Page 1 SSU-2000e Synchronization Supply Unit and the SDU-2000e Synchronization Distribution Unit User’s Guide Revision E – October 2006 Part Number 12713140-002-2...
Page 2 2300 Orchard Parkway San Jose, CA 95131-1017 U.S.A. http://www.symmetricom.com Copyright © 1999–2006 Symmetricom, Inc. All rights reserved. Printed in U.S.A. All product names, service marks, trademarks, and registered trademarks used in this document are the property of their respective owners.
Page 3 SSU-2000e Main Shelf (Chassis) ........
Page 4 SSU-2000e Turn-Up Procedures ........
Page 5 SSU-2000e Status LED Indicators ........90...
Page 6 Configuration Data ..........153 SSU-2000e User’s Guide...
Page 7 Performance Specifications........196 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide...
Page 8 SSU-2000e Configuration Chart ........
Page 9 Clock Input Connector Groups ........34 SSU-2000e Input Connector Scheme ........35 1-10 SSU-2000e Power Connections .
Page 10 SSU-2000e Main Shelf, Front View ........
Page 11 SSU-2000e Readiness Checklist ........
Page 12 SSU-2000e System Components ........229...
Page 13 Structure of This Guide Conventions Used in This Guide Warnings, Cautions, Recommendations, and Notes Related Documents and Information Where to Find Answers to Product and Document Questions What’s New in this Guide 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide...
Page 14: Purpose Of This Guide
How to Use This Guide Purpose of This Guide The SSU-2000e User’s Guide describes the procedures for unpacking, installing, using, maintaining, and troubleshooting the Symmetricom SSU-2000e Synchronization Supply Unit (SSU-2000e). Who Should Read This Guide Chapter 1, Product Overview, is written for non-technical audiences who need general information about the product.
Page 15: Conventions Used In This Guide
Chapter 6, Clock Module Provides detailed information on the Communications module and Reference Data the various Clock modules available for use in the SSU-2000e. Chapter 7, Input Module Contains detailed information on the Input modules available for Reference Data use in the SSU-2000e.
Page 16: Warnings, Cautions, Recommendations, And Notes
Cautions are also used to indicate a long-term health hazard. SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 17: Related Documents And Information
Related Documents and Information Other helpful documents and software tools are listed below. See your Symmetricom representative or sales office for a complete list of available documentation. SSU-2000e Technical Reference (12713140-00x-2) SynCraft management software...
Page 18: Where To Find Answers To Product And Document Questions
Where to Find Answers to Product and Document Questions For additional information about the products described in this guide, please contact your Symmetricom representative or your local sales office. You can also contact us on the web at www.symmetricom.com. What’s New in this Guide Revision E of this guide contains the following new information: Information in the previous version’s appendices are moved to a new document,...
Page 19: Chapter 1 Product Overview
Chapter 1 Product Overview This chapter describes the SSU-2000e and provides a theory of operation for the unit. The SDU-2000e expansion shelf is also introduced and described. In This Chapter Overview Typical System Configurations System Architecture System Components Communications Protocol...
Page 20: Overview
1-1, provides a Stratum 1 network synchronization solution for central office (CO), end office, customer premises equipment (CPE) sites, controlled equipment vaults (CEV) and telecommunications and data communications network operations. The SSU-2000e family of products consists of: SSU-2000e Synchronization Supply Unit...
Page 21: Typical System Configurations
Supply Unit, and Timing Signal Generator. The SSU-2000e allows for the integration of a variety of synchronization reference schemes including GPS and land line DS1/E1. As a slave clock, the SSU-2000e meets or exceeds performance requirements outlined in Telcordia Technologies (formerly Bellcore) ITU-T G.812 Stratum 2 and ETSI Type II Transit Node clocks.
Page 22: Timing Signal Generator (Tsg) Configuration
24 external signals, such as DS1, E1, Composite Clock, and various clock frequencies. Time-of-day functionality is available through an Ethernet port employing NTP. Figure 1-3. SSU-2000e Configured as a Primary Reference Source SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 23: Ssu-2000E Configured As A Monitor-Only System
(within the performance limits set by an operator), the SSU-2000e frequency-locks to the signal on a priority basis. System holdover and filtering performance is dependent on the quality of oscillators used in the SSU-2000e’s internal clock modules (Stratum 2E or Stratum 3E).
Page 24: Input Section
Chapter 1 Product Overview System Architecture Figure 1-5. Block Diagram of the SSU-2000e As indicated in Figure 1-5, the SSU-2000e consists of four major sections: Input section Clock section Output section Communications section Input Section The input section consists of one or more (maximum of three) Input modules that are connected to reference signals and are tested for signal integrity.
Page 25 Wander is reported in terms of Maximum Time Interval Error (MTIE) and Time Deviation (TDEV). The data is then stored for use in the SSU-2000e and reported through the Communications module. You can install one or two GPS input modules that use the satellite-based Global Positioning System signals as a synchronization reference.
Page 26 Priority setting; if all inputs have the same Priority level, then the input with the highest PQL (quality level, SSM) is used. If you select PQL mode, the SSU-2000e selects the input reference with the highest assigned PQL level or associated SSM; if all inputs have the same PQL/SSM value, then the input with the highest Priority levels is used.
Page 27: Output Section
SSM. If a valid SSM is not received, the module uses the user-assigned SSM. Setting an Input Alarm Strategy You can provision the SSU-2000e to elevate input alarms to the next higher level after a specified amount of time. You can also specify that an alarm clears automatically after a specified period of time without the alarm condition.
Page 28: Clock Section
The Communications module is installed in slot A2 and provides an interface between the user and the SSU-2000e system. This interface allows the user to display and control much of the activity in the SSU-2000e system and within the optional SDU-2000e expansion system. The Communications module supports three serial ports and one Ethernet port, and allows communication over each of them independently in one of several possible modes (ICS, TL1, SNMP, or packet).
Page 29: Alarms And Events
System Architecture When the Communications module is installed, it performs an initial software verification test to verify operation. If the module is being installed in the SSU-2000e with power already applied and with other modules installed, the Communications module reads the configuration of the modules in the SSU-2000e and the modules in all installed SDU-2000e expansion shelves.
Page 30 The REPORT mode option is used to report alarm indications only. An ALARM command is available in the SSU-2000e firmware that allows a user to view the current status of alarm indications on the unit and set alarm delay intervals and activation levels.
Page 31: System Components
Module Assignments All SSU-2000e modules are equipped with card ejectors and plug in from the front of the chassis. Each module is secured in the chassis with captive fasteners. The...
Page 32: Ssu-2000E Module Chassis Slot Assignments
Input modules and Output modules. Slot A12 is reserved for the B Clock module. Main Shelf Connections All connections to and from the SSU-2000e are made on the upper front panel of the SSU-2000e main shelf, as shown in Figure 1-7.
Page 33: Ssu-2000E Upper Front Panel Connections
Figure 1-7. SSU-2000e Upper Front Panel Connections The SSU-2000e main shelf contains the following connection features: Three groups of Clock input connectors – each group of nine Clock input connectors (9-pin, Micro-D female) is associated with a specific Input module slot.
Page 34: Clock Input Connector Groups
SDU Backup Clock (D-Clock) connector – supplies a backup clock to any attached expansion shelf. Clock Input Connectors The upper half of the SSU-2000e contains three groups of nine Clock input connectors, as shown in Figure 1-8. Each group of nine connectors includes three monitor connectors, three load connectors and three input connectors.
Page 35: Ssu-2000E Input Connector Scheme
SSU-2000e Input Connector Scheme Output Clock Connectors The SSU-2000e connector panel contains three groups of 20 summed output clock connectors. The groups are labeled OUTPUT GROUP 1 that are installed in A6 and A7, OUTPUT GROUP 2 that are installed in A8 and A9, and OUTPUT GROUP 3 that are installed in A10 and A11.
Page 36: Clock Output Connector To Output Module Relationship
OUTPUT-6 Alarm Closure Contacts The SSU-2000e shelf has two filtered DA15P male connectors that are electrically tied to the alarm relay contacts on the Communications module. One connector (labeled J1) is designated the local alarm connector and the second connector (labeled J2) is the remote alarm connector.
Page 37: Local And Remote Alarm Connector Pin Assignments
The main shelf accepts redundant –48/60 VDC power inputs from external supplies and makes these inputs available to the modules through the motherboard connectors. There is no power ON/OFF switch on the SSU-2000e because power to the shelf is controlled by external power supplies. 12713140-002-2 Revision E – October 2006...
Page 38: Ssu-2000E Power Connections
System Components Figure 1-10. SSU-2000e Power Connections All power supplies for the SSU-2000e are implemented on the individual modules which increases system availability by eliminating a single point of failure in the power supply area. On each plug-in module, diodes combine the two power sources and provide protection from reversal of the power connections on the shelf (+ and –...
Page 39: Serial Port Connector Pins
System Components Main Shelf Communications Ports The SSU-2000e main shelf contains four communication ports including: Two EIA-232 communication ports (Port A, J4; Port B, J5) on the upper front panel One shielded RJ-45 ethernet connector J3 (10baseT) on the upper front panel for...
Page 40: Ssu-2000E Family Of Modules
RX+ (Positive Side of Received Data) RX– (Negative Side of Received Data) Not Used 4, 5, 7, 8 SSU-2000e Family of Modules The SSU-2000e family of modules includes the following: Stratum 2E Clock Module Stratum 3E Clock Module Type 1 Clock Module Communications Module...
Page 41: Clock And Communications Modules
All SSU-2000e modules have an integrated CPU with firmware and are software configurable. Each module slot also has three pins connected together on its assigned hybrid DIN connector which permits the system to detect when a particular module is removed.
Page 42: Input Modules
The GPS Input module is a one-port card that can only be installed in the SSU-2000e main shelf. The module is used to correct the frequency of the oscillator on the Clock module. It monitors and reports the status and performance of the module and radio signals that it receives.
Page 43: Output Modules
Output Modules E1 Output Module The E1 Output module uses one of three 4 kHz clocks from the SSU-2000e main shelf backplane to generate a phase-locked signal of 2.048 MHz. If the unit is inserted into an SDU-2000e expansion shelf, a fourth 4 kHz clock (D clock) is available.
Page 44: Communications Protocol
2048 kHz Output Module The 2048 kHz Output module plugs into selected input/output slots in the SSU-2000e main shelf or one of the output slots on the expansion shelf. The module generates and monitors 20 independent 2048 kHz signals that are referenced to a selected clock module.
Page 45: Software Versions
GPS receiver or local timing source. The SSU-2000e implements the NTP v.3 (RFC 1305) version. It can run as a server application and a client application. In addition, a broadcast mode may be implemented as either a server or client.
Page 46: Basic System Load
ICS also provides command sets to support all operation, administration, maintenance, and provisioning tasks required to maintain and control an SSU-2000e system from a terminal connected to one of the serial ports. ICS commands are designed in a more readable interface for users, and includes an instructional help facility.
Page 47: Overview Of Ssu-2000E Operation
After initial installation and configuration is completed, the SSU-2000e is capable of unattended operation. After power-up, where the external power supplies are turned on so that they supply power to the main shelf, the SSU-2000e performs a self-diagnostic test routine and properly initializes the hardware. Any active Alarms are time tagged and reported as Events.
Page 48: Indicators And Controls
(Figure 1-12) is an expansion chassis that attaches to an SSU-2000e Synchronization Supply Unit and is used to generate additional output signals. The expansion chassis uses the framing and synchronization features of the SSU-2000e main chassis to drive an array of Output modules.
Page 49: Sdu-2000E Synchronization Distribution Unit
International, European and North American applications as a primary reference source (PRS) and slave clock (SSU/TSG). The SSU-2000e, which drives the SDU-2000e expansion chassis, allows the integration of a variety of synchronization reference schemes including GPS and land line 2048 kbit/s (E1)/DS1 network sources.
Page 50: Sdu-2000E Block Diagram
-48/60 VDC powered telecommunication transmission equipment installed in telecommunication centers with inside telecom signal connections. The farthest expansion chassis may be located up to 61 meters from the SSU-2000e main shelf. Figure 1-13 shows a simplified functional block diagram of the SDU-2000e expansion chassis.
Page 51: Functional Overview
1.544 Mbps (DS1) or 2048 kbit/s (E1) using one of three 4 KHz clocks supplied by the clock oscillators in the SSU-2000e main shelf. The phase locked clock signal is buffered and summed with a companion Output module in redundant pairs to generate a set of 20 independent output clock signals for distribution to large networks.
Page 52: Sdu-2000E Expansion Chassis Components
SDU-2000e Synchronization Distribution Unit Clock Source The clock inputs for the first SDU-2000e expansion chassis in an SSU-2000e system are supplied by the A and B Clock modules in the main chassis. A multi-pin connector on the front panel of the SSU-2000e (labeled J8 EXPANSION) provides the reference signals from the main shelf Clock modules for use by the SDU-2000e expansion shelves.
Page 53: Setting The Expansion Shelf Address
The SDU Backup Clock terminals, labeled J104 and J106, are 9 Pin D-type female connectors that are connected in parallel. Connector J104 is used to connect to a source unit, such as the SSU-2000e or to connector J106 on another expansion shelf. Connector J106 drives an additional SDU-2000e shelf, or it is terminated using an SDU backup clock terminator.
Page 54: Sdu Module Features
All modules are individually fused to protect the system in case of a short circuit on any one module The SSU-2000e and the SDU-2000e share common Output modules All modules have front panel LED status indicators All modules are equipped with ejector tabs for ease of installation and removal...
Page 55: Revision E – October 2006 Ssu-2000E User's Guide
Figure 1-16. SDU-2000e Connection Features Expansion Connectors Up to four SDU-2000e expansion shelves can be attached to the SSU-2000e main shelf. The two terminators (SSU Expansion Terminator and SDU Backup Clock Terminator) must be moved from the SSU-2000e chassis (connectors J8 and J9) to connectors J105 and J106, respectively, on the last expansion chassis in the daisy chain.
Page 56: Controls And Indicators
All modules installed in the SDU-2000e expansion shelf contain LED status indicators for displaying status. Any faults from the installed modules are sent to the SSU-2000e Communications module through the buffer modules; the appropriate alarm relays are set and communication status is sent to alert users of any events that exceed specified alarm thresholds.
Page 57: Chapter 2 Installing The Ssu-2000E
Chapter 2 Installing the SSU-2000e This chapter provides guidelines and procedures for installing the SSU-2000e Synchronization Supply Unit and the SDU-2000e Expansion shelf, and for bringing the unit on-line after installing it. In This Chapter Unpacking and Inspecting the Shelf...
Page 58: Unpacking And Inspecting The Shelf
Chapter 2 Installing the SSU-2000e Unpacking and Inspecting the Shelf Unpacking and Inspecting the Shelf The SSU-2000e is packaged to protect it from normal shock, vibration, and handling damage. To avoid damaging the unprotected unit, caution is advised during unpacking and installation.
Page 59: Installation Tools And Materials
All cables connected to the SSU-2000e should be shielded with metal connector shells. The connectors on the front of the chassis are shielded, with the shields connected to frame ground.
Page 60: Ventilation Considerations
Rack Mounting the SSU-2000e The SSU-2000e shelf is passive and contains all the necessary interconnecting signals to support a combination of plug-in modules. For example, the SSU-2000e may be configured to contain two Clock modules, a Communications module, three Input modules, and six Output modules configured with three pairs of summed outputs.
Page 61 Each module is secured in the chassis with captive screws. The SSU-2000e may be mounted in either a 300 mm or 600 mm deep equipment cabinet. The SSU-2000e chassis occupies 500 mm vertically, 229 mm depth, and a width of 431.8 mm.
Page 62: Making Ground And Power Connections
Use appropriate screws for attaching the mounting bracket. Ensure that both brackets are attached at equal distances from the front of the unit. 2. Mount the SSU-2000e to the front of the rack rails with the appropriate number of screws and washers for the rack.
Page 63: Making Communications Connections
SSU-2000e chassis is not protected from reverse polarity. To connect the power input, perform the following steps: 1. Remove the power supply fuse(s) that feed the SSU-2000e. You install the fuses after you make all power, signal, and alarm connections.
Page 64: Making Eia-232 Serial Port Connections
Chapter 2 Installing the SSU-2000e Making Communications Connections Table 2-1. Communications Port Assignments Port # Function Protocol Serial Ports (EIA-232) A (J4) This port is user selectable as either an ICS or a TL1 ICS (Default), TL1 interface. The port defaults to ICS upon initialization...
Page 65: Changing Communications Settings
3. Connect a PC or laptop with terminal emulation software (such as Microsoft HyperTerminal) or ASCII terminal to the port. 4. Log in to the SSU-2000e at user level 2 or higher. 5. Use the COMM command to change the communications settings for the port.
Page 66: Making Communications Module Connections
Not Used 4, 5, 7, 8 Making Communications Module Connections The Communications module serves as the user interface to the SSU-2000e. This module’s command interface supports three EIA-232-C serial connections and one Ethernet interface for communication with the SSU-2000e. Figure 2-5 shows an example of connecting to the local port on the front of the communication module.
Page 67: Making Signal Connections
Making Signal Connections Making Input Connections The SSU-2000e Main shelf has nine sets of reference clock input connections on DE9P male connectors for connecting input telecom signals. There are three connectors in each set; each set is arranged vertically and labeled top to bottom...
Page 68: Clock Input Connector Pinout
Chapter 2 Installing the SSU-2000e Making Signal Connections Figure 2-6. Clock Input Connector Pinout Figure 2-7 shows the non-payload E1 (2048 kbit/s) and DS1 (1544 kbit/s) input termination. Figure 2-7. Non-Payload E1 and DS1 Input Termination SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 69: Through Payload E1 And Ds1 Input Termination
Chapter 2 Installing the SSU-2000e Making Signal Connections Figure 2-8 shows the through payload E1 and DS1 input termination. Figure 2-8. Through Payload E1 and DS1 Input Termination Each connector is associated with a specific input plug-in module slot. Table 2-4 describes the relationship between the connectors and the Input module slot connectors.
Page 70: Making Output Connections
Chapter 2 Installing the SSU-2000e Making Signal Connections Making Output Connections The SSU-2000e main shelf has three groups of summed clock output connections on DE9P male connectors for connecting output telecom signals, see Figure 2-9. There are twenty connectors in each group for a total of sixty output connections.
Page 71: Making Alarm Connections
Figure 2-10. SSU Expansion Terminator (J8) Figure 2-11. SSU Backup Clock Terminator (J9) Side and Front View Making Alarm Connections The SSU-2000e Shelf has two filtered DA15P male connectors for local and remote alarm contact closure connections, as shown in Figure 2-12.
Page 72: Alarm Contact Closures And Pin Assignments
Chapter 2 Installing the SSU-2000e Making Alarm Connections Figure 2-12. Alarm Contact Closures and Pin Assignments Alarm contact pin assignments are listed in Table 2-8. Table 2-6. Alarm Contact Pin Assignments Signal MINOR – Normally Open Contact MINOR – Wiper Contact MINOR –...
Page 73: Connecting Antennas
GPS Antenna Kit. Handling Modules The SSU-2000e main shelf has twelve plug-in module slots. The module slots are numbered from left to right looking at the front of the shelf, A1 through A12. Each module slot has a specific address as listed in Table 2-7.
Page 74 Clock Module B 1A12 Caution: To avoid equipment damage due to poor ventilation and EMI considerations, each slot in the SSU-2000e must be filled. Filler panels are available from Symmetricom for unpopulated slots. When handling the modules, observe the following precautions: Use proper static control precautions when handling modules.
Page 75: Installing A Module
Chapter 2 Installing the SSU-2000e Handling Modules Installing a Module The following procedure is common for all modules in the SSU-2000e and SDU-2000e. Note: Modules can be removed and installed while system power is applied without damage to the modules and without affecting system operation, unless otherwise indicated.
Page 76: Disabling A Module
Chapter 2 Installing the SSU-2000e Handling Modules ICS command: Type , then press Enter. CONFIG 1A3 DISABLE TL1 command: DISC-MODULE::S1A3:123; 4. Loosen the captive screws located at the top and bottom of the module front panel. 5. Pull up on the top extractor and down on the bottom extractor to unseat the module from the connector on the backplane.
Page 77: Removing Modules
Chapter 2 Installing the SSU-2000e Handling Modules 1. Connect to the SSU-2000e using one of the methods described in Establishing a Connection With the SSU-2000e, on page 90. The system prompts for a user name. 2. Log in to the system using your user name and password.
Page 78: Installing The Sdu-2000E
RTRV-INV:::123; Installing the SDU-2000e This section provides guidelines and procedures for installing and cabling the SDU-2000e expansion chassis to the SSU-2000e main chassis. Before proceeding with the SDU-2000e installation, ensure that the procedures in Preliminary Procedures, on page 58, have been performed.
Page 79: Making Ground Connections
Chapter 2 Installing the SSU-2000e Installing the SDU-2000e 4. If you are not connecting additional Expansion shelves, verify that the Bus Termination Assembly is inserted into the last SDU Interface (J105) and last SDU Backup Clock (J106) of the main SDU-2000e shelf, see Figure 2-14.
Page 80: Connecting The Main Shelf
Connecting the Main Shelf The SDU-2000e Expansion Chassis has interface connections on the front panel for connecting to an SSU-2000e Synchronous Supply Unit. Connections include the SDU Interface (J103 and J105) and the SDU Backup Clock Terminal (J104 and J106).
Page 81: Setting The Shelf Address
SDU BACKUP CLK. They are connected in parallel. If the SDU is first in the daisy chain, J104 is used to connect to a source unit (SSU-2000e) and J106 is used to connect to an additional SDU-2000e shelf.
Page 82: Connecting Sdu Clock Outputs
Chapter 2 Installing the SSU-2000e Installing the SDU-2000e Figure 2-16. Shelf Address Selector Connecting SDU Clock Outputs The SDU-2000e Shelf has five groups of summed clock output connections on DE9P male connectors for connecting output telecom signals. There are twenty connectors in each group for a total of 100 outputs.
Page 83: Installing Sdu Modules
Chapter 2 Installing the SSU-2000e Installing the SDU-2000e Table 2-9. Output Module Slot to Connector Relationship Slot Label Plug-in Module Output Connector (Module Port) Group (Name) Slot Reference Description OUTPUT-1 J1 (1) through J20 (20) OUTPUT-2 OUTPUT-3 J21 (1) through J40 (20)
Page 84: Installation Checklist
4. Measure between the ground and chassis and verify that no voltage exists. 5. If an SDU-2000e Expansion chassis is not being installed, ensure that the connectors J8 and J9 to the SSU-2000e are connected to a proper terminator. 6. Connect office alarms to the REMOTE and LOCAL terminals with 1.024 mm wire.
Page 85: Ssu-2000E Turn-Up Procedures
Chapter 2 Installing the SSU-2000e SSU-2000e Turn-Up Procedures 11.Verify that all modules are receiving power and generating regulated DC outputs by checking that their POWER indicators (LEDs) are lit, see Normal System Indications During Turn-Up, on page 87. 12.To ensure that both power inputs are valid, verify that the green POWER indicator on the front of the Communications module is on.
Page 86: Sdu-2000E Turn-Up Procedures
Chapter 2 Installing the SSU-2000e SDU-2000e Turn-Up Procedures Clock Module 3E – The POWER LED turns green when power is applied to the unit and stays green. STATUS LED blinks green and amber for approximately 10 to 15 seconds and then stays green. The SELECTED LED turns green on the selected clock module after the ACQUIRE LED turns green.
Page 87: Normal System Indications During Turn-Up
This completes the turn-up procedures. See Chapter 3, Provisioning and Operating SSU-2000e, for instructions on connecting to the SSU-2000e and assigning a system administrator and additional users (system is password protected). Then refer to Chapter 4, Commissioning the...
Page 88: Ssu-2000E User's Guide 12713140-002-2 Revision E – October
Chapter 2 Installing the SSU-2000e After Turn-Up SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 89 Chapter 3 Provisioning and Operating the SSU-2000e This chapter provides operating instructions and software provisioning procedures for the SSU-2000e system. In This Chapter Controls and Indicators Establishing a Connection With the SSU-2000e Overview of the SSU-2000e Security System Adding An Administrator User...
Page 90: Controls And Indicators
PC and the DCE position is for connection to a modem. Reset (RST) switch on the Communications module. Establishing a Connection With the SSU-2000e You can connect to the SSU-2000e using either a serial connection or an Ethernet connection. To connect via a serial port, see Communicating by Serial...
Page 91: Communicating By Serial Port
2000 This port is designated for TL1 only Communicating by Serial Port Three EIA-232-C ports are available on the SSU-2000e. Attach a PC with terminal emulation software to one of the ports as shown in Figure 3-1 (this example shows a connection to the local port on the front of the Communications module).
Page 92: Communicating By Ethernet
Ethernet port. This section describes how to configure the Ethernet port and then connect to the SSU-2000e using the Ethernet port. When you connect to the SSU-2000e via Ethernet port 2000 (decimal) using a Telnet-type application, the session opens in TL1 mode. Up to four sessions (users) can be connected to port 2000 at one time.
Page 93: Overview Of The Ssu-2000E Security System
Making Ethernet Connections, on page 65 for details. 2. Telnet from your PC to the IP address assigned to the SSU-2000e. 3. Type your user name and press the Enter key. If you are not assigned as a user in the system, contact the System Administrator for your SSU-2000e.
Page 94: Firmware Requirements For Security Features
TL1 command RTRV-INV, or the ICS command CONFIG. Japan Composite Clock The SSU-2000e system software allows you to set up a list of users with one of five access levels; each level has an increasing level of access to system functions and commands.
Page 95: Adding An Administrator User
Perform the following steps to add an Administrator-level user to the system. 1. Connect a computer to the SSU-2000e using the procedure in Communicating by Serial Port, on page 91.
Page 96: Adding Users
Only an Administrator-level user can add new users to the SSU-2000e user list. You can use ICS or TL1 commands. Using ICS Commands 1. Connect a computer to an ICS port on the SSU-2000e and log in using an Administrator-level user name and password, as described in Logging In to the SSU-2000e, on page 102.
Page 97 ALIVE DAVID1 ALIVE SSU_2000e-> Using TL1 Commands 1. Connect a computer to port 2000 on the SSU-2000e and log in using an Administrator-level user name and password, as described in Logging In to the SSU-2000e, on page 102. 2. Type to add a user named SET-USER:::123::ADD,FRANK1,ABC123!,1;...
Page 98: Setting Security Parameters
– Setting a Temporary Password – Enabling, Disabling, and Unlocking Users Using ICS Commands 1. Connect a computer to a serial port on the SSU-2000e and log in using an Administrator-level user name and password, as described in Logging In to the SSU-2000e, on page 102.
Page 99 Chapter 3 Provisioning and Operating the SSU-2000e Setting Security Parameters 4. Type and press Enter to set the password to expire in 30 SECURITY AGING 30 days. 5. Type then press Enter to display the last 10 entries in the SECURITY LOG 10 Security log.
Page 100 6. Type the user name, then press Enter. The system unlocks the user. Using TL1 Commands 1. Connect a computer to port 2000 on the SSU-2000e and log in using an Administrator-level user name and password, as described in Logging In to the SSU-2000e, on page 102.
Page 101 An Administrator-level user can enable or disable a user from accessing the SSU-2000e without removing the user name from the user table. If a user exceeds the number of failed attempts to log in, then the user name is locked for a period of time.
Page 102: Logging In To The Ssu-2000E
Setting Security Parameters Logging In to the SSU-2000e Using ICS Commands 1. Connect a computer to a serial port on the SSU-2000e using the procedure in Establishing a Connection With the SSU-2000e, on page 90. A prompt to enter a username appears.
Page 103: Logging In With An Expired Password
ICS or TL1 commands, depending on the port you use. Using ICS Commands 1. Connect a computer to a serial port on the SSU-2000e using the procedure in Establishing a Connection With the SSU-2000e, on page 90. A prompt to enter a username appears.
Page 104 Chapter 3 Provisioning and Operating the SSU-2000e Setting Security Parameters Using TL1 Commands 1. Connect a computer to port 2000 on the SSU-2000e using the procedure in Establishing a Connection With the SSU-2000e, on page 90. 2. Press the ; key to ensure you have a connection. With an active connection, the...
Page 105: Logging Off Of The Ssu-2000E
Chapter 3 Provisioning and Operating the SSU-2000e Initial Provisioning Logging Off of the SSU-2000e Use one of the following commands to log off of the SSU-2000e: Using ICS commands Type and press Enter. Using TL1 commands CANC-USER:::123; Initial Provisioning After you have established communications with the SSU-2000e, you must provision the unit so it can track the input signals and start generating outputs.
Page 106: Adding Or Enabling A Module
, then press Enter. CLK AR ON TL1 command: SET-CLK-AR:::123::ON; 4. Assign a name, if desired, to the SSU-2000e. You can assign a of up to [name] 20 characters, starting with a letter; the name is returned as the responses from the unit.
Page 107: Disabling A Module
Use this command to temporarily disable a module without removing it from the system. The following example procedure disables the module in shelf 1, slot 12. 1. Log into the SSU-2000e using the procedure in Logging In to the SSU-2000e, on page 102.
Page 108: Provisioning Gps Input Modules
This section describes how to enable GPS Input modules, if they are installed. You must enable each module and assign a priority level to each module. You can install GPS Input modules only in slot 3 and slot 5 of the main SSU-2000e shelf. 1. Log into the SSU-2000e using the procedure in...
Page 109: Provisioning Other Input Modules
DS1, E1, or Composite Clock. You must enable and provision each input port as appropriate for the input signal. You can install these Input modules in any slot in the main SSU-2000e shelf. 1. Log into the SSU-2000e using the procedure in Logging In to the SSU-2000e, on page 102.
Page 110 8. Provision the Synchronization Status Message (SSM) for each input port to On or Off. When set to On, the SSU-2000e reads and interprets the SQL on the reference. If the reference does not include an SSM, the SQL is defined as STU.
Page 111: Provisioning Output Modules
This section describes how to enable and provision Output modules, such as DS1, E1, or Composite Clock. You must enable and provision each output port as appropriate. You can install Output modules in any I/O slot in the main SSU-2000e shelf and in the SDU-2000e Expansion Shelf.
Page 112: Saving The Provisioning Setup
Initial Provisioning 3. Provision the Output module as appropriate. ICS command: Refer to the OUTPUT command description in the SSU-2000e Technical Reference for details on all command options. TL1 command: Refer to the SET-PRMTR-OUT commands for the various Output modules in the SSU-2000e Technical Reference.
Page 113: Checking Alarm Status
The SSU-2000e is shipped from the factory with all required operational software. The factory default (basic) configuration often does not require further configuration. Refer to the SSU-2000e Technical Reference for a list of the factory default settings and the default Priority Quality Level (PQL) values.
Page 114: Restoring Factory Defaults
Logging In to the SSU-2000e, on page 102. 2. Use the ICS or TL1 commands described in the SSU-2000e Technical Reference to configure the system. Recommendation: Do not perform any command whose function you do not understand. This could result in system improper provisioning of the network.
Page 115: Backing Up And Restoring Configurations
This section describes how to back up the configuration files in the SSU-2000e using ICS and TL1 commands. Using ICS Commands 1. Connect a computer to an ICS port on the SSU-2000e and log in using an Administrator-level user name and password, as described in Logging In to the SSU-2000e, on page 102.
Page 116: Restoring The Configuration
This section describes how to restore the configuration files in the SSU-2000e using ICS and TL1 commands. Using ICS Commands 1. Connect a computer to an ICS port on the SSU-2000e and log in using an Administrator-level user name and password, as described in Logging In to the SSU-2000e, on page 102.
Page 117: Chapter 4 Commissioning The Ssu-2000E
Chapter 4 Commissioning the SSU-2000e The commissioning tests for the SSU-2000e system are checklist-based operational tests performed by field engineers at the installation site after completing the installation, system turn-up, and provisioning to verify that the system is correctly installed and configured and is operating properly. After performing these tests, the system is ready to be placed in service.
Page 118: Readiness To Test Checklist
Task Required for System Readiness Checked The SSU-2000e is installed in the rack with a minimum of 76 mm clearance between the bottom of the lowest shelf and the floor, or from other equipment in the rack. The SSU-2000e main shelf has minimum of 25.4 mm clearance between the top of the shelf and an adjacent shelf.
Page 119: Equipment Requirements
If an Ethernet connection to a network has been installed, use the following procedure to test the connection. 1. Telnet from the PC to the IP address assigned to the SSU-2000e system. 2. Log in by typing your assigned “username” and “password” and press Enter.
Page 120: Testing The Eia-232 Ports
Chapter 4 Commissioning the SSU-2000e Commissioning Tests Testing the EIA-232 Ports To test the EIA-232 port A: 1. Connect the PC or terminal to EIA-232 Port A as described in Establishing a Connection With the SSU-2000e, on page 90. 2. Type and press Enter.
Page 121: Testing The Major Alarms
Chapter 4 Commissioning the SSU-2000e Commissioning Tests Testing the Major Alarms To test the Major alarm relay closures and software: 1. Set the Power A alarm level to MAJOR: ICS command: ALARM 1A02 02 MAJOR TL1 command: SET-PRMTR-ALARM::S1A2::02:MAJOR; 2. Remove Power A input by removing A-bus fuse (or fuse that supplies Power A).
Page 122: Testing The Reference Signals And Selection
Chapter 4 Commissioning the SSU-2000e Commissioning Tests 7. Verify that the alarm clears, is reported and logged. 8. Enter the command to restore Power A to the original alarm level. Testing the Reference Signals and Selection To test the reference signals and selection: 1.
Page 123: Testing The Output Section
Chapter 4 Commissioning the SSU-2000e Commissioning Tests The PQL should be the level the clock is supplying to the Output modules, and depends on the reference input when in lock mode. The frequency offset is dependent on the clock type, typically less than 2 x 10...
Page 124: Commissioning Test Data Sheet
Chapter 4 Commissioning the SSU-2000e Commissioning Test Data Sheet Commissioning Test Data Sheet Complete the following test data sheet as an indicator of operational readiness of the SSU-2000e. Table 4-2. Commissioning Test Data Sheet - SSU Test Pass Fail Ethernet communications...
Page 125: Readiness To Test Checklist
External power supplies (-48/60 VDC inputs) are connected to the A and B Power input connectors (J101 and J102) on each installed SDU-2000e expansion chassis Power-up has been performed on the SSU-2000e and SDU-2000e system Equipment Requirements The following equipment is required to perform the commissioning tests:...
Page 126: Commissioning Tests
Enter to verify that an alarm is reported to the EVENTS SSU-2000e system. An alarm should be logged into the event log at this time. 4. Replace the A-BUS connector to restore POWER A to the unit. 5. Verify that the alarm clears, and that it is reported and logged into the event log.
Page 127: Commissioning Test Data Sheet
Chapter 4 Commissioning the SSU-2000e Commissioning the SDU 2000e 1. Connect one of the system outputs and the PRS signal to the test equipment to monitor the stability and accuracy. This test should be allowed to run for 24 hours to collect sufficient data to verify the system output meets specifications.
Page 128 Chapter 4 Commissioning the SSU-2000e Commissioning the SDU 2000e 128 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 129: Chapter 5 Maintenance And Troubleshooting
This chapter provides preventive and corrective maintenance procedures, troubleshooting procedures, and equipment re-ordering/return procedures for the SSU-2000e system. In This Chapter Responding to Alarms Preventive Maintenance Corrective Maintenance Troubleshooting Re-ordering Information Contacting Technical Support 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 129...
Page 130: Responding To Alarms
Caution: To avoid damage to the system, under no circumstances should the interior chassis of the SSU-2000e be allowed to come in contact with water. Caution: To avoid damage to the system, never attempt to vacuum the interior of the SSU-2000e.
Page 131: Corrective Maintenance
Chapter 5 Maintenance and Troubleshooting Corrective Maintenance Corrective Maintenance The SSU-2000e and SDU-2000e have a modular design; field service is limited to replacing the FRUs (field replaceable units) as identified in Table 5-1 Table 5-2. This table also outlines possible component problems and corrective action. Refer...
Page 132: Ssu Corrective Action Table
Table 5-2. SDU Corrective Action Table Component Corrective Action Part Number Motherboard or Main Contact Symmetricom Global Services. 25413141-000-0 Chassis Fault Defective Cable Replace defective cable. 060-10003-10-2 (1 m cable; other lengths available 132 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 133: Troubleshooting
RS422 Output Module 23413287-000-0 Troubleshooting The SSU-2000e incorporates many alarms and event messages to alert that a possible problem exists. These alarm and event message reports can be accessed via the Communications module serial ports using a dumb terminal or PC.
Page 134: Troubleshooting Guide
A or B (located on the back panel), or the Local port, located on the front panel of the communications module. If the SSU-2000e is connected to a LAN, an Ethernet telnet session may be established. Refer to...
Page 135: Interpreting Status Messages
Chapter 5 Maintenance and Troubleshooting Troubleshooting Interpreting Status Messages The SSU-2000e provides two types of status messages: alarm and event. The following sections describe these messages. Alarm Messages With the exception of loss of power alarms (on main chassis and expansion unit), all alarms are module alarms.
Page 136: Ssu-2000E Troubleshooting Procedures
Chapter 5 Maintenance and Troubleshooting Troubleshooting Table 5-3. SSU-2000e Troubleshooting Procedures Troubleshooting Procedure/Corrective Symptom Probable Cause Action No LED lit on any No power to unit Check to ensure that UPS (if applicable) module is operating correctly. Both A and B fuses are blown Remove both fuses and replace.
Page 137 Chapter 5 Maintenance and Troubleshooting Troubleshooting Table 5-3. SSU-2000e Troubleshooting Procedures (Continued) Troubleshooting Procedure/Corrective Symptom Probable Cause Action Fault LED on Loose module Re-seat module. Output module is lit Loss of signal to output module Re-seat or replace input module (or clock module if necessary).
Page 138: Troubleshooting The Sdu-2000E
The buffer module in the SDU-2000e collects status information from the Output modules and relays status messages to the SSU-2000e. The status messages alert the SSU-2000e when a possible problem exists; they can be accessed through the SSU-2000e using a terminal or PC using a terminal emulation software. Refer to...
Page 139: Re-Ordering Information
To re-order any module or accessory, contact the Sales Department at Symmetricom. Provide the module or accessory name and its item number along with a purchase order number. A current list of SSU-2000e system components modules/accessories and their part numbers is provided in...
Page 140: Contacting Technical Support
3. Provide the return shipping information (customer field contact, address, telephone number, and so forth.) 4. Ship the product to Symmetricom, transportation prepaid and insured, with the Return Material Authorization (RMA) number and item numbers or part numbers clearly marked on the outside of the container to the address given to you by SGS.
Page 141: Chapter 6 Clock Module Reference Data
Chapter 6 Clock Module Reference Data This chapter contains reference information for the following modules available for use in the SSU-2000e system. In This Chapter Stratum 2E Clock Module Stratum 3E Clock Module Type I Clock Module Communications Module 12713140-002-2 Revision E – October 2006...
Page 142: Stratum 2E Clock Module
DDS circuitry, and generates a reference signal used by the input and Output modules. A typical SSU-2000e system contains dual redundant Clock modules. Each Clock module maintains phase synchronization with the redundant Clock module. Its...
Page 143: Functional Block Diagram
Stratum 2E Clock Module Functional Block Diagram A simplified block diagram of the Stratum 2E Clock module is shown in Figure 6-1. Figure 6-1. Block Diagram of the Stratum 2E Clock Module 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 143...
Page 144: Status Led Indicators
On (Amber) Blinking = Clock module is downloading firmware On (Amber) = Unknown Clock module status or fault detected Selected Green On = Module selected for providing outputs Off = Module not selected 144 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 145: Functional Specifications
<1 x 10E Warm-up Time (Warm-up Mode) 20 minutes Wander Output (Holdover) Includes effects of all SSU-2000e modules: Compliant with clock levels per ITU-T G.812, T1.101-1999, and Telcordia Technologies GR-378-CORE and GR-1244-CORE. Meets SONET requirements per T1.105. Meets or exceeds performance requirements for ITU-T G.812 Type II and ETSI Transit Node clocks and T1.101 and...
Page 146: Configuration Data
60 to 500,000 seconds Stratum 3E Clock Module This section provides user reference information for the Stratum 3E Clock module (part number 23413015-000-0 used in the SSU-2000e. This module provides a lower cost backup clock solution for the system. Functional Overview...
Page 147: Functional Block Diagram
00:00:00 January 1, 1980. Functional Block Diagram A simplified block diagram of the Stratum 3E Clock module is provided in Figure 6-3. Figure 6-3. Block Diagram of the Stratum 3E Clock Module 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 147...
Page 148: Status Led Indicators
Off = No Power Present Status Green/Amber On (Green) = No faults detected On (Amber) Blinking = Clock module is downloading firmware On (Amber) = Unknown Clock module status or fault detected 148 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 149: Performance Specifications
Tuning Resolution (Locked Mode) <1 x 10 Warm-up Time (Warm-up Mode) 20 minutes Wander Output (Holdover) Includes effects of all SSU-2000e modules: Exceeds requirements of ITU G.811, ANSI T1.101-1994, T1.105.09, T1X1.3 (proposed new limits for wander generation), and G.823 Jitter (Locked or Holdover) <...
Page 150: Configuration Data
DDS circuitry, and generates reference signals used by the Input and Output modules. A typical SSU-2000e shelf contains dual redundant Clock modules. Each Clock module maintains phase synchronization with the redundant Clock module. Its hardware and software also provides an initial offset adjustment and frequency adjustment resolution of 1 x 10 or better.
Page 151: Functional Block Diagram
Functional Block Diagram A simplified block diagram of the Type I Clock module is shown in Figure 6-5. Figure 6-5. Block Diagram of the Type I Clock Module 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 151...
Page 152: Status Led Indicators
On = Module selected for providing clock signals for output generation. Off = Module not selected Warmup Amber On = Clock module is in warm-up mode Off = Clock module has completed warmup 152 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 153: Functional Specifications
Configuration Data Prior to shipping, all required operational software is factory-loaded. The SSU-2000e ships with a factory default (basic) configuration set and often does not require further configuration. Refer to the SSU-2000e Technical Reference for a list of the factory default settings and the default Priority Quality Level (PQL) values.
Page 154: Communications Module
Functional Overview The Communications module installs in slot A2 and provides an interface between the user and the SSU-2000e system. This interface allows users to display and control much of the activity in the SSU-2000e system and the optional SDU-2000e expansion system.
Page 155 Communications Module When the Communications module is installed, it performs an initial software verification test to verify operation. If the module is installed in the SSU-2000e with power already applied and with other modules installed, the Communications module reads the configuration of the modules in the SSU-2000e and the modules in all installed SDU-2000e expansion shelves.
Page 156: Functional Block Diagram
Status LED Indicators The Communications module contains a group of eight status LED indicators that convey visual status to the user, as shown in Figure 6-8 and described in Table 6-10. 156 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 157: Front Panel Of The Communications Module
Minor Alarm Amber On = Minor system alarm Off = No minor system alarm Ethernet Link Green On = Physical Ethernet connection is made Off = No physical Ethernet connection 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 157...
Page 158: Alarm Logic
CRITICAL Alarms – This class of alarms that require immediate user intervention. When a critical alarm condition is detected, the CRITICAL ALARM relay at the back of the SSU-2000e is activated and the CRITICAL ALARM LED on the front of the Communications module lights red.
Page 159: Configuration Data
Table 6-12. Communications Module Configuration Data Configuration Setting Factory Default Unit Name SSU-2000e User List configurations Maximum of 25 users including four built-in users 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 159...
Page 160: Eia-232 Ports
(see the SSU-2000e Technical Reference) for configuring and detailed performance monitoring. The ports include: Port A and Port B – Tied to external connectors on the back of the SSU-2000e main chassis. One local port – Tied to the connector on the front of the Communications module.
Page 161: Resetting The Module
Use this button only if you cannot acquire access to the SSU-2000 using the serial or Ethernet ports. A contact closure on the Remote Reset connector on the rear panel also performs the Reset function (see Remote Reset, on page 74). 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 161...
Page 162 Chapter 6 Clock Module Reference Data Communications Module 162 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 163: Chapter 7 Input Module Reference Data
This chapter contains reference information for the Input modules available for use in the SSU-2000e. In This Chapter 1-Port and 3-Port E1 Input Modules 1-Port and 3-Port DS1 Input Modules GPS Input Module Composite Clock Input Module 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 163...
Page 164: Port And 3-Port E1 Input Modules
(at a sampling rate of 40 Hz) with the Clock modules that are installed in the SSU-2000e. The Clock modules use this information to phase lock to the incoming signal. The data may also be used for monitoring the frequency of incoming signals.
Page 165: Block Diagram Of The 1-Port And 3-Port E1 Input Modules
Input module sends an event message to the Communications module. The firmware running in the E1 Input module performs the following functions: Determines module type (distinguishes between E1 and DS1 frame chips) 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 165...
Page 166 Reported time periods include: 0.05, 0.10, 0.30, 0.60, 1.0, 2.0, 3.0, 6.0, 10.0, 30.0, 60.0, 100.0, 300.0, 600.0, 1000.0, 3000.0, 6000.0, and 10000.0 seconds. 166 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 167: E1 Input Module Alarm Modes
SSM. If configured for automatic mode, the Input module uses the most recent valid SSM. If a valid SSM is not received, the module uses the provisioned SSM. Refer to the SSU-2000e Technical Reference for more information on provisioning SSMs. 12713140-002-2 Revision E – October 2006...
Page 168 This clear count must exceed a user-set limit before the input signal is no longer in episode. Refer to Changing Factory Defaults, on page 113, for more information on setting the clear count. 168 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 169 If the hardware indicates that the cesium fault level matches the alarmed setting, log an AIS alarm against port 1 Clear the alarm when the hardware’s cesium fault level no longer matches the alarmed level 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 169...
Page 170: Status Led Indicators
The E1 Input module is equipped with a set of status LED indicators that indicate module and incoming signal status. These LEDs are shown in Figure 7-2 (3-port model illustrated) and described in Table 7-3. 170 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 171: Front Panel Of The E1 Input Module
Off = Disabled, or good and not selected PORT 3 INPUT Green/Amber On (Green) = Enabled and signal valid, no major alarms On (Amber) = Enabled and signal not valid Off = Disabled 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 171...
Page 172: E1 Input Module Configuration
MTIE T1000 Limit1 1010/2000/1010 0 to 100000 MTIE T1000 Limit2 1020/2010/1020 0 to 100000 MTIE T10000 Limit 1 1100/2835/1100 0 to 100000 MTIE T10000 Limit 2 1110/2840/1110 0 to 100000 172 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 173: Port And 3-Port Ds1 Input Modules
The 1-Port and 3-port DS1 Input modules receive signals and perform phase measurement comparisons with the Clock modules that are installed in the SSU-2000e. The Clock modules use this information to phase and frequency lock to the incoming signal. The data may also be used for monitoring the frequency of incoming signals.
Page 174: Functional Block Diagram
To prevent confusing frequency offsets for phase jumps, the phase build-out algorithm does not build-out more than eight consecutive samples. If the phase is built out, the Input module sends an event message to the Communications module. 174 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 175 Zeroing the phase invalidates all past phase averages, TDEV, and MTIE. 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 175...
Page 176: Ds1 Input Module Alarm Modes
– Report event message and perform any other actions as required by the user-set severity level – Fault channel, even if severity is less than MAJOR – Monitor PLL for recovery 176 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 177 Log LOS alarm, taking appropriate action per the assigned severity level Invalidate current phase measurements Others (AIS, BPV, CRC, and OOF) Once in episode, take appropriate action according to the severity level assigned to the alarm 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 177...
Page 178 SSMs enabled, the Input module performs the action required by the alarm mode. The action depends on the alarm mode set by the user or the default settings. Refer to the Alarm command in the SSU-2000e Technical Reference for more information on alarm settings.
Page 179: Status Led Indicators
Status LED Indicators The DS1 Input module is equipped with eight status LEDs that indicate module status. These LEDs are shown in Figure 7-4 and are described in Table 7-7. 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 179...
Page 180: Front Panel Of The Ds1 Input Module
Off = Disabled, or good and not selected PORT 3 Green/Amber On (Green) = Enabled and signal valid, no major alarms INPUT On (Amber) = Enabled and signal not valid Off = Disabled 180 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 181: Configuration Options
0 to 100000 MTIE T10000 Limit 1 1100/2835/1100 0 to 100000 MTIE T10000 Limit 2 1110/2840/1110 0 to 100000 MTIE Limit 1 Alarm Mode Minor Ignore, Report, Minor, Major, or Critical 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 181...
Page 182: Gps Input Module
For information on antenna kits and accessories, including part numbers and installation procedures, refer to the SSU-2000e Technical Reference. GPS Input Module Functional Overview...
Page 183: Functional Block Diagram
Chapter 7 Input Module Reference Data GPS Input Module Functional Block Diagram A simplified block diagram of the GPS Input module is shown in Figure 7-5. Figure 7-5. Block Diagram of the GPS Input Module 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 183...
Page 184: Status Led Indicators
On = Selected as the clock reference Off = Not selected as the reference TRACKING Green/Amber On (Green) = RADIO is tracking On (Amber) = Tracking problem without antenna fault Blinking (Amber) = Antenna fault 184 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 185: Configuration Settings
This section provides operating instructions and software provisioning procedures for the Composite Clock Input module (part number 23413279-000-0), designed for use in the SSU-2000e Synchronization Supply Unit. Functional Overview The Composite Clock Input module conditions a composite clock input signal that is used to control the frequency of the Clock modules.
Page 186: Functional Block Diagram
Functional Block Diagram A simplified block diagram of the Composite Clock Input module is shown in Figure 7-7. Figure 7-7. Block Diagram of the Composite Clock Input Module 186 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 187: Status Led Indicators
Off = Not selected as the reference INPUT Green/Amber On (Green) = Enabled and signal valid (no major alarms) On (Amber) = Enabled and signal not valid Off = Disabled 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 187...
Page 188: Factory Default (Basic) Configuration
LOS: 1 – 100 BPV: 1 – 100000 Alarm Elevation Time 86400 seconds 0 – 500000 seconds Port Status Enabled Enabled/Disabled Port Name None (blank) Any string from 0 – 20 characters 188 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 189: Chapter 8 Output Module Reference Data
Chapter 8 Output Module Reference Data This chapter contains reference information for the Output modules available for use in the SSU-2000e. In This Chapter E1 Output Module DS1 Output Module Composite Clock Output Module E1/2048 kHz Output Module 2048 kHz Output Module...
Page 190: E1 Output Module
SDU-2000e expansion shelf. Functional Overview The E1 Output module uses one of three 4 kHz clocks from the SSU-2000e main chassis backplane to generate a phase-locked signal of 2.048 Mbps. If the unit is inserted into an SDU-2000e expansion shelf, a fourth 4 kHz clock (D-clock) is available.
Page 191: Functional Block Diagram
Chapter 8 Output Module Reference Data E1 Output Module Functional Block Diagram A simplified block diagram of the E1 Output module is shown in Figure 8-1. Figure 8-1. Block Diagram of the E1 Output Module 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 191...
Page 192: Status Led Indicators
On (Green) = Source B is the selected source clock On (Amber) = Faulty or missing B source clock Off = Source B is ignored or good and not selected 192 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 193: Performance Specifications
Risetime <100 ns Pulse Width 244 ns, nominal into 120Ω Pulse Interval 488 ns, nominal Duty Cycle Pulse Amplitude 2.2 to 3.3 Vpp Jitter < 0.01 UI Number of Outputs 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 193...
Page 194: Ds1 Output Module
The DS1 Output module generates a phase-locked signal of 1.544 Mbps using one of three 4 kHz clocks from the backplane of the SSU-2000e main shelf (A, B, and C clocks). If the module is inserted into the SDU-2000e Synchronization Distribution Unit (expansion shelf), a fourth 4 kHz clock (D clock) is available.
Page 195: Status Led Indicators
Status LED Indicators The DS1 Output module status LED indicators are shown in Figure 8-4 and are described in Table 8-3. Figure 8-4. Front Panel of the DS1 Output Module 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 195...
Page 196: Performance Specifications
Risetime <100 ns Pulse Width 324 ns, nominal into 100Ω Pulse Interval 648 ns, nominal Duty Cycle Pulse Amplitude 2.6 to 3.6 Vpp Jitter < 0.01 UI Number of Outputs 196 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 197: Composite Clock Output Module
Composite Clock Output Module Composite Clock Output Module This section provides user-reference data for the Composite Clock Output module (part number 23413279-000-0) used in both the SSU-2000e main chassis and in the optional SDU-2000e expansion shelf. Composite Clock Output Module Overview The Composite Clock Output module generates 20 signal pairs (TTIP and TRING signal pairs).
Page 198: Functional Block Diagram
Composite Clock Output Module Functional Block Diagram A simplified block diagram of the Composite Clock Output module is shown in Figure 8-5. Figure 8-5. Block Diagram of the Composite Clock Output Module 198 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 199: Status Led Indicators
On (Green) = Source B is the selected source clock On (Amber) = Faulty or missing B source clock Off = Source B is ignored or good and not selected 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 199...
Page 200: Composite Clock Output Module Specifications
7.8 μs ±2% for 50/50 duty cycle 15.6 μs, nominal Pulse Interval Duty Cycle 62.5/37.5 or 50/50 selectable 2.7 to 5.5 Vpk, 3.5 Vpk nominal into 133 Ω Pulse Amplitude Number of Outputs 20 Independent Channels 200 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 201: E1/2048 Khz Output Module
(AMI) encoding. When zero suppression is on, HDB3 encoding is used. The output SSM can be automatically set by the input signal or manually using an ICS or TL1 command. See the SSU-2000e Technical Reference for details on setting the output SSM.
Page 202 Each digit represents four of the 20 ports on the module; the first digit represents ports 1 through 4, the second digit represents ports 5 through 8, and so on, as shown in Figure 8-7. 202 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 203: Using The Hex Number To Identify Output Ports
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 203...
Page 204: Bypass Clock (Clk-C) Alarms
Input modules and connect an input signal to the module: DS1, E1, or CC. If the SSU-2000e has only GPS Input module(s), then set the Bypass mode to OFF to prevent the Output modules from generating the CLK-C alarm (alarm 4).
Page 205 ---- ---- --- --- -------- ---- --- --------------------------------------- 1A06 E12M Ok / / /N/N / / / / /I/ /E/ / /N/N/N/ / / / / / / / / 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 205...
Page 206: Functional Block Diagram
E1/2048 kHz Output Module Functional Block Diagram A simplified block diagram of the E1/2048 kHz Output module is shown in Figure 8-8. Figure 8-8. Block Diagram of the E1/2048 kHz Output Module 206 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 207: E1/2048 Khz Output Module Status Indicators
SOURCE B Green/Amber On (Green) = Source B is the selected source clock On (Amber) = Faulty or missing B source clock Off = Source B is good and not selected 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 207...
Page 208: E1/2048 Khz Output Signal Specifications
ITU-T G.703/9 (10/98) Signal Clock Clock Format None None Twisted pair, 120 Ω Coaxial, 75 Ω Cable Maximum Peak Voltage 1.90 V 1.50 V Minimum Peak Voltage 1.00V 0.75 V 208 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 209: E1/2048 Khz Output Module Software Options
This section provides operating instructions and software provisioning procedures for the 2048 kHz Output module (part number 23413159-000-0). It also contains default provisioning settings, and procedures for connecting to the SSU-2000e in order to enable, provision, and disable the module.
Page 210: Output Squelching
Revision D or later firmware. This feature allows you to turn off any of 20 output ports on redundant or non-redundant modules. The SSU-2000e uses the system Priority Quality Level (PQL) to determine when the system is operating within specified limits; if the outputs become degraded, then the system automatically turns off the affected ports.
Page 211: Using The Hex Number To Identify Output Ports
1 and 3 (corresponding to the A in Digit 1), 6 and 8 (corresponding to the 5 in Digit 2), 16 (corresponding to the 1 in Digit 4), and 17 through 20 (corresponding to the F in Digit 5). 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 211...
Page 212: Identifying Failed Ports From The Hex Digit
------- ---- ------------------ --------------- ------------- --------- 2A10 (00) Redundant Major 2A10 (01) Module Match Major 2A10 (02) Clk-A Major 2A10 (03) Clk-B Major 2A10 (04) Clk-C Major 2A10 (05) Clk-D Major 212 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 213: Functional Block Diagram
Major 00001 SSU-> Provisioning the Squelch Parameter To view or provision the squelch using ICS or TL1 commands, see the SSU-2000e Technical Reference. Functional Block Diagram A simplified block diagram of the 2048 kHz Output module is shown in Figure 8-11.
Page 214: Status Led Indicators
On (Green) = Source B is the selected source clock On (Amber) = Faulty or missing B source clock Off = Source B is ignored or good and not selected 214 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 215: Performance Specifications
RS-422 Output Module This section provides operating instructions and software provisioning procedures for the RS-422 Output module (part number 23413287-000-0) designed for use in the SSU-2000e Synchronization Supply Unit. Functional Overview The RS-422 Output module generates 10 balanced square-wave outputs (TTIP and TRING signal pairs) and 10 single-ended (Ring) square-wave outputs.
Page 216: Provisioning Output Frequencies
You use software commands to set the frequency of each port on the RS-422 Output module. Commands are available in both ICS and TL-1 modes. To provision the output frequency using ICS or TL1 commands, see the SSU-2000e Technical Reference.
Page 217: Using The Hex Number To Identify Output Ports
1 and 3 (corresponding to the A in Digit 1), 6 and 8 (corresponding to the 5 in Digit 2), 16 (corresponding to the 1 in Digit 4), and 17 through 20 (corresponding to the F in Digit 5). 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 217...
Page 218: Identifying Failed Ports From The Hex Digit
RS-422 Output module alarms, including Alarm #14, Squelching. Use the Alarm command to provision these alarms to Ignore, Report Only, Minor Alarm, Major Alarm (default), or a Critical Alarm. Refer to the SSU-2000e Technical Reference for more information on using the Alarm command. SSU+>al 2a10...
Page 219: Functional Block Diagram
(09) PortFlt Active Major SSU-> Provisioning the Squelch Parameter To view or provision the squelch using ICS or TL1 commands, see the SSU-2000e Technical Reference. Functional Block Diagram A simplified block diagram of the RS-422 Output module is shown in Figure 8-14.
Page 220: Status Indicators
On (Green) = Source B is the selected source clock On (Amber) = Faulty or missing B source clock Off = Source B is ignored or good and not selected 220 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 221: Performance Specifications
Table 8-16. Table 8-17. RS-422 Output Module Configuration Configuration Setting Factory Default Range Port State Disabled Disabled/Enabled Min Clock Acquire Acquire/Lock Framing Not applicable Not applicable 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 221...
Page 222: Buffer Module
SDU-2000e Expansion shelf. The Buffer module buffers the backplane and clock signals sent from the main shelf; the modules are installed in slots 15 and 16 of the SDU-2000e. Symmetricom recommends a minimum of one Buffer module in each expansion shelf; a second Buffer module provides redundancy.
Page 223: Buffer Module Status Led Indicators
Off = Loss of Source A –48V Power B Green/Amber On (Green) = Receiving input power from Source B On (Amber) = Power connections reversed Off = Loss of Source B 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 223...
Page 224 Chapter 8 Output Module Reference Data Buffer Module 224 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 225: Chapter 9 Hardware Configuration Guide
Chapter 9 Hardware Configuration Guide This chapter describes how to configure the SSU-2000e into a variety of telecommunications configurations, depending on which modules are installed. In This Chapter Configuring a Conventional SSU/TSG System Configuring a Primary Reference Source (PRS) System...
Page 226: Configuring A Conventional Ssu/Tsg System
1.0-inch wide filler panels and a 3-1/2” wide filler panel as necessary Configuring a Primary Reference Source (PRS) System In a Primary Reference Source (PRS) configuration, the SSU-2000e meets the specifications defined in American National Standards Institute (ANSI) T1.101-1994. ANSI defines a Primary Reference Source as “equipment that...
Page 227: Configuring A Monitor-Only System
Configuring a Monitor-Only System In a monitor-only configuration, no output signals are required. One of the inputs is designated as the reference, and the SSU-2000e Clock module is locked directly to this signal. All remaining input signals are then compared to the phase-locked oscillators (and indirectly to the designated input reference).
Page 228: Ssu-2000E Configuration Chart
A fully-populated SSU-2000e main shelf is shown in Figure 9-4. Table 9-1 contains a listing of all SSU-2000e components, provides the associated Symmetricom part numbers and provides other configuration data required to procure a custom system. Figure 9-4. SSU-2000e Main Shelf, Front View 228 SSU-2000e User’s Guide...
Page 229: Ssu-2000E System Components
Chapter 9 Hardware Configuration Guide SSU-2000e Configuration Chart Table 9-1. SSU-2000e System Components Item Description Part Number Notes SSU-2000e Main Shelf and Associated Hardware SSU-2000e Main Shelf 25413140-000-0 Required for all systems. (Chassis) with SDU If an expansion chassis (SDU-2000e) is termination plug and...
Page 230 Chapter 9 Hardware Configuration Guide SSU-2000e Configuration Chart Table 9-1. SSU-2000e System Components (Continued) Item Description Part Number Notes Communications Module Communications module 23413012-000-0 One required per SSU-2000e system. Input Modules 3-Port DS1 Input module 23413013-002-0 Accepts up to three DS1 or clock signals.
Page 231 Chapter 9 Hardware Configuration Guide SSU-2000e Configuration Chart Table 9-1. SSU-2000e System Components (Continued) Item Description Part Number Notes Composite Clock Output 23413158-000-0 1. Installed in sets of two. Module 2. Each Output module pair provides 20 sets of summed output signals (redundant configuration).
Page 232: Sdu-2000E Configuration Chart
A fully-populated SDU-2000e expansion shelf is shown in Figure 9-5. Table 9-1 contains a listing of all SDU-2000e components and associated Symmetricom part numbers. This table also provides other configuration data required to design a custom system. Figure 9-5. SDU-2000e Expansion Shelf, Front View 232 SSU-2000e User’s Guide...
Page 233: Sdu-2000E System Components
Shelf (Chassis) 2. The SSU Expansion Terminator must SDU Backup Clock Terminator be moved from the SSU-2000e chassis, connectors J8 and J9 to connectors J105 and J106, respectively, on the last expansion chassis in the daisy chain. 3. Requires minimum of one Buffer...
Page 234 Filler panels are required in all unused Panel (1.5cm wide) SDU-2000e chassis slots. EIA-232 Cabling Cable, EIA-232 551026-0038 Used for communication with the Shielded, DB9P to SSU-2000e. DB9S, 5 ft. (1.5 m) 234 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 235: Index
TDEV alarm cautions defined relay contacts, Communications module Cesium fault, DS1 Input module Alarm Indication Signaling. See AIS alarm modes chassis slot assignments, SSU-2000e alarms checking current alarms checklist categories installation procedure checking current pre-installation, SSU-2000e...
Page 236: Index
Index C—C clock input connector pinout SDU-2000e clock input connectors SSU-2000e clock module section, SSU-2000e TSG illustration Clock module STR 2E – Configuration Settings connections Clock module STR 3E – alarm closure clock output connector pinout alarm status clock source...
Page 237: Index
E1 Output module E1/2048 kHz Output module front panel RS-422 Output module E1/2048 kHz Output module front view, SSU-2000e block diagram functional description front panel connections specifications EIA-232 connections E1/DS1 Input modules 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 237...
Page 238: Index
2048 kHz Output module procedure 2E Clock module installation adding or enabling checklist, procedure Buffer EMI considerations CC Output module modules, precautions Clock module STR 2E – 238 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 239: Index
Clock module STR 3E – output clock connectors Output module Communication module, configuration data connection references Communications module – output module section, SSU-2000e Composite Clock Input output signal Composite Clock Output connections Composite Clock Output module functional description composite clock output module, specifications...
Page 240: Index
2048 kHz Output module requirements communication control, input/output E1/2048 kHz Output module terminator, SSU expansion RS-422 Output module restoring a configuration Return Authorization SSM Selection Criteria returning equipment SSM,Synchronization Status Messages 240 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...
Page 241: Index
TDEV web address calculation West connections technician-level users Telcordia Technologies (formerly Bellcore) GR-1244 GR-378 zeroing phase Telnet ports. See Ethernet port 12713140-002-2 Revision E – October 2006 SSU-2000e User’s Guide 241...
Page 242: Index
Index Z—Z 242 SSU-2000e User’s Guide 12713140-002-2 Revision E – October 2006...

This manual is also suitable for:

Sdu-2000e

Symmetricom SSU-2000e User Manual

Chapter 1 Product Overview

Chapter 2 Installing the SSU-2000E

Chapter 4 Commissioning the SSU-2000E

Chapter 5 Maintenance and Troubleshooting

Chapter 6 Clock Module Reference Data

Chapter 7 Input Module Reference Data

Chapter 8 Output Module Reference Data

Chapter 9 Hardware Configuration Guide

Quick Links

Troubleshooting

Need help?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Symmetricom SSU-2000e

Summary of Contents for Symmetricom SSU-2000e