OSA4531 rev-i5
Contents
1. 3 6 1 Connectors Figure 3 4 Front Panel 9 18V Version LED 3 MHz E1 2 048MHz IPS AUX IN ANT IN og gen EV2 048MHz Es AUX IN ANT IN lp GY Wea 9 18V _ RS EN on A ge E ep DC 1 4A LA Figure 3 5 Front Panel 18 60V Version ANT IN BNC jack GPS Antenna Input AUX IN BNC jack Auxiliary Reference Input 2 048Mbps Output Signal G703 750 E1 2 048MHz BNC jack i 2 048MHz Output Signal G703 75Q 10MHz BNC jack 10MHz Sine Wave Output Signal 1Vams 50Q 1PPS BNC jack 1PPS Output Signal 2 4Vpp 50Q ACMOS 18 60V or 9 18V Weidmuller 5 08 2 poles Supply Voltage Input floating RS 232 SUB D 9p male RS 232 Communication Port ALARM Weidmuller 5 08 3 poles Electrical Alarm Output Ri Signal Ground Table 3 1 Connector Description OSA 4531 E1 User Manual Revision August 2009 3 6 Equipment Description 3 6 2 Operational State Alarm Conditions Initialisation Warm Up Tracked Fast OCXO GPS AUX IN Antenna Holdover Bicolor LED Green Red Red blinking Green blinking Red Green blinking OFF Failure Blank 0 no alarm condition or masked alarm condition 1 active alarm condition ALARM Output ON OFF NT Te Table 3 2 Operational State OSA 4531 E1 User Manual Revision I August 2009 3 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 Equipment Description 3 8 Installation Chapter 4 I2. OSA 4531 E1 GPS SB GPS Synchronization Box USER MANUAL Model 945 453 1S0 x00 OSA 4531 E1 User Manual Revision I August 2009 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 E What s new in this revision SUB D connector description distinguish male or female OSA 4531 E1 User Manual Revision I August 2009 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 E Contents Table of Contents COO MATT 1 1 1 1 AO MIS EI UE UE 1 3 ES OO VMI ee 1 3 1 27 e Tee e TU TEE 1 4 E Salcly 13 d de Sene 1 5 1 ANN WaN Ay EE EEE NE EE 1 8 ES COCOM e 1 9 DENE Rn wi Ta te H 2 11 2 1 ENEE 2 13 7 ES EN mmmm m 2 13 RI Oe DES PT seende 3 1 3 1 BIOCK DAT Need 3 3 3 2 NNN 3 3 3 3 FN Capability ee 3 4 J Phase UN ON 3 5 39 9111211 SOUS NING acca isc sewers EEE nes einen 3 6 36 Fron Panel 8 5 1 E 3 6 SIO COMMCCIONS EEE a Laad 3 6 32602 EE 3 7 ITALE i esata rete qatar 4 1 4 1 Unpacking and Inspection isi a taak dates taani kasinad n si ein sea lii nnna 4 3 42 Working Conditions rose misasi v ita aadlik av dansk galal 4 4 AS TOR E UU o E EEEE ep a ET 4 4 4 4 Wall Mounting E ODUOM nnmnnn 4 5 4 5 Rack Mounting Option eesnvernnnnvevnnnnnennnnnnnnnnnnennnnnvennnnvennnnnnnnnnnvennnnnennnnnnennnnnnennnnnnen 4 6 4910 19 MO le Le DE 4 6 JoL FA NW 4 6 26 Oe Tee EE NE ka aa aiva 4 7 AOT POT SA E 4 7
3. S E Spontaneous send of the TOD message is enabled The TOD message is sent each second The TOD command is not active in this case Answer none OSA 4531 E1 User Manual Revision August 2009 6 23 Local Management WTR lt cr gt lt lf gt Description Type Parameter Answer Return the value of the wait to restore time and the remaining WTR time for both GPS and AUX input Request none WTR www gggg aaaa lt cr gt lt If gt lt etx gt www Set Wait to restore Time In 10s of seconds 3 ASCII characters with possible spaces at left O lt w lt 250 Default value 6 60 s gggg Remaining time for WTR on GPS input in seconds In normal operation gggg 10 www 4 ASCII characters with possible spaces at left 0 lt gggg lt 2500 aaaa Remaining time for WTR on AUX input in seconds In normal operation aaaa 10 www 4 ASCII characters with possible spaces at left 0 lt aaaa lt 2500 WTR w lt cr gt lt lf gt Description Type Parameter Answer Set a new value for the wait to restore time In 10s of seconds The value can be between 0 and 2500 seconds It means that to enter the value 2000 seconds for WTR the user have to write 200 as w parameter Entry w New value for the WTR functionality 0 lt w lt 250 none OSA 4531 E1 User Manual Revision I August 2009 6 24 E Specifications Chapter 7 Specifications Including Input Specifications Tracking
4. e Totally maintenance free design The OSA4531 E1 is manageable locally via Local Manager software and remotely via the renowned Oscilloquartz SyncView synchronization network management system This allows to combine in the same network the OSA with other Oscilloquartz synchronization OSA 4531 E1 User Manual Revision August 2009 2 13 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 General Description 2 14 Chapter 3 Equipment Description Including Block Diagram a Input Selection e Holdover Capability Phase Build Out Output Squelching Front Panel Layout OSA 4531 E1 User Manual Revision I August 2009 Equipment Description 3 1 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 Equipment Description 3 2 Equipment Description 3 1 Block Diagram 4531 GPS SB Block Diagram Internal A communication Micro Controller GPS engine Tracking System gt Frequency amp 4 or 2 048MHz gt Auxiliary input OCXO 8663 Time Code Frequency Output Figure 3 1 Block Diagram 3 2 Input Selection The user has the possibility to configure the input selection process of the OSA 4531 E1 GPS SB by choosing from a table listing the priority of each input For exa
5. SUB D 9 pole socket Figure 6 1 RS 232 Connection OSA 4531 E1 User Manual Revision August 2009 6 3 Local Management 6 3 RS 232 Port Configuration e Baud rate 9600 or 4800 e Data bits 8 e Stop bits 2 9600 baud 1 4800 baud e Parity None e Handshake None e The format for sending commands is ASCII terminating by lt CR gt lt LF gt e The format of the receiving commands is ASCII terminating by lt CR gt lt LP gt at the end of each line The end of message is terminating by lt CR gt lt LF gt lt ETX gt 1 4 6 7 8 9 OSA 4531 E1 User Manual Revision I August 2009 6 4 E Local Management 6 4 Command List Command Type Description Parameters ADM STATE Request Return the administrative state of both GPS and AUX inputs ADM STATE ga Entry Set the administration state of GPS and g GPS input AUX inputs a AUX input 0 gt Input Disabled 1 Input Enabled AL Kess Return the current alarm mask lv ei gawhfoi Entry Set the alarm mask g GPS alarm a Antenna alarm w Init or Warm up alarm h Holdover alarm f Tracking Fast alarm o OCXO alarm i AUX input alarm 0 al mask disabled 1 al mask enabled AUX_INPUT Return the configuration of the auxiliary input AUX INPUT ct Entry Configure the auxiliary input c 0 Frequency c 1 Code E1 t 0 Code HDB3 t 1 Code AMI yi RATE Return the current baud rate KI neice b Entry Set the baud rate b 4800 4800 Baud b
6. level frequency impedance Connect the outputs to the equipment that needs synchronization in accordance with the user s network plan and or wiring schedules M Note kaa For balanced output type G703 10 8 G703 6 an adapter 75 gt 120Q is furnished with the accessories of the OSA 4531 E1 GPS SB 4 9 Alarm Output Connection This electrical alarm is issued from relay isolated contacts and is available on the ALARM connector Absolute maximum ratings U 150Vpc or 125Vac 1A The alarm output works in Normally Closed or Normally Opened mode depending of the wiring In Normally Closed mode the relay contacts are closed when there is an alarm condition or when the OSA 4531 E1 GPS SB is switched off while it is open in Normally opened mode Normally Closed wiring Normally Opened wiring E lt 10MHZ E1 2 SNE 1PPS AUX IN ANT IN E lt 10MHZ E1 2 bebe 1PPS AUX IN ANT IN L L Figure 4 7 Alarm Output Connection OSA 4531 E1 User Manual Revision l August2009 z7 Installation 4 10 Start Up 4 10 1 Operation Modes Depending of the conditions the module can work in one the following modes Initialization After a power up the initialization mode assures the configuration of the system The typical time to perform the configuration of the system is up to 10 seconds Warm up In this mode the system is waiting for the GPS initialization Satellites acquisition tracking algorithm
7. 10 5 2 11 5 2 12 5 2 13 5 2 14 Configuring the Unit Working Mode The OSA 4531 E1 GPS SB could be set in AUTOMATIC working mode default or in HOLDOVER mode e In AUTOMATIC working mode the OCXO is tracked while GPS or AUX references are available e In HOLDOVER working mode the OCXO works in free run mode even if GPS and or AUX references are available Alarm Mask some alarm conditions could be masked it means that the corresponding alarm condition will not be shown by the system As default value all alarm conditions are unmasked Output Type The BNC connector E1 2 048MHz is used as output for both E1 code or 2 048MHz default The type of output signal can be selected by software Baud Rate The RS 232 serial communication port can work at 9600 baud default or 4800 baud The baud rate is selected by software 4800 baud is used to be compatible with NMEA 0183 standards Time Of Day Function The OSA 4531 E1 GPS SB can send automatically on RS 232 port the Time amp Date string regarding NMEA 0183 command ZDA This function can be enabled or disabled default by software OSA 4531 E1 User Manual Revision August 2009 5 5 Configuring the Unit 5 3 Default Factory Settings 5 3 1 Generic Settings AUX input Frequency code setting HDB3 Loop Time Constant 2000 Offset for Local Time 0 Cable Delay 0 1PPS User Offset 0 Adm state GPS and AUX enable Priority table GPS high AUX low Wait to
8. 9600 9600 Baud CLEAR WTR GPS Clear the current WTR timer for GPS nm input CLEAR WTR AUX Request Clear the current WTR timer for AUX input ou Return the current KERE sanse E DEFAULT Return the setting parameters Grus OFFSET shh mm _ Entry enl the offset between local and GMT S Of time 00 lt hh lt 23 00 lt mm lt 59 OSA 4531 E1 User Manual Revision I August 2009 OSA 4531 E1 User Manual Revision l August 2009 GP 6 a Local Management HBSQ Return the current value of HBSQ SS HBSQ h mudil Set the HBSQ a a lt h lt 7200 INFO_CHAN w Return hele status about the 8 channel receiver INFO_GPS Request Return geographical information provided by the GPS receiver INFO VIS SAT Request Return information about the status of the visible satellites 1 line per satellite o i MODE m Entry Set the working mode m HOLDOVER m AUTOMATIC OUTPUT TYPE Request Return the set output signal Frequency or E1 code OUTPUT TYPE oo Entry Set the output signal Frequency or E1 oo FR frequency code oo E1 E1 code PPS CABLE DELAY d Entry Set the propagation s delay of the O lt d lt 999999 antenna cable in nano sec PPS USER OFFSET o Set the user 1PPS offset in nano sec 0 lt 0 lt 999999999 PRIOR TABLE Return the current priority table M PRIOR TABLE p1p2 Entry Set the priority table p prionty of GPS input p2 priority of AUX input 1 15 priority 2 29 priority R
9. Remaining time for WTR on AUX input in seconds In normal operation aaaa 10 www 4 ASCII characters with possible spaces at left 0 lt aaaa lt 2500 OSA 4531 E1 User Manual Revision August 2009 6 13 po Local Management DEFAULT PARAMETERS lt cr gt lt If gt Description Return the default parameters Factory settings of the GPS SB module It is just a printout of the values no action will be taken on the current settings Type Request Parameters None Answer DEF CONF TAU tttttMODE mGMT OFFSET shhmmPPS CABLE DELAY ddddddPPS OF FSET 000000000HBSQ hhhhWTR wwwAUX ct lt cr gt lt lf gt lt etx gt TAU ttttt User Loop Time Constant 5 ASCII characters with possible spaces at left 100 lt t lt 50000 MODE m User working mode 9 ASCII characters with possible space at the right of the string m AUTOMATIC or HOLDOVER GMT OFFSET shhmm Offset between local and GMT UTC time If the offset is zero the time will be GMT UTC time With offset other than zero the time will be a local time 5 ASCII characters S Sign of the offset OF hh Offset in hoursO lt hh lt 23 mm Offset in minutes 0 lt mm lt 59 PPS CABLE DELAY dddddd Negative offset of the 1PPS signal to compensate the delay of pro pagation in the cable between the antenna and the module In nano seconds 6 ASCII characters with possible spaces at left 0 lt d lt 999999 PPS OFFSET 000000000 Positive user offset of the 1
10. Subsystem Characteristics Output Specifications Remote Functions General Specifications OSA 4531 E1 User Manual Revision I August 2009 7 1 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 Specifications 7 2 Specifications 7 1 Input Specifications AUXILIARY INPUT 2 048 Mbps Mode Specifications Input 2 048 Mbps G 703 6 HDB3 or AMI coded either CRC4 or CAS e 75Q 1202 via TEX P or impedance adapter not included Input Qualification Detection of the following criteria causes input changeover Loss of Signal LOS Alarm Indication Signal AIS Frame Alignment error LFA Excessive error rate 2153 on frame alignement ER Frequency Mode Specification Input 0 064 1 1 544 2 048 G 703 10 5 or 10 MHz Automatic detection of input frequency and division Sine wave input level 0 15 to 1 5 Vrms Square wave input level 0 5 to 5 Vpp 75Q 12008 via external impedance adapter not included Input Qualification Detection of the following criteria causes input changeover Loss of Signal LOS Frequency Out Of Limit OOL INPUT MANAGEMENT Input Selection Input Validation Input validation criteria depend on input signal type See paragraph on Input Characteristics Max Output Phase Change after Phase build out function cancels phase offsets between Input Changeover inputs Output phase change typically lt 10 ns exact valu
11. granted by this document Except as provided in Oscilloquartz SA s Terms and Conditions of Sale for such products This document is exclusive property of Oscilloquartz SA and may not in whole or in part be copied photocopied reproduced modified translated reduced to any electronic medium or machine readable stored in a retrieval system or transmitted in any form without prior consent in writing from Oscilloquartz SA Br vards 16 2002 Neuchatel 2 Switzerland Every effort has been made to ensure the accuracy of this guide However Oscilloquartz SA makes no warranties with respect to this documentation and disclaims any implied warranties of merchantability and fitness for a particular purpose Oscilloquartz SA shall not be liable for any errors or for incidental or consequential damages in connection with the furnishing performance or use of this manual or the examples herein Oscilloquartz SA may make changes to specifications and product descriptions at any time without notice OSA 4531 E1 User Manual Revision I August 2009 1 3 Introduction 1 2 Reading Guide Special icons attracting your attention precede important and or critical information in this document Hereafter are explanations of each icon AN GAUTION This symbol is extremely important and must not be neglected It precedes information or procedures regarding installation operation or maintenance Follow all steps or procedures as instructed to
12. gt lt lf gt Si 1 line per satellite max 12 ID iiIDOP dddddAZIM aaaELEV eeST AT s lt cr gt lt lf gt lt etx gt nn Number of visible satellites 0 lt nn lt 12 li Satellite identifier 0 lt ii lt 32 ddddd Doppler frequency 5000 lt ddddd lt 5000 Hz aaa Azimuth in degrees 0 lt aaa lt 359 ee Elevation in degrees 0 lt ee lt 90 S Satellite status 0 Healthy and not removed 1 Healthy and removed 2 Unhealthy and not removed 3 Unhealthy and removed INV lt cr gt lt lf gt Description Returns the inventory information of the GPS SB module Type Request Parameter None Answer INV ModuleNameArticleNumberCommercialNumberSerialNumber LayoutVersionFirmwareVersionDateOfTestReserveTestSoftwareVersion OcxoType lt cr gt lt If gt lt etx gt ModuleName 12 ASCII characters Example 4531 E1 E1 12V ArticleNumber 12 ASCII characters Example 9454531 E150100 CommercialNumber 6 ASCII characters Example 013067 SerialNumber 5 ASCII characters Example 00100 LayoutVersion 2 ASCII characters Example 03 Firmware Version 4 ASCII characters Example 0100 DateOf Test 8 ASCII characters Example 28012002 Reserve 8 ASCII characters 8 x space character TestSoftware Version 4 ASCII characters Example 0100 Ocxo Type 10 ASCII characters Example 8663 B6SG OSA 4531 E1 User Manual Revision August 2009 6 18 E e Local Management MODEzmcr gt lt If gt Description Set a user working mode Allows the user to
13. perform any servicing or modifications other than what is recommended in this User Manual Do not attempt to gain access to areas of the unit where dangerous voltages are present Refer servicing to qualified service personnel A DAMAGE REQUIRING SERVICE e Refer servicing to qualified service personnel under the following conditions e When the power supply cord is damaged e If liquid has been spilled into the enclosure of the unit e If the product does not function normally by following the instructions in the User s Manual Adjust only those controls that are covered by the operating instructions Improper adjustment of other controls may result in damage and will often require rework by a qualified technician to restore the product to its normal operation e If the product has been damaged in any way When the unit displays a negative distinct change in performance OSA 4531 E1 User Manual Revision I August 2009 1 7 Introduction 1 4 Warranty This Oscilloquartz product carries a warranty which commences from date of dispatch from factory Unless agreed otherwise or stipulated differently on the original acknowledgement of order the duration of the warranty is twenty four months It applies to demonstrably faulty material or poor workmanship but excludes batteries Oscilloquartz shall bear only the cost of repair or replacement in its own premises Should this not be possible for reasons beyond our control all additio
14. restore Time 60 HBSQ 0 disable Working mode AUTOMATIC Alarm mask none Output type Frequency 2 048MHz Baud Rate 9600 Time Of Day off Table 5 1 Generic Factory Settings 9 3 2 Setting for Article A014494 945 453 180 060 AUX input Disabled Loop Time Constant 2000 Offset for Local Time 0 Cable Delay 0 1PPS User Offset 0 Adm state GPS and AUX enable Priority table GPS high AUX low Wait to restore Time 60 HBSQ 6 Working mode AUTOMATIC Alarm mask none Output type Frequency 2 048MHz Baud Rate 9600 Time Of Day off Table 5 2 Factory Settings for Article A014494 OSA 4531 E1 User Manual Revision I August 2009 5 6 E Chapter 6 Local Management Including Overview RS 232 Port Connection RS 232 Port Configuration Command List a Command Description OSA 4531 E1 User Manual Revision I August 2009 Local Management 6 1 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 Local Management 6 2 Local Management 6 1 Overview The OSA 4531 E1 GPS SB can be locally managed via the RS 232 port on the connector panel using an IBM compatible PC loaded with the Communication and Monitoring Software or a Terminal software 6 2 RS 232 Port Connection 10MHzZ E1 2 048MHz IPPS AUX IN ANT IN 9 18V Ce 20 D I DC 1 4A Connector SUB D 9 pole plug Connector
15. 4 7 GPS Antenna and Auxiliary Input Connections sssxrrnnnnnvnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnner 4 9 4 7 1 Auxiliary Input Connection rranrrvnrnnrvvnnnrevrnnnrvnnnnrernnnnrennnerernnnerennnrennnnsnen 4 9 Sege Me eege 4 10 4 9 Alarm Output Connection rannnvnnnnennnnnnnnnnennnnnnnnnennnnnnnnnnennnnnnnnnennnnnnnnnnennnnernnnnennn 4 11 210 SUD n Ee AS AAA astal kai aa 4 12 4101 Operation lge Seege mit kun and aitas eegen 4 12 OSA 4531 E1 User Manual Revision I August 2009 V E Contents 2102 FJ e DE 4 14 Be CONFIGURING THE UNIT sv mme EA 5 1 5 1 OA AAA 5 3 S2 SOR STUN CG 5 3 Diet PAUSINI IN UN EEE 5 3 32 OO MM Hin E se EEE EE M mat n 5 3 dDE ELEN 5 3 579744 EDEN 5 3 AE OG EEE EE 5 4 525 RENE EE 5 4 BET ne 5 4 528 Walit Re elen 5 4 5 2 9 Conditional SGouelch nn nnenennnane nn nane ann nnnea 5 4 5 2 10 Working Mode 5 5 BE AAN 5 5 Sae 8911501 Ee 5 5 509220 6 Ee RE 5 5 5 2 14 Time Of Day E 0165 1701 DEE 5 5 5 3 Default Factory EE lu e E 5 6 E el GN de 5 6 5 3 2 Setting for Article A014494 945 453 150 060 rrrerrnrrrvnnnrerrnnrrvnnnrrennnnnen 5 6 6 LOCAL MANAGEMENT geegent edd 6 1 6 1 VON VIGEN HAAA t 6 3 62 AS 232 FOE DRECHEN EE SEENEN 6 3 63 R5 232 EorttonHoutatgt eenegen ed 6 4 04 mmand RE 6 5 6 5 Command Descriptions snrrrnnnnvennnnnnnnnnnnnnnnnuennnnnevnnnnvennnnnnnnnnnnennnnnnennnnnennnnnvennnnnnen 6 8 EE 3 119 PANAMA AAA ma a 7 1 7 1 MA SSC INC AU ONS Harr 7 3 7 2 Trackin
16. 42 089 035 and connect it to the OSA 4531 E1 GPS SB as described below M Note For balanced input type G703 10 amp G703 6 an adapter 120 gt 75Q is furnished with the accessories of the OSA 4531 E1 GPS SB OSA 4531 E1 User Manual Revision I August 2009 4 9 Installation 4 7 1 1 Timing Extractor Passive TEX P Signal from unterminated E1 link can be connected to the OSA 4531 E1 GPS SB using an external TEX P The TEX P is a passive in line device normally mounted externally to the equipment It is used to couple the E1 link to the equipment The device works as a sort of a Sniffer which taps off a portion of the digital signal without interfering with traffic or degrading the link in any way The TEX P handles up to two separate E1 feeds OSA TEX P 2 048Mbit s feed i with traffic Switch OSA 4531 GPS SB Figure 4 5 TEX P Connection to OSA 4531 E1 4 8 Output Connection These need to be connected in accordance with the user s network plan and or wiring schedules 2 048 Mbps Output G 703 6 752 or 2 048 MHz Output G 703 10 75Q 10 MHz Output 1PPS Output 1Vams 50Q EE 2 4Vpp 50Q 10MHz E1 2 048MHz 1PPS AUX IN ANT IN gen Za Le DC 1 4 Figure 4 6 Output Connection OSA 4531 E1 User Manual Revision I August 2009 4 10 Installation K Recommendation Check that the required output signals are compatible with the outputs available on the OSA 4531 GPS SB shape
17. Connector Access Table 7 5 General Specifications OSA 4531 E1 User Manual Revision I August 2009 Single power supply converter 9 to 18VDC 945 453 1S0 100 18 to 60VDC 945 453 150 000 Warm up lt 12W Steady state lt 8W Storage as specified in ETS 300 019 1 1 class 1 1 Transportation as specified in ETS 300 019 1 2 class 2 2 Operation as specifies in ETS 300 019 1 3 class 3 2 5 to 55 C 40 to 85 C 5 to 95 non condensing Certified to EN50081 1 and EN50082 1 Susceptibility to IEC 801 parts 2 3 4 5 and 6 Conformance to EN61010 1 5 x4 x2 standard case 147 x 101 x 50 25 including connectors 4009 Front access F Maintenance Chapter 8 Maintenance Including Overview Oscilloquartz Contact Information OSA 4531 E1 User Manual Revision I August 2009 8 1 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 Maintenance 8 2 Maintenance 8 1 Overview No periodic maintenance is required for this unit 8 2 Oscilloquartz Contact Information 8 2 1 Technical Assistance For technical assistance contact the following 8 2 1 1 International Oscilloquartz SA Customer Support amp Services 16 Rue de Br vards 2002 Neuch tel 2 SWITZERLAND Tel 41 32 722 5555 Fax 41 32 722 5578 e mail css oscilloguartz com 8 2 1 2 North America Oscilloquartz USA Customer Support amp Services 14 Invernes
18. PPS signal In nano seconds 9 ASCII characters with possible spaces at left 0 lt o lt 999999999 WTR www Set Wait to restore Time In 10s of seconds 3 ASCII characters with possible spaces at left 0 lt w lt 250 AUX c type of Auxiliary input c 0 frequency c 1 E1 code t type of E1 code t 0 HDB3 t 1 AMI OSA 4531 E1 User Manual Revision I August 2009 6 14 Local Management GMT OFFSET shh mm lt cr gt lt If gt Description Set anew value for the offset between local and GMT UTC time If the offset is zero the time given by the module will be the GMT UTG time For an offset other than zero the time information will be a local time Type Entry Parameters s Sign of the offset Or hh Offset in hours00 lt hh lt 23 mm Offset in minutes 00 lt mm lt 59 Answer None HBSQ lt cr gt lt lf gt Description Return the current value for the delay in holdover mode before the outputs will be squelched In minutes Type Request Parameter None Answer HBSQ hhhh rrrr lt cr gt lt lf gt lt etx gt hhhh current HBSQ value in minutes 4 ASCII characters with possible spaces at left O lt h lt 7200 rrrr remaining time of HBSQ function in minutes In normal operation this value is equal to the HBSQ one 4 ASCII Characters with possible spaces at left Default value 0 HBSQ function disabled HBSQ h lt cr gt lt lf gt lt etx gt Description Type Parameter Answer Set a new val
19. S 4531 E1 regenerates the selected reference and attenuates jitter and wander on this reference The time constant of the loop is programmable in the range of 100 to 50 000 seconds 2 000s default When no valid input reference is available the GPS 4531 E1 enters hold over mode and holds its output frequency to the one that was available just before the loss of the input 2 2 Functions The OSA 4531 E1 GPS SB GPS Synchronization Box is an Oscilloquartz GPS receiver with holdover capability together with G 703 auxiliary input When locked to GPS the OSA 4531 E1 GPS SB fulfils the ITU T rec G 811 The OSA 4531 E1 GPS SB performs the following e Supplies ITU T G 811 references with valid GPS signal e Accepts one back up synchronization reference input e Monitors the status of the reference input signals GPS and auxiliary synchronization signal e Selects the highest priority operator specified synchronization input e Selects the next available synchronization input in the priority table if the current synchronization input has failed e Automatic switching without phase jump e Attenuates jitter and wander on the selected synchronization input e Operates as a standby reference clock in hold over mode if all synchronization inputs have decreased in quality or failed e Communicates by a serial port RS 232 with IBM compatible PC for alarm reporting and equipment control In addition the OSA 4531 E1 GPS SB also features
20. UENCY OUTPUTS 2 048 MHz Output G703 10 Specifications 2 048 Mbps Output G703 6 Specifications 10 MHz Output G703 10 Specifications 1PPS Output Specifications Table 7 3 Output Specifications 7 4 Remote Functions MONITORING amp ALARMS User Interface Protocol Communications Parameters Electrical Outputs Specifications Level G 703 10 Square wave Impedance 75Q e Connector BNC Level G 703 6 Impedance 75Q Connector BNC Code E1 Multiframe CRC4 Level 1 0 Vous 20 Sine wave Impedance 50Q Connector BNC Level 2 4 Vpp 20 AC MOS 50Q Square wave Pulse Width 200ms Rise Time lt 20ns Impedance 50Q e Connector BNC RS 232 on 9 way D type connector TTY 4800 baud 8 data bits 1 stop bit parity none 9600 baud 8 data bits 2 stop bits parity none Factory setting 1 relay contact IMAX 1A VMax 150Vpc Or 125Vac Contacts available from a 3 ways type weidm ller connector Normally Open or Normally Closed function selected by wiring Table 7 4 Remote Functions Specifications OSA 4531 E1 User Manual Revision I August 2009 7 5 Specifications 7 5 General Specifications POWER SUPPLY Configuration Input Voltage Power Consumption ENVIRONMENTAL Environment Operating Temperature Range Storage Temperature Humidity EMC ESD amp SAFETY CE Mark EMC amp ESD Safety MECHANICAL Mounting Size D x WxH mm Weight
21. ach module contains semiconductor devices that can be damaged by electrostatic discharges It is advisable to take anti static precautions when handling electronic boards or static sensitive components Use an approved anti static bracelet in accordance with company practice AN WATER AND MOISTURE Do not place containers with liguids such as coffee water sodas etc on this unit Do not operate this eguipment in a wet environment AN HEATING Do not install this product near heat sources such as radiators air ducts areas subject to direct intense sunlight or other products that produce heat OSA 4531 E1 User Manual Revision I August 2009 1 5 Introduction AN VENTILATION Slots and openings in the unit are provided for ventilation and to ensure reliable operation of the product To protect the unit from overheating those openings must not be blocked or covered AN GROUNDING EARTH CONNECTION IS ESSENTIAL BEFORE CONNECTING TO THE SUPPLY The OSA 4531 E1 must be connected to Earth Ground common bounding network DC C The wire used for the connection must be a minimum of AWG16 Ensure that all other devices connected to the 4531 E1 are connected to protective earth ground Grounding one conductor of a two conductor outlet is not sufficient Any interruption of the protective grounding conductor inside the eguipment or disconnecting the protective earth terminal is likely to make this eguipment dangerous I
22. anne nnt 4 8 Figure 4 4 ale CONS CH ONS EEE m 4 9 Figure 4 5 TEX P Connection to OSA Abh21 EI 4 10 Figure 4 6 Output Connection i senavavavk msitvinti jurta elaksid kaval ikka malakat na v ita katla aata a 4 10 Figure 4 7 Alarm Output Connechon nene nnnnne nene n vana nene nna name 4 11 Figure 4 8 State uagram areren 4 13 Foure 61115 25210 age 0 EE EE EE EE 6 3 OSA 4531 E1 User Manual Revision August 2009 vili S List of Tables List of Tables Table 3 1 Connector Descrpton nene nenennnana nen nnana nene 3 6 Table 3 2 Operational State wisicsciussiccsssinsedsesrdssnscsassadenondsnesusccprdsaardsenneaassndunnesieeduecuaensvunndusaebanneeaets 3 7 Table 5 1 Generic Factory Gettnge avane nnnnennnanennene naene nene 5 6 Table 5 2 Factory Settings for Article AOT 4404 5 6 Tape AR COT EE EEE 6 7 Table 11 ul lte lee E 7 3 Table 7 2 Tracking SubSystem Characherteice anne enne enese annan 7 4 Table 7 3 free le ere 7 5 Table 7 4 Remote Functions Specifications ccccccccceecccseeceeeeceeceeeeseeeseneeseeesneeteueeseeetaneegeeess 7 5 Table 7 5 General SOC ele EE 7 6 Table 9 1 NE A 1 Table 8 2 Ordering Miscellaneous Acceseortes nae nae nan na annan nene A 1 OSA 4531 E1 User Manual Revision August 2009 IX q List of Procedures List of Procedures Procedure 4 1 Power Up 4 7 OSA 4531 E1 User Manual Revision I August 2009 X Chapter 1 Introduction Including About this Manual Readi
23. ar A014637 942 089 919 screws and screw cages RS 232 cable Null Modem Cable A012740 957 520 901 120 75 ohms Balun EN A005318 938 752 011 Table 8 2 Ordering Miscellaneous Accessories OSA 4531 E1 User Manual Revision August 2009 A 1 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 Ordering Information A 2 r Glossary Glossary Digital Phase Lock Loop i Oscillator Output Frequency EN Cut off Frequency Jitter Short term non cumulative variations of the significant instants of a digital signal form their ideal positions in time expressed in seconds or in Ul unit interval Loop Time Constant Wander Long term non cumulative variations of the significant instants of a digital signal form their ideal positions in time expressed in seconds or in Ul unit interval a Offset of phase time between two signals in function of time expressed in seconds KI Crystal Oscillator EI Phase time difference at the input of the digital PLL filter PI controller Fractional frequency offset normalized instantaneous offset from a reference in function of time OSA 4531 User Manual Revision I August 2009 This page has been intentionally left blank OSA 4531 User Manual Revision I August 2009 Glossary Document History Document Histor Project N l 945 453 150 x00 Document Type User Manual Version English Author OSA COJE CHAL R
24. avoid any damage to eguipment or serious personal injury AN ELECTRICAL SHOCK HARZARD This warning symbol is extremely important and must not be neglected It indicates that there are dangerous high voltages present inside the enclosure of this product and precedes important warnings to avoid any risk of fire or electrical shock that could lead to serious personal injury or loss of life Ad ESD CAUTION Electrostatic Discharge ESD must be avoided so as not to damage or destroy static sensitive components yf Note A note symbol informs the reader that additional information on the related subject is provided in order to simplify a described task suggest other references or even just simplify an explanation NN Recommendation Recommendations advise the user on manufacturer tested methods and procedures proven valuable for correct use and optimum eguipment results OSA 4531 E1 User Manual Revision I August200 TA Introduction 1 3 Safety Instructions IMPORTANT SAFETY INSTRUCTIONS DO NOT DISCARD READ BEFORE OPERATING AN GENERAL Exercise extreme care when handling any electronics eguipment as it contains precision parts that can be damaged by improper handling Avoid touching connector pin surfaces Foreign matter deposited on contact surfaces can cause corrosion and eventually lead to degradation of performance In addition do not use abrasives to clean contact pin surfaces LA ESD CONSIDERATION E
25. be used This is performed by the Priority Table command The objective is to enter a priority level for each input default value GPS has the highest priority The input selection process is reversible according to the following definition e If the input with the highest priority failed the system selects the input with the second level of priority e lf the input with the highest priority becomes valid again the system will return on this input as reference In other words the selection process of a new input is always checking if a higher priority is available 5 2 8 Wait To Restore Time The wait to restore time ensures that a previously failed synchronization source is only again considered as available by the selection process if it is fault free for a certain time This functionality avoids frequent commutations in case of non stable references The default value is 60s In the low level commands this parameter is called WTR Wait To Resiore 5 2 9 Conditional Squelch The conditional squelch allows the system to disable all the outputs frequency code and 1PPS after a certain time in HOLDOVER mode It means that the outputs are considered as poor quality ageing of the OCXO If the delay is set to 0 the functionality is disabled default and the outputs stay always active In the low level commands this parameter is called HBSQ Holdover Before Squelch OSA 4531 E1 User Manual Revision I August 2009 5 4 5 2
26. changes reference it will go into holdover for a short period of time approx 2s in order to provide a constant synchronization signal to the output units Even though the two synchronization sources GPS and Auxiliary have the same frequency they can still vary in phase The result would be that the synchronization output would be affected by jump in phase as shown in the figure dotted line In the OSA 4531 E1 GPS SB Oscilloquartz has eliminated this phase jump by adjusting the phase of the new reference signal during an extended holdover period additional 20s During this period the element calculates a phase build out constant that is used to align the phase of the reference with the phase of the internal holdover oscillator Hence the elements avoid getting a phase jump on the outputs when switching from the internal holdover to the reference signal Phase Buildout Phase 0 Syne lp 2 sera ee Phase buildout Ag N 20s Output w o 2S phase buildout Output w Provided by internal oscillator phase buildout Time s Figure 3 3 Schematic Presentation of the Phase Build Out OSA 4531 E1 User Manual Revision August 2009 3 5 Equipment Description 3 5 Output Squelching The OSA 4531 E1 GPS SB supports conditional squelching where the operator can set the condition under which the outputs are squelched after a configurable delay after entering holdover mode 3 6 Front Panel Layout
27. compliant to e EMC EN50081 1 EN50082 1 EN61000 6 2 e SAFETY EN60950 A variety of Oscilloquartz products are certified world wide For details please refer to our web site at www oscilloquartz com COMPANY CERTIFICATION e Certified since 1998 by the Swiss Accreditation Service and Swiss Federal Office of Metrology as an accredited laboratory for time and frequency e Certified ISO 9001 since 1994 and ISO 14001 since 2000 by The Swiss Association for Quality and Management Systems SQS OSA 4531 E1 User Manual Revision I August 2009 1 9 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 Introduction Chapter 2 General Description Including Overview Functions OSA 4531 E1 User Manual Revision I August 2009 General Description This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 General Description General Description 2 1 Overview The OSA 4531 E1 GPS SB is a GPS receiver which provides an accurate frequency derived from the Coarse Acquisition Link 1 signals transmitted by the Navstar Global Positioning System GPS satellites In addition the GPS 4531 E1 module is equipped with an auxiliary input which accepts either frequency or E1 code Depending of the configuration of the module the GPS or the auxiliary input can be used as the reference for the tracking function When locked the GP
28. d at 200s whatever the user value is As soon as the system goes in NORMAL TRACKED mode the user loop time constant will be used Time Zone By default the OSA 4531 E1 GPS SB gives the GMT or UTC time The module is able to provide a local time by adding or subtracting an offset in hours and minutes Cable Delay The 4531 E1 GPS SB is able to compensate the propagation delay in the cable between the antenna and the receiver The value has to be entered in nanosecond The total delay depends of the specification of the used cable The default value is Ons When using an inline Amplifier a delay of 10ns has to be added OSA 4531 E1 User Manual Revision August 2009 5 3 Configuring the Unit 5 2 5 User Offset This functionality allows the user to offset the 1PPS in one nanosecond increments This offset can be used to place the time mark anywhere within the one second epoch The default value is Ons The user offset has a positive effect in the time domain whereas the cable delay has a negative effect 5 2 6 Administrative State The administrative state allows the user to disable a specific reference input This functionality is very useful if an input is not used to avoid the generation of an alarm Either the GPS or the AUX inputs can be set in the enabled default or in the disabled state 5 2 7 Priorities If both GPS and Aux inputs are available the OSA 4531 E1 GPS SB needs to know which reference has to
29. e depends on environmental conditions Table 7 1 Input Specifications OSA 4531 E1 User Manual Revision I August 2009 7 3 E Specifications 7 2 Tracking Subsystem Characteristics TRACKING SUBSYSTEM Type GPS Receiver Module GPS incorporating Digital Phase Locked Loop DPLL Jitter amp Wander Filtering Exceeds ITU T G 812 Type I V and VI Characteristics with loop time constant of 2000s Filter bandwidth 20uHz t 50000s to 10mHz t 100s Settable by the management software Gain peaking lt 0 2 dB Loop Time Constant t Variable between 100 and 50000 seconds to optimise filtering characteristics programmable via RS 232 port Factory Setting 2000 s Noise Generation Better than G 812 type I V and VI Observation Period MTIE 0 1t09s 24 ns 9 to 400 s 8 7 ns 400 to 10000 s 160 ns Observation Period TDEV 0 1 to 25s 3 ns 25 to 100s 0 12 t ns 100 to 10000 s 12 ns OSCILLATOR inside GPS module Holdover Stability at 25 C lt 1x 10 day after 30 days of continuous operation Stability Versus Temperature 6 x 1019 peak peak 5 to 55 C Initial Frequency Offset lt 1 5x 101 at entry into hold over mode Short Term Stability Bw 1kHz lt 1 5x 1011 0 2 10S Pulling Range peak to peak gt 6x107 In service adjustments Not reguired Life time gt 15 years Table 7 2 Tracking SubSystem Characteristics OSA 4531 E1 User Manual Revision I August 2009 7 4 a 7 3 Output Specifications FREQ
30. earth The ground stud is an M3 screw Connection must be made with a suitable connector 2 Measure voltage and polarity of the external power source before connecting it to the power input of the OSA 4531 E1 GPS SB The voltage must be within the specified range 3 Allow for the GPS SB to warm up so that the internal oscillator can reach its operating temperature The minimum warm up time is 10 minutes 24 hours before full specification are obtained During this time no outputs are available Depends firmware version 4 Power Consumption 8 W typical 25 C steady state OSA 4531 E1 User Manual Revision I August 2009 4 7 Installation 10MHz 1 2 048MHz PPS AUX WM ANT IN CE F pr Signal Ground Stud M3 Power Supply Connector Figure 4 3 Power Supply Connection OSA 4531 E1 User Manual Revision August 2009 4 8 Installation 4 7 GPS Antenna and Auxiliary Input Connections Auxiliary Input Antenna Input AUX IN ANT IN RS 232 Figure 4 4 Input Connections 4 7 1 Auxiliary Input Connection K Recommendation Check that the incoming reference signals match the Auxiliary Input type shape level frequency impedance Connect the input line to the Auxiliary Input connector according to the wiring plan In the case where an input reference signal must be derived from a G 703 6 traffic carrying signal insert an OSA TEX P Passive Timing Extractor part no 9
31. equest The module is resetting and starting up again DEFAULT Request The module is resetting and starting up again with its default parameters Return the current status t Set a new value of the time constant eg lt t lt 50000 a jr Return a NMEA 0183 format message about Time Of Day W STATE Request Return the status of the spontaneous send of the TOD message OSA 4531 E1 User Manual Revision August 2009 OSA 4531 E1 User Manual Revision l August 2009 66 Local Management Description Parameters Commana STATE s Set the status of the spontaneous send s D disable polled of the TOD message mode s E enable TOD message sent each second Request Return the set WTR value and the current WTR timer value for both GPS and AUX input WTR w Entry Set the wait to restore time in 10s of O lt w lt 250 second Table 6 1 Command List In case of wrong command name or wrong missing parameters the module will return some error messages as described below ERROR UNKNOWN COMMAND means that the received command is unknown ERROR BAD PARAMETERS means that some received parameters are not compatible with the corresponding command OSA 4531 E1 User Manual Revision I August 2009 6 7 Local Management 6 5 Command Descriptions ADM_STATE lt cr gt lt lf gt Description Type Parameter Answer Return the administration state of both GPS and AUX input of the GPS SB modu
32. evision Last Up date l 11 08 2009 Creation l 19 02 2002 REVISION DATE CORRECTIONS 19 02 2002 Creation A a 07 01 2005 TT TET Change mistake information command B 05 07 2005 07 2005 Update in Local Management Commands in Local Management Commands EE 05 09 2005 Update GPS Installation instructions Update Factory Settings New nea layout Eom 09 2005 Update E1 input and output specifications E1 input and output specifications 08 12 2005 12 2005 Update Warm up outputs conditions Warm up outputs conditions 27 03 2006 Add section for rack mounting options Add Ordering Information Appendix Add Technical amp Sales Assistance links 10 10 2006 Change mistake drawing number ETSI mounting kit Update GPS Antenna installation and description 21 21 02 2008 2008 Extract GPS Antenna Installation Extract GPS Antenna Installation chapter je T 11 08 2209 SUB D connector description distinguish male or female OSA 4531 User Manual Revision I August 2009 II
33. force the Holdover mode for example to make some measurements concerning the OCXO specifications Type Entry Parameter m AUTOMATIC or m HOLDOVER Answer None OUTPUT TYPE lt cr gt lt If gt Description Return the type of the signal present on the E1 2 048MHz output connector The signal can be either frequency square wave 2 048MHz or E1 Code 2 048Mbps Type Request Parameter None Answer OUTPUT TYPE 00 lt cr gt lt lf gt lt etx gt oo FRoutput is frequency square wave 2 048MHz oo E1 output is E1 code 2 048Mbps Default value FR OUTPUT TYPE oo lt cr gt lt If gt Description Set the type of signal on the E1 2 048MHz output connector The signal can be either frequency square wave 2 048MHz or E1 Code 2 048Mbps Type Entry Parameter oo FR output is frequency square wave 2 048MHz oo E1 output is E1 code 2 048Mbps Answer None PPS CABLE DELAY d lt cr gt lt lf gt Description Set anew value to compensate the delay in the cable between the antenna and the GPS SB module It corresponds to a negative offset of the 1PPS signal regarding its initial position Type Entry Parameter d new value for cable delay in nanoseconds O lt d lt 999999 Answer None OSA 4531 E1 User Manual Revision August 2009 6 19 El Local Management PPS USER OFFSET 0 lt cr gt lt If gt Description Seta new value for the user 1PPS offset It corresponds to a positive delay of the 1PPS signal regard
34. g Overview User Settings Default Factory Settings OSA 4531 E1 User Manual Revision I August 2009 5 1 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 Configuring the Unit 5 2 9 1 9 2 9 2 1 5 2 2 5 2 3 5 2 4 Configuring the Unit Overview The configuration is performed by software using the serial RS 232 communication port through the graphical interface of the Configuration and Monitoring Software for the 453x GPS Receiver Family or by using low level commands described in later chapter User Settings Auxiliary Input The auxiliary input can be configured for frequency default with 64kHz 1 544MHz 2 048MHz 5MHz or 10MHz The OSA 4531 detects the frequency and automatically configures its dividers The OSA 4531 also accepts a 2 48 Mbit s E1 signal The code can be HDB3 default or AMI either CRC4 or CAS The user must configure this input for HDB3 or AMI Loop Time Constant The loop time constant defines the bandwidth of the filter in the tracking function The default value 2000s is the best one respecting the ITU G 812 type 1 recommendation Filtering and Generation and offers a G 811 quality when the GPS input is selected Higher value increases the quality of the filtering but also the sensitivity to the temperature changes since the OCXO is more free yf Note In the TRACKING FAST mode the loop time constant is fixe
35. g Subsystem Characteristics ennnnannnnnnannnnannnnnannnnannnanannnnnnnnna nan 7 4 7 3 e EH e E E d TE 7 5 7 4 Remote CNC ONS Area 7 5 75 General SPCCINCANONS esi itta sivut vu v ka da a aia aa aiaiai ka vai 7 6 DENN E ai a a saua sisusse 8 1 8 1 SVEN EEE EE EN MM 8 3 8 2 Oscilloquartz Contact Information anxrnnnnnvvnnnnnnnnnnnnennnnnnnnnnnnennnnnnennnnnennnnnnnnnnnnner 8 3 8 2 1 Technical Assistance 8 3 gt AA RE EN EN 8 4 APPENDIX A ORDERING INFORMATION ennnernnnnnennnnnnnnnnnevnnnnnennnnnnennnnnennnnnnennnnnnnnnnnnnnnnnnennnn A 1 OSA 4531 E1 User Manual Revision August 2009 Vi S Contents t DIE ERE EE NN EE E i DOCGUNENT 118 a JAA AA EE lll OSA 4531 E1 User Manual Revision August 2009 vii S List of Figures List of Figures Figure 3 1 BIOCK DIAGFAM saczcasanastecatinnecbantedaceupsienasenssesnesuntieneseuaanesdeanbesvvyannessivedndepnis oneneeseoaveovdeosantiees 3 3 Figure 3 2 Example of Filtering the GPS Synchronization Gong 3 4 Figure 3 3 Schematic Presentation of the Phase Build Out 3 5 Figure 3 4 Front Panel 9 18V Version r rarrevnarvonnnrnnrrnnnnrnanranvennavsnnnernnvsnnnnrannennavsnnnsnnnernnuenne 3 6 Figure 3 5 Front Panel 18 GOV Version 3 6 Figure 4 1 Wall Mounting Cotton 4 5 Figure 4 2 Rack Mounting Option rrnrenennnnnennneneennnene nn nnnnennnenennnanennnnane anname meenet 4 6 Figure 4 3 Power Supply Connechon
36. ing its initial position Type Entry Parameters o new value for 1PPS offset in nanoseconds 0 lt o lt 999999999 Answer None PRIOR_TABLE lt cr gt lt lf gt Description Return the priority table of the module As the GPS SB is able to use either GPS or AUX input as reference the priority table indicates which input has to be used in priority when both inputs are OK Type Request Parameters None Answer PRIOR_TABLE p1p2 lt cr gt lt lf gt lt etx gt p1 priority level of GPS input 1 lt pl lt 2 p2 priority level of AUX input 1 lt p2 lt 2 Default value 12 PRIOR TABLE p1p2 lt cr gt lt If gt Description Set the priority table of the module As the GPS SB is able to use either GPS or AUX input as reference the priority table indicates which input has to be used in priority when both inputs are OK Type Entry Parameters 1 priority level of GPS input 1 lt p1 lt 2 p2 priority level of AUX input 1 lt p2 lt 2 Answer None OSA 4531 E1 User Manual Revision August 2009 6 20 Local Management RESTART lt cr gt lt If gt Description Type Parameter Answer This command allows the user to reset and restart the module with current parameters Request none none SET DEFAULT lt cr gt lt lf gt Description This command allows the user to reset and restart the module with default parameters Type Request Parameter none Answer none STATUS lt cr gt lt lf gt Descripti
37. ites acquisition Holdover Input avaible Check None input avaible Delta_ f f Normal 3 5e 9 lt 8 6e 9 Tracked 7 600s elapsed Tracked Fast Long 3600s elapsed Figure 4 8 State Diagram OSA 4531 E1 User Manual Revision I August 2009 Tracked Fast 4 13 Installation 4 10 2 Power Up A few seconds after power up the status of the system must be e Green LED is blinking indicates that one or more unmasked alarm conditions are active on the module INIT WARM UP GPS AUX OCXO alarm conditions gt Ifthe red LED is blinking it indicates a connection problem between the module and the antenna antenna over current or undercurrent Antenna alarm condition has to be unmasked This indication could appear only a few minutes after power up even if the antenna is incorrectly connected After approximately 12 minutes e If both GPS and AUX references are unavailable or disabled red LED is on means that the module is in HOLDOVER mode e f GPS or AUX references are available green LED is blinking means that the module is operating in TRACKING FAST mode Depending of the status of the OCXO the TRACKING FAST mode duration can be either 10 minutes or 1 hour e Green LED is on Means that the module is working in NORMAL TRACKED mode OSA 4531 E1 User Manual Revision I August 2009 4 14 B S Configuring the Unit Chapter 5 Configuring the Unit Includin
38. le Each input can be Enabled or Disabled Request None ADM_STATE ga lt cr gt lt lf gt lt etx gt g Administrative state of GPS Input 0 gt Disabled 1 gt Enabled a Administrative state of Aux Input 0 gt Disabled 1 gt Enabled ADM_STATE ga lt cr gt lt lf gt Description Type Parameters Answer Set the administrative state of both GPS and AUX input of the GPS SB module An input in the DISABLED state is ignored by the selection process of the module This functionality is useful when an input is not used to avoid the generation of an alarm condition Entry g 0 Setthe GPS input in disabled state a 0 Set the AUX input in disabled state default Set the GPS input in enabled state Set the AUX input in enabled state default XN 1 1 None OSA 4531 E1 User Manual Revision I August 2009 6 8 Local Management AL MASK lt cr gt lt lf gt Return the current alarm mask Description Type Parameter Answer Request None AL MASK gawhfoi lt cr gt lt lf gt lt etx gt g GPS Input alarm mask a Antenna alarm mask w Initialization or Warm up mode alarm mask h Holdover mode alarm mask f Tracking Fast mode alarm mask o OCXO alarm mask I AUX Input alarm mask 0 alarm mask disabled default 1 alarm mask enabled AL MASK gawhfoi lt cr gt lt If gt Set the alarm mask When an alarm is masked alarm mask enabled the corresponding alarm criteria wi
39. ll be ignored by the system Description Type Parameters Answer Entry g a W h f O I GPS Input alarm mask Antenna alarm mask Initialization or Warm up mode alarm mask Holdover mode alarm mask Tracking Fast mode alarm mask OCXO alarm mask AUX Input alarm mask 0 alarm mask disabled 1 alarm mask enabled None OSA 4531 E1 User Manual Revision August 2009 6 9 Local Management AUX INPUT lt cr gt lt If gt Description Type Parameter Answer Return the configuration of the Auxiliary input Request None AUX INPUT ct lt cr gt lt If gt lt etx gt c 0 The Auxiliary input recognises frequency signal default c 1 The Auxiliary input recognises E1 code signal 0 Selects HDB3 coding default 1 Selects AMI coding AUX_INPUT ct lt cr gt lt lf gt Description Type Parameters Answer Configure the Auxiliary Input Either Frequency or E1 code can be selected with this command If E1 code is selected the second parameter selects the HDB3 or AMI coding Entry The Auxiliary input recognises frequency signal The Auxiliary input recognises E1 code signal Selects HDB3 coding Selects AMI coding O CH F et Il ll None BAUD RATE lt cr gt lt If gt Description Type Parameter Answer Return the current baud rate of the serial RS 232 port Request None BAUD RATE b lt cr gt lt lf gt lt etx gt b 9600 The baud
40. mode 9 ASCII characters with possible space at the right of the string mu AUTOMATIC or HOLDOVER mr Current working mode of the system 12 ASCII characters with possible space at the right of the string mr INIT or WARM UP or TRACKED FAST or TRACKED or HOLDOVER Default value AUTOMATIC GMT_OFFSET shhmm Offset between local and GMT UTC time If the offset is zero the time will be GMT UTC time With offset other than zero the time will be a local time 5 ASCII characters S Sign of the offset OF hh Offset in hours00 lt hh lt 23 mm Offset in minutes 00 lt mm lt 59 Default value 00 00 PPS CABLE DELAY dddddd Negative offset of the 1PPS signal to compensate the delay of propagation in the cable between antenna and GPS receiver In nano seconds 6 ASCII characters with possible spaces at left O lt d lt 999999 Default value Ons PPS OFFSET 000000000 Positive user offset of the 1PPS signal In nano seconds 9 ASCII characters with possible spaces at left 0 lt o lt 999999999 Default value Ons OSA 4531 E1 User Manual Revision I August 2009 6 12 a Local Management WTR www Set Wait to restore Time In 10s of seconds 3 ASCII characters with possible spaces at left O lt w lt 250 Default value 6 60 s gggg Remaining time for WTR on GPS input in seconds In normal operation gggg 10 www 4 ASCII characters with possible spaces at left 0 lt gggg lt 2500 aaaa
41. mple Selecting the GPS signal to have higher priority than the auxiliary synchronization input Input selection is reversible Reversible If a valid input with higher priority than the current reference returns the equipment will select the higher priority input as its primary reference input OSA 4531 E1 User Manual Revision August 2009 3 3 Equipment Description 3 3 Holdover Capability The GPS 4531 E1 includes a holdover function provided by an OSA 8663 OCXO oscillator 100 000 s GPS signal w SA Output signal from 4531 Figure 3 2 Example of Filtering the GPS Synchronization Signal When the input module is locked to a GPS signal the internal oscillator and memory function ensure that the reference synchronization signal fulfils ITU T recommendation G 811 as shown in above Figure By using the oscillator OSA 8663 OCXO the OSA 4531 E1 GPS SB maintains a sufficient synchronization signal compliant to ITU T rec G 811 for some hours without visual GPS signal Please note that the U S DoD Department of Defence decided to disconnect the SA Selective Availability after May 1 2000 In order to ensure that potential adversaries do not use GPS the U S military is dedicated to the development and deployment of regional denial capabilities in lieu of global degradation OSA 4531 E1 User Manual Revision I August 2009 3 4 Equipment Description 3 4 Phase Build Out When the equipment
42. nal costs are at customer expense Repairs under warranty carry either the balance of the original warranty or a six months warranty whichever is longer Damages resulting from natural wear improper maintenance failure to observe the operating instructions excessive strain unsuited consumption material as well as improper environmental and mounting conditions are excluded from this warranty The warranty expires if the customer or a third party modifies or repairs the product without Oscilloquartz s prior written consent or if the customer does not take immediate steps to prevent the damage from becoming more serious likewise if insufficient time is provided for repair or replacement The customer will not be entitled to other warranty claims Oscilloquartz is not liable for consequential damage OSA 4531 E1 User Manual Revision I August 2009 1 8 Introduction 1 5 Certification EQUIPMENT CERTIFICATION Oscilloquartz equipment is tested according to well defined procedures Appropriate testing and inspection takes place at the component board equipment and system levels The company maintains in house cesium standards that are continuously compared to UTC Before any equipment is released it must satisfy the relevant tests and inspection schedules The equipment is then issued with a Certificate of Conformity that guarantees its conformance with the relevant performance criteria The OSA 4531 E1 GPS is designed to be
43. ng Guide Safety Warranty Certification OSA 4531 E1 User Manual Revision I August 2009 Introduction This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 Introduction Introduction 1 1 About this Manual This manual has been designed to provide basic and detailed information for the correct use and operation of the OSA 4531 E1 It summarizes the overall equipment concept and theory of operation describes the hardware itself and provides information related to installation operation and maintenance It is intended for the use of the following types of users Systems Engineers An overview of the equipment concept and theory of operation Installation Engineers Detailed technical information and procedures for correct installation operation configuration and commissioning as well as equipment specifications and maintenance guidelines Maintenance Engineers Information on troubleshooting maintenance and equipment technical data 1 1 1 Copyright Notice Copyright 2009 Oscilloquartz SA All Rights Reserved The Oscilloquartz product described in this book is furnished under a license agreement and may be used only in accordance with the terms of the agreement The contents and information in this document are provided in connection with Oscilloquartz products No license expressed or implied by estoppels or otherwise to any intellectual property rights is
44. nstallation Including Unpacking and Inspection Working Conditions Tools required Wall Mounting Option Rack Mounting Option Power Supplies GPS Antenna and Auxiliary Input Connections Output Connection Alarm Output Connection Start Up OSA 4531 E1 User Manual Revision I August 2009 4 1 This page has been intentionally left blank OSA 4531 E1 User Manual Revision I August 2009 Installation 4 2 4 1 Installation This section provides unpacking and Inspection instructions working conditions tools required and power up for the OSA 4531 E1 To prevent injury and or equipped damage do not ignore the warnings notes and recommendations and read the section Safety Considerations M Note k If you encounter problems during any of the following procedures please contact Customer Services Unpacking and Inspection LA ESD CAUTION Electrostatic Discharge ESD must be avoided so as not to damage or destroy static sensitive components in the OSA 4531 E1 Please observe proper ESD handling procedures Check first that the packing does not have any signs of rough handling such as dents or scratches which might have occurred during transportation Also inspect the eguipment carefully for possible damages knobs broken handles bent etc Should the equipment have suffered any damage immediately notify the carrier and retain the packing material for inspection AN GAUTION This inst
45. ntentional interruption is prohibited AN POWER Make sure the power sources are compatible with the power inputs of the eguipment The eguipment s protective earth terminals must be connected to the protective conductor of the mains power cord or the station earth The mains plug shall only be inserted in a socket outlet provided with a protective earth contact The protective action must not be negated by the use of an extension cord power cable without a protective conductor grounding OSA 4531 E1 User Manual Revision I August 2009 1 6 Introduction A POWER CORD PROTECTION The power supply cord for this product should be routed or installed in such a manner to protect it from being walked on or pinched The unit should be powered down completely before connecting or disconnecting the power cable The power cord should be removed before moving the unit The power cord must be placed near an easily accessible unobstructed socket outlet AN CLEANING Connected and running eguipment can only be dusted using a soft dry cloth ONLY WITH AUTHORIZED PERMISSION OUT OF SERVICE 8 UNPLUGGED equipment can be cleaned with a soft cloth slightly moistened with a mild detergent solution Do not use liquid cleaners aerosols abrasive pads scouring powders or solvents such as benzine or alcohol Ensure the surface cleaned Is fully dry before reconnecting power A SERVICING AND MODIFICATIONS To avoid dangerous electric shock do not
46. on Returns the current status of the GPS SB module It includes the alarms information the LED and the inputs status Type Request Parameter none Answer STATUS ALARMS a1a2a3a4a5a6a7LED ISTAT IN s1s2s3 lt cr gt lt If gt lt etx gt ALARMS For each digit 0 means alarm condition no active while 1 means alarm condition active al Alarm GPS Timing a2 Alarm Antenna shorted or opened connection a3 Alarm Initialization or Warm up mode a4 Alarm Holdover mode a5 Alarm Tracking Fast mode a6 Alarm OCXO warm up or failure af Alarm Auxiliary input OSA 4531 E1 User Manual Revision I August 2009 6 21 Local Management LED 0 means LED is OFF 1 means LED is red on 2 means LED is red blinking 3 means LED is green on 4 means LED is green blinking 5 means LED is green red blinking STAT IN For s1 and s2 0 means Input is disabled 1 means Input is in Alarm 2 means Input is in Stand by 3 means Input is operational S1 GPS input S2 Auxiliary Input s3 0 Auxiliary Input in alarm 1 Frequency 64kHz detected on Aux Input 2 Frequency 1 544MHz detected on Aux Input 3 Frequency 2 048 MHz detected on Aux Input 4 Frequency 5MHz detected on Aux Input 5 Frequency 10MHz detected on Aux Input 6 E1 code detected on Aux input TAU t lt cr gt lt If gt Description Allows the user to set a new value for the Loop Time Constant Type Entry Parameter t new value for the Lo
47. op Time Constant in seconds 100 lt t lt 50000 Answer none OSA 4531 E1 User Manual Revision I August 2009 6 22 E E Local Management TOD lt cr gt lt If gt Description Return a NMEA 0183 format message about Time Of Day Type Request Parameter none Answer The Time Of Day is provided by GPS receiver This data may be unavailable during few minutes after stating up or if antenna is incorrectly connected There are three ways to answer to the TOD request 15 TOD not available ERROR TOD IS NOT VALID lt cr gt lt If gt 27 TOD is available GMT offset 0 UTC time GPZDA 101534 18 02 2002 00 00 CC lt cr gt lt If gt 3 TOD is available GMT offset 0 local time GPZDA 124534 18 02 2002 03 30 CC lt cr gt lt lf gt TOD_STATE lt cr gt lt lf gt Description Return the status of the soontaneous send of the TOD message Type Request Parameter none Answer TOD_STATE s lt cr gt lt lf gt lt etx gt s D Spontaneous send of the TOD message is disabled The TOD message could be sent in polled mode by using the TOD command s E Spontaneous send of the TOD message is enabled The TOD message is sent each second The TOD command is not active in this case TOD_STATE s lt cr gt lt lf gt Description Set the status of the spontaneous send of the TOD message Type Entry Parameter D Spontaneous send of the TOD message is disabled The TOD message could be sent in polled mode by using the TOD command
48. r of tracked satellites 1 ASCII character0 lt t lt 8 LAT Latitude 7 ASCII characters S sign of the latitude Or dd Number of degrees 0 lt dd lt 90 mm Number of minutes 0 lt mm lt 59 SS Number of seconds 0 lt ss lt 59 LON Longitude 8 ASCII characters S sign of the longitude or ddd Number of degrees O lt d lt 180 mm Number of minutes O lt m lt 59 SS Number of seconds O lt s lt 59 HEI Height 7 ASCII characters S sign of the height Or hhhhhh height in centimetres 100000 lt h lt 999999 DATE Date of the day 8 ASCII characters After a power up the date is no valid during a few minutes and the parameters are 99999999 dd Day of the month 1 lt dd lt 31 mm Month of the year 1 lt mm lt 12 yyyy Year 1980 lt yyyy lt 2077 TIME Time of the day 6 ASCII characters After a power up the date is no valid during a few minutes and the parameters are 999999 hh Hours 0 lt hh lt 23 mm Minutes 0 lt mm lt 59 m Minutes O lt ss lt 60 60is used when 1 leap second is inserted to correct the GPS time versus the UTC time OSA 4531 E1 User Manual Revision I August 2009 6 17 El Local Management INFO VIS SAT lt cr gt lt If gt Description Returns information about the status of the visible satellites Type Request Parameter None Answer INFO VIS SAT nn lt cr gt lt If gt ID iiDOP dddddAZIM aaaELEV eeSTAT s lt cr gt lt lf gt ID iiDOP dddddAZIM aaaELEV eeSTAT s lt cr
49. rate is 9600 baud default b 4800 The baud rate is 4800 baud OSA 4531 E1 User Manual Revision August 2009 6 10 Q E Local Management BAUD RATE b lt cr gt lt If gt Description Configure the baud rate of the serial RS 232 port The baud rate could be 4800 baud to be compatible with NMEA 0183 standard see TOD function Type Entry Parameter b 9600 The baud rate is 9600 baud b 4800 The baud rate is 4800 baud Answer None CLEAR_WTR_GPS lt cr gt lt lf gt Description Clear the current WTR timer of the GPS input Complete the WTR mode Type Request Parameter none Answer none CLEAR WIR AUX lt cr gt lt lf gt Description Clear the current WTR timer of the Auxiliary input Complete the WTR mode Type Request Parameter none Answer none OSA 4531 E1 User Manual Revision l August2009 6 11 po Local Management CONF lt cr gt lt If gt Description Return the current configuration of the GPS SB module Type Request Parameter none Answer CONF T AU tu trMODE mu mrGMT OFFSET shhmmPPS CABLE DELAY ddddddPPS OFF SET 000000000WTR www gggg aaaa lt cr gt lt If gt lt etx gt TAU tu User Loop Time Constant In seconds 5 ASCII characters with possible spaces at left 100 lt tu lt 50000 tr Loop Time Constant currently used by the system In seconds 5 ASCII characters with possible spaces at left 100 lt tr lt 50000 Default value tu 2000 s MODE mu User working
50. rument must be operated only as specified by the manufacturer Use other than as specified may compromise the safety precautions of the system OSA 4531 E1 User Manual Revision I August 2009 4 3 Installation 4 2 Working Conditions In order to work within specification the OSA 4531 E1 GPS SB should be installed at a location which does not exceed the following working conditions Operating temperature range 5 C to 55 C Humidity Up to 95 non condensing 4 3 Tools required For the installation and commissioning of the OSA 4531 E1 the following tools are needed An IBM compatible PC meeting the following requirements Monitor Pentium Processor or better At least 16M of RAM Windows 98 or later CD ROM drive RS 232 serial port Mouse EE e An RS 232 cable to connect the PC to the OSA 4531 E1 GPS SB e Configuration and Monitoring Software for the OSA 453x GPS Receiver Family or Terminal Software e Multimeter DC and AC frequency range up to at least 3 MHz e Oscilloscope bandwidth of at least 30 MHz OSA 4531 E1 User Manual Revision I August 2009 4 4 Installation 4 4 Wall Mounting Option For this purpose the bottom of the shell provides six screw holes M3 as below A ND y A A Q N OO OO Vo ANA A N O Ln N O Q M3 6X Maximal length of the mounting screws 5 3mm Yoo 6 y 9 25 39 25 43 25 9 25 lt q p Fig
51. s and for the OCXO stabilization Tracking Fast After the warm up phase the OCXO Is ready to be tracked but with a short time constant to assure that the system is able to compensate the deviation of the phase during the retrace phase of the OCXO The duration of this phase depends of the status of the OCXO regarding the following process During WARM UP phase the system continuously monitors the slope of the ohase variation versus time between the OCXO signal and the frequency reference GPS or auxiliary input The result of this computation leads to four ways The system stays in WARM UP mode cold OCXO or unavailable reference The system enters in long time TRACKING FAST mode 1 hour The system enters in short time TRACKING FAST mode 10 minutes The systems enters directly in NORMAL TRACKED mode Normal Tracked This is the normal mode of working The system uses the time constant defined by the user 2000s by default Holdover If no input is available the module enters in holdover mode The tracking function is blocked and the OCXO delivers its own frequency for the outputs OSA 4531 E1 User Manual Revision I August 2009 4 12 Installation The state diagram hereunder shows the different transitions that could be appear in the OSA 4531 Power Off Power On E1 GPS SB module Initialisation t lt 10s Warm up Time gt 12 min while none input avaible Warm Up Heating of OCXO Satell
52. s Drive East Suite F 240 Englewood CO 80112 5640 USA Tel 1 303 790 0281 Fax 1 303 790 9197 e mail osausa oscilloquartz com OSA 4531 E1 User Manual Revision August 2009 8 3 Maintenance 8 2 2 Sales For sales assistance contact the following 8 2 2 1 International Oscilloquartz SA Sales amp Marketing 16 Rue de Br vards 2002 Neuchatel 2 SWITZERLAND Tel 41 32 722 5555 Fax 41 32 722 5556 e mail osa oscilloquartz com 8 2 2 2 North America Oscilloquartz USA Sales amp Marketing 14 Inverness Drive East Suite F 240 Englewood CO 80112 5640 USA Tel 1 303 790 0281 Fax 1 303 790 9197 e mail osausa oscilloquartz com OSA 4531 E1 User Manual Revision I August 2009 8 4 S amp L Ordering Information Appendix A Ordering Information The following tables contain the articles and drawing numbers for supplementary accessories and kits Please include Article and Drawing numbers in purchase orders Units Description Article Drawing number number 8663 OCXO 24 48 VDC BNC A013066 945 453 150 000 4531 E1 GPS SB 8663 OCXO 12 VDC BNC A013067 945 453 150 100 Table 8 1 Ordering Units Miscellaneous Accessories o e mn Power Supply AC DC 90 264VAC 24VDC A012950 930 200 004 10 Power Supply AC DC 90 264VAC 12VDC A013382 930 200 006 10 19 mounting kit SERA A014605 982 060 390 screws and screw cages ETSI mounting kit Mouning
53. ue for the delay in holdover mode before the outputs will be squelched In minutes Entry h new value for the HBSQ function O lt h lt 7200 None OSA 4531 E1 User Manual Revision August 2009 6 15 Local Management INFO CHAN lt cr gt lt If gt Description Type Parameters Answer Return detailed status about the height GPS receiver channel Request None INFO CHAN lt cr gt lt lf gt CH1 1D id MODE mS N s lt cr gt lt If gt CH2 ID idMODE mS N s lt cr gt lt lf gt CH3 ID idMODE mS N s lt cr gt lt lf gt CH4 ID idMODE mS N s lt cr gt lt lf gt CH5 ID idMODE mS N s lt cr gt lt lf gt CH6 ID idMODE mS N s lt cr gt lt lf gt CH7 ID idMODE mS N s lt cr gt lt lf gt CH8 ID idMODE mS N s lt cr gt lt lf gt lt etx gt id Satellite identifier O lt id lt 32 m Tracking mode 0 Code search 1 Code acguire AGC set Preq acquire Bit sync detect Message sync detect Satellite time available Ephemeris acquire Available for position S N Carrier to noise EN ratio 0 to 255 dB Hz Sr ed OSA 4531 E1 User Manual Revision August 2009 6 16 Local Management INFO_GPS lt cr gt lt lf gt Description Return geographical information provided by the GPS receiver Type Request Parameter None Answer INFO GPS VSAT vvTSAT tLAT sddmmssLON sdddmmssHEl shhhhhhDATE ddmmy yyy TIME hhmmss lt cr gt lt lf gt lt etx gt VW Number of visible satellites 2 ASCII characters O lt v lt 12 t Numbe
54. ure 4 1 Wall Mounting Option OSA 4531 E1 User Manual Revision I August 2009 4 5 4 5 Rack Mounting Option 4 5 1 19 Mounting The GPS SB can be mounted in a 19 rack The complete mounting kit can be ordered separately 482 6 19 6 6 x 10 88 1 3 47 0 26 x 0 4 465 1 18 31 Installation gt 76 2 3 A 2200 E 000 0990 nN o2 Screw M3x6 OS 0 11x0 23 OO Q 4x Max 20 0 78 J GPS SB 453X 19 RACK MOUNT All dimensions in mm inch 122 4 80 Figure 4 2 Rack Mounting Option 4 5 2 ETSI Mounting ETSI rack mounting is also possible In this case a 19 mounting kit including L 246 9 68 mounting tray and an additional ETSI kit including ears to mount on the 19 tray must be ordered OSA 4531 E1 User Manual Revision I August 2009 4 6 Installation 4 6 Power Supplies The OSA 4531 E1 GPS SB is available in either of these power supply versions Part Number Voltage Range 945 453 150 100 9 18 Voc 945 453 1S0 000 18 60 Voc AN CAUTION Check that the type of supply voltage corresponds to your power feed 4 6 1 Power Up In order to ensure correct powering up of the system it is necessary to follow these instructions Procedure 4 1 Power Up STEP ACTION 1 Connect the ground cable to the Signal Ground Stud if you wish to link the signal ground of the OSA 4531 E1 GPS SB to
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