Technical Information Operating Instructions GPS164xHS GPS164/AQ/xHS
Contact Information Meinberg Funkuhren GmbH & Co. KG Lange Wand 9 D-31812 Bad Pyrmont Telefon: ++49 (0) 52 81 / 9309-0 Telefax: ++49 (0) 52 81 / 9309-30 Internet: http://www.meinberg.de Email: info@meinberg.
Table of contents Contact Information............................................................................. 2 Content of the USB stick ..................................................................... 4 General information............................................................................. 5 Block diagram GPS164xHS................................................................. 6 GPS164xHS features............................................................................
BNC connector GPS Ant .......................................................... 18 Assignment of the terminal block ............................................ 18 Assignment of the DSUB connectors ...................................... 19 Replacing the lithium battery ............................................................ 19 CE label .............................................................................................. 19 Technical specifications GPS164xHS ...................................
General information The Meinberg satellite receiver clocks of the GPS164xHS series are available with several options. This manual describes the following models: GPS164DHS GPS164AHS GPS164DAHS GPS164/AQ/DHS GPS164/AQ/AHS GPS164/AQ/DAHS 19...72VDC 100...240VAC 100...240VDC optocoupler outputs PhotoMOS relay outputs X X X X X X X X X X X X X X The vaiants differ in power supply and the type of DC-isolation of the programmable pulse outputs.
Block diagram GPS164xHS 6
GPS164xHS features The GPS164xHS is designed for mounting on a DIN rail. The front panel integrates five LED indicators, a hidden push button, an eight-pole terminal block, theree DSUB- and three BNC-connectors. The receiver is connected to the antenna/converter unit by a 50 Ω-coaxial cable with length up to 300 m (when using RG58 cable). It is possible to connect up to four receivers to one antenna by using an optional antenna diplexer.
Pulse outputs The pulse generator of the satellite controlled clock GPS164xHS containes three independant channels and is able to generate a multitude of different pulses, which are configured with the software GPSMON32. The active state of each channel is invertible, the pulse duration settable between 10 msec and 10 sec in steps of 10 msec. In the default mode of operation the pulse outputs are disabled until the receiver has synchronized after power-up.
Asynchronous serial ports Two asynchronous serial interfaces (RS-232) called COM0 and COM1 are available to the user. In the default mode of operation, the serial outputs are disabled until the receiver has synchronized after power-up. However, the system can be configured to enable those outputs immediately after power-up. Transmission speeds, framings and the kind of the time string can be configured separately.
Available time codes The time code generator of the module GPS164xHS is able to generate the timecodes shown below. The modulated codes (IRIG B122/B123, AFNOR, IEEE1344) are available via the BNC-connector, the unmodulated codes (IRIG B002/B003 and IEEE1344) via a DSUB connector in the front panel. The unmodulated codes are available as a transistor output with internal pull up (470 Ω to +5V), with TTL-level into 50 Ω and with RS422 level.
IRIG standard format 11
AFNOR time code format 12
Assignment of CF Segment in IEEE1344 mode Bit No. De signation De scription 49 Position Identif ier P5 50 Year BCD encoded 1 51 Year BCD encoded 2 52 Year BCD encoded 4 53 Year BCD encoded 8 54 empty, always zero 55 Year BCD encoded 10 56 Year BCD encoded 20 57 Year BCD encoded 40 58 Year BCD encoded 80 59 Position Identifier P6 60 LSP - Leap Second Pending set up to 59s before LS insertion 61 LS - Leap Second 1.
DCF77 emulation The GPS164xHS satellite controlled clock generates time marks which are compatible with the time marks spread by the German long wave transmitter DCF77. If configured in GPSMON32, these time marks are available as pulse outputs. In addition, an AM-modulated carrier frequency of 77.5kHz is available via a BNCconnector in the front panel. This signal can be used as a replacement for a DCF77antenna.
Installation Power supply The variants of the module GPS164xHS are designed for following power supply options: GPS164DHS and GPS164/AQ/DHS: 19...72 VDC (DC-insulation 1.5 kVDC) GPS164AHS and GPS164/AQ/AHS: 100...240 VAC, 47...63 Hz GPS164DAHS and GPS164/AQ/DAHS : 100...240 VDC 100...240 VAC, 47...63 Hz The voltage feed of the DC variants is done via terminal blocks in the frontpanel of the clock and should have low resistance to minimize spurious emission (EMI).
Mounting the antenna The GPS satellites are not stationary but circle round the globe in a period of about 12 hours. They can only be received if no building is in the line-of-sight from the antenna to the satellite, so the antenna/converter unit must be installed in a location from which as much of the sky as possible can be seen. The best reception is given when the antenna has a free view of 8° angular elevation above horizon.
The front panel layout FAIL LED The FAIL LED is turned on whenever the receiver is not synchronous to the GPSsystem. DCF + Oc 1 - LOCK LED The LOCK LED is turned on if the receiver has acquired at least four satellites and has computed its position after power-up. In normal operation the receiver position is updated continuously as long as at least four satellites can be received.
BNC connector DCF Out The insulated AM-modulated carrier frequency is available using this connector. Connectors TC_Out ( AM / DCLS ) The modulated IRIG or AFNOR ti mecode signal is output at the BNC connector TC_Out ( AM ), the un-modulated time code signal is available at Sub-D Connector TC_Out ( DCLS ) BNC connector GPS Ant The antenna/converter unit is connected to the receiver circuit of the GPS164xHS through this connector.
Assignment of the DSUB connectors The serial ports COM0 and COM1 as well as the unmodulated IRIG/AFNOR time code signals are accessible via nine-pole DSUB connectors in the frontpanel. These RS-232 interfaces can be connected to a computer by using a standard modem cable. TxD describes the sending, RxD the receiving line of the GPS164xHS. Replacing the lithium battery The life time of the lithium battery on the board is at least 10 years.
Technical specifications GPS164xHS RECEIVER: 6 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" ANTENNA INPUT: Antenna circuit dc-insulated; dielectric strength: 1000V Length of cable: refer to chapter "Mounting the antenna" TIME TO SYNCHRONIZATION: one minute with known receiver position and valid almanac 12 minutes if invalid battery buffered memory BATTERY BACKUP: PULSE OUT
SERIAL PORTS: 2 independant asynchronous serial ports COM0 (RS-232) Baud Rate: 300 up to 19200 Framing: 7N2, 7E1, 7E2, 8N1, 8N2, 8E1 COM1 (RS-232, optional RS-485) Baud Rate: 300 up to 19200 Framing: 7N2, 7E1, 7E2, 8N1, 8N2, 8E1 time string selectable for COM0 and COM1 'standard Meinberg', 'SAT', 'Uni Erlangen (NTP)', 'NMEA-183' ( RMC ), and 'Computime' default settings: TIME CODE OUTPUTS: COM0: 19200, 8N1 COM1: 9600, 8N1 'standard Meinberg' for COM0 and COM1 time string per second mode of operation 'if
POWER REQUIREMENTS: GPS164DHS, GPS164/AQ/DHS 19...72 VDC DC-isolation 1.5 kVDC GPS164AHS, GPS164/AQ/AHS 100...240 VAC, 47...63 Hz fuse: 500 mA GPS164DAHS, GPS164/AQ/DAHS 100...240 VDC 100...240 VAC, 47...63 Hz fuse: 500 mA DIMENSION: GPS164DHS, GPS164/AQ/DHS 105 mm x 85 mm x 104 mm (height x width x depth) GPS164AHS, GPS164/AQ/AHS, GPS164DAHS,GPS164/AQ/DAHS 105 mm x 125.
Front views The following figures are showing the front panels of the variants of the module GPS164xHS: Standard Option PhotoMOS relays 23
Technical specifications of antenna ANTENNA: dielectrical patch antenna, 25 x 25mm receive frequency: 1575.42 MHz bandwidth: 9 MHz CONVERTER: local oscillator to converter frequency: first IF frequency: 10 MHz 35.4 MHz POWER REQUIREMENTS: 12V ... 18V, @ 100mA (provided via antenna cable) CONNECTOR: coax type N, female AMBIENT TEMPERATURE: -25 ...
Assembly with CN-UB/E (CN-UB-280DC) 25
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: D:dd.mm.yy;T:w;U:hh.mm.ss;uvxy 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: Start-Of-Text (ASCII code 02h) dd.mm.
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: tt.mm.jj/w/hh.mm.ssMEzzxy 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: Start-Of-Text (ASCII code 02h) dd.mm.yy the current date: dd day of month (01..31) mm month (01..
Format of the time string Uni Erlangen (NTP) The time string Uni Erlangen (NTP) of a GPS-clock is a sequence of 66 ASCII characters starting with the STX (start-of-text) character and ending with the ETX (end-of-text) character. The format is: tt.mm.jj; w; hh:mm:ss; voo:oo; acdfg i;bbb.bbbbn lll.lllle hhhhm The letters printed in italics are replaced by ASCII numbers whereas the other characters are part of the time string.
i leap second insertion ‘L’ leap second is actually inserted (active only in 60th sec.) ‘ ‘ (space, 20h) no leap second is inserted bbb.bbbb 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 of equator lll.
Format of the NMEA (RMC) string The NMEA String is a sequence of 65 ASCII characters starting with the ‘$’ character and ending with the characters CR (carriage return) and LF (line-feed). The format is: $GPRMC,hhmmss.ss,A,bbbb.bb,n,lllll.ll,e,0.0,0.0,ddmmyy,0.0,a*hh The letters printed in italics are replaced by ASCII numbers or letters whereas the other characters are part of the time string. The groups of characters as defined below: $ start character (ASCII-Code 24h) hhmmss.
Format of the Computime Time String The Computime time string is a sequence of 24 ASCII characters starting with the T character and ending with the LF (line feed, ASCII Code 0Ah) character. The format is: T:yy:mm:dd:ww:hh:mm:ss The letters printed in italics are replaced by ASCII numbers whereas the other characters are part of the time string.
The program GPSMON32 The program GPSMON32 can be used to monitor and program all essential functions of Meinberg GPS-Receivers. The Software is executable under Win9x/2k/ NT. To install GPSMON32 just run Setup.exe from the included diskette and follow the instructions of the setup program. To obtain a connection between your PC and the GPS-receiver, connect the receivers COM0 port to a free serial port of your PC.
Online Help The online help can be started by clicking the menu item 'Help' in menu Help. In every program window a direct access to a related help topic can be obtained by pressing F1. The help language can be selected by clicking the menu items Deutsch/ Englisch in the Help Menu.
