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Spectra EC22S User Manual

Epsilonclock dual gps receiver
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EPSILONCLOCK
MODEL EC22S
DUAL GPS RECEIVER
USER'S MANUAL
95 Methodist Hill Drive
Rochester, NY 14623
Phone: US +1.585.321.5800
Fax: US +1.585.321.5219
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 400011-C
Manual Revision C
20 May 2008

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  • Page 1 EPSILONCLOCK MODEL EC22S DUAL GPS RECEIVER USER’S MANUAL 95 Methodist Hill Drive Rochester, NY 14623 Phone: US +1.585.321.5800 Fax: US +1.585.321.5219 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 400011-C Manual Revision C...
  • Page 2 Copyright © 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.
  • Page 3 SPECTRACOM LIMITED WARRANTY LIMITED WARRANTY Spectracom shall not have any warranty obligations if the procedure for warranty claims is not followed. Users must Spectracom warrants each new product manufactured and notify Spectracom of the claim with full information as to the sold by it to be free from defects in software, material, claimed defect.
  • Page 4 extended coverage.
  • Page 5 Spectracom Corporation 8194B, 8195B, 8197B...

  • Page 7: Table Of Contents

    Spectracom Corporation EPSILON CLOCK MODEL EC22S Table of Contents Table of Contents Table of Contents Table of Contents INTRODUCTION ....................1-1 Safety Precautions Safety during Adjustments, Maintenance, and Repair Inventory Inspection General Description Integrated Remote Control Interface Front and Rear Panels 1.7.1...
  • Page 8 EPSILON CLOCK MODEL EC22S Spectracom Corporation 2.3.4 Protocols Control PC for Web Interface PUTTING THE EC22S INTO OPERATION ............3-1 Left and Right Clock Modules Powering Up Network Connection Configure the EPSILON CLOCK Model EC22S OPERATION...................... 4-1 General Information 4.1.1 Control of operating functions 4.1.2...
  • Page 9 Spectracom Corporation EPSILON CLOCK MODEL EC22S 5.2.12 Software Upgrade 5-22 5.2.13 Reboot 5-23 SNMP CONTROL ....................6-1 MIB Content SNMP TRAPS MAINTENANCE....................7-1 Periodic Verification and Calibration Updating the Software Version Spare Parts Troubleshooting 7.4.1 Searching for Alarm Origin 7.4.2 What Can Be Done APPENDIX......................
  • Page 10 EPSILON CLOCK MODEL EC22S Spectracom Corporation EPSILON CLOCK User’s Manual...

  • Page 11: Introduction

    This manual contains information and warnings that must be understood and followed by the customer to ensure reliable operation and long service life. It is applicable to EPSILON CLOCK Model EC22S with software versions 1.04b or higher. 1.1 Safety Precautions...

  • Page 12: Inventory

    The Spectracom ECC22S is well dedicated to digital broadcast applications using SFN (Single Frequency Network) mode. The EC22S gives the high reliability required at any step of the network, from SFN adapters to high- and medium-power transmitters and gap fillers.

  • Page 13: Integrated Remote Control Interface

    Integrated Remote Control Interface Integrated Remote Control Interface The EC22S contains an Ethernet IP interface so that it can be fully controlled from a remote location. The EC22S includes its own HTTP web server so that a simple navigator is sufficient to configure and retrieve status from the equipment.

  • Page 14: Front And Rear Panels

    EPSILON CLOCK MODEL EC22S Spectracom Corporation 1.7 Front and Rear Panels Front and Rear Panels Front and Rear Panels Front and Rear Panels Figure 1 - 1.EC22S front panel and back panel. EPSILON CLOCK User’s Manual...

  • Page 15: Ec22S Front Panel Leds

    Spectracom Corporation EPSILON CLOCK MODEL EC22S Functions of the EC22S include: Clock generation (including GPS reception, internal oscillator, power converters) on the two • Clock modules Clock switching for right/left selection of distributed Clock • Clock distribution and monitoring •...

  • Page 16: Ec22S Back Panel Connectors

    On normal operation, all LEDs should be green. Only available reference input sources should be enabled. Only available power alarms should be enabled. 1.7.2 EC22S Back Panel Connectors AC POWER (90 to 230 VAC) Schaffner AC power entry with integrated fuse...

  • Page 17: Dimensions And Weight

    Spectracom Corporation EPSILON CLOCK MODEL EC22S 1.8 Dimensions Dimensions Dimensions and Weight Dimensions and Weight and Weight and Weight Width: 19" (441 mm), without bracket Height: 2 U (88 mm). Depth: 400 mm + 40 mm (front panel handles). Weight: <6.5 kg.

  • Page 18: Terminology

    EPSILON CLOCK MODEL EC22S Spectracom Corporation There is one AC converter and one DC converter on each Clock module. The power supply for distribution and management is a combination of sources from both modules. 1.11 1.11 1.11 1.11 Terminology Terminology...

  • Page 19: Technical Features

    Spectracom Corporation EPSILON CLOCK MODEL EC22S 2 2 2 2 Technical Features Technical Features Technical Features Technical Features 2.1 Timing Reference Generation and Characteristics Timing Reference Generation and Characteristics Timing Reference Generation and Characteristics Timing Reference Generation and Characteristics The following characteristics are minimum values. Enhanced performance options are available.

  • Page 20: Phase Lock-In At Power-Up

    EPSILON CLOCK MODEL EC22S Spectracom Corporation 2.1.4 Phase Lock-in at Power-up 2.1.4.1 Warming-up Warm-up time for the local oscillator before tracking search: 10 minutes A subsequent fast tracking search brings the oscillator frequency close to the reference input signal frequency 2.1.4.2...

  • Page 21: Auxilliary Connector Signals

    No reference (when EC22S is not yet locked on GPS) UTC reference GPS reference Local time Manual ( only authorised in “Force holdover” mode or when the EC22S is not lock on a reference source) Output period: 1 message per second.

  • Page 22: Network Connectivity

    2.3.3 IP Address Exclusion The IP address sub-set: 10.253.253.0 cannot be assigned either manually or through DHCP to the EC22S interface because it will interfere with the mini IP network inside EC22S. 2.3.4 Protocols Transfer Control Protocol and Internet Protocol (TCP/IP), IP address setting: DHCP protocol.

  • Page 23: Putting The Ec22S Into Operation

    • this purpose. Connect the GPS antenna (refer to GPS Antenna Installation). • Connect a ground lead from the earth pin on the EC22S back panel to the frame of the • rack. 3.1 Left and Right Clock Modules Left and Right Clock Modules...

  • Page 24: Network Connection

    If the EC22S is already DHCP configured and if no DHCP server is available, you cannot connect a PC to access EC22S network configuration pages. It is then possible to reset the IP address and mode to the factory setting using the "Configuration>Reset IP address" menu on the front panel LCD/touch pad.

  • Page 25: Operation

    General Information 4.1.1 Control of operating functions 4.1.1.1 EC22S Control The EC22S may be controlled through a web interface (Ethernet/RJ45) with a remote PC or through the keypad/LCD display for some complementary configuration. 4.1.1.2 Front Panel LCD Display and Keypad Control The front panel is managed by the PC board for local control.

  • Page 26: Redundancy

    Clock module must be "on" to power the module. In the same manner, the DC plug located on the same side must be connected to power the corresponding module. On one Clock module, either AC or DC power or both may be used to supply the EC22S. Priority is given to AC input.

  • Page 27: Clock Switchover

    Degraded state: Hidden state in which tracking was accurate and lost its reference input. • Before declaring urgent alarm on the EC22S, 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.

  • Page 28: Equipment Start-Up

    4.1.9 Clock Module Hot Plugging A Clock module can be unplugged and inserted while the EC22S distributes frequency and 1PPS signals. At least one Clock module is needed to supply power and generate a Clock signal.

  • Page 29: Screens

    Spectracom Corporation EPSILON CLOCK MODEL EC22S To modify a programmable field, use the direction keys to reach that field, then click "enter", then select “content” with the left/right key. To go back to the main menu screen, bring the cursor to the “Back” field and click "enter".
  • Page 30 EPSILON CLOCK MODEL EC22S Spectracom Corporation 4.2.2.3 Network Status screen IP: 172.16.207.33 GW: 172.16.207.254 MK: 255.0.0.0 [Back] The screen displays the currently allocated IP address, coming from a DHCP server or as set in static parameters. 4.2.2.4 Setup screen -Distribution mode-...
  • Page 31 This function may be useful in case the equipment is in DHCP mode and connected to a network with no DHCP server. Executing "Reset" programs the EC22S to the default 192.168.0.100 IP address. You can then connect a PC with a crossed RJ45 cable and modify the IP address using the web page (System setup>Network setup).

  • Page 32: Alarm-Time Connector

    EPSILON CLOCK MODEL EC22S Spectracom Corporation 4.2.2.8 Halt screen Switch off Left power and extract Left Clock [Back] NOTE: Halting the machine before shutting it down helps prevent damage to the unit and provides for smooth operation. Spectracom strongly recommends always halting the unit before shutdown.

  • Page 33: General Description

    General Description General Description When connecting to the EC22S IP address with a web browser (HTTP protocol), the user can check the EC22S status, modify setup parameters, and perform software updates. Status web pages are free to access for any user.

  • Page 34: Upper Task Bar And Page Header

    Software upgrade: Upgrading software iv. Reboot: Per module hardware reset Header time information is provided by the EC22S. A letter is displayed near the time message, according to the setting of the display mode and source reception (GPS) availability:...

  • Page 35: Clock Status Page

    Spectracom Corporation EPSILON CLOCK MODEL EC22S 5.2.3 Clock Status page EPSILON CLOCK User’s Manual...
  • Page 36 Maintenance is required. c. Alarm (Red): EC22S does not distribute a valid signal (GPS input loss, any other important failure). ‘SFN status for Master Clock’ (Gray): Indicates wether Master Clock is in SFN mode or not a.
  • Page 37 Ranges from 0V to 8V b. Generates an Internal Oscillator alarm when the value reaches 0V or 8V, meaning that the EC22S is no longer able to drive the Internal Oscillator. ‘Tracking Status’: Slaving algorithm status a. Warming up: The EC22S internal oscillator is warming up b.
  • Page 38 EPSILON CLOCK MODEL EC22S Spectracom Corporation d. Holdover: The slaving has been suspended because of loss of synchronization conditions e. Forced Holdover: The slaving has been suspended on user request Alarms ‘GPS Lock’: Performance of the 1PPS signal of the GPS receiver...
  • Page 39 Synchronization source is not available c. Disabled (Gray): Synchronization source not allowed by operator (Clock setup page) or not available in this EC22S receiver version ‘Optional reference’: State of the optional synchronization source a. OK (Green): Synchronization source is available b.
  • Page 40 EPSILON CLOCK MODEL EC22S Spectracom Corporation ‘Frequency’: Monitoring of the frequency output signals delivered by the EC22S a. OK (Green): The signal is delivered at all outputs b. Alarm (Red): The signal is not delivered at one of the outputs c.

  • Page 41: Admin Password Page

    Spectracom Corporation EPSILON CLOCK MODEL EC22S 5.2.4 Admin Password page A password is necessary to access the setup pages. The default password is “pwd”. It can be modifiied in the Network Setup page. 5.2.5 Network Setup page This page allows the user to modify the Network connection parameters.
  • Page 42 4) Change password: Field for password modification. This password is required when accessing setup pages When set in Use DHCP mode, if the EC22S 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.

  • Page 43: Snmp Setup Page

    Spectracom Corporation EPSILON CLOCK MODEL EC22S 5.2.6 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.
  • Page 44 7) Global Traps Enable: If "Yes", traps are sent according to individual enabling; If "No", no traps are sent. 8) Clock Fault: a. Yes: Generates a trap when the EC22S goes on default (according to "Global Status") b. No: No trap generated.
  • Page 45 Spectracom Corporation EPSILON CLOCK MODEL EC22S 16) Power Fault: a. Yes: Generates a trap when any enabled power source alarm is detected. b. No: No trap generated 17) Clock Mater/Slave: a. Yes: Generates a trap when left/right Master Clock switchover is performed.

  • Page 46: Time & Reference Setup Page

    EPSILON CLOCK MODEL EC22S Spectracom Corporation 5.2.7 Time & Reference Setup page This page is used for setting time computation and display parameters, synchronization source parameters, and Distribution parameters. 5-14 EPSILON CLOCK User’s Manual...
  • Page 47 Parameters are set identically on both Master and Slave Clock modules: 1) Date and Time and "Set Manual Time " button: Time manual setting allowed only when the EC22S is in forced holdover mode or when the EC22S has not yet been synchronized on a GPS reference source.
  • Page 48 EPSILON CLOCK MODEL EC22S Spectracom Corporation 7) Leap second: Programs in advance the leap second correction, hence ensuring it will be applied even in case of GPS loss a. Leap second : Direction of the application i. 0: non leap second pending ii.
  • Page 49 Priority 1: Lowest priority d. Disable: Disable the source; this source is not supervised 13) Force a source as input: Force the EC22S to be synchronized on a reference source even if other sources with a highest priority are available, for debug purposes: a.

  • Page 50: Gps Setup Page

    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 EC22S must be fixed. 5-18...

  • Page 51: Power Setup Page

    Mobile: The GPS receiver computes its position continuously so that the EC22S (with GPS antenna) can be moved. 3) Latitude, Longitude, Altitude: Data defining the geographic position of the GPS antenna applied in time processing while in manual mode.

  • Page 52: Events Logging

    EPSILON CLOCK MODEL EC22S Spectracom Corporation 5.2.10 Events logging This page displays the recording of events (alarms, warning, information) detected inside the EC22S. Alarm and warning refer to status displayed on the Clock Status web page. Information relates to configuration or state change.
  • Page 53 Spectracom Corporation EPSILON CLOCK MODEL EC22S Module: Origin of event. EC22S origin relates to general event; Clock RIGHT or LEFT relates to specific Clock event. 5.2.11 Versions This page displays the version number of key elements of EC22S software and firmware.

  • Page 54: Software Upgrade

    Firmware refers to FPGA components content. Two steps are necessary: First Upload a New Release from the web client to the EC22S, 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) .

  • Page 55: Reboot

    Upload New Release: First step of upgrade. A tgz compressed file is sent to the • EC22S and stored. Last uploaded release is shown in the Pending version field. Activate New Release: Second step of upgrade. Pending version is the last •...

  • Page 57: Snmp Control

    Status information, similar to the status displayed on the web page, that can be • read (GET procedure) EC22S Base Unit + Clock Status : Global status(GET) Power supply AC L/R (GET) Power supply DC L/R (GET) Outputs Freq (GET)

  • Page 58: Snmp Traps

    EPSILON CLOCK MODEL EC22S Spectracom Corporation CLOCK L/R External 1pps Reference (Trap) CLOCK L/R Optional Reference(Trap) CLOCK L/R Internal 1pps (Trap) CLOCK L/R Internal Oscillator (Trap) CLOCK L/R Phase Accuracy (Trap) CLOCK L/R Frequency Accuracy (Trap) Power supply AC L/R (Trap)

  • Page 59: Maintenance

    Periodic Verification and Calibration Periodic Verification and Calibration Periodic Verification and Calibration The EC22S is fully automatic functioning and self-calibrated. It does not require maintenance for a period of 10 years. 7.2 Updating the Software Version Updating the Software Version...
  • Page 60 Then, in case of hardware failure, the user must determine if the failure comes from a Clock module or from some other component in the EC22S. A failed Clock module can be replaced while the equipment is running.

  • Page 61: What Can Be Done

    Spectracom Corporation EPSILON CLOCK MODEL EC22S 7.4.2 What Can Be Done 7.4.2.1 Clock Module Exchange Procedure When a diagnostic shows a Clock module failure, it is possible, in the field, to exchange a failed Clock module for a new one: With the web interface ("Time &...

  • Page 63: Pin-Out Of Ec22S Connectors

    Spectracom Corporation EPSILON CLOCK MODEL EC22S 8 8 8 8 Appendix Appendix Appendix Appendix 8.1 Pin Pin- - - - Out Out of EC22S connectors of EC22S connectors of EC22S connectors of EC22S connectors 8.1.1 RJ45 - Ethernet Signal Description...

  • Page 64: Bnc - External Ref Input

    - Choose the antenna and cable type 8.2.1 GPS Antenna Location Choose a location with an unobstructed view of the sky. The EC22S will determine its location automatically once locked to the appropriate number of satellites. The minimum number of tracked GPS satellites is four. A vertical observation cone with an open view...

  • Page 65: Gain Calculation

    Spectracom Corporation EPSILON CLOCK MODEL EC22S of the sky, at an angle higher than or equal to 65° (optimum at 85° ), is recommended per the following example: Figure 8 - 1. GPS Antenna Locations. NOTE: The open view angles are given according to the criteria of a complete GPS constellation of 24 satellites, evenly distributed i around the Earth.
  • Page 66 EPSILON CLOCK MODEL EC22S Spectracom Corporation For full detailed operation description download application note TF2 : “GPS antenna installation guide” from our web site (http://www.spectracomcorp.com). EPSILON CLOCK User’s Manual...

  • Page 67: Revision History

    REVISION HISTORY Revision Description Level Number ---- Previous Temex Sync issues. First iteration of this Spectracom documentation, converted from ---- Temex Sync documentation.
  • Page 68 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...

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