=_) then stop pressing.