Meinberg GPS180SV User manual

MANUAL
GPS180SV
GPS Receiver Eurocard
21st June 2017
Meinberg Radio Clocks GmbH & Co. KG

Table of Contents
1 Imprint 1
2 General Information GPS 2
3 GPS180SV Features 3
3.1 TimeZoneandDaylightSaving ...................................... 3
3.2 PulseandFrequencyOutputs ....................................... 3
3.3 TimeCaptureInputs ............................................. 3
3.4 Asynchronous Serial Ports (optional 4x COM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.5 DCF77Emulation .............................................. 4
3.6 Programmablepulse ............................................. 4
3.7 TimeCode(Option) ............................................. 5
3.7.1 AbstractofTimeCode ....................................... 5
3.7.2 BlockDiagramTimeCode ..................................... 5
3.7.3 IRIGStandardFormat ....................................... 6
3.7.4 AFNORStandardFormat ..................................... 7
3.7.5 Assignment of CF Segment in IEEE1344 Code . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.7.6 GeneratedTimeCodes ....................................... 9
3.7.7 Selection of Generated Time Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.7.8 Outputs................................................ 10
3.7.9 TechnicalData............................................ 10
4 Installation 11
4.1 TheFrontPanelLayout........................................... 11
4.2 RS232COM0................................................. 11
4.3 MountingtheGPSAntenna ........................................ 12
4.3.1 Example: ............................................... 12
4.3.2 Antenna Assembly with Surge Voltage Protection . . . . . . . . . . . . . . . . . . . . . . . 13
4.4 PowerSupply................................................. 14
4.5 PoweringUptheSystem .......................................... 14
5 Safety Instructions 15
5.1 Skilled/Service-Personnel only: Replacing the Lithium Battery . . . . . . . . . . . . . . . . . . . . 15
6 Technical Specifications GPS180SV 16
6.1 Technical Specifications GPS Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7 The program GPSMON32 21
7.1 SerialConnection............................................... 21
7.2 NetworkConnection ............................................. 21
7.3 OnlineHelp.................................................. 22
Date: 21st June 2017 GPS180SV

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
Mail: [email protected]
Date: 2014-08-21
GPS180SV Date: 21st June 2017 1

2 General Information GPS
The satellite receiver clock GPS180SV 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
requirements 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.
The Global Positioning System (GPS) is a satellite-based radio-positioning, navigation, and time-transfer
system. It was installed by the United States Departement of Defense and provides two levels of accuracy: The
Standard Positioning Service (SPS) and the Precise Positioning Service (PPS). While PPS is encrypted and
only available for authorized (military) users, SPS has been made available to the general public.
GPS is based on accurately measuring the propagation time of signals transmitted from satellites to the user´s
receiver. A nominal constellation of 24 satellites together with several active spares in six orbital planes 20000
km over ground provides a minimum of four satellites to be in view 24 hours a day at every point of the globe.
Four satellites need to be received simultaneously if both receiver position (x, y, z) and receiver clock offset from
GPS system time must be computed. All the satellites are monitored by control stations which determine the
exact orbit parameters as well as the clock offset of the satellites´ on-board atomic clocks. These parameters
are uploaded to the satellites and become part of a navigation message which is retransmitted by the satellites
in order to pass that information to the user´s receiver.
The high precision orbit parameters of a satellite are called ephemeris parameters whereas a reduced pre-
cision subset of the ephemeris parameters is called a satellite´s almanac. While ephemeris parameters must
be evaluated to compute the receiver´s position and clock offset, almanac parameters are used to check which
satellites are in view from a given receiver position at a given time. Each satellite transmits its own set of
ephemeris parameters and almanac parameters of all existing satellites.
2 Date: 21st June 2017 GPS180SV