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1. Date DD MM YYYY 01 v4 01 vil 1980 v Time HH MM SS 00 v 00 00 v Manual Time Manual Time Adjustment Date Format DDMWYYYY Time Reference UC vw Offset for Local Time HH MM v oo oo Leap Second 0 El Leap Second Date ET E 1PPS Phase Offset ns max 500 ms A Synchronization Parameters Force Holdover or wv Priority Level GPS PHoty Priority Level External Reference Priority Force a source as input i None v External 1PPS requires NMEA No Ml Alarm Phase Threshold ns 1000 Alarm Frequency Threshold 1E 9 Hz 10 Distribution Parameters Squelch Auto Mode for 1PPS Disabled Squelch Auto Mode for 10MHz Disabled m Designed by SPECTRACOM a company ofthe OROLIA group Time parameters e Date and Time Set Manual Time button Time manual setting allowed only when the EC20S is in forced holdover mode or when the EC20S has not yet been synchronized on a GPS reference source e Manual Time Adjust Adjust the time by 1 second when the EC20S is in forced holdover mode or when the EC20S is not yet synchronized on a reference source Helpful for fine adjusting manually set time User s Manual 4 21 EPSILON CLOCK MODEL EC20S e Date format DD MM AAAA MM DD AAAA DD AAAA e Time reference UTC GPS Local Spectracom Corporation Selection of display format day month yea
2. Distribution Alarms Optional Distribution Alarms Global 1PPS Outputs IRIG Board Disabled Global 10 MHz Outputs po Board Disabled 2 MHz Board Disabled Output Status ala eS GAME 9 10 1PPS_ BOR RO OR FOR FOR FOR FORE Disabled Disabled Disabled 10 MHz OK GR FOR TORY FORE RO FORE Disabled Disabled Disabled GPS Status GPS Longitude 2 11 30 206ms E Best Satellites GPS Latitude 48 41 16 968ms N 11 19 32 57 GPS Altitude 205 84 m 42 39 39 38 Self Survey In Progress 14 3 28 6 Visible Satellites 9 12 37 36 34 34 NMEA Status NMEA Longitude 0 00 00 000ms E NMEA Latitude 0 00 00 000ms N NMEA Altitude 0 00 m Designed by SPECTRACOM a company ofthe OROLIA group This page is automatically refreshed every 5 seconds The Alarm label indicates an urgent alarm during which the distributed signal does not comply with its specifications for some reason no signal tracking not locked no reference source Warning means that the detected problem does not affect the distributed signal quality but the operator should take action to solve the problem User s Manual 4 9 EPSILON CLOCK MODEL EC20S Global Status e EC20S Status Ok Warning Alarm e SEN Status On Off e Synchronization Source GPS External None e Oscillator Control voltage
3. Red No synchronization source is present Yellow One or more synchronization source are not present The unit use present source Green All synchronization sources are present DISTRIBUTION DST Indicates the current status of the distributed 1PPS and 10MHz Red No distribution or error on 1PPS and 10MHz outputs Yellow Distributions of signals are provided without accuracy Green Distributions of signals are provided with accuracy The blinking is synchronised to blinking 1PPS On normal operation all LEDs should be green Only available synchronization sources should be enabled Only available power alarms should be enabled 1 7 1 2 Set IP Button SET IP Micro Press this button more than 2 seconds to re initialize product with a static IP Switch address User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 1 7 2 EC20S Back Panel Connectors Connector Type Description AC POWER IEC 320 C14 AC power entry with integrated fuse DC POWER XLR circular DC power supply input 10MHz 7 option 3 50 O BNC Distributed sinus frequency outputs Distributed One Pulse Per Second outputs External input for a 1PPS 1PPS 7 option 3 50 Q BNC Exlerhal 1RES APENE Synchronization source Ethernet 10 100 BaseT 50 Q BNC Network connectivity Antenna inputs for GPS receiver and SPS Antenne 90S remote active anten
4. Accuracy to UTC instantaneous phase locked 35ns max With OCXO Holdover constant temperature 24 hours GPS locked after 4 hours 0 8 us after 1 day 10 us With Rubidium Holdover constant temperature 24 hours GPS locked after 4 hours 0 3 us after 1 day 2 US User s Manual 2 3 EPSILON CLOCK MODEL EC20S Spectracom Corporation 2 2 Auxilliary Connector Signals 2 2 1 Alarms Number of Relay contact 2 Maximum switching power 30 W 62 5 VA resistive load Maximum switching voltage 110 VDC 125 VAC Maximum switching current 1A Port type 9 pin female SUB D 2 2 2 NMEA RS232 output for Time of Day TOD information NMEA mode Asynchronous RS232C 9600 bauds 8 bits 1 stop bit no parity Port type 9 pin female SUB D 2 4 User s Manual Spectracom Corporation 2 3 Network Connectivity 2 3 1 Ethernet Interface Port type RJ45 connector Interface 10 100 BaseT signal 2 3 2 IP Address Assignment DHCP automatic assignment Or fixed IP address 2 3 3 Protocols Transfer Control Protocol and Internet Protocol TCP IP IP address setting DHCP protocol EPSILON CLOCK MODEL EC20S The EC20S includes a web pages server with HTTP protocol for configuration and status Configuration and status parameters are manageable through SNMP protocol The MIB includes a sub set of configuration and status parameters SNMP traps are sent to the net
5. SNMP RO Community public Ex public SNMP RW Community L private private The above values become effective after a reboot Traps Setup Trap Community Name public Ex public IP Address Traps Destination 1 Ex 192 168 0 101 IP Address Traps Destination 2 B Ex 192 168 0 102 Global Traps Enable No w EC20S Status Change GPS Fault External 1PPS Fault NMEA Fault Internal Oscillator Fault Internal 1PPS Fault Phase Accuracy Fault Frequency Accuracy Fault Synchronisation Source Change Tracking Status Change Power Fault Option Distribution IRIG Fault Option Distribution STANAG Fault Option Distribution 2 MHz Fault 1PPS Output Fault 10 MHz Output Fault Designed by SPECTRACOM a company of the OROLIA group e SNMP RO Community SNMP parameter for get request e SNMP RW Community SNMP parameter for set request RO and RW communities will become effective after a software reboot of unit Tools menu e Trap Community SNMP parameter is sent in trap messages and helps identify the managed equipment family public by default 4 18 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S e P Address Traps destination 1 Primary SNMP manager address where traps are sent Clear field to deactivate e P Address Traps destination 2 e Global Traps Enable Yes No
6. TRAPS DEST ATION 2 GET SE c20s TRAPS COMMUNITY GET SE c20s TRAPS ENABLE GET SE c20s CFG FREO ALARM LIMIT GET SE c20s CFG PHASE ALARM LIM GET SE c20s CFG DATE FORMAT GET SE c20s CFG 1PPS SQUELCH AUTO GET SE c20s CFG 10MHZ SQUELCH AUTO GET SE 5 2 Spectracom Corporation User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 5 2 SNMP TRAPS Traps are generated on events related to alarm and warning activation and deactivation as well as configuration modification The two trap destinations are programmable and traps are individually enabled in the SNMP Setup web page Name ec20sGeneralHardwareFault ec20sGpsFault ec20sExternalPpsFault ec20sNmeaFault ec20sInternalOscFault ec20sInternalppFault ec20sPhaseAccuracyFault ec20sFreqAccuracyFault ec20sSyncSourceChangeAlarm ec20sEnteringHoldoverModeAlarm ec20sPowerFault ec20sOptionlrig ec20sOptionStanag ec20sOption2MHz ec20sOutputPPSFault ec20sOutput10MHzFault User s Manual 5 3 Spectracom Corporation EPSILON CLOCK MODEL EC20S 6 Maintenance 6 1 Periodic Verification and Calibration The EC20S is fully automatic functioning and self calibrated It does not require maintenance for a period of 10 years 6 2 Updating the Software Version See corresponding web pages to perform the upgrade 6 3 Spare Parts Fuses 5x20 1A D1TD M
7. e EC20S Fault Yes No e GPS fault Yes No e External 1PPS Fault Yes No e NMEA Fault Yes No e Internal oscillator Fault Yes No e Internal 1PPS Fault Yes No e Phase Accuracy Fault Yes No e Frequency Accuracy Fault Yes No User s Manual Secondary SNMP manager address where traps are sent Traps are sent according to individual enabling No trap generated Generates a trap when the EC20S goes on default according to Global Status No trap generated Generates a trap when the gps receiver fails or unlocks according to GPS Locked No trap generated Generates a trap when the External 1PPS is lost while enabled No trap generated Generates a trap when the NMEA input is lost while enabled No trap generated Generates a trap when the frequency driver goes on alarm generally the oscillator goes on default No trap generated Generates a trap when the 1PPS driver goes on alarm No trap generated Generates a trap when estimated phase of the output signal exceeds the phase limit No trap generated Generates a trap when estimated frequency of the output signal exceeds the phase limit No trap generated 4 19 EPSILON CLOCK MODEL EC20S Spectracom Corporation e Synchronization Source Change Yes Generates a trap when the source of synchronization changes No No trap generated e Tracki
8. fields Mobile The GPS receiver computes its position continuously so that the EC20S with GPS antenna can be moved e Latitude Longitude Altitude Data defining the geographic position of the GPS antenna applied in time processing while in manual mode User s Manual 4 25 EPSILON CLOCK MODEL EC20S Spectracom Corporation 4 3 9 Power Setup page According to actual power supply connection the operator must set which power alarm AC or DC left and right should be enabled SPECTRACOM Power Alarm Configuration AC Power Enabed v DC Power Enabled ml Save configuration Designed by SPECTRACOM a company ofthe OROLIA group e AC Power Check AC power supply Enable Generates an alarm if AC power supply is not available Disable No alarm generated e DC Power Check DC power supply Enable Generates an alarm if DC power supply is not available Disable No alarm generated 4 26 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 4 3 10 Versions This page displays the version number of key elements of EC20S software and firmware O SPECTRACOM Synchronizing Critical Operations System Setup Clock Setup Clock Status Tools EC20S Version Archive version Current version 01 00 System version Current version 01 01a Firmware version Current version 101 01 Designed by SPECTRACOM a company oft
9. modified in the Network Setup page D S PEGTRACOM CP Bees UM etae setup GPS Setup GPS Configuration Antenna Delay ns 0 to 1000ns 0 GPS Mode Automatic y Latitude Setup co oof oo oomen Longitude Setup 000 ooft o0 O0 ms E Altitude Setup m 0 Save configuration Designed by SPECTRACOM a company ofthe OROLIA group User s Manual 4 15 EPSILON CLOCK MODEL EC20S Spectracom Corporation 4 3 5 Network Setup page This page allows the user to modify the Network connection parameters srecrracom Jp m Network Setup Host Name Spectracom Ex myhost Use DHCP Yes v Select if you want to dynamically get an IP address IP Address 17216 207 12 Ex 192 168 0 2 Sub network Mask 255 255 255 0 Ex 255 255 255 0 Sub network Address 172 16 207 0 Ex 192 168 0 0 Broadcast Address 17216 207255 Ex 192 1680 255 Default Gateway 172162071 Ex 19216801 Password Change New Password soo Confirm New Password E Save configuration Designed by SPECTRACOM a company of the OROLIA group When set in Use DHCP mode if the EC20S starts without network connection the IP address is not set After the network connection is restored a 1 or 2 minute delay occurs before the IP address is assigned Network Setup e Host Name
10. AC lead e One DC connector kit e User s Manual 1 4 Inspection Unpack the equipment and inspect it for damage If any equipment has been damaged in transit please contact Spectracom Customer Service Customer service is available by telephone at 33 0 1 64 53 39 80 France or 1 585 321 5800 United States Updated contacts information are available on web site see Support page 1 2 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 1 5 General Description The EPSILON CLOCK MODEL EC20S is a GPS Clock providing the best cost effective solution for reliable and 24 hour a day uninterrupted applications The EC20S is particularly well suited for broadcast operators requiring high quality reliability and availability The Spectracom EC20S is well dedicated to digital broadcast applications using SFN Single Frequency Network mode The EC20S gives the high reliability required at any step of the network from SFN adapters to high and medium power transmitters and gap fillers The EPSILON CLOCK MODEL EC20S provides accurate time and frequency synchronization Key parameters are e High performance OCXO or Rubidium oscillator disciplined by GPS through EpsiltimeO smart predictive slaving algorithm e High performance holdover stability 2 10 day e AC and DC power supply redundancy e Upto 10x 1 PPS outputs e Upto 10x 10 MHz outputs e 1 PPS and 10 MHz signals are phased locked which helps prevent phase jump an
11. C hhmmss ss A IIII Il a yyyyy yy a x x x x ddmmyy x x a hh o RMC Recommended Minimum Specific GPS TRANSIT Data o hhmmss ss UTC of position fix o A status of the EPSILON CLOCK MODEL EC20S A OK V warning o MLI Latitude of fix o a NorS North or South o yyyyy yy Longitude of fix o a E or W East or West o XX not used set to 0 o XX not used set to 0 o ddmmyy UTC date o XX not used Set to 0 o a Set to E o hhz Checksum User s Manual 7 3 EPSILON CLOCK MODEL EC20S Spectracom Corporation 7 2 ALARM Connector Type of Connector SUB D9 Female EE NEED i O O TOO OOOO o The Ein our Orin of the connector is described in the following table A m O x 1 RL URG C 6 RL URG T 2 Reserved 7 RL URG R 3 Reserved 8 RL NON URG R 4 RL NON URG C 9 RL NON URG T 5 GND The inputs outputs of the SUB D connector are defined in the following table GND Ground Reserved Do not connect any signal to this pin RL_URG_C Urgent Alarm Common contact RL_URG_T Urgent Alarm Active opened contact RL_URG_R Urgent Alarm Active closed contact RL_NON URG_C Non Urgent Alarm Common contact RL_NON URG_T Non Urgent Alarm Active opened contact RL_NON URG_R Non Urgent Alarm Active closed contact If one wants to get a closed contact when Urgent Al
12. EPSILON CLOCK MODEL EC20S USER S MANUAL 95 Methodist Hill Drive Rochester NY 14623 Phone US 1 585 321 5800 Fax US 41 585 321 5219 3 Avenue du Canada 91974 Les Ulis France Phone 33 0 1 64 53 39 80 Fax 33 0 1 64 53 39 81 www spectracomcorp com www spectracom fr Ref Number 170142 A1 Manual Revision A1 09 December 2008 Copyright O 2008 Spectracom Corporation The contents of this publication may not be reproduced in any form without the written permission of Spectracom Corporation Specifications subject to change or improvement without notice Spectracom EPSILON CLOCK NetClock Ageless TimeGuard TimeBurst TimeTap LineTap MultiTap VersaTap and Legally Traceable Time are Spectracom registered trademarks All other products are identified by trademarks of their respective companies or organizations All rights reserved SPECTRACOM LIMITED WARRANTY LIMITED WARRANTY Spectracom warrants each new product manufactured and sold by it to be free from defects in software material workmanship and construction except for batteries fuses or other material normally consumed in operation that may be contained therein AND AS NOTED BELOW for five years after shipment to the original purchaser which period is referred to as the warranty period This warranty shall not apply if the product is used contrary to the instructions in its manual or is otherwise subjected to misuse abnormal operations accident l
13. Hold Time Time before phase or frequency alarms happen Depending on synchronization setup 4 2 Alarm Connector This SUB D connector may be used to provide a control switch dry relay contact for any alarm display There are two relays Alarm and Warning According to the selected wiring for the alarm monitor a relay can be closed when the alarm is on or open refer to the pin out of the SUB D connector 4 6 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 4 3 Web Pages 4 3 1 Welcome Page D SIEG TR EA COM Bel WELCOME TO EC20S INTERFACE Click to enter Spectracom 3 Avenue du Canada 91974 Les Ulis Cedex France Tel 33 0 1 64 53 39 80 Fax 33 0 1 64 53 39 81 Email sales spectracom fr Web www spectracom fr Click to enter the web site The first displayed page is the Clock Status page User s Manual 4 7 EPSILON CLOCK MODEL EC20S Spectracom Corporation 4 3 2 Upper task bar and page header This menu bar gives access to the following menus e System Setup Network Setup Network connection parameters protected by password Traps Setup SNMP parameters and traps enable protected by password Logout Logout from the web site e Clock Setup Time and Synchronization Setup Setting the time and synchronization parameters protected by password GPS Setup GPS reception parameters protected by password Power Setup Enable of power supply mo
14. L EC20S EPSILON CLOCK MODEL EC20S Spectracom Corporation 4 1 4 4 1 5 4 1 6 4 1 7 4 1 8 4 1 9 4 1 10 4 2 4 3 4 3 1 4 3 2 4 3 3 4 3 4 4 3 5 4 3 6 4 3 7 4 3 8 4 3 9 4 3 10 4 3 11 4 3 12 5 5 1 5 2 6 6 1 6 2 6 3 6 4 6 4 1 6 4 2 7 7 1 7 1 1 7 1 2 7 1 3 7 2 Distribution Motonet mesh ad 4 2 GPS RES coma 4 2 Equipment STATED dde 4 3 Start up sequence detail singe sr es 4 3 Short loss of source sequence detail es 4 4 Holdover s quence d tails nn A reed rede 4 6 Source change sequence detal ci dd 4 5 Alarm Connector 4 6 Web Pages 4 7 Welcome Pages o aaa 4 7 Upper task bar and page header ion id 4 8 ClockStatus page an ea A A ia 4 9 Password page a a le 4 15 Network Setup Page a le 4 16 SNMP Setup Page dai 4 18 Time amp Synchronization Setup page is 4 21 SPS SUI PA do 4 25 Power Setup Par las 4 26 bci e 4 27 Software Upgrade oi 4 28 Reboal ses Sheila 4 29 SNMP CONIROL Jis edi tds 5 1 MIB Content 5 1 SNMP TRAPS 5 3 MAINTENANCE iiie nsi eset quesiti ceda 6 1 Periodic Verification and Calibration 6 1 Updating the Software Version 6 1 Spare Parts 6 1 Troubleshooting 6 2 Searching for Alarm Origin aa ea ead eee Mas Ci aq EE 6 2 Customer Support Information ac oe il adeno 6 2 APPENDIX A 7 1 NMEA Connector 7 1 DIO it aoc du dodo Gu pup DU MAC Datum tap td bn d abad utut 7 1 NMEA Message pinar lada 7 2 NMEA Messase QUito ege ben sidra dan 7 3 ALARM Connector 7 4 User s M
15. SILON CLOCK International Earth Rotation Service Medium Access Control Management Information Base Network Time Protocol Simple Network Management Protocol National marine Electronics Association Inter Range Instrumentation Group Spectracom Corporation EPSILON CLOCK MODEL EC20S 2 Technical Features 2 1 Timing Reference Generation and Characteristics The following characteristics are minimum values Enhanced performance options are available 2 1 1 GPS Reception Connector Antenna female 50 2 type N 2xL1 GPS C A code Power supply to active antenna 5V 80mA max Fold Back protection The power supply is cut in the event of a short circuit in the antenna input 2 1 2 1PPS External Synchronization Input TTL level Input impedance 500 500 BNC connector Active rise edge high level duration 100us minimum Minimal Accuracy to UTC 50ns 10 CAUTION If the External Synchronization Input do not have the required minimum characteristics the global performance of the EPSILON CLOCK MODEL EC20S will decrease dramatically User s Manual 2 1 EPSILON CLOCK MODEL EC20S Spectracom Corporation 2 1 3 Phase Lock in at Power up 2 1 3 1 Warming up Warm up time for the local oscillator before tracking search 5 minutes A subsequent fast tracking search brings the oscillator frequency close to the reference input signal frequency 2 1 3 2 Lock in Time with GPS signal Output wander
16. TA 10MHZOUT FAILURE GET c20s STA FREQ ERROR GET c20s STA FREQ ALAR GET c20s STA PHASE ERROR GE c20s STA PHASE ALARM GET ec20s STA REFEXT PRESENCE GET c20s STA NMEA VALIDITY GE ec20s STA HOLDOVER GET ec20s STA DCPOWER OK GET ec20s STA ACPOWER OK GET c20s STA OPT IRIG OUT GET c20s STA OPT STANAG OUT GET c20s STA OPT 2MHZ OUT GET ec20s GPS LOCKED GET c20s GPS SAT LOCKED GET c20s GPS SAT IDI GET c20s GPS SAT SNRI GET c20s GPS SAT ID2 GET c20s GPS SAT SNR2 GET c20s GPS SAT ID3 GET c20s GPS SAT SNR3 GET c20s GPS SAT ID4 GET c20s GPS SAT SNR4 GET c20s GPS SAT ID5 GET c20s GPS SAT SNR5 GET c20s GPS SAT ID6 GET c20s GPS SAT SNR6 GET c20s GPS SAT ID7 GET User s Manual 5 1 EPSILON CLOCK MODEL EC20S c20s GPS SAT SNR7 GET c20s GPS SAT ID8 GET c20s GPS SAT SNR8 GET c20s GPS SAT ANTENNA MODE GET ec20s GPS RECEPTION MODE GET ec20s GPS ANTENNA STATUS GET ec20s GPS LATITUDE GET ec20s GPS LONGITUDE GET ec20s GPS ALTITUDE GET c20s NTP MAC ADDRESS GET ec20s NTP STRATUM LEVEL GET c20s TRAPS DESTINATION 1 GET SE c20s
17. Unique name of the EC20S in the network This functionality depends on the DNS server type e Use DHCP Dynamic Host Configuration Protocol Yes The Dynamic Host Configuration Protocol function is available In this case the IP address of the EC20S is automatically allocated by the network DHCP server according to the EC202S MAC address Following fields do not apply No The Dynamic Host Configuration Protocol function isn t available A static IP address is used In this case the operator must fill in the fields that follow e IP Address Sub network Mask Sub network Address Broadcast Address Default Gateway Fields allowing configuration of the network access when the DHCP is set to No 4 16 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S Password Change e New Password Field for password modification This password is required when accessing setup pages e Confirm Password Field for password verification WARNING If the user forgot the password the product must come back to Spectracom for put the default password User s Manual 4 17 EPSILON CLOCK MODEL EC20S Spectracom Corporation 4 3 6 SNMP Setup page In this page the operator can enable the SNMP traps generation and program RO and RW community names The SNMP traps report an event alarm or configuration modification by sending a trap message to a destination D SRECTRACOIM N REN Clock Status SNMP Setup
18. anual Spectracom Corporation EPSILON CLOCK MODEL EC20S Introduction 1 1 Safety Precautions e Before switching on the unit ensure that it is compatible with the local mains supply Refer to Setting the EC20S Into Operation e The plug must be inserted into a socket with earth connection The safety connection must not be broken by using an extension cord without earth conductor e Before switching on the unit if the unit is connected to measurement or control circuits protective earth terminal s shall be connected to a protective conductor e f measurement or control circuits are without earth ground protection terminal s the mains plug shall be inserted before connections are made to measurement or control circuits WARNING If the protective conductor s path to ground is broken or defeated the danger of electrical shock to the operator may be present Never break the connection on purpose Before disconnecting the unit from the main power supply always switch it off Failure to do may cause damage that voids your Spectracom warranty 1 2 Safety during Adjustments Maintenance and Repair When the unit is connected to the power supply it may be dangerous to touch the terminals and parts that may be exposed when opening covers or removing components except for plug in components The unit must be disconnected from all power sources before carrying out any adjustments replacements maintenance or repair Wh
19. anufacturer CEHESS SHURTER manufacturer part number 7040 3120 DC connector kit Manufacturer NEUTRIK manufacturer part number NC3FXY female plug User s Manual 6 1 EPSILON CLOCK MODEL EC20S Spectracom Corporation 6 4 Troubleshooting Symptoms can be diagnosed from front panel LEDs and using information from the web interface 6 4 1 Searching for Alarm Origin 6 4 1 1 LED Indicators Power Alarm Shows the validity of the power supply Source alarm Shows the validity of the reference source Distribution alarm Shows the state of outputs and state of the tracking algorithm 6 4 1 2 Web Interface status analysis 6 4 1 2 1 Method The purpose of the method is to determine what object has failed Input reference source or hardware failure Then in case of hardware failure the user must determine if the failure comes from component in the EC20S The Web interface status windows give some information on the input reference sources on the distributed output signals on the frequency generation on the signal distribution 6 4 1 2 2 EC20S Status The EC20S status page can tell if the tracking algorithm is locked and if a signal is sent to the distribution Any abnormal detected function leads to the unit replacement 6 4 1 2 3 GPS Status The GPS receiver is an autonomous module connected to the unit The GPS should be able to decode at least 4 satellites to be used as a timing reference Possible situations could be a low received le
20. arm is active 1 7 should be used If one wants to get a closed contact when Non Urgent Alarm is active 4 8 should be used If one wants to get an opened contact when Urgent Alarm is active 1 6 should be used If one wants to get an opened contact when Non Urgent Alarm is active 4 9 should be used 7 4 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S User s Manual 7 5 REVISION HISTORY Level Number 08 10 08 First Release 09 12 08 Web Page Updated Spectracom Corporation 95 Methodist Hill Drive 3 Avenue du Canada Rochester NY 14623 91974 Les Ulis France www spectracomcorp com www spectracom fr Phone US 1 585 321 5800 Phone 33 0 1 64 53 39 80 Fax US 1 585 321 5219 Fax 33 0 1 64 53 39 81
21. ble the source this source is not supervised no corresponding alarm e Priority Level External Reference Programs the priority of the External 1PPS synchronization source Priority 1 Highest priority Priority 2 Medium priority Priority 3 Lowest priority Disable Disable the source this source is not supervised no corresponding alarm e Force a source as input Force the EC20S to be synchronized on a reference source even if other sources with a highest priority are available for debug purposes None GPS External Reference e External 1PPS requires NMEA External source use NMEA input to datecode the 1PPS Yes No e Alarm Phase Threshold Programs the limit value in nanoseconds of the accuracy after which the 1PPS signal output is deemed invalid e Alarm Frequency Threshold Programs the limit value in 10 9 hertz of the accuracy after which the 10MHz signal output is deemed invalid User s Manual 4 23 EPSILON CLOCK MODEL EC20S Spectracom Corporation Synchronization parameters e NMEA Port Baud Rate Set Speed of in out message on NMEA connector e Squelched Auto Mode for 1PPS If enabled squelching is applied to distributed signals on phase alarms triggering Enable Output signal is squelched on phase alarm Disable Signal always available at the output e Squelched Auto Mode for 10MHz If enabled squelching is applied to distributed signals on frequency alarms triggerin
22. com Corporation EPSILON CLOCK MODEL EC20S 4 3 12 Reboot If the unit malfunction occurs the operator can order a soft or hard reboot If the unit is not reachable the requested reboot will not be processed Select type of reset Click on Yes to confirm the reboot srectracom le Reboot Reboot Type Hardware v A Hardware Reboot stops signals distribution Please confirm reboot Designed by SPECTRACOM a company ofthe OROLIA group WARNING Hard reset stops signals distribution Take care about your choice User s Manual 4 29 Spectracom Corporation EPSILON CLOCK MODEL EC20S 5 SNMP Control 5 1 MIB Content MIB is made of elements related to e Configuration parameters that can be read GET procedure and written SET procedure e Status information similar to the status displayed on the web page which can be read GET procedure Name GET SET ec20s STA HARDWARE OK GET ec20s STA DATETIME GET ec20s STA TIMEREF GET ec20s STA SYNCTIME GET ec20s STA 1PPSOUT GET ec20s STA 1PPSOUT FAILURE GET ec20s STA 10MHZOUT GET ec20s S
23. compatible with EN 300 462 4 1 4 1 fig 1 in 600 s max after warming up Optimum stabilization after 2 hours Total locking time after power up lt 30 minutes if not a first time power up 2 1 4 10MHz Output Number of outputs 7 Port type 500 BNC coaxial Level 12 2dBm with a 50Q load Type Sinewave signal 40dBc harmonic distortion 2 1 4 1 Phase Noise Typical static conditions With OCXO 10Hz 120dBc Hz 100Hz 135dBc Hz 1kHz 145dBc Hz 10kHz 150dBc Hz 100kHz 150dBc Hz With Rubidium oscillator 10Hz 110dBc Hz 100Hz 130dBc Hz 1kHz 140dBc Hz 10kHz 145dBc Hz 100kHz 145dBc Hz 2 1 4 2 Holdover Mode According to EN 300462 4 1 89 2 Transmission and Multiplexing TM Generic requirements for synchronization networks Stability lt 2x10 day with OCXO lt 5x10 day with Rubidium oscillator 2 2 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 2 1 4 3 Short Term Stability Allan Variance With OCXO 1s 1x10 10s 3x10 100s 3x10 With Rubidium oscillator is 3x10 10s 1x10 100s 3x10 2 1 4 4 Temperature Stability With OCXO Peak to peak from 0 to 60 CC 1x10 With Rubidium Oscillator Peak to peak from 0 to 50 1x10 70 2 1 5 1PPS Output Number of outputs 7 Port type 500 BNC coaxial Level TTL 5V with a 50Q load Accuracy to UTC GPS locked 25ns 10
24. d wander between time and frequency signals e Remote management by SNMP HTTP through Ethernet port User s Manual 1 3 EPSILON CLOCK MODEL EC20S Spectracom Corporation 1 6 Integrated Remote Control Interface The EC20S contains an Ethernet IP interface so that it can be fully controlled from a remote location The EC20S includes its own HTTP web server so that a simple navigator is sufficient to configure and retrieve status from the equipment Application and system software release is also possible through this interface Moreover network supervision can be achieved with SNMP protocol especially traps sent to a programmable IP address 1 4 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 1 7 Front and Rear Panels NOIVILIIAS SMOILVUNEO TWDILINO DMIZIMONHINAS m T a o z o E o o A o S m m m Q D o a User s Manual 1 5 EPSILON CLOCK MODEL EC20S Spectracom Corporation 1 7 1 EC20S Front Panel 1 7 1 1 Front Panel LEDs POWER PWR Indicator of AC and DC power supplies status Red Indicates Initialisation of product blinking Red Indicates general fail of product Yellow Indicates the missing of one power supply Green Indicates presence of all power supplies SOURCE SRC Indicates the current status of the enabled synchronization source GPS External synchronization source
25. e STANAG Board OK Alarm Disabled e 2MHz 2MBit Board OK Alarm Disabled User s Manual EPSILON CLOCK MODEL EC20S Monitoring of the frequency output signals delivered by the EC20S The signal is delivered at all outputs The signal is not delivered at one of the outputs The signal is not delivered shut off for frequency accuracy alarm reason Monitoring of the 1PPS output signals delivered by the EC20S The signal is delivered at all the outputs The signal is not delivered at one of the outputs The signal is not delivered shut off for phase accuracy alarm reason Monitoring of the outputs signals delivered by the EC20S optional board The signal is delivered at all outputs The signal is not delivered at one of the outputs The optional board is not present in unit Monitoring of the outputs signals delivered by the EC20S optional board The signal is delivered at all outputs The signal is not delivered at one of the outputs The optional board is not present in unit Monitoring of the outputs signals delivered by the EC20S optional board The signal is delivered at all outputs The signal is not delivered at one of the outputs The optional board is not present in unit 4 13 EPSILON CLOCK MODEL EC20S Output status Spectracom Corporation State of the signals delivered by the EC20S OK Alarm Squelched Disabled GPS Status e GPS Longitude e GPS Lat
26. e Tracking Status Warming up Tracking search Locked Holdover Forced Holdover e Synchronization Time 4 10 Spectracom Corporation Global working status of EC20S All functions run as expected no alarm in EC20S EC20S distributes valid signals referenced to a valid input GPS or External but alarms remain Maintenance is required EC20S does not distribute a valid signal GPS input loss any other important failure Indicates when unit is in SFN mode or not EC20S is in SFN mode means that the 10MHz frequency signal is cycle locked to the 1PPS signal 10 000 000 cycles from the 10 MHz equals 1PPS period and provides a frequency accuracy better than 1X10 8 and a phase accuracy better than 1us EC20S is not in SFN mode Selected synchronization source for the module 1PPS signal of the GPS receiver External 1PPS signal BNC rear panel input EC20S in Holdover or Forced Holdover mode Control voltage of the internal oscillator in volts Ranges from OV to 8V Generates an Internal Oscillator alarm when the value reaches OV or 8V meaning that the EC20S is no longer able to drive the Internal Oscillator Slaving algorithm status The EC20S internal oscillator is warming up The EC20S receiver is searching best slaving conditions The EC20S receiver has reached the best slaving conditions The slaving has been suspended because of loss of synchronization conditions The slaving has b
27. e Warm up period after power up during which the oscillator control is stationary e Fast tracking for coarse oscillator control adjustment on tracking algorithm start up e Accurate tracking with long time constant filtering when the reference signal is present The oscillator is locked on the reference Distribution LED switches to green e Holdover when reference signal is absent e g GPS loss of satellites during input switchover Oscillator control remains steady on the last valid value e Degraded state Hidden state in which tracking was accurate and lost its reference input Before declaring urgent alarm on the EC20S a delay of a few minutes factory programmable is used to confirm the loss of the reference source and the switch to the holdover state with alarm triggering 4 1 4 Distribution Monitoring All channels are monitored so that a drop of signal at the output is detected and an alarm Outputs Frequency and 1PPS is generated 4 1 5 GPS Reception An integrated module takes care of the GPS reception All related configuration parameters and reception status are available through the web interface The operator may choose among three operating modes e Manual or fixed The operator sets manually the accurate coordinates for the receiver The receiver can then start immediately in an accurate timing reception mode This mode needs only one satellite e Automatic The receiver starts computing its polar coordinates and af
28. een suspended on user request Time during EC20S is synchronized to a valid source User s Manual Spectracom Corporation Alarms GPS Alarms GPS Locked OK Alarm Antenna Status Unpowered Powered Shorted GPS Module Status OK Alarm Internals Alarms Internal Oscillator OK Alarm Internal 1PPS Alarm User s Manual EPSILON CLOCK MODEL EC20S Performance of the 1PPS signal of the GPS receiver 1PPS signal of the GPS receiver can be used as 1PPS reference signal for slaving operation 1PPS signal of the GPS receiver can t be used as 1PPS reference signal for slaving operation State of the connection to the GPS antenna GPS antenna is disconnected or incorrectly powered Use of an antenna splitter produces this message No alarm generated for this reason GPS antenna is connected and correctly powered GPS antenna is in short circuit Working state of the GPS receiver The GPS receiver is working well Problem with the GPS receiver Communication breakdown with the GPS receiver or 1PPS signal not delivered by the GPS receiver Monitored status of the 10MHz generated by internal oscillator Frequency driver operational Frequency driver failure Monitored status of internal 1PPS generated from oscillator frequency 1PPS driver operational 1PPS driver failure 4 11 EPSILON CLOCK MODEL EC20S 4 12 Power Supply AC OK Alarm D
29. el to the frame of the rack 3 2 Powering Up The EC20S can be powered from an AC source from a DC source or from both For full redundancy connect DC power cables to the DC connector and AC power cable to the AC connector Checks the polarity of the power signal before connecting it refer herein and to back panel labels for the pin out Power up is immediate when connecting DC power with the cable while AC power must be switched on e During power up check the initialization sequence process on the LED For a standard configuration GPS reference after the system initialization sequence the GPS receiver locks to the satellites Source LED switches from red to green the internal oscillator warms up and the oscillator tracking operation gets locked The whole process may take about 15 minutes User s Manual 3 1 EPSILON CLOCK MODEL EC20S Spectracom Corporation 3 3 Network Connection Factory setting for the network is dynamic address DHCP configuration If not DHCP server is available press the Set IP button to set IP address at 192 168 0 100 in static mode Connect the control PC through a crossover Ethernet cable or a hub Set the control PC IP address to an address belonging to the same sub network e g 192 168 0 101 On the control PC open a web browser page at http 192 168 0 100 Click to enter the web interface Go to System Setup gt Network Setup web page Enter password factory set at pwd Mod
30. en it is unavoidable to open the unit for maintenance and repair such operations should be carried out only by qualified personnel who are properly informed of the hazards involved Only fuses with a suitable rating and of the specified type are to be used for replacement purposes It is prohibited to use fuses that have been tampered with or shorted fuse holders For special hot plugging removal please follow the instructions Maintenance WHENEVER IT IS LIKELY THAT PROTECTION HAS BEEN IMPAIRED THE APPARATUS MUST BE SWITCHED OFF DISCONNECTED AND SECURED AGAINST ANY UNINTENDED OPERATION User s Manual 1 1 EPSILON CLOCK MODEL EC20S Spectracom Corporation 1 3 Inventory Before installing your Spectracom product please verify that all material ordered has been received If there is a discrepancy please contact Spectracom Customer Service Customer service is available by telephone at 33 0 1 64 53 39 80 France or 1 585 321 5800 United States Updated contacts information are available on web site see Support page CAUTION Electronic equipment is sensitive to Electrostatic Discharge ESD Observe all applicable ESD precautions and safeguards when handling the Spectracom equipment NOTE If equipment is returned to Spectracom it must be shipped in its original packing material Save all packaging material for this purpose The basic shipment includes the following items e EPSILON EC20S Base Unit e One
31. g Enable Output signal is squelched on frequency alarm Disable Signal always available at the output 4 24 User s Manual Spectracom Corporation 4 3 8 GPS Setup page On this page the operator set the GPS receiver parameters GPS Configuration EPSILON CLOCK MODEL EC20S Antenna Delay ns 0 to 1000ns GPS Mode Automatic v Latitude Setup ooje 00 ooj O0msN Longitude Setup 000j oo o0 ooolms E Altitude Setup m 0 Save configuration Designed by SPECTRACOM a company ofthe OROLIA group e Antenna Delay Time shift compensating the propagation delay of the GPS signal in the antenna cable in nanosecond To be computed according to type and length of cable e GPS Mode Defines the receiver operating mode regarding the position processing Automatic The GPS receiver averages during 1 hour the antenna position supplied by the receiver in order to make it reliable After this period and providing that a minimum of 4 satellites are detected the position is set This 1 hour position reliability process is initialised every time the board is switched on and is hold as long as a minimum of 4 satellites is continuously detected The EC20S must be fixed Manual The GPS receiver can provide reference information with only 3 satellites available The user is required to precisely enter the geographic position of the antenna into corresponding
32. he OROLIA group User s Manual 4 27 EPSILON CLOCK MODEL EC20S Spectracom Corporation 4 3 11 Software Upgrade Software upgrade is performed with this Upgrade Application page Two steps are necessary First Upload a New Release from the web client to the EC20S and then Activate New Release Before starting the upload of a new version select the file to be downloaded usually a tgz file provided by the manufacturer Click on the Upload button to proceed srecrracom Upgrade Application Currently installed software Application Label EC20S Version 01 00 Date 02 12 2008 17 58 46 Configuration Label EC20S CONFIG STANDARD Version 01 00 Date 02 12 2008 16 59 25 File upload You can upload an application archive a configuration archive or a mixed archive This can take up to 5 minutes File to upload Choisissez un fichier Aucun fichier choisi Upload File Designed by SPECTRACOM a company ofthe OROLIA group e Upload File First step of upgrade A tgz compressed file is sent to the EC20S and stored Manage uplodaded archive sample_update tgz install EC mi Delete C Dee e Install Second step of upgrade When clicking on Install button upgrading module is restarted Signal Distribution is not impacted e Delete When clicking on Delete button the last uploaded archive is deleted 4 28 User s Manual Spectra
33. ify the mode of IP address allocation static or DHCP and the static address as necessary If the EC20S is already DHCP configured and if no DHCP server is available you cannot connect a control PC to access EC20S network configuration pages It is then possible to reset the IP address and mode to the factory setting using the Set IP button in front of the product 3 4 Configure the EPSILON CLOCK MODEL EC20S The EC20S is configured through an Ethernet network with a web browser After boot sequence open a browser at the EC20S IP address and enter the setup parameters Enable GPS or External Synchronization source as a minimum During installation you may check the quality of the GPS reception on the Clock status web page The GPS status tables show the number and quality of received satellites The minimum number of received satellites should be four out of 12 For a standard configuration if no external reference is available disable the External Synchronization in the Time and Reference Setup page with priority level setting to disabled Depending on the available power sources enable or disable the Power Alarms in the Power Setup menu 3 2 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 4 Operation 4 1 General Information 4 1 1 Control of operating functions The EC20S may be controlled through a web interface Ethernet RJ45 with a remote PC 4 1 2 Network Configuration The IP addres
34. ightning or transient surge repairs or modifications not performed by Spectracom The GPS receiver is warranted for one year from date of shipment and subject to the exceptions listed above The power adapter if supplied is warranted for one year from date of shipment and subject to the exceptions listed above THE TIMEVIEW ANALOG CLOCKS ARE WARRANTED FOR ONE YEAR FROM DATE OF SHIPMENT AND SUBJECT TO THE EXCEPTIONS LISTED ABOVE THE TIMECODE READER GENERATORS ARE WARRANTED FOR ONE YEAR FROM DATE OF SHIPMENT AND SUBJECT TO THE EXCEPTIONS LISTED ABOVE THE WIRELESS CLOCK SYSTEM TRANSMITTERS AND OR TRANSCEIVERS AND CLOCKS ARE WARRANTED FOR TWO YEARS FROM DATE OF SHIPMENT AND SUBJECT TO THE EXCEPTIONS LISTED ABOVE THE EPSILON CLOCKS BOARDS AND SYNCHRONIZATION UNITS ARE WARRANTED FOR TWO YEARS FROM DATE OF SHIPMENT AND SUBJECT TO THE EXCEPTIONS LISTED ABOVE The Rubidium oscillator if supplied is warranted for two years from date of shipment and subject to the exceptions listed above All other items and pieces of equipment not specified above including the antenna unit antenna surge suppressor and antenna pre amplifier are warranted for 5 years subject to the exceptions listed above WARRANTY CLAIMS Spectracom s obligation under this warranty is limited to in factory service and repair at Spectracom s option of the product or the component thereof which is found to be defective If in Spectracom s judgment the defect
35. isabled OK Alarm Disabled Spectracom Corporation Status of AC power AC power on AC power off Power alarm not allowed by operator see Power setup page Status of DC power DC power on DC power off Power alarm not allowed by operator see Power setup page Synchronization Sources Alarms External Reference OK Alarm Disabled NMEA Validity OK Alarm Disabled Synchronization Alarms Phase Accuracy OK Alarm Frequency Accuracy OK Alarm Status of the external reference synchronization source Synchronization source is available Synchronization source is not available Synchronization source not allowed by operator Clock setup page Status of the NMEA Input NMEA message source is available NMEA message is not available NMEA message not allowed by operator Clock setup page Estimated phase accuracy has crossed the limit see Clock setup page during a holdover sequence Phase limit not exceeded Phase limit exceeded Estimated frequency accuracy has crossed the limit see Clock setup page during a holdover sequence Frequency limit not exceeded Frequency limit exceeded User s Manual Spectracom Corporation Distribution Alarms e Global 10 MHz output OK Alarm Squelched e Global 1PPS output OK Alarm Squelched Optional Distribution Alarms e IRIG Board OK Alarm Disabled
36. itude e GPS Altitude e Self Survey Pending n progress Done e Visible Satellites e D SNR NMEA Status e NMEA Longitude e NMEA Latitude e NMEA Altitude 4 14 The signal is delivered at the output The signal is not delivered at the output The signal is not delivered at the output The signal is not available in this EC20S revision Current longitude of the GPS antenna Current latitude of the GPS antenna Current altitude of the GPS antenna Not applicable in Manual and Mobile modes In Automatic mode the self survey phase allows the GPS receiver to average continuously the geographical position of the GPS antenna for a period of one hour to get a precise GPS antenna position The following values are then possible The calculation of precise GPS antenna position is not done The calculation of precise GPS antenna position is in progress The calculation of precise GPS antenna position is done Number of locked GPS channels out of a maximum of 12 Satellite number and SNR Signal over Noise Ratio of the 8 best satellites channels tracked by the GPS receiver Current longitude of the NMEA input Current latitude of the NMEA input Current altitude of the NMEA input User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 4 3 4 Password page A password is necessary to access the setup pages The default password is pwd It can be
37. ive condition in a Spectracom product is for a cause listed above for which Spectracom is not responsible Spectracom will make the repairs or replacement of components and charge its then current price which buyer agrees to pay Spectracom shall not have any warranty obligations if the procedure for warranty claims is not followed Users must notify Spectracom of the claim with full information as to the claimed defect Spectracom products shall not be returned unless a return authorization number is issued by Spectracom Spectracom products must be returned with the description of the claimed defect and identification of the individual to be contacted if additional information is needed Spectracom products must be returned properly packed with transportation charges prepaid Shipping expense Expenses incurred for shipping Spectracom products to and from Spectracom including international customs fees shall be paid for by the customer with the following exception For customers located within the United States any product repaired by Spectracom under a warranty repair will be shipped back to the customer at Spectracom s expense unless special faster delivery is requested by customer Spectracom highly recommends that prior to returning equipment for service work our technical support department be contacted to provide trouble shooting assistance while the equipment is still installed If equipment is returned without first c
38. l User s Manual 7 1 EPSILON CLOCK MODEL EC20S Spectracom Corporation 7 1 2 NMEA Message Input Connector connector SUB D9 Input signal characteristic required Data and port parameters ASCII 4800 bps 8 bits 1 stop bit no parity Protocol lt Message gt lt CR gt lt LF gt Format GPRMC hhmmss ss A IIII Il a yyyyy yy a x x x x ddmmyy x x a hh o RMC Recommended Minimum Specific GPS TRANSIT Data o hhmmss ss UTC of emitter position fix Must be date the last EXT_1PPS o A status of the emitter A OK V warning o Ill Latitude of emitter not used by the EPSILON CLOCK MODEL EC20S o a NorS North or South of emitter not used by the EPSILON CLOCK MODEL EC20S o yyyyy yy Longitude of emitter not used by the EPSILON CLOCK MODEL EC20S o a E or W East or West of emitter not used by the EPSILON CLOCK MODEL EC20S o XX not used by the EPSILON CLOCK MODEL EC20S o X X not used by the EPSILON CLOCK MODEL EC20S o ddmmyy UTC date o X X not used by the EPSILON CLOCK MODEL EC20S o a not used by the EPSILON CLOCK MODEL EC20S o hh Checksum NOTE When the status sent is V and or the checksum sent is incorrect the NMEA message is not used by the EPSILON CLOCK MODEL EC20S 7 2 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 7 1 3 NMEA Message Output Data and port parameters ASCII 4800 bps 8 bits 1 stop bit no parity Protocol lt Message gt lt CR gt lt LF gt Format GPRM
39. lable with remote control software 1 10 3 Redundancy Power supply redundancy between AC and DC converters If the AC Input power supply is present DC input is internally disconnected If AC input fails DC input switches over to supply the equipment 1 8 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 1 11 Terminology DHCP GPS OCXO Rb S A SFN TRAIM UTC 1PPS 1 PPS driver Holdover Reliability Frequency driver Reference input IERS MAC MIB NTP SNMP NMEA IRIG User s Manual Dynamic Host Configuration Protocol Global Positioning System Oven Controlled XTAL Crystal Oscillator Rubidium oscillator Selective Availability Single Frequency Network Time Receiver Autonomous Integrity Monitoring Universal Time Coordinated One Pulse Per Second Pulse signal obtained through division of the frequency driver If the reference input signal is lost the EPSILON CLOCK maintains the generation of information and of time and frequency signals Concerns the positioning mode of the antenna In automatic mode the EPSILON CLOCK calculates the position of the antenna and after testing the result imposes the reliable position on the internal GPS receiver The receiver therefore functions in GPS OD reception mode The EPSILON CLOCKO is synchronized by following at least one satellite Frequency signal generated by the built in oscillator Time and frequency source used by the EP
40. na 5VDC supply ALARMS SUBD 9 Dry contacts for alarms NMEA TIME message Output SUBD 9 RS232 for Time message output GROUND m Casing grounding User s Manual 1 7 EPSILON CLOCK MODEL EC20S Spectracom Corporation 1 8 Dimensions and Weight Width 19 441 mm without bracket Height 1 U 44 mm Depth 340 mm Weight lt 4 7 kg Compatibility 19 rack The EC20S unit is compatible with 19 racks and can be mounted with slides Screws to fix the slides on the equipment sides are provides with the equipment Use Slides Accuride part number DZ 2907 0020 Hub 559mm 1 9 Operating Environment Operating temperature With OCXO 5 to 60 With Rubidium Oscillator 5 to 50 Storage temperature 40 to 85 Relative humidity 95 non condensing 1 10 Power Supply 1 10 1 DC Power Supply Input Nominal DC input voltage conditions 20 to 72 Volts DC Maximum Total Power consumption lt 55W Protection against polarity reversal 48V and OV DC input wires are not ground referenced Protected by a PolySwitch fuse automatically rearmed Detection of power input presence on connector information available with remote control software threshold level of detection between 20 and 25 Volts 1 10 2 AC Power Supply Input Nominal AC input voltage 90 to 264 Volts AC 48 to 63 Hz On switch 2 fuses D1TD 1A 5x20 Detection of power input presence on AC DC converter information avai
41. ng Status Yes Generates a trap when the tracking status changes No No trap generated e Power Fault Yes Generates a trap when any enabled power source alarm is detected No No trap generated e Option Distribution IRIG Fault Yes Generates a trap when one of the IRIG Board output signals fails No No trap generated e Option Distribution STANAG Fault Yes Generates a trap when one of the STANAG Board output signals fails No No trap generated e Option Distribution 2MHz Fault Yes Generates a trap when one of the 2MHz Board output signals fails No No trap generated e 1PPS Output Fault Yes Generates a trap when one of the 1PPS output signal fails No No trap generated e 10 MHz Output Fault Yes Generates a trap when one of the 10 MHz output signal fails No No trap generated e Download MIB Link for downloading zipped MIB text file 4 20 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 4 3 7 Time amp Synchronization Setup page This page is used for setting time computation and display parameters synchronization source parameters and Distribution parameters D SPECTRACOM A SR e he 09 12 2008 14 24 00 U System Setup Time amp Synchronization Source Setup Time amp Synchronization Source Setup
42. nitoring alarm protected by password e Clock Status Summary of status and alarms of the EC20S e Tools Software Version Display of current version of software parts Software Upgrade Upgrading software protected by password Reboot Per module hardware reset protected by password Header time information is provided by the EC20S A letter is displayed near the time message according to the setting of the display mode and source reception GPS availability U UTC time reference G GPS time reference L UTC time corrected by programmed offset N No time reference no GPS information since start up M Manual reference time has been set manually in Time and Synchronization Setup menu 4 8 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 4 3 3 Clock Status page O SPECTRACOM Synchronizing Critical Operations 09 15 36 08 U Clock Status Global Status EC20S Status SFN Status On Synchronization Source GPS Oscillator Control Voltage 4 308 V Tracking Status Locked Synchronization Time 18415 Alarms GPS Alarms Synchronization Sources Alarms PS Locked Extemal Reference Disabled Antenna Status Powered NMEA Validity Disabled GPS Module Status ta Internal Alarms Synchronization Alarms Internal Oscillator Phase Accuracy Internal 1PPS Frequency Accuracy Power Supply
43. ontacting the support department and no problems are found during the repair work an evaluation fee may be charged EXCEPT FOR THE LIMITED WARRANTY STATED ABOVE SPECTRACOM DISCLAIMS ALL WARRANTIES OF ANY KIND WITH REGARD TO SPECTRACOM PRODUCTS OR OTHER MATERIALS PROVIDED BY SPECTRACOM INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Spectracom shall have no liability or responsibility to the original customer or any other party with respect to any liability loss or damage caused directly or indirectly by any Spectracom product material or software sold or provided by Spectracom replacement parts or units or services provided including but not limited to any interruption of service excess charges resulting from malfunctions of hardware or software loss of business or anticipatory profits resulting from the use or operation of the Spectracom product or software whatsoever or howsoever caused In no event shall Spectracom be liable for any direct indirect special or consequential damages whether the claims are grounded in contract tort including negligence or strict liability EXTENDED WARRANTY COVERAGE Extended warranties can be purchased for additional periods beyond the standard five year warranty for those products covered under five year warranty Contact Spectracom no later than the last year of the standard five year warranty for extended coverage www
44. oss POWER tr gt GPS Locked Search for Satellites Locked lt gt Status Locked on GPS Locked on GPS A SFN v Phase or M Frequency 7 OK Alarm Outputs AAA AAA Squelch n Disabled Outputs Vy Squelch On Auto gt gt Ten Shadow Time A synchronization source can miss 2 minutes before the product switch to another source 4 4 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 4 1 9 Source change sequence detail Following diagrams show the status of the EC20S product with GPS source loss POWER 4 E Esq A GPS K _ Locked Search for Satellites Ext A Ts ev Ref K Locked gt Status Locked on GPS Tracking Search Locked on Ext Ref lt Ty SFNA d On Phase or Frequency 7 OK Alarm Outputs 4 Squelch 7 On gt Disabled Outputs Jp Squelch On gt Auto User s Manual 4 5 EPSILON CLOCK MODEL EC20S Spectracom Corporation 4 1 10 Holdover sequence detail Following diagrams show the status of the EC20S product with GPS source loss POWER EEE GPS Locked Search fot Satellites Locked Status Locked on GPS Tracking Search Locked on GPS Thola gt SFNA On Off Phase or Frequency 7 OK ALARM T OK Alarm Outputs Squelch K On gt Disabled Outputs Squelch On Off On gt Auto Thoi
45. r month day year day of the year year Choice of reference time scale Universal time scale Time given by GPS almost equivalent to UTC UTC time corrected by a programmable offset An information letter is displayed after the time message on the header of the web page see Upper Task Bar and Page Header description e Offset for Local Time Leap Second eq 1 e Leap Second Date 31 03 30 06 30 09 31 12 e 1PPS Phase Offset 4 22 Allows computation of local time from UTC time Programs in advance the leap second correction hence ensuring it will be applied even in case of GPS loss Direction of the application Non leap second pending Positive leap second pending Negative leap second pending Programs in advance the leap second correction hence ensuring it will be applied even in case of GPS loss Date of application 31 03 30 06 30 09 31 12 Phase shift implemented on 1PPS output from 500ms to 4 500ms entered in ns User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S Synchronization parameters e Force Holdover Keep the oscillator control voltage at a fixed value even if a synchronization reference is available On Force holdover Off Normal slaving mode e Priority Level GPS Programs the priority of the GPS reference source Priority 1 Highest priority Priority 2 Medium priority Priority 3 Lowest priority Disable Disa
46. s of the EC20S can be assigned through DHCP protocol or manually The assignment mode is programmable through the web interface and reset with the Set IP button The assignment mode is saved when switching off 4 1 2 1 DHCP IP Assignment If DHCP mode is selected the address is assigned only by a DHCP server on the network If there is no DHCP server on the network the IP address can be reset to the 192 168 0 100 fixed factory setting with the Set IP button in order to connect a PC that is set accordingly 4 1 2 2 Web Interface IP Assignment When the unit is connected to a PC configuration is made in the corresponding System Setup gt NetworkSetup web page If DHCP is chosen the address is assigned at start up by a DHCP server on the network If no DHCP is chosen the address is entered manually in the IP address field 4 1 3 Clock Generation 4 1 3 1 Reference Sources and Selection Reference sources for oscillator tracking include 1PPS from the integrated GPS receiver and External 1PPS reference from BNC input Automatic selection of the source is made according to Enable Source Forcing Priority Configuration Parameters and Reference Source Alarm status User s Manual 4 1 EPSILON CLOCK MODEL EC20S Spectracom Corporation 4 1 3 2 Tracking algorithm The algorithm is a phase frequency locked loop type tracking algorithm The phase measurement filter uses Kalman computation The tracking process involves several states
47. spectracomcorp com www spectracom fr Spectracom Corporation 3 1 3 2 3 3 3 4 4 4 1 4 1 1 4 1 2 4 1 3 Table of Contents INTRODUCTION 02 tette ties Safety Precautions Safety during Adjustments Maintenance and Repair Inventory Inspection General Description Integrated Remote Control Interface Front and Rear Panels EC20S Front Panel a diles EC20S Back Panel Connectors sise see Dimensions and Weight Operating Environment Power Supply DE Power Supply MPUL ae AC Power supply Inputs aa Is ecundatiey tn vga glee Eee cam leas Adasen Aa Oy ganic ce Terminology TECHNICAL FEATURES lt a ini casa an deere am acest Timing Reference Generation and Characteristics ds AA Bremen 1PPS External Synchronization Input Phase Lock in at Powerup ae an TOMAZ OUEIpUL nee Mn ia RA a A dE SE Auxilliary Connector Signals Alarms RS RS Dee uc Network Connectivity Ethernet ITnterface oooooccccnocinoncccnononcnnonocanacoccnunoconcnononcaroccnanonoccnononanin cnn IP Address ASSIM A A tee alee Prot cols 2 UR Control PC for Web Interface Electromagnetic Compability Safety PUTTING THE EC20S INTO OPERATION 41 t reciente Preliminary Connections Powering Up Network Connection Configure the EPSILON CLOCK MODEL EC20S OPERATION see General Information Control of operating TUBClOne ai ERBE Network Configuration cenn iea A a ia OOOO a oa User s Manual EPSILON CLOCK MODE
48. ter 1 hour switches to the accurate timing mode The first step requires the reception of 4 satellites to compute the coordinates e Mobile The receiver expects the antenna to move permanently and evaluates coordinates continuously It is not then able to switch to the most accurate timing mode 4 2 User s Manual Spectracom Corporation 4 1 6 Equipment Start up At start up after initialization EPSILON CLOCK MODEL EC20S the software retrieves the last configuration and starts programmable hardware Distributed signals are generated with a degraded performance first and with required performance after oscillator locking 4 1 7 Start up sequence detail Following diagrams show the Start up status of the EC20S product POWER t gt GPS Search for Satellites Locked ae i setae gt On gt Squelch ff gt dm ems SFN A Off Outputs Disabled Outputs Squelch Fo gt Auto Ts Search for Satellites Time 5 minutes typical depending on GPS signal reception quality Tin Initialization Time Start of EC20S software 2 minutes typical Twam Warm Up Time 5 minutes typical depending on oscillator Tis Tracking Search Time Depending on synchronization source quality User s Manual 4 3 EPSILON CLOCK MODEL EC20S Spectracom Corporation 4 1 8 Short loss of source sequence detail Following diagrams show the status of the EC20S product with GPS source l
49. vel on the antenna input a disconnected antenna a shorted antenna no PPS generation inside the GPS receiver and no management link between the unit and the GPS receiver After checking the antenna installation if the receiver is still in a failure status the unit should be replaced 6 4 2 Customer Support Information In case of failures please contact Spectracom Customer Service Customer service is available by telephone at 33 0 1 64 53 39 80 France or 1 585 321 5800 United States 6 2 User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 7 Appendix 7 1 NMEA Connector 7 1 1 Pin Out Type of connector SUB D9 Female Fm AC AL OO OOOO Oo a y O1 o Ix The pin out of the connector is described in the following table NC 6 NMEA RS485 A NMEA OUT 7 NMEA RS485 B NMEA IN 8 OTHER RS485 A GND 9 OTHER RS485 B GND The inputs outputs of the SUB D connector are defined in the following table NC Not Connected GND Ground NMEA IN Receive line input of the NMEA message RS232 compatible level NMEA OUT Transmit line output of the NMEA message RS232 compatible level NMEA RS485 A NMEA RS485 B Transmit line output of the NMEA message RS485 compatible level OTHER RS485 A OTHER RS485 B Receive line input of the NMEA message RS485 compatible leve
50. work on event trigger 2 4 Control PC for Web Interface OS Windows or Linux Internet Browser Tested with Firefox 1 5 and Microsoft IE6 User s Manual 2 5 EPSILON CLOCK MODEL EC20S Spectracom Corporation 2 5 Electromagnetic Compability Complies with the requirements of the standards EN 300386 V1 3 1 ed 2001 Electromagnetic compatibility and radio spectrum matters ERM telecommunication network equipment electromagnetic compatibility EMC requirements EN 61000 6 1 ed 2001 Generic standards Immunity for residential commercial and light industrial environments EN 55022 ed 1998 A2 ed 2003 Class A Information technology equipment Radio disturbance characteristics Limits and methods of measurement 2 6 Safety EN 60950 Safety of Information Technology Equipment User s Manual Spectracom Corporation EPSILON CLOCK MODEL EC20S 3 Putting the EC20S into Operation The EC20S can be installed in a rack or used as is 3 1 Preliminary Connections Before starting the EPSILON CLOCK MODEL EC20S perform the following tasks e Leave free space of a few centimeters under the unit in order to facilitate natural air flow from bottom to top of the EPSILON CLOCK MODEL EC20S e Connecting cables for signals and power supply should be secured to locks provided for this purpose e Connect the GPS antenna refer to GPS Antenna Installation e Connect a ground lead from the earth pin on the EC20S back pan

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