Page 1 TimeHub 5500 User’s Guide Issue 8 – February 2005 Part Number 097-55501-01...
Page 2 2300 Orchard Parkway San Jose, CA 95131-1017 U.S.A. http://www.symmetricom.com Copyright © 2003–2005 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: Table Of Contents
TimeScan THC Software ..........40 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 4 Rack Mounting the TimeHub 5500........
Page 5 Setting the Configuration to Factory Defaults ......147 Chapter 5 Maintaining the TimeHub 5500 Clearing Output Port Alarms .
Page 6 Troubleshooting the TimeHub 5500........
Page 7 User Changes to Factory Defaults ....... . . 196 Index 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 8 Table of Contents viii TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 9 Block Diagram of the TimeHub 5500 ........
Page 10 Location of Fuse F1 on the EC Card........183 TimeHub 5500 User’s Guide...
Page 11 SSM Source Determination for Remote Shelf......34 Wire-Wrap Panels Available for the TimeHub 5500 ..... . . 43 Wire-Wrap Connection Cables .
Page 12 Table of Contents TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 13: How To Use This Guide
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 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 14: Purpose Of This Guide
Purpose of This Guide Purpose of This Guide The TimeHub 5500 User’s Guide describes the procedures for unpacking, installing, using, maintaining, and troubleshooting the Symmetricom TimeHub 5500. It also includes appendixes that describe alarms and events, the languages that you use to communicate with the TimeHub 5500, default values, and other information.
Page 15: Structure Of This Guide
Contains preventive and corrective maintenance, and TimeHub 5500 troubleshooting procedures for the product. Chapter 6, Specifications Lists the specifications for the TimeHub 5500. Index Provides references to individual topics within this guide. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 16: Conventions Used In This Guide
Typographical Conventions – This guide uses the typographical conventions described in the table below. When text appears ... it means: this way... TimeHub 5500 User’s Guide The title of a document. An operating mode, alarm state, status, or chassis label. CRITICAL IOC1 Select File, Open...
Page 17: Warnings, Cautions, Recommendations, And Notes
Note: All notes use this symbol. Notes contain installation, operation, or maintenance procedures, practices, conditions, or statements, that alert you to important information, which may make your task easier or increase your understanding. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide xvii...
Page 18: Related Documents And Information
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...
Page 19: Chapter 1 Description
Chapter 1 Description Chapter This chapter describes the TimeHub 5500, and includes the following topics: Overview Physical Description Functional Description Alarms Synchronization Status Messaging Passthrough Mode Master/Remote Shelf Expansion Shelf TimeScan THC Software 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 20: Overview
(CC) (64 kb/s) and DS1 (1.544 Mb/s) timing output signals. These signals provide timing synchronization inputs to various network elements. If a reference input is lost, the TimeHub 5500 provides SmartClock holdover that exceeds Stratum 2 accuracy.
Page 21: Physical Description
TimeHub 5500 Shelf and Connection Panels Functional Description The TimeHub 5500 accepts up to five incoming signals and selects one of the qualified references (inputs 0–4) as the active tracked reference using criteria programmed by a system administrator. The TimeHub then filters and distributes precise timing signals to the office equipment.
Page 22: Communication Ports
Mode, on page 29. Communication Ports The LAN connection allows you to connect the TimeHub 5500 to an Ethernet network for monitoring and provisioning. You configure network parameters using TL1 commands. The TimeHub 5500 can support up to 10 simultaneous network sessions.
Page 23: Power Supply
Management card. Dual connections are provided for access convenience and both are physically connected to the same serial port. These ports provide a means for TL1 command access to the TimeHub 5500. Note: Communication cannot be established to both of the Local ports simultaneously;...
Page 24: Management Card
Cards, on page 44. Management Card The Management card manages alarms to and from the TimeHub 5500, and provides local and Ethernet LAN communication interfaces. The TimeHub can operate without a Management card installed, but you will lose any communications abilities, alarms, and the Passthrough feature.
Page 25: Output Connector Modules
LAN communication interface. In addition, contact closures provide for remote indication of alarms on the shelf. There are two types of alarms associated with the TimeHub 5500: shelf and system. A shelf alarm is one that occurs from within the TimeHub shelf, and a system alarm is one that is sensed via one of the external alarm wire-wrap inputs on the input/ alarm card.
Page 26: Alarm Connections
Module, on page 78. Synchronization Status Messaging The TimeHub 5500 supports input and output SSM (Synchronization Status Messaging). SSM provides a method for providing clock quality information to any equipment that uses synchronization inputs. For DS1 signals, SSM information can be encoded on ESF (Extended Super Frame) signals.
Page 27: Input Ssms
Input SSMs The TimeHub 5500 provides several input-related SSM capabilities. You can provision the TimeHub 5500 to read the SSM value associated with any input. You can then use that value to determine which input becomes the active reference signal. If an input does not have an SSM value associated with it (such as a D4- framed DS1 input or a 5/10 MHz input), you can assign an SSM value to the input.
Page 28: Automatic Reference Switching
The rationale for this is that the internal reference oscillator will provide a better timing reference than any input with a lower quality level. The quality levels for TimeHub 5500 internal oscillators are 3 for any rubidium type clock (090-55513-01 and 090-55514-02) (Stratum 2 traceable) and 5 for any quartz type clock (090-55511-01 and 090-55512-02) (Stratum 3E traceable).
Page 29: Passthrough Mode
BITS concept and Telcordia general requirements. Passthrough Mode The TimeHub 5500 can provide a usable clock in a situation where both Clock cards are removed from the shelf. The capability is called Passthrough and resides on the TimeHub Management card.
Page 30 (and thus maintain output timing), the Management card cannot provide holdover. Therefore, outputs are disabled if there is no timing input when in Passthrough mode. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 31: Passthrough Considerations
For a master shelf the timing references must be DS1 or 5/10 MHz inputs. Phase-alignment between input and output is maintained during the transition into Passthrough from normal operation, while in Passthrough, and during the exit from Passthrough back to normal operation. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 32: Master/Remote Shelf
Master/Remote Shelf The TimeHub 5500 can be configured for use as a Master shelf or as a Remote shelf. The essential difference between these configurations is that a Master shelf accepts PRS (5 or 10 MHz) and DS1 inputs as timing references while a Remote shelf accepts Composite Clock (CC) inputs as the timing reference(s).
Page 33: Remote Shelf Capability
Clock card display information for the inputs. See Figure 2-2, which shows the front panel of the Clock card. The relevant LEDs are CC 1 and 2 and DS1 1 and 2. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 34: Ssms In A Remote Shelf
Both DS1-1 and DS1-2 are decoding valid Reference Guide for details on PRIORITY SSM information ("E" and "Q" are lit for both keyword. DS1-1 and DS1-2 rows). Only one of these rows can indicate "A". TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 35: Expansion Shelf
Expansion Shelf For situations requiring more outputs than can be provided by a Master shelf, the TimeHub 5500 supports one to four Expansion shelves. Each Expansion shelf provides up to 320 protected inputs; using four expansion shelves, a TimeHub system can provide a total of 1420 outputs.
Page 36: Output Driver Cards
A firmware upgrade is available to allow such Output Driver cards to become usable in slot 16H. Contact Symmetricom Global Services (SGS) for details. Output Driver cards with firmware revision 4209A and higher function properly in every slot in the Expansion shelf.
Page 37: Expansion Controller Card
Expansion shelves. These cards are described in Output Connector Modules, on page 54. There are two cables available for connecting Output Connector modules in the Expansion (or Master) shelf to the wire-wrap panels. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 38: Output Driver Cards And Output Connector Modules
The interconnections between the Master and Expansion shelf are designed to support redundancy in several areas. Each area is independent of the others; if one type of redundancy is lost the other areas of redundancy are not compromised. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 39: Communicating With The Expansion Shelf
If you permanently remove an Expansion shelf from a TimeHub system, manually set the value of ECLKEXP for the targeted EC card(s) to N. Any events associated with the EC card will be cleared. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 40: Timescan Thc Software
TimeScan THC Software TimeScan THC Software The TimeHub 5500 is delivered with a software application called TimeScan THC. This application is a craft graphical user interface (GUI) that provides a point-and- click interface for configuring and maintaining the TimeHub 5500.
Page 41: Issue 8 - February 2005 Timehub 5500 User's Guide
Chapter 2 Engineering & Ordering Information Chapter This chapter includes: Overview Wire-wrap Panels Card Overview Ordering and Parts List User-Supplied Tools and Materials 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 42: Overview
Chapter 2 Engineering & Ordering Information Overview Overview This chapter describes the cards and accessories available for the TimeHub 5500. If any difficulties are encountered during the installation process, contact Symmetricom Global Services. Refer to Technical Assistance, on page 185 for telephone numbers.
Page 43: Wire-Wrap Panels Available For The Timehub 5500
060-55591-10 20-foot (710 cm) interconnect cable 060-55591-20 Symmetricom also offers cable management kits made of ABS plastic to ensure a neat installation. These kits are available in 1 RU and 2 RU heights to meet a variety of installation needs.Table 2-3 lists the cable management kits available.
Page 44: Accessories
Expansion chassis Card Overview This section describes the cards available for the TimeHub 5500. Clock Cards The function of the Clock cards in the TimeHub 5500 is described in Clock Cards, on page 23. Standard Clock cards: These cards are equipped with five inputs (four DS1 and one 5/10 MHz) and do not support Expansion shelves).
Page 45: Front Panel Of The St2-Rb Clock Card
Chapter 2 Engineering & Ordering Information Card Overview Figure 2-2 illustrates the front panel of the Clock card. Figure 2-2. Front Panel of the ST2-Rb Clock Card 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 46: Clock Card Front Panel Indicators
Off = The system is not in Holdover state Inputs E Green On = The associated reference input is enabled (E) for tracking Off = The associated reference input is not enabled (E) for tracking TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 47 Off = This card is not generating an output that is phase-locked to the output of the other (active) Clock card Force Active – Pressing this button forces the Clock card to be the active (pushbutton) card 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 48: Management Card
24. The Management card kit (990-55542-01) includes the Management card, a DB9 cable, and a CD that contains the TimeScan THC software. Figure 2-3 illustrates the front panel of the Management card. Figure 2-3. Front Panel of the Management Card TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 49: Management Card Front Panel Indicators
Off = The local communication port is disabled Comm Ports Green On = A user is logged on the local port Local Logon Off = A user is not logged on the local port 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 50: Output Driver Cards
If you do not need protected outputs, you can install one Output Driver card in either slot of a group. Figure 2-4 shows the front panel of the Output Driver card. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 51: Front Panel Of The Output Driver Card
Chapter 2 Engineering & Ordering Information Card Overview Figure 2-4. Front Panel of the Output Driver Card 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 52: Output Driver Card Front Panel Indicators
On = A CC Output Connector module is connected to ports 21 through 40 Off = There is no Output Connector module connected to ports 21 through 40; no outputs can be generated TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 53: Input/Alarm Connector Module
Master/Remote shelf. The module is shown in Figure 2-5. Expansion shelves do not use an Input/Alarm Connector module. Figure 2-5. Front Panel of the Input/Alarm Connector Module 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 54: Output Connector Modules
Card Overview Output Connector Modules The TimeHub 5500 can provide either Composite Clock (CC) or DS1 output signals. The Output Connector module determines the type of signal. You can install a combination of Output Connector module types to meet the needs at the site.
Page 55: Output Connector Modules For The Master/Remote Shelf: Ds1 (Left) And
Chapter 2 Engineering & Ordering Information Card Overview Figure 2-6. Output Connector Modules for the Master/Remote Shelf: DS1 (left) and CC (right) 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 56: Expansion Controller Card
The EC card provides the following functions: Buffering of timing and framing signals sourced by Clock cards in the Master shelf, and delivery of those signals to the Expansion shelf output cards. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 57: Front Panel Of The Expansion Controller Card
Expansion shelf power monitoring and alarm reporting Redundancy management Signal integrity monitoring Front Panel Indicators Figure 2-8 illustrates the front panel of the Expansion Controller card. Figure 2-8. Front Panel of the Expansion Controller Card 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 58: Expansion Controller Card Front Panel Indicators
Clock card so it is not critical that an EC card get its clock from its preferred source. This alarm is reported simply to indicate the situation when this card is currently not getting its clock from the preferred source. Specifically: TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 59: Ordering And Parts List
Note: This clock supports Expansion shelves. Rubidium clock cards: Rubidium 5 input (090-55513-01) Note: This clock does not support Expansion shelves. Rubidium 9 input (090-55514-02) Note: This clock supports Expansion shelves. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 60: Expansion Shelf Basic Components
TimeHub documentation Expansion 090-55545-01 1 (minimum) Expansion Controller card Controller card 2 (recommended) (090-55545-01) Output Driver 090-55581-01 1 (minimum) Output card (090-55581-01) cards 2 (recommended) up to 16 per Expansion shelf TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 61: Accessories And Spare Parts
Blank panel to cover space of unused Output module Output module slot. Covers two module spaces (one group). Expansion shelf only. Spare Parts Wire-wrap input 090-55561-01 Wire-wrap input board. module Master/Remote shelf only. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 62: User-Supplied Tools And Materials
Includes kit to mount on 23 in. rack. User-Supplied Tools and Materials User-supplied tools and materials are listed below. Phillips-head screwdriver for installing the TimeHub 5500 shelf in a rack Phillips-head or Pozidrive screwdriver for tightening or loosening captive screws ESD wrist strap for installing cards...
Page 63: Chapter 3 Installing The Timehub
Chapter This chapter includes: Overview Installation Checklist Unpacking the TimeHub 5500 Rack Mounting the TimeHub 5500 Configuring the Shelf as a Master or Remote Making Ground and Power Connections Installing Modules into the Rear Panel Making Signal Connections Installing the Cover Installing Expansion Shelves 097-55501-02 Issue 8 –...
Page 64: Overview
The TimeHub 5500 shelf, when installed, occupies 10.5 in (26.7 cm, 6 RU) of vertical rack space and has a depth of 11.5 in (29.2 cm). The Wire-wrap High-Density Adapter Panel delivered with the TimeHub 5500 occupies 3.5 in (8.9...
Page 65: Installation Tools And Equipment
Chapter 3 Installing the TimeHub Overview Installation Tools and Equipment You will need the following tools and equipment to install the TimeHub 5500: Standard tool kit Cable sewing cord or acceptable ties or clamps 16 AWG (minimum) wire for –48V, RTN, and frame ground...
Page 66: Ventilation Considerations
To verify that each step in the installation procedure is complete, fill in the checklist Table 3-1 as you complete the steps. You can complete the procedures in any order your site requires; the procedures in this Guide are in Symmetricom’s suggested sequence. Table 3-1. Installation Checklist...
Page 67: Unpacking The Timehub 5500
Chapter 3 Installing the TimeHub Unpacking the TimeHub 5500 Unpacking the TimeHub 5500 The TimeHub 5500 is packaged to protect it from normal shock, vibration and handling damage. Care should be taken during unpacking and installation to avoid damaging the unprotected unit.
Page 68: Installing The Wire-Wrap Panel
Chapter 3 Installing the TimeHub Rack Mounting the TimeHub 5500 Figure 3-1. Mounting Options for the Shelf Installing the Wire-wrap Panel If you are using an existing wire-wrap panel (for example, part number 090-41902-01), leave the panel in the rack. Replace the cables using an approved Method of Procedure (MOP) for cutting over from an existing shelf.
Page 69: High-Density Wire-Wrap Panel (Front And Rear)
Chapter 3 Installing the TimeHub Rack Mounting the TimeHub 5500 Figure 3-2. High-Density Wire-wrap Panel (Front and Rear) Figure 3-3. Assembling the Rack Extenders for a 23-inch Shelf 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 70: Sample Rack Installation Of A Master Shelf
Chapter 3 Installing the TimeHub Rack Mounting the TimeHub 5500 If you are installing an Expansion shelf, mount one wire-wrap panel above the Expansion shelf and the other below the Expansion shelf, leaving 1 RU above and below each wire-wrap panel for ventilation. A...
Page 71: Sample Rack Installation Of A Master And Expansion Shelf
Chapter 3 Installing the TimeHub Rack Mounting the TimeHub 5500 Figure 3-5. Sample Rack Installation of a Master and Expansion Shelf 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 72: Configuring The Shelf As A Master Or Remote
Master/Remote Shelf, on page 32, describes the Master and Remote operating modes. The TimeHub 5500 shelf is delivered from the factory configured as a Master. Note: Management cards (090-55542-01) and Clock cards (090-55512-0x, 090-55514-0x) with firmware versions 4109x do not support Remote shelves.
Page 73: Making Ground And Power Connections
Configures the shelf as Remote Remote LED lights following Warmup Making Ground and Power Connections The TimeHub 5500 has redundant -48VDC power input connections labeled A and B. Both are located in the upper-right and upper-left corners of the rear panel, as shown in Figure 3-7.
Page 74: Connectors On The Rear Panel Of The Master Shelf
Remove the paint and sand the area around the screw hole to ensure proper conductivity. Coat the connection with an electrically conductive antioxidant compound such as Kopr-Shield spray. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 75: Grounding The Wire-Wrap Panel
Warning: To avoid possible damage to equipment, you must provide power source protective fusing as part of the installation. The TimeHub is intended for installation in a restricted access location. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 76: Testing Power Connections
A and B power from the same source. Use 10 A fuses in the source that supplies power to the TimeHub 5500 shelf. Testing Power Connections To verify that the power connections to the TimeHub 5500 Main shelf are correct, follow the steps in this section.
Page 77: Installing Modules Into The Rear Panel
Panel, on page 100. Installing Rear Panel Modules You install Output Connector modules and the Input/Alarm Connector module on the rear panel of the shelf, as shown in Figure 3-10. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 78: Installing The Input/Alarm Connector Module
Each Output Connector module provides connections for 20 signals from the Output Driver cards. The Output Connector modules for a Master/Remote shelf cannot be used on an Expansion shelf. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 79 Carefully seat the module onto the shelf. Tighten the captive screws to complete the installation. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 80: Installing Blank Panels
Output Connector Module Blank Panels (Master and Remote Shelf Only) The blank panel (p/n 093-55599-01) can be used only in a Master/Remote shelf. Install blank panels in the spaces where no Output Connector modules are installed. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 81: Making Signal Connections
If you are not installing an Expansion shelf, you must install a Termination Connector (090-555xx-0x) on both Expansion Link 1 and Expansion Link 2 on the rear panel of the shelf. These Termination Connectors are included in the Master/Remote shelf kit. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 82: Making Shelf-To-Panel Connections
3-13. Note: The shield drain conductor is provided to ground to the rack frame ground at the wire-wrap connector end. Symmetricom does not recommend that you ground the shield at both ends. If the timing lead is connected to a Network Element with an isolated ground configuration, then terminate the shield wire at the Network Element.
Page 83: Connecting Outputs To The High-Density Wire-Wrap Panel
Making Signal Connections To maximize the number of timing leads that you can terminate on the High-Density Wire-wrap Panel, Symmetricom recommends that you cut back the sheathing on the cable such that only the Tip, Ring, and insulated Shield conductors enter the cable management kit.
Page 84: Connecting Outputs To Existing Wire-Wrap Panels
A through D and E through H outputs from the TimeHub Expansion shelf to the High-Density Wire-wrap Panel, respectively. The diagrams illustrate suggested cable routing using the optional Cable Management trays. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 85: Connecting A-D Outputs Of The Expansion Shelf To The High-Density
Chapter 3 Installing the TimeHub Making Signal Connections Figure 3-15. Connecting A-D Outputs of the Expansion Shelf to the High-Density Wire-wrap Panel 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 86: Connecting Timing Inputs
Module, on page 78. DS1 Reference You can connect up to four DS1 reference inputs to the TimeHub 5500; use the wire-wrap pins labeled DS1 TERM IN on the Input/Alarm Connector module. Connect the tip wire to the pins labeled T, the ring wire to the pins labeled R, and the shield (if connected at the TimeHub 5500) to the pins labeled S.
Page 87: Input/Alarm Connector Module Connections
Input/Alarm Connector module only when you install nine-input Clock cards (090-55512-02 or 090-55514-02). Connect the tip wire to the pins labeled T, the ring wire to the pins labeled R, and the shield (if connected at the TimeHub 5500) to the pins labeled S.
Page 88: Making Communication Connections
Figure 3-12 for the connector location; Table describes the connector pinout. Each TimeHub 5500 has its own IP address that can be set through the local RS-232 port, as described in Communicating by Ethernet, on page 112. Once the IP address has been set and a LAN connection made, the TimeHub 5500 can be remotely accessed on a network.
Page 89: Connecting Alarms
From TimeHub 5500 Note: Pins not listed are reserved for future use. The TimeHub 5500 is wired as a DTE device; use a null-modem cable to connect a laptop. Use a straight-through cable to connect a modem to this port. The default port setting are 9600 baud, no parity, 8 data bits, 1 stop bit, echo on, and handshaking disabled.
Page 90 Connect the external alarm inputs (customer-configured alarm inputs) to RACK ALM INPUTS wire-wrap pins 1 through 10 on the Input/Alarm Connector module. Figure 3-17 for the location of the pins. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 91: Gps Input
Chapter 3 Installing the TimeHub Installing the Cover The external alarm inputs allow the TimeHub 5500 to accept alarms from external equipment. When an alarm is accepted: an alarm LED lights in the “system” row on the Management card the appropriate alarm output wire-wrap pins (AUD and VIS) activate on the Alarm...
Page 92: Installing Expansion Shelves
Installing Expansion Shelves Installing Expansion Shelves The TimeHub 5500 has two interface connectors to connect an Expansion shelf. You can connect up to four Expansion shelves in a daisy-chain fashion using two Expansion Interface cables (060-55591-02) per shelf. You make the connection using the Expansion Link 1 and 2 connectors on the rear panel of the Main shelf.
Page 93: Address Switch Sw1 On The Expansion Shelf
Sets a unique address for the TL1 responses originating from this Expansion shelf shelf start with Sx, where x is the value of the rotary switch All other positions Reserved for future use – 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 94: Installing Output Connector Modules
Carefully seat the module onto the shelf. Tighten the captive screws to complete the installation. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 95: Making Expansion Shelf Connections
2. Connect the other end of this cable to the Expansion Link 1 IN connector on the rear panel of the first Expansion shelf. 3. Connect one end of a second cable 060-55505-01 to the Expansion Link 2 connector on the Master shelf. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 96 Expansion shelf in the system. 11.Install the Termination Connectors on the Expansion Link 1 OUT and Expansion Link 2 OUT connectors on the last Expansion shelf in the system. 12.Tighten all connections. TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 97: Connecting A Single Expansion Shelf
Chapter 3 Installing the TimeHub Installing Expansion Shelves Address Switch SW1 set to “1” Figure 3-21. Connecting a Single Expansion Shelf 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 98: Connecting Multiple Expansion Shelves
Chapter 3 Installing the TimeHub Installing Expansion Shelves Address Switch SW1 set to “1” Address Switch SW1 set to “2” Figure 3-22. Connecting Multiple Expansion Shelves TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 99: Chapter 4 Testing And Configuring The Timehub
Provisioning Inputs on a Master Shelf Provisioning Inputs on a Remote Shelf Testing the Clock Input Signals Provisioning the Outputs Configuring CC Signals Checking System Operation Enabling Security Setting the Configuration to Factory Defaults 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide...
Page 100: Overview
Overview Overview This chapter describes how to install cards into the front panel and configure the TimeHub 5500. Perform these tasks after you install the shelf and make power, input, alarm, and communications connections described in Chapter 3, Installing the TimeHub.
Page 101: Installing The Management Card
11. Replace both A and B fuses. The LEDs next to the fuses turn off, the ALARMS Shelf Major, and Minor LEDs light, then turn off. The Critical LED remains on. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 101...
Page 102: Location Of Switch S1 On The Management Card
[EM1 and EM2] will be accepted; communications from all other network addresses will be ignored) Enforce IP match disable (communication from any network will be accepted) 4–8 Reserved for future use 102 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 103: Front Panel Of The Management Card
Chapter 4 Testing and Configuring the TimeHub Installing Cards into the Front Panel Figure 4-3. Front Panel of the Management Card 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 103...
Page 104: Installing The Clock Cards
LEDs is lit on the Clock card. The Clock cards are in Freerun mode when the Warmup LED turns off. To ensure that an input is qualified on a card, refer to the procedure in Provisioning Inputs on a Master Shelf, on page 121. 104 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 105: Front Panel Of The Clock Card
Chapter 4 Testing and Configuring the TimeHub Installing Cards into the Front Panel Figure 4-4. Front Panel of the Clock Card 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 105...
Page 106: Confirming The Master Or Remote Shelf Setting
Figure 4-4 for the location of the “Remote” LED. You can also check the setting by issuing the TL1 command MAINCLK (see the TimeHub 5500 TL1 Reference Manual for details). 106 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 107: Installing Output Driver Cards
Note that for a fully loaded shelf, the initialization process could take several minutes in total. If only a single output card is being inserted, the time will be much less than that. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 107...
Page 108: Installing Cards Into The Expansion Shelf
EC card in slot EC2 issues an alarm to indicate that the link from CLK2 is broken. Replace CLK2. 4. Remove CLK1. The Link LEDs should remain green. An alarm is expected on EC1 since the link from CLK1 is broken. 108 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 109: Installing Output Driver Cards
If only a single output card is being inserted, the time will be much less than that. Establishing a Connection to the TimeHub You can connect to the TimeHub 5500 using either a serial connection or an Ethernet connection. To connect via a serial port, see Communicating by Serial Port, on page 110.
Page 110: Communicating By Serial Port
Using TimeScan THC Use the following procedure to log in to the TimeHub 5500 for the first time using TimeScan THC via a serial connection. 1. Connect one end of the cable to the serial port on the computer or terminal and the other to the Local connector on the rear panel or the Local connector on the Management card.
Page 111 4. If security is enabled on the TimeHub (see Enabling Security, on page 143), issue the ACT-USER command to log in: ACT-USR:[tid]:<aid>:<ctag>::<pid>; where <aid> and <pid> are your user name and password, respectively. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 111...
Page 112: Communicating By Ethernet
See the TL1 Reference Guide for details on each of the parameters in this dialog box. Set the parameters appropriately for the network to which the TimeHub is connected. Most important is IPNE, which is the IP address of the TimeHub shelf. 112 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 113 Figure 4-8 appears. thub0055 Figure 4-8. Network Parameters Dialog Box 10. Verify that the settings are as desired, then click Yes. The Management card restarts with the new settings. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 113...
Page 114 3. Issue the following command to copy the working memory to auxiliary memory. CPY-MEM::NET:<ctag>::WKG,AUX; 4. Issue the following command to set the TimeHub 5500 IP address. ED-EQPT:::<ctag>:::IPNEX=a; where a = a.a.a.a, where each is an independent value of 0 to 255 To verify the parameter, issue the Retrieve Equipment command: RTRV-EQPT:::<ctag>:::PARAMETER=IPNEX;...
Page 115 1. To verify the parameter, issue the Retrieve Equipment command. RTRV-EQPT:::<ctag>:::PARAMETER=PORTCMDSX; 2. If AOMERGE is set to Y, automatic output messages, and commands and responses are combined on this port. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 115...
Page 116 2. Start the TimeScan THC application. A dialog box asks if you want to connect to Comm Port 1. Click Cancel. The TimeHub TimeScan THC window appears, as shown in Figure 4-6. 116 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 117: Provisioning Master Shelf Parameters
Expansion shelf, this is reported in the response, and is indicated by LEDs on the front panel of the Expansion Controller card(s). 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 117...
Page 118: Setting The Date And Time
ED-DAT:::SC001::04-10-19,09-44-49; where SC001 is the ctag 04-10-19 is the date (October 19, 2004) 09-44-49 is the time (09:44:49) The TimeHub responds with the COMPLD message. 118 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 119: Setting The System Id
Note: If you include a target identifier <tid> in a command, it is checked against the system identifier <sid> of the TimeHub 5500. The command is executed only if the <tid> and <sid> match; if they do not match, the command is ignored.
Page 120: Verifying The Hardware Setup
2. Select TL1Commands, RTRV-NETYPE-ALL, or press F2 to send the RTRV-NETYPE-ALL query. A typical response is as follows: SYMMBITS 04-10-19 11:14:33 SV36 RTRV "TSG:Symmetricom,5500,TSG" "S0-IMC:,090-55542-01-A,,R4209C,J86746,D0TPN0NAAA,106063" "S0-CLK1:,090-55514-02-A,,R4142B,J63939,D0TPKRJAAA,297083" "S0-CLK2:,090-55512-02-A,,R4312A,K60716,D0TPVRKAAA,299460" "S0-OUT1A:,090-55581-01-A,,R4236A,00M15316,D0TPJNMAAA,105045,CC," "S0-OUT2A:,090-55581-01-A,,R4236A,00M15320,D0TPJNMAAA,105045,CC," "S0-OUT3B:,090-55581-01-A,,R4236A,00M15317,D0TPJNMAAA,105045,CC," "S0-OUT4B:,090-55581-01-A,,R4236A,00M15360,D0TPJNMAAA,105045,CC," "S0-OUT5C:,090-55581-01-A,,R4236A,00M15358,D0TPJNMAAA,105045,CC," > SYMMBITS 04-10-19 11:14:33 SV36 COMPLD 120 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 121: Provisioning Inputs On A Master Shelf
Use this procedure to provision the inputs for a Master shelf. If you are provisioning inputs for a Remote shelf, see Provisioning Inputs on a Remote Shelf, on page 128. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 121...
Page 122 Monitoring is enabled by default on inputs 0 – 4. To change the MONITOR setting, click the Monitor check box for the desired input. 122 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 123 9. Enable SSM reading for ESF-framed DS1 inputs. Inputs that are incapable of SSM decoding (such as PRS or D4-framed DS1) use an assumed SSM value (see keyword QLEVEL in the TimeHub 5500 TL1 Reference Manual). The ESF-framed DS1 inputs will also use an assumed value unless reading of SSM is enabled.
Page 124 5. If the connected DS1 signal is carrying valid SSM, the “Q” LED will light within a few seconds. This LED, when lit, indicates that the input is qualified as providing decodable SSM information. 124 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 125 5 or 10 MHz input. The default is 10 MHz. If necessary, change the setting. To set the PRS Frequency to 5 MHz, issue the following command: ED-SYNC::CLK-0:SV347:::PRC5MHZ=Y; Set this value to N when the expected PRS Frequency is 10 MHz. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 125...
Page 126 = 0 – 9 to set the priority value To set input 2 priority to 3, issue the command: ED-SYNC::CLK-2:SV380:::PRIORITY=3; To retrieve the priority setting for input 2, issue the command: RTRV-SYNC::CLK-2:SV381:::PARAMETER=PRIORITY; 126 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 127 To set input 1 to expect a bridged signal level, issue the command: ED-SYNC::CLK-1:SV385:::BRIDGED=Y; To retrieve the bridged setting for input 1, issue the command: RTRV-SYNC::CLK-1:SV386:::PARAMETER=BRIDGED; To disallow the use of SSMs as input qualification criteria, issue the command: ED-EQPT::CLK:SV43:::SYNCMDE=AUTO; 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 127...
Page 128: Provisioning Inputs On A Remote Shelf
This procedure is identical for CC2 by replacing any references to CC1 with CC2. To provision the Remote inputs using TL1 commands, see Using TL1 Commands, on page 130. 128 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 129 “E” has been lit. When this LED lights, the input meets all requirements for use as a timing source (signal presence, framing, within frequency pull-in range all confirmed). 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 129...
Page 130 FREEACT on a remote shelf is SQUELCH, which means no output is possible when in Freerun mode. By setting it to CONTINUE output is allowed in when in Freerun. See the TimeHub 5500 TL1 Reference Manual for details. Using TL1 Commands...
Page 131 The default setting for FREEACT on a Remote shelf is SQUELCH, which means no output is possible when in Freerun mode. By setting FREEACT to CONTINUE, output is allowed in when in Freerun. See the TimeHub 5500 TL1 Reference Manual for details.
Page 132: Testing The Clock Input Signals
2. Connect the X10 probes to the channel 1 and channel 2 oscilloscope inputs, and install a terminating resistor across the probes. 3. Connect the channel 1 and 2 probe ground leads together. 132 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 133: Typical Oscilloscope Settings
0 dB DSX (TERM) signal, set the volts-per-division scale to 1 V per division; to measure a –20 dB DSX (BRDG) signal, set the volts-per-division scale to 100 mV per division. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 133...
Page 134: Provisioning The Outputs
Using TimeScan THC You can provision outputs using the Configuration Output tab in the TimeScan THC application, as shown in Figure 4-14. thub0056 Figure 4-14. Configuring Outputs Using TimeScan THC 134 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 135 For DS1 output waveforms, only the positive pulse is shown. The negative pulse is an upside-down, mirror image of the positive pulse. 6. Set the cable compensation for Composite Clock outputs using the procedure in Configuring CC Signals, on page 138. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 135...
Page 136 In the above example, the card being put in service is located in Expansion shelf 1 (S1-), the card is in the C group (OUTC), and SV267 is the ctag. 136 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 137 4. Check the framing setting by issuing the following command: RTRV-EQPT::S1-OUTC-PG2:SV272:::parameter=OUTESF; which produces the following response: SYMMBITS 04-10-11 10:43:40 SV272 COMPLD "S1-OUTC-PG2::OUTESF = Y" This response shows that the output framing is set to ESF. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 137...
Page 138: Securing Cards In The Shelf
Configuring CC Signals When configured as a Master shelf, the TimeHub 5500 has several capabilities provided to facilitate operation of the shelf with a downstream Remote shelf. These...
Page 139: Phase Aligning Cc Input And Cc Output
For example, if a 3 µs CC delay value has been set (and is enabled), the alignment is successful when you can observe a 3 µs time difference between the CC input and CC output. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 139...
Page 140: Setting The Delay On Cc Outputs
You set the CC delay parameters on the Configuration Output tab in the TimeScan THC application, as shown in Figure 4-17. You set the delay according to the length of cable (in feet) connected to the output. 140 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 141 Figure 4-18. thub0059 Figure 4-18. Enabling Ports for CC Cable Compensation 3. Click the box that correspond to the ports that will have compensation, then click Close. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 141...
Page 142: Checking System Operation
Checking System Operation When the signals have been acquired and the outputs are stable enough to output PRS, the TimeHub 5500 enters its normal operation mode. During normal operation, the following conditions exist: These should be observed on both Clock cards: –...
Page 143: Enabling Security
Enabling Security Enabling Security The TimeHub 5500 has a security feature that requires a user to supply a user name and password in order to access or modify parameter settings. Each user can be assigned to one of three different security levels; each level can access system commands that are assigned to corresponding levels.
Page 144 9. Install the Management card and tighten the captive screws. 10. Issue the ACT-USR command to log in to the TimeHub: ACT-USR:[tid]:<aid>:<ctag>::<pid>; where <aid> and <pid> are the user name and password, respectively. 144 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 145: Managing The User List
5. Retype the password in the Confirm Password field. 6. Click Accept. 7. Click Close to close the User Administration dialog box. 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 145...
Page 146 <uap> is the security level (USER, SECURITY, or ADMIN) To change your password, issue the ED-PID command: ED-PID:[<tid>]:<aid>:<ctag>::<oldpid>,<newpid>; where: <aid> is your current user name <oldpid> is your old password <newpid> is your new password 146 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 147: Setting The Configuration To Factory Defaults
Setting the Configuration to Factory Defaults To reset all synchronization-related settings to their factory default settings, use the procedure in this section. All outputs will be disabled; Symmetricom does not recommend that you perform this procedure on a fully operational shelf. Default...
Page 148: 148 Timehub 5500 User's Guide
Chapter 4 Testing and Configuring the TimeHub Setting the Configuration to Factory Defaults 148 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 149: Chapter 5 Maintaining The Timehub 5500
Chapter 5 Maintaining the TimeHub 5500 Chapter This chapter includes: Clearing Output Port Alarms Testing the Cards Troubleshooting the TimeHub 5500 Replacing Cards Replacing Fuses Repair and Return Technical Assistance Sales User Manual Updates 097-55501-02 Issue 8 – February 2005...
Page 150: Clearing Output Port Alarms
Chapter 5 Maintaining the TimeHub 5500 Clearing Output Port Alarms Clearing Output Port Alarms The TimeHub Output cards contain a sensing circuit that detects output signal failures. Every output port has a sensing circuit. The sensing circuit detects and reports on internal component failures associated with the port output circuitry.
Page 151: Clearing False Port Alarms
Chapter 5 Maintaining the TimeHub 5500 Clearing Output Port Alarms Other than the possible alarm reporting, a measurement made with such a connection remains as valid as it would otherwise have been. While such a connection cannot be used in any case to evaluate output signal characteristics...
Page 152 Chapter 5 Maintaining the TimeHub 5500 Clearing Output Port Alarms Figure 5-1. The Configuration Output Screen Figure 5-2. Attempt to Clear Port Alarm Query Screen Note: The screen identifies that the C card group is the target for clearing. Click OK to proceed with the attempt to clear the alarm.
Page 153: Testing The Cards
Chapter 5 Maintaining the TimeHub 5500 Testing the Cards Note: If a false port alarm does not self-clear after the condition causing it is removed, the false alarm was likely generated on only one output card in a redundant pair. This could occur since each card independently senses port alarms and could be impacted slightly differently by injected noise.
Page 154 Chapter 5 Maintaining the TimeHub 5500 Testing the Cards – On the Management card, the Shelf Minor Alarm LED lights. This alarm is caused by an enabled input that is not qualified (INDISQ). Specific alarm information is logged on each clock card and automatically output on communication ports.
Page 155: Removing A Clock Card
Troubleshooting the TimeHub 5500 The figures and tables in this section provide troubleshooting actions for the TimeHub 5500 using the LEDs on the front panel of the Clock, Output Driver, Management, and EC cards. 097-55501-02 Issue 8 – February 2005...
Page 156: Troubleshooting The Clock Card
Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Troubleshooting the Clock Card The front panel of the Clock card is shown in Figure 5-4. Use the LEDs on the front panel and the actions in Table 5-1 to diagnose and resolve problems with the Clock card.
Page 157: Troubleshooting The Clock Card Front Using The Leds
Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-1. Troubleshooting the Clock Card Front Using the LEDs Name State Description Action Power Power is not present. 1. If all LEDs on the shelf are off, apply power or troubleshoot the –48 V power source.
Page 158 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-1. Troubleshooting the Clock Card Front Using the LEDs (Continued) Name State Description Action TRACK MODE The Clock card is not in a None required. warm-up state. Warmup Yellow The Clock card is warming up, None required.
Page 159 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-1. Troubleshooting the Clock Card Front Using the LEDs (Continued) Name State Description Action TRACK MODE The system has not gathered None required if the system has sufficient information during...
Page 160 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-1. Troubleshooting the Clock Card Front Using the LEDs (Continued) Name State Description Action INPUTS The associated reference input If the INPUTS E LED is off or if is not qualified (Q) for tracking.
Page 161 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-1. Troubleshooting the Clock Card Front Using the LEDs (Continued) Name State Description Action Standby This card is not generating an If the Active LED on this card is lit, output that is phase-locked to none required.
Page 162: Troubleshooting The Output Driver Card
Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Troubleshooting the Output Driver Card The front panel of the Output Driver card is shown in Figure 5-5. Use the LEDs on the front panel and the actions in Table 5-2 to diagnose and resolve problems with the Output Driver card.
Page 163: Troubleshooting The Output Driver Card Using Front Panel Leds
Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-2. Troubleshooting the Output Driver Card Using Front Panel LEDs Name State Description Action Power Power is not present. If all LEDs on the system are off, apply power or troubleshoot the –48 V power...
Page 164 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-2. Troubleshooting the Output Driver Card Using Front Panel LEDs (Continued) Name State Description Action Alarm There is no alarm condition. None required. An alarm condition exists. If the Fail LED is also lit, replace...
Page 165 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-2. Troubleshooting the Output Driver Card Using Front Panel LEDs (Continued) Name State Description Action Alarm (cont’d) 3. The Alarm LED lights if the Output Driver card is using the Clock signal from the standby clock.
Page 166: Reading The Output Driver Firmware Version
Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-2. Troubleshooting the Output Driver Card Using Front Panel LEDs (Continued) Name State Description Action Ports 1–20 There is no Output Connector None required. card connected to ports 1 through 20;...
Page 167 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 SYMMBITS 99-10-03 20:55:19 sc1 RTRV "TSG:Symmetricom,5500,TSG" "S0-IMC:,090-55542-01-A,,W0320A,J20280,D0TPN0JAAA,297085" "S0-CLK1:,090-55512-01-A,,R4209A,0000000,D0TPVPJAAA,296936" "S0-CLK2:,090-55514-01-A,,R4209A,0000000,D0TPKPJAAA,296939" "S0-OUT5C:,090-55581-01-A,,R4209A,00J21559,D0TPJN0AAA,267799,DS1," "S0-OUT6C:,090-55581-01-A,,R4114C,00J43212,DOTPJN0AAA,267799,DS1," > SYMMBITS 99-10-03 20:55:19 sc1 COMPLD "S2-CLK1:,090-55545-01-B,,4209A,,D0C1ZZ0AAA,299465" "S2-CLK2:,090-55545-01-B,,4209A,,D0C1ZZ0AAA,299465" "S2-OUT12F:,090-55581-01-A,,R4209A,00000000,D0TPJN0AAA,267799,," "S2-OUT14G:,090-55581-01-A,,R4114C,00J21577,D0TPJN0AAA,267799,DS1,DS1" In the above response, four output cards are identified. The lines starting with S0-OUT5C and S0-OUT6C identify output cards in slots 5 and 6 of the Master shelf.
Page 168: Troubleshooting The Management Card
Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Troubleshooting the Management Card The front panel of the Management card is shown in Figure 5-6. Use the LEDs on the front panel and the actions in Table 5-3 to diagnose and resolve problems with the Management card.
Page 169: Management Card Front Panel Items
Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-3. Management Card Front Panel Items Name State Description Action Power Power is not present. 1. If all LEDs on the system are off, apply power or troubleshoot the –48 V power source.
Page 170 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-3. Management Card Front Panel Items (Continued) Name State Description Action SHELF The –48V A input is at the None required. POWER –48V normal voltage level. A Fail The –48V A input is below the Troubleshoot and repair the A normal voltage level.
Page 171 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-3. Management Card Front Panel Items (Continued) Name State Description Action ALARMS There is no critical alarm None required. outside the shelf. System Critical A critical alarm condition exists Refer to the TL1 Reference Guide outside the shelf.
Page 172 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-3. Management Card Front Panel Items (Continued) Name State Description Action ALARMS There is no critical alarm within None required. the shelf. Shelf Critical A critical alarm condition exists Refer to the TL1 Reference Guide in the shelf.
Page 173 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-3. Management Card Front Panel Items (Continued) Name State Description Action COMM PORTS A user is not logged on the local None required. Local Logon port. Green A user is logged on the local None required.
Page 174: Troubleshooting The Expansion Controller Card
Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Troubleshooting the Expansion Controller Card The front panel of the Expansion Controller card is shown in Figure 5-7. Use the LEDs on the front panel and the actions in Table 5-4 to diagnose and resolve problems with the EC card.
Page 175: Troubleshooting The Expansion Controller Card
Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-4. Troubleshooting the Expansion Controller Card Name State Description Action Power Power is not present. 1. If all LEDs on the system are off, apply power or troubleshoot the –48 V power source.
Page 176 Chapter 5 Maintaining the TimeHub 5500 Troubleshooting the TimeHub 5500 Table 5-4. Troubleshooting the Expansion Controller Card Name State Description Action SHELF Green The –48V B input is at the None required. POWER normal voltage level. –48V B Fail The –48V B input is below the Troubleshoot and repair the B normal voltage level.
Page 177: Replacing Cards
Chapter 5 Maintaining the TimeHub 5500 Replacing Cards Replacing Cards Replacing the Clock Card Warning: Before replacing the Clock card, make sure that the system has at least one clock active and is NOT operating in Passthrough mode by checking the light on the Management card.
Page 178: Replacing The Output Driver Card
Chapter 5 Maintaining the TimeHub 5500 Replacing Cards Replacing the Output Driver Card To replace the Output Driver card, follow the procedure below while referring to Figure 5-5. 1. Put on a properly grounded ESD wrist strap. 2. Using a #2 Phillips-head or Pozidrive screwdriver, loosen the captive screws on the front panel.
Page 179: Replacing The Expansion Controller Card
8. If using a LAN connection, connect a nine-pin male-to-female RS-232 interface cable from the communication port on a computer with communications software to the Local port on the TimeHub 5500. If not, skip to Step 13. 9. Configure the network parameters (see...
Page 180: Replacing Fuses
Chapter 5 Maintaining the TimeHub 5500 Replacing Fuses Replacing Fuses Replacing the Fuse in the Clock Card To replace the fuse on the Clock card, follow the steps in this section. Figure 5-8 shows the location of the fuse holder.
Page 181: Replacing The Fuse On The Management Card
Chapter 5 Maintaining the TimeHub 5500 Replacing Fuses 8. Wait for the Warmup LED to turn off on the card (approximately 2 minutes to 20 minutes) and the Tracking LED to light. 9. Press the Cutoff pushbutton on the Management card several times.
Page 182: Replacing The Fuse In The Output Driver Card
Chapter 5 Maintaining the TimeHub 5500 Replacing Fuses 8. Verify that the Power LED is lit. 9. Press the Cutoff pushbutton several times. 10.Verify that any alarm conditions are cleared. 11.If applicable, re-connect the cable that was connected to the card.
Page 183: Replacing The Fuse On The Ec Card
Chapter 5 Maintaining the TimeHub 5500 Replacing Fuses Replacing the Fuse on the EC Card To replace the fuse on the EC card, follow the procedure in this section. Figure 5-10 shows the location of the fuse holder on the card.
Page 184: Repair And Return
Retain the RMA number for future reference. The RMA number is used by Symmetricom for internal tracking of the unit. Reference the RMA number in all communications with Symmetricom regarding the unit. Pack the defective equipment, including a list containing all the information obtained above, in the original packing material.
Page 185: Technical Assistance
Chapter 5 Maintaining the TimeHub 5500 Technical Assistance Repaired equipment is typically shipped within 30 days of receipt by Symmetricom, or per contract terms. Shipping costs to Symmetricom are paid by the customer; shipping costs back to the customer are paid by Symmetricom. Technical Assistance For technical assistance, contact the following: Symmetricom, Inc.
Page 186: User Manual Updates
Manual updates are available at: http://www.symmetricom.com/support/login/login.php Note: If you are downloading a manual for the first time, you will need to register with Symmetricom. If you are currently registered, login and download the manual update. 186 TimeHub 5500 User’s Guide...
Page 187 Chapter 6 Specifications Chapter This chapter includes: Overview Factory Default Values 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 187...
Page 188: Chapter 6 Specifications
Chapter 6 Specifications Overview Overview The TimeHub 5500 equipment specifications are listed as follows. Local Communication Port Connector Type: 9-pin, female D connector Connector Label: Local Connector Location:Management card (front) Rear of shelf Electrical Interface: RS-232 Baud Rate: 1200 bps...
Page 189: Expansion Link 1 Input
Cable Attenuation: 7.0 dB maximum LOS Threshold: –14 dB to –10 dB (terminated) relative to nominal 3 V amplitude –34 dB to –30 dB (bridged) relative to nominal 3 V amplitude 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 189...
Page 190: Prs Reference Input
1–20 (S, T, R) Connector Location:Wire-wrap panel Number of Outputs: Up to 40 protected or non-protected outputs per card Maximum of 140 per master shelf. Additional capacity available using Expansion shelves 190 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 191: Composite Clock Outputs
OFFICE ALARMS (NC, C, NO) Connector Location:Input/Alarm Connector card (rear) Contact Type: Dry contact Severity: Critical (audible and visible) Major (audible and visible) Minor (audible and visible) State: Normally open and normally closed 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 191...
Page 192: Input Alarms
Offset: 2 in (5 cm) or 5 in. 12.7 cm) Width: 16.6 in. (42.2 cm) Height: 10.5 in. (26.7 cm) Depth: 11.6 in. (29.5 cm) Weight: 14 lb (6.4 kg) empty 40 lb (18.2 kg) fully loaded 192 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 193: Wire-Wrap Panel Mechanical
This section describes the factory default values for parameters within the TimeHub 5500. Management Card Default Settings Table 6-1 lists the factory defaults for the Management card in the TimeHub 5500. Table 6-1. Management Card Default Settings Setting Factory Default...
Page 194: Clock Card Default Settings
– Inactivity Time 100 sec 0 to 10 000 sec Clock Card Default Settings Table 6-2 lists the factory defaults for the TimeHub 5500 Clock card. Table 6-2. Clock Card Default Settings Setting Factory Default Range Bridged Mode Y / N...
Page 195: Output Driver Card Default Settings
30 sec 0 to 1000 sec source Output Driver Card Default Settings Table 6-3 lists the factory defaults for the TimeHub 5500 Output Driver card. Table 6-3. DS1 and E1 Output Module Default Settings Setting Factory Default Range Enable/Disable Outputs...
Page 196: User Changes To Factory Defaults
(prior to firmware version 4263B) PRS: 1 Others: 2 Remote: 2 (firmware version 4263B and later) Input Selection Mode Auto Main Clock Master = Y Measurement Delay 0 sec 196 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 197 Wait Time to restore Sync 30 sec source Output Driver Module Defaults Enable/Disable Outputs Disabled Framing N (prior to firmware version 4236B) Y (firmware version 4236B and higher) Output Quality Level 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 197...
Page 198 Chapter 6 Specifications Factory Default Values 198 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 199 TL1 commands delay, setting – Ethernet requirements overview Expansion shelf computer null-modem connecting Output Connector modules connection panels Cable Management kit, installing installing card replacement overview Clock card 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 199...
Page 200 Fast Track LED firmware version, retrieving from Output Driver card E (Enabled) LED Force Active button electromagnetic interference considerations Frame ground connections EMI considerations 200 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 201 SSM via TL1 commands Local Xmit enabling via TL1 commands Passthrough external alarm Power Master shelf, provisioning – Q (Qualified) monitoring DS1 Remote Link monitoring, selecting via TimeScan THC 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 201...
Page 202 SSM overview block diagram Clock cards communicating with an Expansion shelf part numbers installing – kit, part number Passthrough LED Output Connector modules passthrough mode – 202 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...
Page 203 Expansion shelf Master shelf Shelf Major LED space required Shelf Minor LED rear panel Shelf Power LED Master shelf SID, setting recommendations defined xvii single Clock card redundancy site survey 097-55501-02 Issue 8 – February 2005 TimeHub 5500 User’s Guide 203...
Page 204 TID, setting cables time connecting setting via TimeScan THC installing setting via TL1 commands part numbers wrist strap, ESD 204 TimeHub 5500 User’s Guide 097-55501-02 Issue 8 – February 2005...

Symmetricom TimeHub 5500 User Manual

How to Use this Guide

Chapter 1 Description

Chapter 2 Engineering & Ordering Information

Chapter 3 Installing the Timehub

Chapter 4 Testing and Configuring the Timehub

Chapter 5 Maintaining the Timehub 5500

Chapter 6 Specifications

Quick Links

Troubleshooting

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