Omicron CMGPS, Reference Manual

Page 1: ...27 CMGPS Synchronization Unit Reference Manual...

Page 2: ...ata embodied in this manual represent the technical status at the time of writing and are subject to change without prior notice We have done our best to ensure that the information given in this manu...

Page 3: ...terfaces 19 3 3 1 DC in Power Supply 19 3 3 2 Antenna Input 20 3 3 3 ext Interf 21 3 3 4 Pulse out 2 Interface 22 3 3 5 Block Diagram of the CMGPS 23 4 Operating the CMGPS 25 4 1 Connecting the CMGPS...

Page 4: ...Antenna 36 6 5 ext Interf 37 6 6 Pulse Out 2 Interface 38 6 7 CE Conformity Electromagnetic Compatibility 39 6 8 Insulation Coordination 39 6 9 Safety Standards Certificates 40 7 Faults Possible Cause...

Page 5: ...site where the CMGPS synchronization unit is used It should be read by all personnel operating the synchronization unit Note The OMICRON Test Universe software also installs a PDF version of this ref...

Page 6: ...nated Use on page 9 The manufacturer distributors are not liable for damage resulting from unintended usage The user alone assumes all responsibility and risk The instructions provided in this referen...

Page 7: ...ing Make sure that the position of the lightning rod is higher than that of the antenna in any case When installing the CMGPS observe the general rules for lightning protection complying with the indu...

Page 8: ...GPS Synchronization Unit CMGPS 8...

Page 9: ...test set or via a binary input on the front of the CMC test set Using the CMGPS for other purposes than those described above is not considered the designated use The CMGPS s specifications have been...

Page 10: ...GPS Synchronization Unit CMGPS 10...

Page 11: ...principle of determining the distance between a certain location on the earth to the NAVSTAR satellites revolving around the earth on six different orbits twice a day Their orientation in relation to...

Page 12: ...hronization error of the CMGPS output of 1 s2 There may be any distance between these test sets to be synchronized see also section 5 Synchronizing Two or More CMC Test Sets By utilizing the GPS signa...

Page 13: ...oning 3 1 Components The CMGPS consists of the following components Figure 3 1 Synchronization unit CMGPS Figure 3 2 Power supply unit 100 240 VAC 18 VDC incl plug in adapter for country specific wall...

Page 14: ...GPS Synchronization Unit CMGPS 14 Figure 3 3 Connection cable CMGPS ext Interf CMC test set Figure 3 4 Active antenna Article number VEHK0003 Article number VEHZ3001...

Page 15: ...of the antenna cable an optional set of 2 20 m 2 x 60 ft cables is available from OMICRON Figure 3 6 CMGPS connected to antenna via 2 20 m 2 x 60 ft extension cables Note when connecting VEHZ3003 VEHK...

Page 16: ...e 3 7 SMA adapter to connect the extension cables to CMGPS and antenna Protecting cap for antenna input no illustration Carrying bag for CMGPS no illustration User manual no illustration Connect to an...

Page 17: ...here the CMGPS was either relocated by several hundred kilometers since the last time it was in use or out of operation for more than 6 months On Pulse Searching Locked All 3 LEDs are lit for about 30...

Page 18: ...ed above indicate faults and are outlined in section 7 Faults Possible Causes Remedies on page 41 On Pulse Searching Locked LED ON is lit LED Searching Locked is lit LED Pulse is lit for approx 500 ms...

Page 19: ...larity protected Figure 3 8 Power supply input DC in Most of the up to date CMC test sets e g CMC 256 CMC 256plus CMC 353 CMC 356 or CMC 850 provide power supply to the CMGPS via the connection cable...

Page 20: ...rves as power supply cable for the antenna of the CMGPS Note The coaxial extension cable supplied with CMGPS has a length of 15 m 45 ft If that is not sufficient there is an optional extension set of...

Page 21: ...terface serves to configure the CMGPS via software e g the synchronization time send the Pulse out 1 synchronization pulse to the CMC test set Standardized factory setting of the synchronization pulse...

Page 22: ...f the synchronization pulse is 200 ms output once per minute This interface has been especially designed for the synchronization of a CMC test set without an integrated ext Interf connector In order t...

Page 23: ...ock Diagram of the CMGPS Figure 3 12 Block diagram of the CMGPS 18 VDC from power supply unit ext Interf Pulse out 1 DC input PWR DC DC Pulse out 2 VDE884 Housing metal Gnd GPS receiver Interface modu...

Page 24: ...GPS Synchronization Unit CMGPS 24...

Page 25: ...perating the CMGPS are based on the precondition that the CMC test set has been operated in accordance with its manual and is ready for use Operating the CMGPS is as follows Connect the extension cabl...

Page 26: ...signal The state of the LEDs of the CMGPS should then be as follows 1 Connect the ext Interf of the CMGPS to the ext Interf input at the rear of the CMC test set by means of the supplied connection ca...

Page 27: ...or on line help Typically the CMGPS is ready for operation max 10 minutes after the power supply has been applied to it If this should not be the case refer to section 7 Faults Possible Causes Remedi...

Page 28: ...GPS Synchronization Unit CMGPS 28...

Page 29: ...wo CMGPS synchronization units trigger two CMC test sets to start a test at the exact same point of time Since the GPS signal is available worldwide the physical distance between these test sets is th...

Page 30: ...is issued at the same time 1 s1 from the GPS receivers in both substations The test sets have a 100 s sampling rate for reading the status of the binary inputs which also applies to the external inpu...

Page 31: ...nhanced accuracy mode are It applies to the test sets CMC 256 CMC 256plus CMC 353 CMC 356 and CMC 850 only Supported by a selected range of test modules only e g State Sequencer The specified precisio...

Page 32: ...ing of CMC test set states signal output with high accuracy synchronous to the IRIG B1 time reference or PPS PPX2 signal respectively for example for PMU synchrophasor tests Figure 5 4 Typical test se...

Page 33: ...the CMIRIG B Reference Manual Detailed information about how to configure the Test Universe software component Time Trigger Configuration for the use of CMIRIG B with or without CMGPS can be found in...

Page 34: ...GPS Syncronization Unit CMGPS 34...

Page 35: ...nsing GPS receiver Number of SV1 1 SV space vehicle Max number of satellites the receiver can use to determine position or time The satellites providing the highest signal quality are considered In ge...

Page 36: ...8 VDC 150 mA Admissible range of power supply voltage 8 VDC 30 VDC Power consumption 2 5 W Connection Reverse polarity protected Protection class II Antenna Antenna Active Connection of device Coaxial...

Page 37: ...able to meet the accuracy configured by the software ext Interf output Pulse out 1 Type CMOS output Accuracy Absolute error 1 s1 1 Accuracy of CMGPS The synchronization of test sets depends on the ac...

Page 38: ...Test Universe software supports the configuration of a pulse output only Therefore Pulse out 2 is synchronous to Pulse out 1 UB max 30 V 30 V Pull up resistor Rp optional Pulse out 2 Bin In GND red b...

Page 39: ...108 EC and the low voltage Directive 2006 95 EC Electromagnetic Compatibility EMC Emission Europe International USA EN 61326 1 EN 61000 6 4 EN 61000 3 2 3 IEC 61326 1 IEC 61000 6 4 IEC 61000 3 2 3 FCC...

Page 40: ...Certificates Certified Safety Standards Europe EN 61010 1 Insulation of Pulse out 2 interface with regard to housing and or ext Interf complies with EN 60950 1 International USA Canada IEC 61010 1 UL...

Page 41: ...e cause Remedy Both LEDs Searching Locked and Pulse are off LED ON is lit Antenna not connected Check connection Cable connection antenna CMGPS defective Check screwed fittings and contact quality of...

Page 42: ...lace antenna in a more exposed location that provides sufficient open sky Antenna or antenna cable defective Replace defective component Malfunction of the CMGPS Please contact the OMICRON Technical S...

Page 43: ...Power supply unit 100 240 VAC 18 VDC incl plug in adapter for various country specific wall outlets see figure 3 2 on page 13 VEHZ1103 Active antenna see figure 3 4 on page 14 VEHZ3001 Cables 16 pole...

Page 44: ...nization Unit CMGPS 44 8 2 Cleaning To clean the CMGPS use a cloth dampened with isopropanol alcohol or water Prior to cleaning always unplug the CMGPS from the mains and disconnect CMGPS from the CMC...

Page 45: ...ia Ltd Suite 2006 20 F Tower 2 The Gateway Harbour City Kowloon Hong Kong S A R Phone 852 2634 0377 E Mail support asia omicron at Web http www omicron at Europe Africa Middle East OMICRON electronics...

Page 46: ...Contact Information Technical Support 46...

Page 47: ...s of the CMGPS 13 Connection cable CMGPS CMC 14 Connections antenna input of the CMGPS 20 power supply 19 contact information OMICRON addresses 45 D data technical data 35 Designated use of CMGPS 9 Di...

Page 48: ...22 P Power supply unit 13 Pulse out 2 interface 22 S Safety standards 40 synchronization via CMIRIG B 32 via GPS 12 Synchronization point of time at Pulse out 2 22 at the ext Interf 21 Synchronization...