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Meinberg GNS183PEX Manual

Meinberg GNS183PEX Manual

Gnss-synchronized radio clock for pci express
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MANUAL
GNS183PEX
GNSS-Synchronized Radio Clock
for PCI Express
Meinberg Funkuhren GmbH & Co. KG

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Summary of Contents for Meinberg GNS183PEX

  • Page 1 MANUAL GNS183PEX GNSS-Synchronized Radio Clock for PCI Express Meinberg Funkuhren GmbH & Co. KG...

  • Page 4: Table Of Contents

    Surge Protection and Grounding ....... . . Installing the GNS183PEX in the Host System ......
  • Page 5 12.5.2 Meinberg GPS Time String ........

  • Page 6: Imprint And Legal Information

    1 Imprint and Legal Information 1 Imprint and Legal Information Publisher Meinberg Funkuhren GmbH & Co. KG Registered Place of Business: Lange Wand 9 31812 Bad Pyrmont Germany Telephone: +49 (0) 52 81 – 93 09 - 0 Fax: +49 (0) 52 81 – 93 09 - 230 The company is registered in the "A"...

  • Page 7: Change Log

    1.05 2016-04-21 Baud rate & framing set to 19200 / 8N1 by default 1.06 2018-06-28 Description of Meinberg Device Manager as optional configuration software New illustration and designation of screw terminal voltage range, housing information 2.00 2023-02-22 Fundamental revision of the manual structure Revision history Chap.

  • Page 8: Copyright And Liability Exclusion

    Meinberg reserves the right to make changes of any type to this document at any time as is necessary for the purpose of improving its products and services and ensuring compliance with applicable standards, laws &...

  • Page 9: Presentation Conventions In This Manual

    This signal word indicates a hazard with a high risk level. Such a notice refers to a procedure or other action that will very likely result in serious injury or even death if not observed or if improperly performed. GNS183PEX...

  • Page 10: Secondary Symbols Used In Safety Warnings

    Warnings of risks of product damage, data loss, and also information security risks are indicated with this type of warning box. Information: Additional information that may be relevant for improving efficiency or avoiding confusion or misunder- standings is provided in this form. GNS183PEX...

  • Page 11: Generally Applicable Symbols

    The presence of the “ESD” symbol is indicative of a risk of product damage caused by electrostatic discharge. Direct Current (DC) (symbol definition IEC 60417-5031) Alternating Current (AC) (symbol definition IEC 60417-5032) Grounding Terminal (symbol definition IEC 60417-5017) Protective Earth Connection (symbol definition IEC 60417-5019) Disconnect All Power Connectors (symbol definition IEC 60417-6172) GNS183PEX...

  • Page 12: Important Safety Information

    It is the responsibility of the operator to ensure that the product is safely and properly used. Should you require additional assistance or advice on safety-related matters for your product, Meinberg’s Technical Support team will be happy to assist you at any time. Simply send a mail techsupport@meinberg.de.

  • Page 13: Product Documentation

    If any of the safety information in the product documentation is unclear for you, do not continue with the set-up or operation of the device! Safety standards and regulations change on a regular basis and Meinberg updates the corresponding safety information and warnings to reflect these changes. It is therefore recommended to regularly visit the Meinberg website at https://www.meinbergglobal.com...

  • Page 14: Safety During Installation

    • Never short-circuit the battery! • Never attempt to recharge the battery! • Never throw the battery in a fire or dispose of it in an oven! • Never dispose of the battery in a mechanical shredder! GNS183PEX...

  • Page 15: Important Product Information

    • The device is only deemed to be appropriately used and EMC limits (electromagnetic compatibility) are only deemed to be complied with while the device housing is fully assembled in order to ensure that requirements pertaining to cooling, fire safety, electrical shielding and (electro)magnetic shielding are upheld. GNS183PEX...

  • Page 16: Maintenance And Modifications

    6 Important Product Information 6.4 Maintenance and Modifications Important! Before performing any maintenance work on or authorized modification to your Meinberg system, we recommend making a backup of any stored configuration data (e.g., to a USB flash drive from the Web Interface).

  • Page 17: Prevention Of Esd Damage

    Systems and modules with ESDS compo- nents usually bear this symbol. Important! Due to its complexity, the GNS183PEX is especially sensitive to electrostatic discharges and requires special care when handling. Please consider wearing special industrial-grade ESD-proof clothing and shoes when handling the product.

  • Page 18: Disposal

    It can be returned to Meinberg for disposal. Any transportation expenses for returning this product (at end-of- life) must be covered by the end user, while Meinberg will bear the costs for the waste disposal itself. If you wish for Meinberg to handle disposal for you, please get in touch with us. Otherwise, please use the return and collection systems provided within your country to ensure that your device is disposed of in a compliant fashion to protect the environment and conserve valuable resources.

  • Page 19: Introduction

    As shown in the diagram above, the PCI Express interface serves three primary purposes: communication of management data between the GNS183PEX card and the host PC, communication of time data from the card to the host PC to allow the host PC’s operating system to synchronize the time of the mainboard’s real-time clock, and delivery of the required power from the host PC’s power source to the card.
  • Page 20 By default the GNS183PEX is equipped with a TCXO (Temperature Compensated Xtal Oscillator) as mas- ter oscillator to provide a good time accuracy and frequency stability. As long as an input signal is supplied the frequency of the oscillator is adjusted from the input signal, and if the input signal is disconnected afterwards the card can still provide accurate time for a certain holdover interval.

  • Page 21: Manual Revisions

    Manual Revisions Meinberg products are subject to ongoing development even after their market release, with new features and enhancements added on a regular basis via firmware and software updates. Meinberg also revises its product manuals to account for these feature updates.

  • Page 22: Basic Installation And Setup Of The Gns183Pex

    8 Basic Installation and Setup of the GNS183PEX This chapter describes how to set up the basic infrastructure required for operation of the GNS183PEX, how to install the card itself, and how to install and configure the software drivers and management software on the host PC.

  • Page 23: Installation Of A Gnss Antenna

    DC supply voltage supplied by the receiver, and features an integrated surge protector. For mobile applications, such as cars, RVs, vans, ships, trains, and aircraft, we recommend the use of the RV-76G, an active GNSS antenna that is suitable for direct installation in an enclosure (chassis, panels, etc.) GNS183PEX...

  • Page 24: Selecting The Antenna Location

    2. Mounted on a wall To avoid difficulties with synchronization of your connected Meinberg time server, select a location that al- lows for an unobstructed view of the sky (Fig. 1) so as to ensure that enough satellites can be found.
  • Page 25 • A clear view between the 55 north and 55 south parallels (satellite orbits). Information: Problems may arise with the synchronization of your Meinberg time server if these conditions are not met, as four satellites must be located to calculate the exact position. GNS183PEX...

  • Page 26: Installation Of The Antenna

    ” – 8 ”). Detailed instructions for the installation of a Multi-GNSS Antenna distributed by Meinberg are included in printed form with the antenna and also in the form of a digital PDF, a link to which is provided in Chapter 12.1,...

  • Page 27: Antenna Cable

    Meinberg provides suitable cable types with its antennas and these are ordered together with the antenna to match the length you need from your antenna to your Meinberg reference clock. The route to be covered for your antenna installation should be determined and the appropriate cable type selected accordingly before confirming your order.
  • Page 28 8 Basic Installation and Setup of the GNS183PEX Laying the Antenna Cable When laying the antenna cable, ensure that the specified maximum cable length is not exceeded. This length will depend on the selected cable type and its attenuation factor. If the specified maximum length is exceeded, correct transmission of the synchronization data and thus proper synchronization of the reference clock can no longer be guaranteed.
  • Page 29 The propagation of the signal from the antenna to the receiver (reference clock) can incur a certain delay. This delay can be compensated for in the Meinberg Monitoring Tool "MbgMon". If you are using standard Belden H155 or Ultraflex H2010 cable, the length of the cable can be simply entered in meters by selecting "By Length".

  • Page 30: Surge Protection And Grounding

    (e.g., DIN EN 60728-11) for more information. However, in order to preserve the safety of the building and to protect your Meinberg system, Meinberg recommends the use of the MBG-S-PRO surge protector, which is addressed in more detail later in this chap- ter.

  • Page 31: Electrical Bonding

    The installation instructions provided by the manufacturer must be observed when connecting the grounding cable. Once the antenna has been correctly installed with the grounding cable, connect the grounding cable to the bonding bar (see Fig. 5 and 6). GNS183PEX...
  • Page 32 8 Basic Installation and Setup of the GNS183PEX The following drawings illustrate how a Multi-GNSS Antenna can be installed in accordance with the above conditions on a pole (e.g., antenna pole) or building roof. Antenna Installation without Insulated Lightning Rod System α...
  • Page 33 Antenna Installation with Insulated Lightning Rod System α Fig. 6: Roof Installation Multi-GNSS Antenna Lightning Rod Lightning Rod Conductor Antenna Cable Bonding Conductor Bonding Bar Foundation Electrode Safety Zone GNS183PEX...

  • Page 34: Selecting A Location

    Optional MBG S-PRO Surge Protector Information: The surge protector and suitable coaxial cable are not included as standard with a Meinberg Multi- GNSS Antenna, but can be ordered as an optional accessory, during or after the purchase of your time server.
  • Page 35 (e.g., drill with suitable drill and screwdriver bits). An additional coaxial cable of sufficient length must be laid from the receiver to the installation location of the MBG-S-PRO. The cable is connected to the Type-N female connector of the surge protection via an Type-N male connector. GNS183PEX...

  • Page 36: Installation And Connection

    Important! The MBG-S-PRO must be connected to the same bonding bar as the connected Meinberg receiver in order to prevent destructive potential differences. Lay the coaxial cable from the antenna to the installation location of the surge protector and connect this cable to one of the connectors of the surge protector, then connect the coaxial cable from the Meinberg receiver or (primary) signal distributor to the other surge protector connector.

  • Page 37: Additional Information

    Chapter 12.3, “Technical Specifications: MBG-S-PRO Surge Protector” in the appendix as well as the manufacturer’s data sheet for detailed installation instructions and technical specifications for the MBG-S-PRO surge protector, including instructions on how to replace the gas cylinder: Data Sheet https://www.meinbergglobal.com/download/docs/shortinfo/english/cn-ub-280dc-bb_pc.pdf User Manual https://www.meinbergglobal.com/download/docs/manuals/english/eba_tt_cn_ub_280dc_9461776_09.pdf GNS183PEX...

  • Page 38: Installing The Gns183Pex In The Host System

    PC to dissipate before beginning with the installation. This chapter explains how to install the GNS183PEX in your PC or server system. Please note that this guide assumes that the card is being installed in an upright ATX or EATX enclosure.
  • Page 39 Ensure that the corresponding rear cover panel is removed if not already done. Insert the GNS183PEX into the PCI Express slot, taking care to hold the card by the edges while doing so. A certain amount of force may be required to ensure that the PCI Express connector is inserted securely into the slot;...

  • Page 40: Installation Of Drivers And Software

    Meinberg Time Service as long as the Meinberg Time Service is synchronized to a reference source. If this option is not selected, it is likely that the GNS183PEX and NTP service will clash and result in timing errors in the host PC clock.
  • Page 41 Ensure that the tab “Radio Clock” is selected in the lower half of the window. In the “Radio Clock” drop-down menu, ensure that GNS183PEX is selected. If your GNS183PEX does not appear in the menu, the drivers may not be correctly installed. In this case, remove the Meinberg Driver & Software Package (see Uninstallation below) and reinstall, ensuring that you do so with administrative privileges.

  • Page 42: Further Information

    Base at the following link: https://kb.meinbergglobal.com/kb/driver_software/driver_software_for_windows/mbgtools_for_windows Uninstallation The Meinberg Driver & Software Package can be uninstalled from the host PC using the “Uninstall” tool from the Windows Start Menu or from the Windows program management tool (Add/Remove Programs or Apps and Features).

  • Page 43: Installation Of Drivers And Software Under Linux

    Meinberg provides an all-in-one driver & tool package for Linux users that includes the drivers required to not only manage the GNS183PEX’s configuration and monitor its status but also to synchronize the host PC’s clock. The drivers and software must be built manually under Linux as they require a kernel module to be built for your specific kernel version.
  • Page 44 This should return one or more entries with “System peripheral: Meinberg Funkuhren” for each Meinberg PCI Express card in your system. If you have not already done so, you should download the Meinberg Linux Driver Package, which is avail- able from the Meinberg website at the following link: https://www.meinbergglobal.com/english/sw Once downloaded, you may unpack the .tar.gz archive into a suitable subdirectory with:...
  • Page 45 GNS183PEX’s operation. Uninstallation The Meinberg Driver & Tools Package can be uninstalled from the host PC by executing the following from the command line while in the directory in which the Meinberg Driver & Tools archive was unpacked:...
  • Page 46 When downloading a new driver archive, please ensure that you unpack it to a new folder. If you have downloaded the driver archive by cloning the Meinberg Git repository, you can update the contents of the build folder by pulling the latest updates to the Master branch by executing: git pull while the current directory is the build folder.

  • Page 47: Cable Connections

    Once this process has been completed, you can proceed with the configuration of your GNS183PEX. Please note that even once the GNS183PEX has a GNSS lock, it may take some time for your GNS183PEX to begin synchronizing the clock of the host PC and generate signals via the outputs, as the card’s oscillator still needs to adjust to the time reference.

  • Page 48: Mbgmon Guide

    PC. Set Ref. Clock Time: This is used to manually set the time of the GNS183PEX (not the host PC clock). This can be helpful to speed up the synchronization process as the GNS183PEX typically will not make hard adjustments to the time and may not adjust the time at all if the discrepancy between the reference clock’s...
  • Page 49 (relating to the Meinberg time services running on the host PC) and system-level events (relating to events logged by the GNS183PEX itself), and also load a previously saved log file for reference. The window also provides filter options to limit output to events...

  • Page 50: Upper Panel

    Time Adjustment Service (if any). 9.1.2.2 Time Service The Time Service tab of the upper panel shows a number of advanced settings relating to the Meinberg Time Service. Important! Any changes here must be saved using the Save button before switching to another tab.

  • Page 51: Expert Settings

    9.1.2.3 Service Events The Service Events tab of the upper panel contains a number of advanced settings relating to how the Meinberg Time Service responds to the GNS183PEX achieving and losing synchronization. Important! Any changes here must be saved using the Save button before switching to another tab.
  • Page 52 GNS183PEX loses synchronization with its reference signal and when it achieves synchronization respectively. Async Event This is the shell command that is executed when the GNS183PEX loses Command: synchronization with its reference signal. By default, this is set to net stop ntp, which will stop the NTP service.

  • Page 53: Lower Panel

    The Radio Clock tab of the lower panel shows status information relating to the selected reference clock, i.e., the GNS183PEX. This includes the current time of the reference clock, its operating mode, synchronization state, as well as GNSS-related information such as the detected position, the satellites that should be visible according to the current almanac, and those that the GNS183PEX actually has a lock on.
  • Page 54 GNS183PEX. The GNS183PEX assumes a delay of 4 ns per meter of Belden H155 or Ultraflex H2010 cable. Thus, by way of example, if 30 m is entered here, the GNS183PEX will apply a 120 ns correction to the received time.
  • Page 55 Calendar, changeovers can be handled automatically by selecting Calculated and modifying the following options: Beginning: This specifies the rules that allow the GNS183PEX to detect when Daylight Saving Time/Summer Time begins in this timezone. Taking the example of British Summer Time, which is defined to begin on the last Sunday in March at 01:00 GMT (i.e., the Sunday after March 25...
  • Page 56 9.1.3.5 COM Port The COM Port tab of the lower panel provides configuration options for the time string output of the GNS183PEX. The two tabs COM0 and COM1 relate to the RS-232 pin outputs in the box headers on the GNS183PEX board.
  • Page 57 The Pulses tab of the lower panel provides configuration options for the programmable signal output of the GNS183PEX. It features four tabs Out 1 through Out 4. These represent four signal channels on the GNS183PEX that are output via the pins PPO_0 to PPO_3 (Out 1 = PPO_0, Out 4 = PPO_3).
  • Page 58 “Synth”). 9.1.3.8 Synth The Synth tab of the lower panel provides configuration options for the frequency synthesizer of the GNS183PEX. The frequency synthesizer output is enabled by selecting the option Frequency Synthesizer as the output signal for one of the programmable signal channels ( Chapter 9.1.3.7,...
  • Page 59 9.1.3.11 Revision The Revision tab of the lower panel provides some internal information relating to the GNS183PEX, including the kernel version, device type, serial number, and firmware ID. Meinberg recommends making a note of this information when contacting Meinberg Technical Support, as it can be useful for diagnosing problems and find-...

  • Page 60: Gns183Pex Indicators And Connectors

    10 GNS183PEX Indicators and Connectors 10 GNS183PEX Indicators and Connectors Information: The numbering in the drawing above relates to the relevant subsection in this chapter. GNS183PEX...

  • Page 61: Am Timecode Output

    10.1 AM Timecode Output Connector Type: BNC, Female (on device) Output Signal: AM Timecode (IRIG-B12x, AFNOR NF S87-500 IEEE 1344, IEEE C37.118) Signal Level: / 1 V (MARK/SPACE) with 50 load Carrier Frequency: 1 kHz (IRIG-B12x) Cable: Coaxial Cable, Shielded GNS183PEX...

  • Page 62: Status Leds

    10 GNS183PEX Indicators and Connectors 10.2 Status LEDs “T ” LED: Initialization status of reference clock “N” LED: Navigation data (position/time) is available “A” LED: Antenna status “F ” LED: Lack of available reference sources Colors Description Blue The internal firmware is initializing and a connection is being established with the host PC.

  • Page 63: D-Sub 9 Output Port

    10.3 D-Sub 9 Output Port The D-Sub 9 output of the GNS183PEX provides out- puts for a number of clock signals generated on the GNS183PEX board. The output of certain pins is dependent on the state of the DIP switches on the board of the GNS183PEX.

  • Page 64: Antenna Input: Gns Receiver

    10 GNS183PEX Indicators and Connectors 10.4 Antenna Input: GNS Receiver Danger! Do not work on the antenna installation during thunderstorms! Danger of death from electric shock! • Do not carry out any work on the antenna installation or the antenna cable if there is a risk of lightning strike.

  • Page 65: Updating The Firmware

    11 Updating the Firmware While Meinberg continuously updates the firmware of the GNS183PEX, it is generally not necessary to update your firmware so unless a specific need arises. If the firmware fails to install due to improper handling, your GNS183PEX may become inoperable and require servicing by Meinberg.

  • Page 66: Technical Appendix

    12 Technical Appendix 12 Technical Appendix GNS183PEX...

  • Page 67: Technical Specifications: 40 Db Multi-Gnss Antenna For Fixed-Location Applications

    12.1 Technical Specifications: 40 dB Multi-GNSS Antenna for Fixed-Location Applications The GNS183PEX is typically shipped with an active 40 dB Multi-GNSS Antenna manufactured by PCTEL. Detailed specifications and installation instructions for the PCTEL 40 dB Multi-GNSS Antenna are provided in the third-party manufacturer’s data sheet under the following links: Data Sheet: https://www.meinbergglobal.com/download/docs/datasheets/english/ds_gps-gln-l1-antenna.pdf...

  • Page 68: Technical Specifications: 27 Db Mobile Multi-Gnss Antenna For Mobile Applications

    12.2 Technical Specifications: 27 dB Mobile Multi-GNSS Antenna for Mobile Applications The GNS183PEX is typically shipped with an active 40 dB Multi-GNSS Antenna manufactured by PCTEL. Installation Diagram Detailed specifications are provided in the manufacturer’s data sheet. The data sheet for the SANAV RV-76G Mobile Multi-GNSS Antenna can be downloaded via the following link: https://www.meinbergglobal.com/download/docs/other/rv-76g_en.pdf...

  • Page 69: Overview Of Programmable Signals

    Data Sheet (Download): https://www.meinbergglobal.com/download/docs/shortinfo/english/cn-ub-280dc-bb_pc.pdf 12.4 Overview of Programmable Signals Meinberg systems with programmable pulse outputs provide the following signal options; the actual range of available signal options will vary from system to system: Idle Selecting "Idle" allows individual programmable outputs to be disabled individually.
  • Page 70 For example, if a cycle time of 1:45.00 is set, this will output pulses at intervals of 6300 seconds. However, between the last pulse of any given day and the pulse at midnight on the following day, there will be an interval of just 4500 seconds. GNS183PEX...
  • Page 71 DC level shift timecode. The timecode output here is configured in the “Clock” “IRIG Settings” section of the Web Interface. Synthesizer Frequency This mode is used to output a custom frequency, which is defined using the “Clock” “Synthesizer” sec- tion of the Web Interface. GNS183PEX...

  • Page 72: Time String Formats

    12.5.1 Meinberg Standard Time String The Meinberg Standard time string is a sequence of 32 ASCII characters, starting with the character <STX> (Start of Text, ASCII code 02h) and terminated with the character <ETX> (End of Text, ASCII code 03h). The format is as follows: <STX>D:dd.mm.yy;T:w;U:hh.mm.ss;uvxy<ETX>...

  • Page 73: Meinberg Gps Time String

    12.5.2 Meinberg GPS Time String The Meinberg GPS time string is a sequence of 36 ASCII characters, starting with the <STX> (Start of Text) character and ending with the <ETX> (End of Text) character. Unlike the Meinberg Standard time string, it does not contain UTC time or time adjusted to any local time zone.

  • Page 74: Meinberg Capture Time String

    12 Technical Appendix 12.5.3 Meinberg Capture Time String The Meinberg Capture time string is a sequence of 31 ASCII characters, terminated with the sequence <CR> (Carriage Return, ASCII code 0Dh) and <LF> (Line Feed, ASCII code 0Ah). The format is as follows: CHx<SP>dd.mm.yy_hh:mm:ss.fffffff<CR><LF>...

  • Page 75: Atis Time String

    (00–59) ss seconds (00–59, or 60 during leap second) Day of the Week (1–7, 1 = 31h = Monday) Checksum in hexadecimal, generated from all characters including GID, ABS, TSQ, CC, ST, etc. Carriage Return, ASCII code 0Dh <CR> GNS183PEX...

  • Page 76: Sat Time String

    Announcement for time jump during last hour before event: “!” Announcement of start or end of Daylight Saving Time “ ”(Space, ASCII code 20h) nothing announced Carriage Return, ASCII code 0Dh <CR> Line Feed, ASCII code 0Ah <LF> End of Text, ASCII code 03h <ETX> GNS183PEX...

  • Page 77: Uni Erlangen Time String (Ntp)

    Leap second is currently to be inserted (only active in 60th second) “ ” (Space, ASCII code 20h) No leap second announced Geographical latitude of the receiver position in degrees bbb.bbbb Leading zeroes are padded with spaces (ASCII code 20h) GNS183PEX...
  • Page 78 Prime meridian hemisphere, possible characters are: “E” East of Greenwich Meridian “W” West of Greenwich Meridian Altitude in meters of receiver position above WGS84 ellispoid hhhh Leading zeroes are padded with spaces (ASCII code 20h) End of Text, ASCII code 03h <ETX> GNS183PEX...

  • Page 79: Nmea 0183 String (Rmc)

    West of Greenwich Meridian Speed over the ground in knots and track angle in degrees. 0.0,0.0 With a Meinberg GPS clock, these values are always 0.0, with GNS clocks, the values are calculated by the receiver for mobile applications. Current Date:...

  • Page 80: Nmea 0183 Time String (Gga)

    Meters (unit as fixed value) Geoid Separation (WGS84 Altitude - MSL Altitude) ggg.g Meters (unit as fixed value) Checksum (XOR sum of all characters except "$" and " * ") Carriage Return, ASCII code 0Dh <CR> Line Feed, ASCII code 0Ah <LF> GNS183PEX...

  • Page 81: Nmea 0183 Time String (Zda)

    (00– 13) Minutes (00–59) The date: dd,mm,yy Day of Month (01–31) Month (01–12) Year (0000–9999) yyyy Checksum (XOR of all characters except "$" and " * ") Carriage Return (ASCII code 0Dh) <CR> Line Feed (ASCII code 0Ah) <LF> GNS183PEX...

  • Page 82: Abb Spa Time String

    (000–999) Checksum. This is calculated as the XOR sum of the preceding characters. The resultant 8-bit value is reported as a hex value in the form of two ASCII characters (0-9 or A-F) Carriage Return (ASCII code 0Dh) <CR> GNS183PEX...

  • Page 83: Computime Time String

    Day of the month (01–31) Day of the week (01–07, 01 = Monday) The current time: hh:mm:ss Hours (00–23) Minutes (00–59) Seconds (00–59, or 60 during leap second) Carriage Return, ASCII code 0Dh <CR> Line Feed, ASCII code 0Ah <LF> GNS183PEX...

  • Page 84: Racal Time String

    Control character (ASCII code 47h) Control character (ASCII code 55h) Current date: yymmdd Year of Century (00–99) Month (01–12) Day of Month (01–31) Current time: hh:mm:ss Hours (00–23) Minutes (00–59) Seconds (00–59, or 60 during leap second) Carriage Return (ASCII code 0Dh) <CR> GNS183PEX...

  • Page 85: Sysplex-1 Time String

    (00–59) Seconds (00–59, or 60 during leap second) Clock Status: Space (ASCII code 20h) Time Sync (GPS Lock) “?” (ASCII code 3Fh) No Time Sync (GPS Fail) Carriage Return, ASCII code 0Dh <CR> Line Feed, ASCII code 0Ah <LF> GNS183PEX...

  • Page 86: Ion Time String

    (00–59) Seconds (00–59, or 60 while leap second) Quality Indicator Space (ASCII code 20h) Time Sync (GPS Lock) “?” (ASCII code 3Fh) No Time Sync (GPS Fail) Carriage Return (ASCII code 0Dh) <CR> Line Feed (ASCII code 0Ah) <LF> GNS183PEX...

  • Page 87: Ion Blanked Time String

    (00–59) Seconds (00–59, or 60 during leap second) Clock Status: Space (ASCII code 20h) Time Sync (GPS Lock) “?” (ASCII code 3Fh) No Time Sync (GPS Fail) Carriage Return, ASCII code 0Dh <CR> Line Feed, ASCII code 0Ah <LF> GNS183PEX...

  • Page 88: Irig-J Timecode

    Start of Header (ASCII code 01h) <SOH> Day of the year (ordinal date, 1–366) Time of the start bit in hours (HH), minutes (MM), seconds (SS) HH, MM, SS Carriage Return, ASCII code 0Dh <CR> Line Feed, ASCII code 0Ah <LF> GNS183PEX...

  • Page 89: 6021 Time String

    UTC time, while the 3-bit value represented by the least significant bits 001 indicates that the day is Monday. Current time: hhmmss Hours (00–23) Minutes (00–59) Seconds (00–59, or 60 during leap second) Current date: ddmmyy (01–31) Month (01–12) Last two digits of year (00–99) GNS183PEX...
  • Page 90 * With ASCII nibbles, the actual ASCII character itself (0-9, A-F, ASCII codes 0x30h–0x39h and 0x41h–0x46h) represents the hexadecimal equivalent of a 4-bit binary sequence. For example, if the clock outputs “A” at these positions, this is equivalent to a binary sequence of 0x1010b. Please note that it is not the binary equivalent of the ASCII code (0x41h) itself. GNS183PEX...

  • Page 91: Freelance Time String

    UTC time, while the 3-bit value represented by the least significant bits 001 indicates that the day is Monday. Current time: hhmmss Hours (00–23) Minutes (00–59) Seconds (00–59, or 60 during leap second) Current date: ddmmyy (01–31) Month (01–12) Last two digits of year (00–99) GNS183PEX...
  • Page 92 * With ASCII nibbles, the actual ASCII character itself (0-9, A-F, ASCII codes 0x30h–0x39h and 0x41h–0x46h) represents the hexadecimal equivalent of a 4-bit binary sequence. For example, if the clock outputs “A” at these positions, this is equivalent to a binary sequence of 0x1010b. Please note that it is not the binary equivalent of the ASCII code (0x41h) itself. GNS183PEX...

  • Page 93: Itu-G8271-Y.1366 Time-Of-Day Message

    PPS. The ITU-G8271-Y.1366 time message itself output by Meinberg clocks is always a sequence of 21 bytes. While the standard briefly references the use of two ASCII characters for the first two characters, it should be noted that this message is not an ASCII string in the typical sense.

  • Page 94: Cisco Ascii Time String

    Sync state of clock: * : Clock is synchronized to reference !: Clock is not synchronized The format revision. With Meinberg clocks, this will always be ’A’. The current date in Modified Julian Date format. mjdxx The current date in Gregorian yy/mm/dd format.

  • Page 95: Ntp Type 4 Time String

    Hours (00–23) Minutes (00–59) Seconds (00–59, or 60 while leap second) Milliseconds (000–999) Leap second announcement: Space: No leap second announcement ’L’: Leap second pending Daylight Savings Time indicator: ’S’: Standard Time (wintertime) ’D’: Daylight Savings Time (summertime) GNS183PEX...

  • Page 96: General Information About Timecode

    In addition to these general-purpose time signals, there are other codes in use designed for specific appli- cations, among them NASA36, XR3, or 2137. The GNS183PEX, however, limits itself to the output of IRIG-A, IRIG-B, AFNOR NF S87-500, and IEEE 1344 formats, as well as IEEE C37.118, the successor to IEEE 1344.
  • Page 97 Identical to IEEE 1344, but with UTC offset +/- sign bit reversed NASA 36: 100 pps, AM sine-wave signal, 1 kHz carrier frequency, Time Resolution: 10 ms (DCLS), 1 ms (AM carrier) BCD time-of-year: 30 bits – seconds, minutes, hours, and days GNS183PEX...

  • Page 98: Timecode Format According To Irig Standard

    12 Technical Appendix 12.6.2 Timecode Format According to IRIG Standard GNS183PEX...

  • Page 99: Timecode Format According To Afnor Standard

    12.6.3 Timecode Format According to AFNOR Standard GNS183PEX...

  • Page 100: Rohs And Weee

    WEEE-compliant fashion, it may be returned to the manufacturer. Any transportation ex- penses for returning this product (at end-of-life) must be covered by the end user, while Meinberg will bear the costs for the waste disposal itself. GNS183PEX...

  • Page 101: Declaration Of Conformity For Operation In The European Union

    14 Declaration of Conformity for Operation in the European Union EU-Konformitätserklärung Doc ID: GNS183PEX-April 16, 2025 Hersteller Meinberg Funkuhren GmbH & Co. KG Manufacturer Lange Wand 9, D-31812 Bad Pyrmont erklärt in alleiniger Verantwortung, dass das Produkt, declares under its sole responsibility, that the product...

  • Page 102: Declaration Of Conformity For Operation In The United Kingdom

    15 Declaration of Conformity for Operation in the United Kingdom 15 Declaration of Conformity for Operation in the United Kingdom UK Declaration of Conformity Doc ID: GNS183PEX-April 16, 2025 Manufacturer Meinberg Funkuhren GmbH & Co. KG Lange Wand 9 31812 Bad Pyrmont...

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