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Spectracom EPSILON EC1S User Manual

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EPSILON CLOCK
MODEL EC1S
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 14002-D0
Manual Revision D0
09 June 2008

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  • Page 1 MODEL EC1S 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 14002-D0 Manual Revision D0 09 June 2008...
  • 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 (including defective. If in Spectracom’s judgment the defective condition negligence), or strict liability. in a Spectracom product is for a cause listed above for which EXTENDED WARRANTY COVERAGE Spectracom is not responsible, Spectracom will make the...

  • Page 5: Table Of Contents

    Spectracom Corporation EPSILON CLOCK MODEL EC1S Table of Contents Table of Contents Table of Table of Contents Contents INTRODUCTION ......................1-1 Basic Configuration Standard Features Optional Functions Oscillators Inventory Inspection Terminology Mechanical Characteristics (Dimensions in mm) INSTALLATION ....................... 2-1 Preparing for Use...
  • Page 6 EPSILON CLOCK MODEL EC1S Spectracom Corporation 5.3.10 Display 5.3.11 Alarms limits Time distribution on the remote control interface Command or query syntax FLAT ANGLE BRACKETS....................6-1 Front of the Cabinet Inside the Cabinet INTERCONNECTION SAS CABLES KIT................ 7-1 Composition Procedure...

  • Page 7: Introduction

    Spectracom Corporation EPSILON CLOCK MODEL EC1S 1 1 1 1 Introduction Introduction Introduction Introduction The EPSILON CLOCK MODEL EC1S generates and distributes a highly accurate and stable frequency source disciplined using GPS input. The clock has autonomous control of GPS system integrity features (TRAIM) and rejects defective satellites.

  • Page 8: Basic Configuration

    EPSILON CLOCK MODEL EC1S Spectracom Corporation 1.1 Basic Configuration Basic Configuration Basic Configuration Basic Configuration This document is applicable to the EPSILON CLOCK® Model EC1S. In its basic configuration, the EPSILON CLOCK® Series EC1S is equipped with: • 1 x GPS antenna input (TNC) •...

  • Page 9: Oscillators

    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. 1.6 Inspe Inspection...

  • Page 10: Terminology

    EPSILON CLOCK MODEL EC1S Spectracom Corporation 1.7 Terminology Terminology Terminology Terminology Auto Survey In automatic mode, the EPSILON CLOCK MODEL EC1S calculates the position of the antenna and, after testing the result, imposes the position on the internal GPS receiver. The receiver therefore functions in GPS 0D reception mode: The EPSILON CLOCK MODEL EC1S is synchronized by tracking at least one satellite.

  • Page 11: Mechanical Characteristics (Dimensions In Mm)

    Spectracom Corporation EPSILON CLOCK MODEL EC1S 1.8 Mechanical Characteristics (Dimensions in mm) Mechanical Characteristics (Dimensions in mm) Mechanical Characteristics (Dimensions in mm) Mechanical Characteristics (Dimensions in mm) Front side EPSILON CLOCK AUX. 1 AUX. 2 T E K E L E C...

  • Page 13: Installation

    The EPSILON CLOCK® is designed to be used with the supplied GPS antenna ONLY. Using another antenna may cause significant damage to the unit and will void your Spectracom warranty. • Plug the antenna cable into the TNC “Antenna” connector. To ensure the correct reception of the GPS signal, the overall system of antenna/cable/protection requires a gain between 15 and 30 dB, with optimum reception around 24 dB.

  • Page 14: Connections Quality

    Before disconnecting the unit from the main power supply, always switch it off. Failure to do may cause damage that voids your Spectracom warranty. 2.3 Connections Quality Connections Quality Connections Quality Connections Quality Great care must be taken in setting up the GPS Antenna and its connections.

  • Page 15: Power Connection

    Spectracom Corporation EPSILON CLOCK MODEL EC1S An improper installation could result in problems ranging from random, intermittent loss of signal to complete loss of GPS reference. The most common outcome is the inability to discipline the GPS reference correctly. 2.4 Power Connection...

  • Page 16: Power Characteristics

    This interface supports direct connections to the RS-232 serial port on a computer. EPSILWIN32 is Windows software, trademarked to this company, which is designed to monitor and command the EC1S with an EBO OEM profile. Contact Spectracom for more information. •...

  • Page 17: Starting The Clock

    If the failure occurs after the start-up sequence, both LEDs are “off”. In this state, the Time Of Day message is not distributed and the clock will not be synchronized to the GPS source. If this occurs, contact Spectracom. Under normal operating conditions, the EPSILON CLOCK MODEL EC1S is synchronized to UTC (GPS) about 25 minutes after it is switched on.

  • Page 18: Turning Off The Clock

    EPSILON CLOCK MODEL EC1S Spectracom Corporation In this state, the EPSILON CLOCK MODEL EC1S continuously delivers the following outputs slaved to the UTC (GPS) reference: • The 1PPS output and the associated Time Of Day message output • The frequency output 2.7 Turning Off the Clock...

  • Page 19: Features

    Spectracom Corporation EPSILON CLOCK MODEL EC1S 3 3 3 3 Features Features Features Features 3.1 Frequency Output Frequency Output Frequency Output Frequency Output Connectors: 10MHz SMA Female Pin Settings Center contact: Sine-wave signal Outer contact: Ground Signal characteristics: EC1S-LC EC1S-SO...

  • Page 20: 1Pps Output

    EPSILON CLOCK MODEL EC1S Spectracom Corporation 3.2 1PPS Output 1PPS Output 1PPS Output 1PPS Output Connector: SMA Female Pin Settings Center contact: Periodic pulse Outer contact: Electrical ground of the “GND” pins. Signal characteristics: EC1S-LC EC1S-SO EC1S-DO Signal waveform High-level >...

  • Page 21: Tod Output

    Spectracom Corporation EPSILON CLOCK MODEL EC1S TOD Output TOD Output TOD Output TOD Output Time Of Day message output: Output: ASCII, 9600 bps, 8 bits, 1 stop bit, odd parity. Protocole: <Message> Format*: Day/Month/Year Hour: Minute: Second Source e.g.: 20/03/1996_21:02:05U...

  • Page 22: Alarm Output

    EPSILON CLOCK MODEL EC1S Spectracom Corporation 3.5 Alarm Output Alarm Output Alarm Output Alarm Output If required, the polarity of the relay can be reversed. Type: Relay contact Closed in a case of hardware or software failure (Standard configuration) Open in a case of hardware or software failure (On requirement)

  • Page 23: Gps Antenna Input/Output

    Spectracom Corporation EPSILON CLOCK MODEL EC1S 3.7 GPS Antenna Input/Out GPS Antenna Input/Out GPS Antenna Input/Out GPS Antenna Input/Output Connector: ANTENNA TNC female Pin Settings Center contact: GPS Signal Input (L1) Output power supply of the active antenna: Voltage: Current: 80 mA max.
  • Page 24 EPSILON CLOCK MODEL EC1S Spectracom Corporation EPSILON CLOCK User’s Manual...

  • Page 25: Sdh/E1 Option

    Spectracom Corporation EPSILON CLOCK MODEL EC1S 4 4 4 4 SDH/E1 Option SDH/E1 Option SDH/E1 Option SDH/E1 Option When installed, this option provides: • SDH / E1 synchronization for SSU functionality such as ITU G.811 GPS PRC when locked on GPS •...
  • Page 26 EPSILON CLOCK MODEL EC1S Spectracom Corporation Connector: AUX1 SMA Female Pin Settings Center contact: Sine-wave signal Outer contact : Ground Signal characteristics: - Signal level: G.703 § 13 / 75 Ω unbalanced. - Input jitter & wander tolerances: Compliant with G811 and ESTI EN 300 462-4/6 recommendations.

  • Page 27: Remote Control Interface

    Spectracom Corporation EPSILON CLOCK MODEL EC1S 5 5 5 5 Remote Control Interface Remote Control Interface Remote Control Interface Remote Control Interface 5.1 General General General General The remote control interface allows remote configuration and remote status reporting of the clock.

  • Page 28: Commands Description

    EPSILON CLOCK MODEL EC1S Spectracom Corporation • The contents of sections <ID> and <CNT> are identical to those sent by the user • The content of the <DATA > section: o Is identical to that sent by the user if the message was a Command o Contains the information supplied by the clock, if the message was a Query The acknowledgement to a Command is an exact copy of the message sent.

  • Page 29: Gps Positioning

    Spectracom Corporation EPSILON CLOCK MODEL EC1S The manual mode allows the user to instantaneously force the GPS receiver to function in one satellite mode. The user is required to enter the date and the geographic position of the antenna. The Mobile mode is useful when the clock is moved while functioning. This command prevents the GPS receiver from switching to the 1 satellite mode.

  • Page 30: Force Holdover Mode

    EPSILON CLOCK MODEL EC1S Spectracom Corporation reliable time reference by programming in advance the leap second correction, ensuring it will be applied even in the case of loss of GPS signal input. This command does not apply to the other time references.

  • Page 31: Time Distribution On The Remote Control Interface

    Spectracom Corporation EPSILON CLOCK MODEL EC1S 5.4 Time distribution on the remote control interface Time distribution on the remote control interface Time distribution on the remote control interface Time distribution on the remote control interface The time message is transmitted to the remote control interface. The format and the output TOD are selected by the "display"...

  • Page 32: Command Or Query Syntax

    EPSILON CLOCK MODEL EC1S Spectracom Corporation 5.5 Command or query syntax Command or query syntax Command or query syntax Command or query syntax Designation Command query ID Number of Command bytes validity conditions TOD output setup Status Emission period of the time message on the...
  • Page 33 Spectracom Corporation EPSILON CLOCK MODEL EC1S Name Identifier Bytes Byte Encode Settings Description Type Query Command 0 to 3 1 long b 0 = 1 Clock is synchronized to the reference input (GPS) Status Clock is not synchronized (the clock is in hold over mode after the loss of the reference b 0 = 0 input signal).
  • Page 34 EPSILON CLOCK MODEL EC1S Spectracom Corporation Name Identifier Bytes Byte Encode Settings Description Type Query Command 5 to 20 Odd bytes (5 to 19) For each byte, the number of the satellite being tracked is set on bits b 0 to b 6 . The integers locking to satellite indicator is given by bit b 7 (b 7 =0 ;...
  • Page 35 Spectracom Corporation EPSILON CLOCK MODEL EC1S Name Identifier Bytes Byte Encode Settings Description Type Query Command 1 char Antenna positioning mode: Automatic positioning Antenna positioning mode: Manual Antenna positioning mode: Mobile 1 to 4 1 long -324,000,000 ... 324,000,000 Latitude (ms) in WGS 84 Datum Ellipsoid.
  • Page 36 EPSILON CLOCK MODEL EC1S Spectracom Corporation Name Identifier Bytes Byte Encode Settings Description Type Query Command Version 0 to 3 1 long Reserved 1 char 0 ... 255 Software version. 1 char 0 ... 255 Update version number. 6 to 9...

  • Page 37: Flat Angle Brackets

    Spectracom Corporation EPSILON CLOCK MODEL EC1S 6 6 6 6 Flat Angle Brackets Flat Angle Brackets Flat Angle Brackets Flat Angle Brackets The Epsilon clock EC1S accepts two flat angle brackets for installation inside a 19 inch cabinet. Two methods of installation are possible: •...

  • Page 38: Inside The Cabinet

    EPSILON CLOCK MODEL EC1S Spectracom Corporation 6.2 Inside the Cabinet Inside the Cabinet Inside the Cabinet Inside the Cabinet TOP SIDE 19 inch cabinet EC1S GPS cable 10MHz cable 1pps cable Left flat angle Right flat angle bracket bracket RIGHT SIDE...

  • Page 39: Composition

    Spectracom Corporation EPSILON CLOCK MODEL EC1S 7 7 7 7 Interconnection SAS Cables Kit Interconnection SAS Cables Kit Interconnection SAS Cables Kit Interconnection SAS Cables Kit This section describes how to interface the εSAS with two EC1S units, using the interconnection SAS cables kit.
  • Page 40 EPSILON CLOCK MODEL EC1S Spectracom Corporation NOTE: The SubD 9-pin female connector on this cable provides direct access on the RS232 remote control interface of the EC1S when this cable is connected on J1. EPSILON CLOCK User’s Manual...
  • Page 41 Spectracom Corporation EPSILON CLOCK MODEL EC1S EPSILON CLOCK User’s Manual...
  • Page 42 REVISION HISTORY Revision Description Level Number 01/12/03 Creation / First draft 01/04/04 Power connection Phase noise / Mechanical characteristics 15/09/04 SDH/E1 option, interconnection SAS cables kit First iteration of this Spectracom documentation, converted from 09/06/08 previous documentation.

  • Page 43: Spectracom Corporation

    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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