Meinberg GPS180 Manual

Meinberg GPS180 Manual

Gps satellite receiver
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MANUAL
GPS180
GPS Satellite Receiver
8th November 2017
Meinberg Radio Clocks GmbH & Co. KG

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Summary of Contents for Meinberg GPS180

  • Page 1 MANUAL GPS180 GPS Satellite Receiver 8th November 2017 Meinberg Radio Clocks GmbH & Co. KG...
  • Page 3: Table Of Contents

    ..........3 General Information GPS 4 The Modular System GPS180 5 GPS180 Features Time Zone and Daylight Saving .
  • Page 4 ..........12.1.1 Format of the Meinberg Standard Time String .
  • Page 5: Imprint

    1 Imprint 1 Imprint 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 - 30 Internet: http://www.meinberg.de...
  • Page 6: Safety Instructions For Building-In Equipment

    (40 C by using Rubidium). • For safe operation the building-in equipment must be protected by max 16 A fuse in the power installation system. • Disconnection of the equipment from mains is done by pulling the mains plug. Date: 8th November 2017 GPS180...
  • Page 7: Used Symbols

    This product is handled as a B2B category product. In order to secure a WEEE compliant waste disposal it has to be returned to the manufacturer. CE label This device follows the provisions of the directives 93/68/EEC GPS180 Date: 8th November 2017...
  • Page 8: General Information Gps

    3 General Information GPS The satellite receiver clock GPS180 has been designed to provide extremly precise time to its user. The clock has been developed for applications where conventional radio controlled clocks can´t meet the growing require- ments in precision. High precision available 24 hours a day around the whole world is the main feature of this system which receives its information from the satellites of the Global Positioning System.
  • Page 9: The Modular System Gps180

    4 The Modular System GPS180 The satellite controlled clock GPS180 is ready to operate and can be installed in a metal 19" Modular chassis. The interfaces provided by GPS180 are accessible via connectors in the rear panel of the case.
  • Page 10: Gps180 Features

    The GPS180 provides different optional outputs, e.g. three progammable pulse outputs, modulated/unmodu- lated time code output, and up to a total of four RS232 COM ports. Additionally, you can order the GPS180 with different OCXOs (e.g. OCXO-LQ / MQ / HQ / DHQ or an external Rubidium) to match the required accuracy.
  • Page 11: Pulse And Frequency Outputs

    COM0 is compatible with other radio remote clocks made by Meinberg. It sends the time string either once per second, once per minute or on request with ASCII ´?´ only. Also the interfaces can be configured to transmit capture data either automatically when available or on request.
  • Page 12: Time Code (Option)

    "Inter Range Instrumentation Group" (IRIG) in the early 60´s. Except these "IRIG Time Codes", other formats like NASA36, XR3 or 2137 are still in use. The board GPS180 however generates the IRIG-B, AFNOR NFS 87-500 code as well as IEEE1344 code which is an IRIG-B123 coded extended by information for time zone, leap second and date.
  • Page 13: Block Diagram Time Code

    5 GPS180 Features 5.6.2 Block Diagram Time Code GPS180 Date: 8th November 2017...
  • Page 14: Irig Standard Format

    5.6.3 IRIG Standard Format Date: 8th November 2017 GPS180...
  • Page 15: Afnor Standard Format

    5 GPS180 Features 5.6.4 AFNOR Standard Format GPS180 Date: 8th November 2017...
  • Page 16: Assignment Of Cf Segment In Ieee1344 Code

    IRIG-B time 1.) current firmware does not support leap deletion of leap seconds 2.) TFOM is cleared, when clock is synchronized first after power up. see chapter Selection of generated timecode Date: 8th November 2017 GPS180...
  • Page 17: Generated Time Codes

    5 GPS180 Features 5.6.6 Generated Time Codes Besides the amplitude modulated sine wave signal, the board also provides unmodulated DC-Level Shift TTL output in parallel. Thus six time codes are available. a) B002: 100 pps, DCLS signal, no carrier BCD time-of-year...
  • Page 18: Selection Of Generated Time Code

    For testing purposes the output of TFOM in IEEE1344 mode can be disabled. The segment is set to all zeros then. 5.6.8 Outputs The module GPS180 provides modulated (AM) and unmodulated (DCLS) outputs. The format of the timecodes is illustrated in the diagramms "IRIG-" and "AFNOR standard-format". 5.6.8.1 AM - Sine Wave Output The carrier frequency depends on the code and has a value of 1 kHz (IRIG-B).
  • Page 19: Installation

    6 Installation 6.1 Power Supply The power supply used with a GPS180 has to provide only one output of +5V. The output voltage should be well regulated because drifting supply voltages reduce the short time accuracy of the generated frequencies and timing pulses.
  • Page 20: Antenna Assembly With Surge Voltage Protection

    GPS Antenna N-Norm female N-Norm male Cable Slot N-Norm male N-Norm female as short as possible N-Norm female Meinberg GPS N-Norm male N-Norm male female Ground lead to PE rail or BNC male female (Protective Earth) Cable ca. 1,5 mm Ø...
  • Page 21: Antenna Short-Circuit

    In case of an antenna line short-circuit the following message appears in the display: If this message appears the clock has to be disconnected from the mains and the defect eliminated. After that the clock can be powered-up again. The antenna supply voltage must be 15V GPS180 Date: 8th November 2017...
  • Page 22: Technical Specifications Gps Antenna

    first IF frequency: 35.4 MHz Power Requirements: 12V ... 18V, @ 100mA (provided via antenna cable) Connector: N-Type, female Ambient Temperature: -40 ... +65 C Housing: ABS plastic case for outdoor installation (IP66) Physical Dimension: Date: 8th November 2017 GPS180...
  • Page 23: Powering Up The System

    OCXO´s output frequency has been adjusted. Up to that time accuracy of frequency drops to 10-8 reducing the accuracy of pulses to +-5 s. GPS180 Date: 8th November 2017...
  • Page 24: The Front Panel Layout

    278 , 5 Hz + 93 , 0 menus in detail. FAIL LOCK satellite controlled clock NORMAL OPERATION Mon , dd.mm.yyyy 12: 00 : 00 278 , 5 Hz + 93 , 0 MENU NEXT Date: 8th November 2017 GPS180...
  • Page 25: Menu Key

    If the current menu just displays data (cursor not visible) pressing this key NEXT switches to a submenu (if available). 7.6 INC Key When editing parameters this key increments the digit or letter at the cursor position. GPS180 Date: 8th November 2017...
  • Page 26: The Menus In Detail

    "....(free)" The frequency is generated, but the phase is not synchronous to the pulse output P_SEC, either because the synthesizer is enabled although GPS180 has not synchronosized jet or be cause the frequency is setted to more than 10kHz. "....(drft)"...
  • Page 27: Menu Receiver Pos

    The next format is geographic, too, with latitude and longitude displayed in degrees with fractions of degrees. The third format displays the receiver position in earth centered, earth fixed coordinates (ECEF coordinates). The three formats are shown below: GPS180 Date: 8th November 2017...
  • Page 28: Menu Sv Constellation

    (see below). The NEXT key lets the display toggle between the two capture channels. If an error message ("Cap. Overrun" or "Cap. Buffer Full") is displayed in the second line it can be acknowledged pressing the CLR/ACK key. Date: 8th November 2017 GPS180...
  • Page 29: Menu Log Event

    Events which generate a log entry are e.g. power up reset, beginning and end of antenna problems, and changes in the mode of operation, e.g. cold boot, warm boot, normal operation. GPS180 Date: 8th November 2017...
  • Page 30: Menu Setup

    10.00 kHz only, if a higher frequency is selected a message "(phase ignored)" informs the user that the phase value is ignored. The synthesizer is re-initialized with the parameters on the display if the CLR/ACK key is pressed. Date: 8th November 2017 GPS180...
  • Page 31: Setup Enable Outputs

    UTC to local time, e.g. MEZ = UTC + 1h and MESZ = UTC + 2h for central europe. The range of date daylight saving comes in effect can be entered using the next two topics of the setup menu. 8.7.4 SETUP IP CFG SETINGS (XPORT) GPS180 Date: 8th November 2017...
  • Page 32: Setup Daylight Sav On/Off

    (see fig. below). In addition identical offsets for DAYLIGHT SAV ON/OFF should be configured in the submenu TIMEZONE. Example: For a region without daylight saving time and with a local time offset of +8 hours to UTC. Date: 8th November 2017 GPS180...
  • Page 33: Setup Serial Port Parm

    Default parameters are: COM0: Meinberg COM2: Meinberg COM1: Capture COM3: Meinberg The following time strings can be selected: • Meinberg Standard String • Meinberg Capture String • SAT String • UNI-Erlangen String • NMEA String (RMC) • SPA String •...
  • Page 34: Setup Serial String Mode

    "On Request" is selected it is the user´s responsibility to read out the capture buffer by sending an ASCII "?" to COMx or by the binary protocol via COM0 in order to avoid a buffer-overrun and the loss of new trigger events. Date: 8th November 2017 GPS180...
  • Page 35: Setup Pout X (Optional)

    ’On Time’ 10.45.00, ’Off Time’ 9.30.00 would cause an active ouput from 10.45 to 9.30 (the next day!). If one or more of the three switching times are unused just enter the same time into the fields ’On Time’ and ’Off Time’. In this case the switch time does not affect the output. GPS180 Date: 8th November 2017...
  • Page 36 These modes generate pulses of defined length once per second, once per minute or one per hour. ’Single Shot Time’ determines the pulse duration (10 msec...10 sec). The respective output remains in active state, when selecting a pulse duration longer than 990ms in pulse per sec mode. Date: 8th November 2017 GPS180...
  • Page 37 8 The Menus in Detail 8.7.9.6 Menu Quick Reference for progr. Pulse GPS180 Date: 8th November 2017...
  • Page 38: Setup Time Code Settings (Optional)

    8.7.10 SETUP TIME CODE SETTINGS (optional) This menu lets the user select the time codes to be generated by GPS180. Most IRIG codes do not carry any time zone information, hence UTC is selected for output by default. If desired, the clock´s local time can be output by selecting "TIME: LOCAL".
  • Page 39: Init User Parms

    5ns per meter antenna cable. The receiver is able to compensate this delay if the exact cable length is given. The default value is 20m. The maximum value that can be entered is 600m (only with low loss cable). GPS180 Date: 8th November 2017...
  • Page 40: Resetting Factory Defaults

    The key should be held until the root menu is displayed on LCD. Due to the fact that the satellites’ parameters have been cleared, the system comes up in COLD BOOT mode. Date: 8th November 2017 GPS180...
  • Page 41: Menu Quick Gps180 Reference

    9 Menu Quick GPS180 Reference 9 Menu Quick GPS180 Reference GPS180 Date: 8th November 2017...
  • Page 42: Firmware Updates

    If the MENU key on the front panel is pressed while the system is powered up, a bootstrap-loader is ac- tived and waits for instructions from the serial port COM0. The new firmware can be sent to GPS180 from any standard PC with serial interface.
  • Page 43: Skilled/Service-Personnel Only: Replacing The Lithium Battery

    Danger of explosion in case of inadequate replacement of the lithium battery. Only identical batteries or bat- teries recommended by the manufacturer must be used for replacement. The waste battery must be disposed as proposed by the manufacturer of the battery. GPS180 Date: 8th November 2017...
  • Page 44: Technical Specifications Gps180

    12 Technical Specifications GPS180 Receiver: 12 - channel C/A code receiver with external antenna/converter unit Antenna: antenna/converter unit with remote power supply refer to chapter "Technical specifications of antenna" Power Supply 15 V DC, continuous short circuit protection, automatic recovery...
  • Page 45 300, 600, 1200, 2400, 4800, 9600, 19200 Baud Framing: 7E1, 7E2, 7N2, 7O1, 7O2, 8E1, 8N1, 8N2, 8O1 default setting: COM0: 19200, 8N1 Meinberg Standard time string, per second COM1: 9600, 8N1 Capture string, automatically Time Code Outputs: Unbalanced modulated sine wave signal:...
  • Page 46 ACCURACY OF FREQUENCY AND PULSE OUTPUTS: Date: 8th November 2017 GPS180...
  • Page 47 12 Technical Specifications GPS180 Steckerbelegung / Pin Assignment GPS180 / Signals / used Signals r e i Stecker: 96-polige VG-Leiste DIN 41612 a+b+c Connector: 96-pin VG-male DIN 41612 a+b+c IdentNr.: GPS180_V140_CON GPS180 Date: 8th November 2017...
  • Page 48: Time Strings

    12.1 Time Strings 12.1.1 Format of the Meinberg Standard Time String The Meinberg Standard Time String is a sequence of 32 ASCII characters starting with the STX (start-of-text) character and ending with the ETX (end-of-text) character. The format is: <STX>D:dd.mm.yy;T:w;U:hh.mm.ss;uvxy<ETX>...
  • Page 49: Format Of The Meinberg Gps Time String

    12.1.2 Format of the Meinberg GPS Time String The Meinberg Standard 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. Contrary to the Meinberg Standard Telegram the Meinberg GPS Timestring carries no local timezone or UTC but the direct GPS time without conversion into UTC.
  • Page 50: Format Of The Meinberg Capture String

    12.1.3 Format of the Meinberg Capture String The Meinberg Capture String is a sequence of 31 ASCII characters terminated by a CR/LF (Carriage Return/- Line Feed) combination. The format is: CHx_tt.mm.jj_hh:mm:ss.fffffff <CR><LF> The letters printed in italics are replaced by ASCII numbers whereas the other characters are part of the time string.
  • Page 51: Format Of The Sat Time String

    12 Technical Specifications GPS180 12.1.4 Format of the SAT Time String The SAT Time String is a sequence of 29 ASCII characters starting with the STX (start-of-text) character and ending with the ETX (end-of-text) character. The format is: <STX>dd.mm.yy/w/hh:mm:ssxxxxuv<ETX> The letters printed in italics are replaced by ASCII numbers whereas the other characters are part of the time string.
  • Page 52: Format Of The Uni Erlangen String (Ntp)

    ‘ ‘ (space, 20h) no leap second is inserted bbb.bbbb latitude of receiver position in degrees leading signs are replaced by a space character (20h) latitude, the following characters are possible: ‘N’ north of equator Date: 8th November 2017 GPS180...
  • Page 53 12 Technical Specifications GPS180 ‘S’ south d. equator lll.llll longitude of receiver position in degrees leading signs are replaced by a space character (20h) 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>...
  • Page 54: Format Of The Nmea 0183 String (Rmc)

    (01..31) month (01..12) year of the century (00..99) magnetic variation checksum (EXOR over all characters except ‘$’ and ‘*’) <CR> Carriage Return, ASCII Code 0Dh <LF> Line Feed, ASCII Code 0Ah Date: 8th November 2017 GPS180...
  • Page 55: Format Of The Nmea 0183 String (Gga)

    12 Technical Specifications GPS180 12.1.7 Format of the NMEA 0183 String (GGA) The NMEA (GGA) String is a sequence of characters starting with the ‘$GPRMC’ character and ending with the characters CR (carriage return) and LF (line-feed). The format is: $GPGGA,hhmmss.ss,bbbb.bbbbb,n,lllll.ll,e,A,vv,hhh.h,aaa.a,M,ggg.g,M„0*cs<CR><LF>...
  • Page 56: Format Of The Nmea 0183 String (Zda)

    (00..59) dd,mm,yy the current date: day of month (01..31) month (01..12) yyyy year (0000..9999) checksum (EXOR over all characters except ‘$’ and ‘*’) <CR> Carriage Return, ASCII Code 0Dh <LF> Line Feed, ASCII Code 0Ah Date: 8th November 2017 GPS180...
  • Page 57: Format Of The Abb Spa Time String

    12 Technical Specifications GPS180 12.1.9 Format of the ABB SPA Time String The ABB SPA Time String is a sequence of 32 ASCII characters starting with the characters ">900WD" and ending with the <CR> (Carriage Return) character. The format is: >900WD:yy-mm-tt_hh.mm;ss.fff:cc<CR>...
  • Page 58: Format Of The Computime Time String

    (01..07, 01 = monday) hh:mm:ss the current time: hours (00..23) minutes (00..59) seconds (00..59, or 60 while leap second) <CR> Carriage Return, ASCII Code 0Dh <LF> Line Feed, ASCII Code 0Ah Date: 8th November 2017 GPS180...
  • Page 59: Format Of The Racal Standard Time String

    12 Technical Specifications GPS180 12.1.11 Format of the RACAL standard Time String The RACAL standard Time String is a sequence of 16 ASCII characters terminated by a X (58h) character and ending with the CR (Carriage Return, ASCII Code 0Dh) character. The format is: <X><G><U>yymmddhhmmss<CR>...
  • Page 60: Format Of The Sysplex-1 Time String

    (00..23) minutes (00..59) seconds (00..59, or 60 while leap second) Quality indicator (space) Time Sync (GPS lock) (?) no Time Sync (GPS fail) <CR> Carriage-return (ASCII code 0Dh) <LF> Line-Feed (ASCII code 0Ah) Date: 8th November 2017 GPS180...
  • Page 61: Format Of The Ion Time String

    12 Technical Specifications GPS180 12.1.13 Format of the ION Time String The ION time string is a sequence of 16 ASCII characters starting with the SOH (Start of Header) ASCII controll character and ending with the LF (line feed, ASCII Code 0Ah) character. The format is: <SOH>ddd:hh:mm:ssq<CR><LF>...

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