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GPS Timing Receiver for eMGW/MGW System Installation and Operation ManualFebruary 2005 Alvarion P/N 214028 Symmetricom P/N 197-03850-02, Issue 1

11 Chapter 1 - System Description In this Chapter  Introduction, page 1-2  Command Channel and Control-Display-Unit (CDU) Ports, page 1-3  Alvari

Chapter 1 - System Description Introduction Optimized for the Alvarion eMGW/MGW System, the GPS Receiver is a complete, stand-alone, Global Positio

Command Channel and Control-Display-Unit (CDU) Ports Command Channel and Control-Display-Unit (CDU) Ports The Command Channel rear panel port enable

Chapter 1 - System Description Alvarion Hardware GPS Receiver: Specification The GPS Timing Receiver for the Alvarion eMGW/MGW System, includes fit

Alvarion Hardware The positive and negative supply leads may be left floating or either one may be connected to Ground (encompassing the -48V teleco

Chapter 1 - System Description 1PPS Pulse Format1PPS Pulse2.048 MHzNew secondmark488ns1 secondNew secondmark Figure 1-3: 1PPS Pulse 2.048 MHz This

Alvarion Hardware LEDs A set of three function (or mode) indicators are located on the front panel. These consist of colored LEDs configured to illu

22 Chapter 2 - Installation In this Chapter:  Installation, page 2-2  Position Location, page 2-22

Error! No text of specified style in document. GPS Timing Receiver Installation and Operation Manual ii

Chapter 2 - Installation Installation Installing a basic system will require the following: Mounting of the antenna and the 2 lightning arrestors

Installation Figure 2-2: Typical Antenna Mounting CAUTION DO NOT allow the pole or other surfaces to extend higher than the underside of the

Chapter 2 - Installation Be especially wary about mounting the antenna directly onto the fascia of a flat roof. To overcome this situation, elevate

Installation There is no way to provide 100% protection for electronic equipment from direct strike damage. It is possible however, to reduce the li

Chapter 2 - Installation Case 2 In case that the GPS antenna is not exposed to direct lightning hit it is recommended to use the regular protectio

Installation Having thereby passed a large proportion of the lightning discharge current to earth, it is then necessary to make provision to deal wi

Chapter 2 - Installation At the GPS Receiver Unit After taking the precautions described previously in the antenna installation, it should be under

Installation Figure 2-4: Example of Connections GPS Timing Receiver Installation and Operation Manual 2-9

Chapter 2 - Installation The Lightning Arrestor The lightening arrestor kit contains 5 parts: 1. The Lightning Arrestor quantity 2. 2. Grounding

Installation Detailed Installation procedure Installing the Surge Protection Install the lightning arrestor on the mast as shown in Figure 2-3. Ins

About this Guide  Chapter 1 – System Description. This chapter gives an introduction to the GPS Receiver and describes the command channel and cont

Chapter 2 - Installation Figure 2-7: Connecting the TNC to N-type Adaptor Connecting the Grounding Cable Connect the other side of the grounding

Installation Figure 2-8: Connecting the RF TNC-type side to the “Equipment” side GPS Timing Receiver Installation and Operation Manual 2-13

Chapter 2 - Installation Connecting the Surge side Connect the 50m coax cable from antenna to the Lightning Arrestor device – to the Surge side (if

Installation Connection Diagram GPS ReceiverTo TNC RF connector(rear)RF cableL=1mPROTECTORDGXZ+15TFTF-AGround Bus19 inch RackGround cable AWG8L=3

Chapter 2 - Installation Mounting the GPS Receiver The GPS Timing Receiver is designed for integral mounting within a standard 19 inch telecommuni

Installation Cable and Power Connections Electrical installation must only be carried out by suitably qualified personnel. Particular attention sho

Chapter 2 - Installation CAUTION Ensure the casing ground connection is the FIRST connection made to the unit, and the LAST to be disconnecte

Installation Table 2-1: J7 Pin Connection J 7 Connector PIN Connection, Function = Command Channel (as viewed at the GPS Receiver connector) Pin

Chapter 2 - Installation Time of Day Connection The Time of Day port outputs a message once every second. This output is NOT user configurable. Ta

Installation Table 2-3: J21 Pin Connections J 21 Connector 4-PIN Connector, Function = Power (viewed at the GPS Receiver connector) Cable Core co

Chapter 2 - Installation Position Location When extracting data from the Global Positioning System, there are four unknown variables which the GPS

Position Location User Entered Position In an attempt to expedite the surveying process, the GPS Receiver may be given a position (e.g. entered manu

33 Chapter 3 - Operations In this Chapter  Operation, page 3-2  Indicators, page 3-2  Command Channel Operation, page 3-3

Appendix A - Technical Data Symmetricom(PPGPS Receiver Operation The installation of the system is described in detail in Chapter 2 - of this ma

Operation Table 3-1: LED Display Conditions Yellow (no GPS) Green (Osc. On) Red Alarm Warm-up mode (~ 6 minutes from switch-on) Off Off Flash Af

AA Appendix A - Technical Data Symmetricom™ GPS Receiver GPS Timing Receiver: 12 channel C/A code, L1 frequency. Dimensions: 308mm W (12.14 inc

Appendix A - Technical Data Symmetricom(PPGPS Receiver 1PPS Output: Locked Time error < 100ns when locked to GPS signals. Unlocked Accu

Operation Indicators: LEDs 3 system status LEDs. Environmental Conditions: GPS Receiver Complies with ETSI 300 019-2-3, Class 3.1 (partly tempe

Contents Chapter 1 - System Description...1-1 Introduction ...

Appendix A - Technical Data Symmetricom(PPGPS Receiver Safety GPS Receiver complies with the following specifications when powered from a supply

BB Appendix B - EMC Emissions and Immunity The GPS Receiver system has been tested to the following standards and specifications:  EN 61000-6-3

Appendix B - EMC Emissions and Immunity However, there is no guarantee that interference will not occur in a particular installation. If this equip

CC Appendix C - Maintenance  Clean the instrument, use only mild soap solution.  Do not use high-pressure washing equipment

DD Appendix D - The Global Positioning System (GPS) The Global Positioning System (GPS) is a military satellite based system developed by the U.S. De

Tables It is a combination of the Universal Co-ordinated Time (UTC) traceable signal transmitted by the GPS satellites, used in conjunction with the

Tables To measure the range from the satellite to the receiver, two criteria are required: signal transmission time, and signal reception time. All

Tables The figures refer to 95% position fix accuracies, expressing the value of two standard deviations of radial error from the actual antenna pos

Tables Precise Positioning Service (PPS) This service is only available to authorised users with cryptographic equipment and special receivers. Acc

Contents Cable and Power Connections...2-17 Casing Ground Connection ...

EE Appendix E - Glossary 2D Two-dimensional 3D Three dimensional (i.e. including altitude) AGC Automatic Gain Control Almanac Data transmi

Tables CMD The Alvarion GPS unit’s Command Port. CMOS A type of semiconductor fabrication process (Complementary Metal Oxide Semiconductor), resu

Tables DSR Data Set Ready (serial communication handshaking) DTR Data Terminal Ready (serial communication handshaking) ECEF Earth Centred Earth

Tables HDOP Horizontal Dilution of Precision. IC Integrated Circuit. ICD Interface Control Document I/O Input - Output IODE Issue of Data Ephem

Tables NMEA National Marine Electronics Association. NMEA 0183 A serial communication standard defining hardware compatibility, message formats,

Tables RF Radio frequency RFI Radio Frequency Interference RMS Root Mean Square RS232 Serial communication hardware standard (+/- 12v nom

Tables TXD Transmit Data (serial communication from Data Terminal or ‘DTE’ to Data Communication Equipment or ‘DCE’) us, uSec Microsecond (u is f

Figures Figure 1-1: Alvarion GPS Timing Receiver ... 1-4 Figure 1-2: Output Connections ...

Tables Table 2-1: J7 Pin Connection.................. 2-19 Table 2-2: J8 Pin Connections .