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Meinberg HR101HQ/DC20 Manual Download Page 69

10 Technical Appendix

default setting:
COM 0:

19200, 8N1
Meinberg Standard time string, per second

Time Code Outputs:

Unbalanced modulated sine wave signal:
3 V

pp

(MARK), 1 V

pp

(SPACE) into 50 ohm

DCLS-signal: TTL into 50 ohm, active-high or -low

microSync

Date: 22nd June 2020

65

Summary of Contents for HR101HQ/DC20

Page 1: ...MANUAL microSync NTP PTP Time Source 22nd June 2020 Meinberg Funkuhren GmbH Co KG ...

Page 2: ......

Page 3: ... Important Safety Instructions and Protective Measures 13 3 2 Used Symbols 14 3 3 Security during Installation 16 3 4 Protective Conductor Ground Terminal 19 3 5 Safety during Operation 19 3 6 Safety during Maintenance 20 3 7 Handling Batteries 20 3 8 Cleaning and Care 21 3 9 Prevention of ESD Damage 21 3 10 Return of Electrical and Electronic Equipment 22 4 Before you start 23 4 1 Text and Syntax...

Page 4: ... 10 5 The Precision Time Protocol PTP IEEE 1588 67 10 5 1 Functionality in Master Systems 68 10 5 2 Functionality in Slave Systems 68 10 5 3 PTPv2 IEEE 1588 2008 Configuration Guide 69 10 6 Programmable Pulse Outputs 74 10 7 Available Time Telegrams 75 10 7 1 Format of the Meinberg Standard Time String 75 10 7 2 Format of the Meinberg GPS Time String 76 10 7 3 Format of the Meinberg Capture String...

Page 5: ... The available configurations are optimized for the different application areas 1 2 Device Manufacturer Meinberg Funkuhren GmbH Co KG Lange Wand 9 31812 Bad Pyrmont Germany Phone 49 0 52 81 93 09 0 Fax 49 0 52 81 93 09 230 Internet https www meinbergglobal com Mail info meinberg de Date 2020 06 19 Manual Version 1 0 1 3 Target Audience This manual is intended for professionals responsible for the ...

Page 6: ...ion RMA number for shipping You can also obtain the RMA number from our website Please visit our RMA request page at https www meinbergglobal com english support rma htm The device must be packed in its original packaging or suitable packaging to protect it from shock and moisture Send your device to the manufacturer s address including sender identification and RMA number What must be included wi...

Page 7: ...mon PTP IEEE 1588 profiles and numerous net work protocols for management and monitoring tasks The variety of outputs and interfaces allows the use of microSync models in several industries and appli cations Depending on the system requirements customers can choose from different variants that are best suited to their needs The variants are defined via the BNC connectors which can provide several ...

Page 8: ...ial applications A detailed list of all options and their order codes can be found in the following overview Model Codes The microSync model code also order code has the following structure AA112BB B CC CC AA Chassis Type HR Half Rack 1HE 9 5 inch RX Full Rack 1HE 19 inch 11 Input and Output Options 10 30 31 Status indicators LAN CPU Receiver Status indicators PP1 PP8 COM 0 Timestring USB Terminal...

Page 9: ...le HR models always have the code part DC20 for the power supply as these variants are currently only supplied with a DC power supply microSync Model Code Samples HR101HQ DC20 Half rack chassis of I O type 10 with Meinberg GPS receiver OCXO HQ oscillator and DC20 power supply RX300DHQ AD10DC20 Full rack chassis of I O type 30 with Multi GNS receiver OCXO SQ oscillator and redundant power supplies ...

Page 10: ...lf rack housing It is possible to mount two systems side by side in a 19 inch server rack A special mounting bracket is available in the supplied mounting kit for mounting a single microSyncHR device Physical Dimensions 43 7 mm 1 72 inch 31 8 mm 1 25 inch 465 1 mm 18 31 inch 482 6 mm 19 inch 236 mm 9 29 inch 251 mm 9 88 inch 223 mm 19 inch 6 Date 22nd June 2020 microSync ...

Page 11: ...hronization solution in a 19 inch 1HE housing with the option of redundant power supplies with AC DC or DC voltage Physical Dimensions 43 mm 1 68 inch 31 8 mm 1 25 inch 465 1 mm 18 31 inch 482 6 mm 19 inch 236 mm 9 29 inch 248 mm 9 76 inch 250 mm 9 84 inch 444 mm 17 48 inch microSync Date 22nd June 2020 7 ...

Page 12: ...onsumption Pmax 50 W Thermal Energy Etherm 180 00 kJ h 170 61 BTU h 20 60 V DC Nominal Voltage UN 24 48 V Input Voltage Range Umax 20 60 V Nominal Current IN 2 10 A Power Consumption Pmax 50 W Thermal Energy Etherm 180 00 kJ h 170 61 BTU h microSyncHR 20 60 V DC Nominal Voltage UN 48 V Input Voltage Range Umax 20 60 V Nominal Current IN 0 63 A Power Consumption Pmax 30 W Thermal Energy Etherm 108 ...

Page 13: ...2 Channel Oscillator Options Type Holdover Performance 1 Day Holdover Performance 1 Year OCXO SQ 220 µsec 4 7 sec OCXO MQ 65 µsec 1 6 sec OCXO HQ 22 µsec 788 msec OCXO DHQ 4 5 µsec 158 msec 2 3 4 Environment Operating Temperature Range 20 to 55 C 4 to 131 F Storage Temperature Range 30 to 70 C 22 to 158 F Relative Humidity 5 to 95 non condensing at 40 C 104 F Operating Altitude up to 4 000 m 13 12...

Page 14: ... 2 1 CISPR 16 2 3 Radiated radio disturbance CISPR 32 Conducted disturbance current measurements FCC 47 CFR Part 15 Conducted emission section 15 107 b 3 RSS Gen Issue 4 section 8 8 4 FCC 47 CFR Part 15 Radiated emission section 15 109 b 3 RSS Gen Issue 4 section 8 9 4 ETSI EN 303 413 Standard for GNSS receiver 10 Date 22nd June 2020 microSync ...

Page 15: ...1000 4 8 Immunity test to power frequency 100 A m continuous magnetic fields 1000 A m at 1 s IEC 61000 4 11 Immunity tests to voltage dips short U 30 for 1 period microSyncRX only interruptions and voltage variations U 60 for 50 periods U 100 for 5 periods U 100 for 50 periods IEC 61000 4 16 Immunity test to conducted common 30 V continuous mode disturbances 300 V at 1 s IEC 61000 4 17 Immunity te...

Page 16: ... 2 sweeps 3 axes Class 2 10 150 Hz 2gn 40 sweeps 3 axes IEC 60255 21 2 Shock 10gn 11 ms 3 shocks 3 axes Class 2 30gn 11 ms 3 shocks 3 axes 20gn 16 ms 1000 shocks 3 axes IEC 60255 21 3 Seismic1 4 35 Hz 1gn 1 sweep hor axes Class 2 4 35 Hz 2gn 1 sweep ver axis 1 In order to withstand the tests for vibration shock and seismic special mounting brackets are optionally available 2 The frequency range de...

Page 17: ... signal words you may only continue if you have understood and fulfilled all requirements In this documentation dangers and indications are classified and illustrated as follows DANGER The signal word indicates an imminently hazardous situation with a high risk level This notice draws attention to an operating procedure or similar proceedings of which a non observance may result in serious persona...

Page 18: ...rischen Schlages Caution risk of electric shock IEC 60417 5041 Vorsicht heiße Oberfläche Caution hot surface IEC 60417 6056 Vorsicht Gefährlich sich bewegende Teile Caution moving fan blades IEC 60417 6172 Trennen Sie alle Netzstecker Disconnection all power plugs IEC 60417 5134 Elektrostatisch gefährdete Bauteile Electrostatic Sensitive Devices IEC 60417 6222 Information generell Information gene...

Page 19: ...device may only be used for the purpose described in this manual In particular the given limits of the device must be observed The safety of the installation in which the unit is integrated is the responsibility of the installer Non observance of these instructions can lead to a reduction in the safety of this device Please keep this manual in a safe place This manual is intended exclusively for e...

Page 20: ...nal measures e g Installation in an air conditioned control cabinet required Transport Unpacking Installation If the unit is brought into the operating room from a cold environment condensation may occur wait until the unit is temperature controlled and absolutely dry before operating it When unpacking setting up and before operating the equipment be sure to read the information on the hardware in...

Page 21: ...bles and lines work properly and are undamaged Pay particular attention to the facts that the cables do not have kinks or that they are not too short around corners and no objects are placed on the cables Also make sure that all connections are secure Faulty shielding or cabling will endanger your health electrical shock and may destroy other equipment Ensure that all necessary safety precautions ...

Page 22: ...cket on the appliance or the mains socket of the house installation is freely accessible to the user so that the mains cable can be pulled out of the socket in case of emergency Outside the assembly group the device must be disconnectable from the power supply in accordance with the provisions of IEC 62368 1 e g by the primary line protection Installation and disassembly of the power supply plug i...

Page 23: ...e not covered or dusty as there is a danger of overheating during operation Disturbances during operation can result Normal Operation The normal operation and the observance of the EMC limits electromagnetic compatibility are only ensured if the housing cover is properly installed and when the doors are closed cooling fire protection shielding against electrical magnetic and electromagnetic fields...

Page 24: ... risks for the user and result in a loss of warranty as well as an exclusion of liability Danger due to moving parts keep away from moving parts Device parts can become very hot during operation Do not touch these surfaces If necessary switch off the unit before installing or removing any equipment and allow it to cool down 3 7 Handling Batteries CAUTION The lithium battery on the receiver modules...

Page 25: ...destruction Prepare removal and installation of assemblies Unload yourself for example by touching a grounded object before touching assemblies Ensure that you wear a grounding strap on the wrist when working with such assemblies which you attach to an unpainted non conductive metal part of the system Use only tools and devices that are free from static electricity Transporting Assemblies Assembli...

Page 26: ...ve The product symbol on the left indicates that this electronic product must not be disposed of in domestic waste Return and Collection Systems For returning your old equipment please use the country specific return and collection systems available to you or contact Meinberg The withdrawal may be refused in the case of waste equipment which presents a risk to human health or safety due to contami...

Page 27: ...cs Example NTP Deamon ntpd Cross references in the document Cross references in the document are displayed in dark blue font e g see chapter Support Information Selection Options and Logical Groups Selection options e g in a drop down menu are underlined and then briefly described If several parameters are combined in a menu to logical groups these are also underlined and displayed in bold font e ...

Page 28: ...ssion IED Intelligent Electronic Devices IEEE Institute of Electric and Electronic Engineers IEEE 1588 Protocol for high precision synchronization in nanosecond range PTP IP Internet Protocol IP 20 Protection Class 20 IRIG Inter range instrumentation group time codes LCD Liquid Crystal Display LED Light Emitting Diode LINUX Unix like multi user computer operating system LIU Line Interface Unit an ...

Page 29: ...gging TACACS Terminal Access Controller Access Control System TCG Time Code Generator TCR Time Code Receiver for IRIG A B AFNOR or IEEE1344 codes T1 North American telecommunication signal at 1 544 MHz frequency TCP Transmission Control Protocol TTL Transistor to Transistor Logic TX Data Transmission U Unit is a unit measure the vertical height of rack mounted electronic equipment UDP User Datagra...

Page 30: ...nc series microSync HR microSync RX Mounting Brackets TORX T10 TORX T10 Earth Connection TORX T20 TORX T20 Power supply TORX T8 Figure Required tools from left to right TORX T20 TORX T10 TORX T8 26 Date 22nd June 2020 microSync ...

Page 31: ...ersions Supported Linux distributions include Ubuntu Mint Linux Debian SUSE Linux CentOS and others The software can be downloaded free of charge from our homepage https www meinbergglobal com english sw mbg devman htm Figure Meinberg Device Manager startscreen Portable Version Meinberg Device Manager without Setup For environments in which no installation of executable programs is possible or for...

Page 32: ...ndards e g for power supply connections please specify exactly which adapters or cables you need to put the device into operation when ordering Before unboxing the system make sure that there is sufficient space in the built in cabinet to ensure safe ventilation of the system Avoid dirt and dust during installation It is important that you follow the safety instructions in this manual to avoid dam...

Page 33: ...ting 1 GNSS antenna 2 Overvoltage protection optional 3 Antenna cable 4 Coaxial cable for overvoltage protection optional 5 Retaining tube and clips for Meinberg GPS antenna 6 Mounting kit for Meinberg GPS antenna Rack Mount 7 Mounting bracket for microSyncHR 19 inch extension and mounting screws 8 Mounting bracket standard and fixing screws 9 Connector for DMC X1 X2 connection 10 Power cord micro...

Page 34: ...d the safety instructions and the manual carefully to familiarize yourself with the safe and proper handling of electronic devices The product documentation can be found on the USB Flash Memory 4 7 Disposal of Packaging Materials The packaging materials we use are fully recyclable Material Use for Disposal Polystyrol packaging frame filling material Recycling Depot polystyrene peanuts bubble wrap ...

Page 35: ...apters for connecting the device are available Make sure that the voltage is disconnected from the power source during installation Rackmount microSyncHR For the installation of a microSyncHR Half Rack system in a 19 inch server rack a special mounting bracket is included in the scope of delivery Use this bracket to mount your system The bracket is attached to the microSyncHR enclosure at the four...

Page 36: ...ection AC DC or DC is made directly at the power supply unit NETWORK GNSS ANTENNA SERIAL CONSOLE PWR AD10 AC DC POWER DC in DC in N L N L N N L PWR DC20 DC POWER Figure Connection scheme microSyncRX with power supply network connector serial connection and antenna link The following section describes how you can initially put a microSync system into operation with the help of the Meinberg Device M...

Page 37: ...test version from our website https www meinbergglobal com english sw devman htm If the network settings of your PC do not allow a connection to the microSync system you have to adjust the settings of your network adapter At delivery the microSync system has the following network settings IP v4 address 192 168 19 79 Netmask 255 255 255 0 DHCP disabled If you do not have access to the properties of...

Page 38: ...uration with the mbgOSWizard After the successful connection via the serial console as described in chapter Initial Network Configura tion you can now use the Meinberg OS Wizard to configure the IP address for the first time Select the same subnet mask as for your network adapter and an IP address which is located in the same subnet First start the wizard with mbgOSWizard sh after confirming the i...

Page 39: ...ailable microSync systems that have a serial or a network connection are recognized by the Meinberg Device Manager and will be listed then Found systems are displayed with a green dot Modules that are no longer recognized are displayed with a red dot Modules whose password or password user name combination is unknown will be marked with a red x Use the corresponding checkbox to select the device w...

Page 40: ... the port is not blocked by your firewall configuration Authentication Select the authentication option The option User name Password is only supported on systems with MeinbergOS Save Credentials With this checkbox you ensure that the Device Man ager has remembered the login for this system When the program is restarted the User and Password fields are already filled out Silent Login You have the ...

Page 41: ...ware here https www meinbergglobal com english sw mbg devman htm Figure Meinberg Device Manager input and output signals of a microSyncHR system Documentation For the documentation about configuration and system monitoring of microSync systems with the Meinberg Device Manager software a comprehensive manual is available on our website You can download the docu ment PDF here https www meinberggloba...

Page 42: ...irmware htm you can download or request the latest meinbergOS updates free of charge If you need an older version you can request it from our support Select the option Specified Firmware Version and enter the version of the currently used firmware and the desired firmware version e g meinbergOS 2019 08 5 38 Date 22nd June 2020 microSync ...

Page 43: ...the menu Config ure Device s System Settings and then use the button Get Diagnostics File With the button Cre ate Snapshot you can also create a text file with the current configuration This file is also helpful for our employees in solving the problem If these files are too big to send by mail you can also use our upload page https www meinbergglobal com upload Please enter the serial number of y...

Page 44: ...n the severity of the event and the event type is displayed e g Level Error Type Warm Boot Monitoring Status In the menu Monitoring Status you can read out fur ther system messages with the time of the event and the severity The individual events are highlighted in color using a tabular overview so that the severity can be recognized immediately e g Network Link Severity Error Descr Down Color red...

Page 45: ... 1588 PTP online tutorials The Meinberg Academy introduction and offerings Meinberg Newsletter How To Videos on our YouTube channel 9 1 Basic Customer Support Contact Meinberg via e mail or phone E Mail techsupport meinberg de Service Hotline 49 0 5281 9309 888 E Mail info meinberg de Service Hotline 49 0 5281 9309 888 Bürozeiten Mo Do 7 30 17 00 Fr 07 30 15 00 MEZ MESZ Nicht erreichbar an Sa So u...

Page 46: ...nline https www meinbergglobal com english support tech support htm Choose either the option Support Ticket Request or Advanced Customer Support if you have purchased an ACS contract from us and wish to use this service Or send a mail to techsupport meinberg de with a description of your issue A support ticket will automatically be opened Our support engineers will contact you as soon as possible ...

Page 47: ...we recommend that you attach your Diagnostic File when sending a ticket request to our support depart ment The diagnostic file includes all status data of a mi croSync system logged since the last reboot It can be downloaded from all microSync devices by using the Meinberg Device Manager Software The file format of the diagnostic file is a tar gz archive The archive contains all the important conf...

Page 48: ...1588 PTP online tutorials from Meinberg http blog meinbergglobal com 9 Meinberg Knowledgebase https kb meinbergglobal com 10 FAQs about Meinberg Products https www meinbergglobal com english faq 11 Selection of the Meinberg white papers https www meinbergglobal com english info whitepaper 12 GPS GNSS Antenna Installation and mounting https www meinbergglobal com english info gps antenna mount htm ...

Page 49: ...ses MBG Product Training NTP Complete PTP Complete Customized Trainings Online Trainings and Course Calendar Contact Phone 49 0 5281 93093 0 E Mail info meinberg de Internet https www meinberg academy 9 7 Meinberg Newsletter Meinberg publishes regularly up to date information technical news firmware updates and security advisory by the Meinberg Newsletter in both the English and German language Su...

Page 50: ...SNMPv1 v2 v3 Remote Syslog Support UDP PTP Profiles IEEE 1588v2 Default Profile IEEE C 37 238 2011 Power Profile IEEE C 37 238 2017 Power Profile IEC IEEE 61850 9 3 Power Utility Profile Enterprise Profile ITU T G 8265 1 ITU T G 8275 1 ITU T G 8275 2 Telecom Profiles SMPTE ST 2059 2 Broadcast Profile IEEE 802 1AS TSN AVB Profile AES67 Media Profile DOCSIS 3 1 46 Date 22nd June 2020 microSync ...

Page 51: ...o certain users mostly military The principle of location and time determination with the aid of a GPS receiver is based on the most possible accurate measurement of the signal propagation time from the individual satellites to the receiver The GPS satellites orbit the earth on six orbital tracks in 20 000 km of altitude once in about 12 hours This ensures that at any time at least four satellites...

Page 52: ... time of writing early 2016 the Galileo system was still under development with only a few fully operational SVs Therefore the precise performance and reliability of u blox receivers when receiving Galileo signals is effectively impossible to guarantee BeiDou is a GNSS operated by China Its purpose is to initially provide position velocity and time for users in Asia In a later stage when the syste...

Page 53: ...lse outputs option Frequency Synthesizer 2 Time capture inputs Description The microSync offers satellite based time synchronization at the highest accuracy standards for fixed or mobile applications It is suitable to be deployed in data centers or on board of cars trucks aircrafts ships and other moving platforms The satellite receiver can determine its position even at a maximum acceleration of ...

Page 54: ...uildings etc and the reflected signals can then be received However in this case the true signal propagation path is longer than expected which causes a small error in the computed position which in turn yields less accurate time Since most of the satellites are not stationary the antenna has to be installed in a location with as much clear view of the sky as possible e g on a rooftop to allow for...

Page 55: ...na cable so no external power supply is required near the location of the antenna if a coaxial cable is used If more than a single GPS receiver are to be operated then a GPS antenna splitter can be used to distribute the GPS signal from a single antenna The GPS antenna splitter provides 4 outputs and can be cascaded to supply even more than 4 receivers with the GPS signal Alternatively there is al...

Page 56: ... length is required then this can be ordered accordingly Surge protectors should be installed indoors directly where the antenna cable comes in The optionally delivered protection kit is not for outdoor usage The ground lead should be kept as short as possible and has to be connected to building s ground rod Up to four GPS receivers can be fed by a single antenna down converter unit by using an an...

Page 57: ...5 GNSS Antenna for Stationary Installation The Multi GNSS Antenna is an active GNSS antenna which can receive the signals of the GPS GLONASS Galileo and Beidou satellite systems It is very well suited for stationary installations operates with a 5V DC supply voltage provided by the receiver and has an integrated surge protection The antenna cable length can be up to 70 meters if a H155 low loss co...

Page 58: ...tive anti fall equipment WARNING Working on the antenna system during thunderstorms Danger to life due to electrical shock Do not carry out any work on the antenna system or the antenna cable if there is a risk of a lightning strike Do not carry out any work on the antenna system if the safety distance to free lines and sequential circuits is exceeded 54 Date 22nd June 2020 microSync ...

Page 59: ...ble for stationary installations Figure Installation drawing RV 76G antenna WARNING Antenna mounting without effective anti fall protection Danger to life due to fall Pay attention to effective working safety when installing antennas Never work without an effective anti fall equipment WARNING Working on the antenna system during thunderstorms Danger to life due to electrical shock Do not carry out...

Page 60: ...ition and switches to Normal Operation If no valid data can be found in the battery buffered memory e g because the battery has been discon nected or replaced the receiver has to scan for satellites and collect the current almanac and ephemeris data first This mode is called Cold Boot and it takes at least 12 minutes until all required data have been collected The reason is that the satellites sen...

Page 61: ...0 ft Meinberg GPS Antenna RG213 700 m 2300 ft Multi GNSS Antenna Belden H155 70 m 230 ft Long Wave Antenna RG58 300 m 1000 ft Fiber Optic Fiber Optic 2000 m 6500 ft DCF77 Germany Middle Europe MSF GB WWVB US JJY Japan Fiber Optic GOAL GPS Optical Antenna Link DOAL DCF Optical Antenna Link microSync Date 22nd June 2020 57 ...

Page 62: ... T G 8275 2 Telecom Phase Time Profile partial timing support SMPTE ST 2059 2 Broadcast Profile IEEE 802 1AS TSN AVB Profile AES67 Media Profile DOCSIS 3 1 PTP Modes Multicast Unicast Layer 2 IEEE 802 3 Multicast Unicast Layer 3 UDP IPv4 IPv6 Hybrid Mode E2E P2P Delay Mechanism Up to 128 messages second per client 1588 Clock Mode 1 Step 2 Step for both Master and Slave operation Time Stamp Accurac...

Page 63: ...onnected Link up red at least one of the monitored network interfaces is faulty A Alarm off no error red general error Available Client Licenses License Unicast Clients Delay Req s PL A 8 1024 PL B 256 32768 PL C 512 65536 Recommended and tested Transceivers from other Vendors Mode Vendor Type Distance MULTI MODE AVAGO AFBR 5710PZ 550 m FINISAR FTLF8524P3BNL 500 m SINGLE MODE AVAGO AFCT 5710PZ 10 ...

Page 64: ...10mA toff e g 3 µsec IC 10mA change of second P_SEC TTL level change of minute P_MIN TTL level Accuracy after synchronization and 20 minutes of operation of Pulses OCXO SQ MQ HQ DHQ better than 50 nsec better than 2 µsec during the first 20 minutes of operation Frequency Outputs 10 MHz TTL level into 50 Ohm 1 MHz TTL level 100 kHz TTL level Frequency Synthesizer 1 8 Hz up to 10 MHz Accuracy of Syn...

Page 65: ...OM0 19200 8N1 Meinberg Standard time string per second Time Code Outputs Unbalanced modulated sine wave signal 3 Vpp MARK 1 Vpp SPACE into 50 ohm DCLS signal TTL into 50 ohm active high or low microSync Date 22nd June 2020 61 ...

Page 66: ... programmable outputs PP 1 PP 8 DC insulated by optocouplers UCEmax 55 V ICmax 50 mA Ptot 150 mW Viso 5000 V pulse delay ton e g 20 µsec IC 10mA toff e g 3 µsec IC 10mA change of second P_SEC TTL level change of minute P_MIN TTL level Accuracy after synchronization and 20 minutes of operation of Pulses OCXO SQ MQ HQ DHQ better than 50 nsec better than 2 µsec during the first 20 minutes of operatio...

Page 67: ...2 Baud Rate 300 600 1200 2400 4800 9600 19200 Baud Framing 7E1 7E2 7N2 7O1 7O2 8E1 8N1 8N2 8O1 default setting COM 0 19200 8N1 Meinberg Standard time string per second Time Code Outputs Unbalanced modulated sine wave signal 3 Vpp MARK 1 Vpp SPACE into 50 ohm DCLS signal TTL into 50 ohm active high or low microSync Date 22nd June 2020 63 ...

Page 68: ...nge of minute P_MIN TTL level Accuracy after synchronization and 20 minutes of operation of Pulses OCXO SQ MQ HQ DHQ better than 50 nsec better than 2 µsec during the first 20 minutes of operation Frequency Outputs 10 MHz TTL level into 50 Ohm 1 MHz TTL level 100 kHz TTL level Frequency Synthesizer 1 8 Hz up to 10 MHz Accuracy of Synthesizer base accuracy depends on system accuracy 1 8 Hz to 10 kH...

Page 69: ...tting COM 0 19200 8N1 Meinberg Standard time string per second Time Code Outputs Unbalanced modulated sine wave signal 3 Vpp MARK 1 Vpp SPACE into 50 ohm DCLS signal TTL into 50 ohm active high or low microSync Date 22nd June 2020 65 ...

Page 70: ...ion which runs very stable on many operating systems NTP v4 has some improvements over NTP v3 and has better support for some operating systems Additionally there s also a simplified version of the protocol called SNTP Simple Network Time Protocol SNTP uses the same TCP IP packet structure like NTP but due to the simpler algorithms it provides only very reduced precision The NTP package contains a...

Page 71: ... send synchronization packets as long as that is being done by the designated Grandmaster The existing network infrastructure components play a big role in a PTP network and directly influence the level of accuracy that can be achieved by the clients Asymmetric network connections degrade the accuracy therefore classic layer 2 and 3 Ethernet switches with their store and forward technology are not...

Page 72: ...k of the PTP board s time stamp unit 50 MHz is derived from the GNSS disciplined oscillator of the reference time source using a PLL Phase Locked Loop of the FPGA This achieves a direct coupling of the time stamp unit to the GNSS system 10 5 2 Functionality in Slave Systems 10 100MBit LAN 10 MHz PPS programmable outputs modulated time code RJ45 with magnetics and LEDs PHYceiver status LEDs driver ...

Page 73: ...be decided before deploying the infrastructure 1 Layer 2 Ethernet or Layer 3 UDP IPv4 connections 2 Multicast or Unicast 3 Two Step or One Step Operation 4 End to End or Peer to Peer Delay Mechanism The above options need to be defined for the whole setup if devices do not stick to the same settings they will not be able to establish a working synchronization link 10 5 3 2 Network Layer 2 or Layer...

Page 74: ...ng orders of magnitudes more traffic On the other hand some switches might block multicast traffic so that in certain environments Unicast mode has to be used 10 5 3 4 Two Step or One Step The PTP protocol requires the master to periodically send SYNC messages to the slave devices The hardware time stamping approach of PTP requires that the master records the exact time when such a SYNC packet is ...

Page 75: ...nt network ring topology the network delay will be affected when the ring breaks open and network traffic needs to be redirected and flows into the other direction A PTP slave in a sync infrastructure using E2E would in this case apply the wrong delay correction calculations until it performs the next delay measurement and finds out that the network path delay has changed The same scenario in a P2...

Page 76: ...uired by a slave device to select a master and to switch to a different master in case the selected one fails Multiple devices can simultaneously transmit ANNOUNCE messages during periods in which no master has been selected yet This happens for example when a PTP network is powered up i e all devices are starting to work at the same time In this case all devices that consider themselves based on ...

Page 77: ... every 8 seconds resulting in sending and receiving one packet This can be increased in case the network path delay variation in the network is relatively large i e the time it takes for the SYNC message to reach the slave varies a lot or the slave devices have to tightly follow the master and adjust their time base oscillator very often due to its instability Meinberg slave devices will limit the...

Page 78: ...e every 6300 seconds starting from 0 o clock The appearing distance between the last pulse of a day and the first pulse of the next day 0 00 00 o clock would be only 4500 sec The value in entry field Cycle turns red when entering a time that causes this asymmetry Pulses Per Second Per Min Per Hour These modes generate pulses of defined length once per second once per minute or once per hour Length...

Page 79: ...60 while leap second uv clock status characters depending on clock type u GPS clock is running free without exact synchr PZF time frame not synchronized DCF77 clock has not synchronized after reset space 20h GPS clock is synchronous base accuracy is reached PZF time frame is synchronized DCF77 clock has synchronized after reset v GPS receiver has not checked its position PZF DCF77 clock currently ...

Page 80: ...II code 02h tt mm jj the current date tt day of month 01 31 mm month 01 12 jj year of the century 00 99 w the day of the week 1 7 1 monday hh mm ss the current time hh hours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while leap second uv clock status characters u clock is running free without exact synchr space 20h clock is synchronous base accuracy is reached v receiver has not checked its pos...

Page 81: ...whereas the other characters are part of the time string The groups of characters as defined below x 0 or 1 corresponding on the number of the capture input _ ASCII space 20h dd mm yy the capture date dd day of month 01 31 mm month 01 12 yy year of the century 00 99 hh mm ss fffffff the capture time hh hours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while leap second fffffff fractions of secon...

Page 82: ...ear of the century 00 99 w the day of the week 1 7 1 Monday hh mm ss the current time hh hours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while leap second xxxx time zone indicator UTC Universal Time Coordinated formerly GMT CET European Standard Time daylight saving disabled CEST European Summertime daylight saving enabled u clock status characters clock has not synchronized after reset space ...

Page 83: ...t of local timezone related to UTC in hours and minutes ac clock status characters a clock has not synchronized after reset space 20h clock has synchronized after reset c GPS receiver has not checked its position space 20h GPS receiver has determined its position d time zone indicator S CEST European Summertime daylight saving enabled CET European Standard Time daylight saving disabled f anounceme...

Page 84: ...e replaced by a space character 20h e longitude the following characters are possible E east of Greenwich W west of Greenwich hhhh altitude above WGS84 ellipsoid in meters leading signs are replaced by a space character 20h ETX End Of Text ASCII Code 03h 80 Date 22nd June 2020 microSync ...

Page 85: ...ours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while leap second ss fractions of seconds 1 10 1 100 A Status A time data valid V time data not valid bbbb bb latitude of receiver position in degrees leading signs are replaced by a space character 20h n latitude the following characters are possible N north of equator S south d equator lllll ll longitude of receiver position in degrees leading s...

Page 86: ...conds 1 10 1 100 A Status A time data valid V time data not valid bbbb bbbbb latitude of receiver position in degrees leading signs are replaced by a space character 20h n latitude the following characters are possible N north of equator S south d equator lllll lllll longitude of receiver position in degrees leading signs are replaced by a space character 20h e longitude the following characters a...

Page 87: ...or letters where as the other characters are part of the time string The groups of characters as defined below Start character ASCII Code 24h sending with one bit accuracy at change of second hhmmss ss the current UTC time hh hours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while leap second HH II the local timezone offset to UTC HH hours 00 13 II minutes 00 59 dd mm yy the current date dd day ...

Page 88: ...ther characters are part of the time string The groups of characters as defined below yy mm tt the current date yy year of the century 00 99 mm month 01 12 dd day of month 01 31 _ Space ASCII code 20h hh mm ss fff the current time hh hours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while leap second fff milliseconds 000 999 cc Check sum EXCLUSIVE OR result of the previous characters displayed a...

Page 89: ...y ASCII numbers whereas the other characters are part of the time string The groups of characters as defined below T Start character sending with one bit accuracy at change of second yy mm dd the current date yy year of the century 00 99 mm month 01 12 dd day of month 01 31 ww the day of the week 01 07 01 monday hh mm ss the current time hh hours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while...

Page 90: ...aracters are part of the time string The groups of characters as defined below X Control character code 58h sending with one bit accuracy at change of second G Control character code 47h U Control character code 55h yymmdd the current date yy year of the century 00 99 mm month 01 12 dd day of month 01 31 hh mm ss the current time hh hours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while leap se...

Page 91: ...e format is SOH ddd hh mm ssq CR LF The letters printed in italics are replaced by ASCII numbers whereas the other characters are part of the time string The groups of characters as defined below SOH Start of Header ASCII control character sending with one bit accuracy at change of second ddd day of year 001 366 hh mm ss the current time hh hours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while...

Page 92: ...ed by ASCII numbers whereas the other characters are part of the time string The groups of characters as defined below SOH Start of Header ASCII control character sending with one bit accuracy at change of second ddd day of year 001 366 hh mm ss the current time hh hours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while leap second q Quality indicator space Time Sync GPS lock no Time Sync GPS fa...

Page 93: ... 5 minutes The letters printed in italics are replaced by ASCII numbers whereas the other characters are part of the time string The groups of characters as defined below SOH Start of Header ASCII control character sending with one bit accuracy at change of second ddd day of year 001 366 hh mm ss the current time hh hours 00 23 mm minutes 00 59 ss seconds 00 59 or 60 while leap second q Quality in...

Page 94: ...er second at a baud rate of 300 or greater The format is SOH DDD HH MM SS CR LF The letters printed in italics are replaced by ASCII numbers whereas the other characters are part of the time string The groups of characters as defined below SOH ASCII code Start of Heading 0x01h DDD ordinal date day of year 1 to 366 HH MM SS time of the start bit given in hour HH minute MM second SS CR ASCII code Ca...

Page 95: ...d L Mills 1992 2004 Permission to use copy modify and distribute this software and its documentation for any purpose and without fee is hereby granted provided that the above copyright notice appears in all copies and that both the copyright notice and this permission notice appear in supporting documentation and that the name University of Delaware not be used in advertising or publicity pertaini...

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